NEWS
author krauss
Mon, 13 Nov 2006 13:53:48 +0100
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parent 21308 73883a528b26
child 21339 b59f7cca0b0c
permissions -rw-r--r--
updated
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Isabelle NEWS -- history user-relevant changes
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==============================================
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ed941505cab7 Isabelle NEWS -- history of user-visible changes;
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New in this Isabelle version
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----------------------------
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*** General ***
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* Theory syntax: the header format ``theory A = B + C:'' has been
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discontinued in favour of ``theory A imports B C begin''.  Use isatool
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fixheaders to convert existing theory files.  INCOMPATIBILITY.
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* Theory syntax: the old non-Isar theory file format has been
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discontinued altogether.  Note that ML proof scripts may still be used
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with Isar theories; migration is usually quite simple with the ML
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function use_legacy_bindings.  INCOMPATIBILITY.
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* Theory syntax: some popular names (e.g. "class", "if", "fun") are
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now keywords.  INCOMPATIBILITY, use double quotes.
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* Legacy goal package: reduced interface to the bare minimum required
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to keep existing proof scripts running.  Most other user-level
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functions are now part of the OldGoals structure, which is *not* open
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by default (consider isatool expandshort before open OldGoals).
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Removed top_sg, prin, printyp, pprint_term/typ altogether, because
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these tend to cause confusion about the actual goal (!) context being
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used here, which is not necessarily the same as the_context().
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* Command 'find_theorems': support "*" wildcard in "name:" criterion.
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* The ``prems limit'' option (cf. ProofContext.prems_limit) is now -1
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by default, which means that "prems" (and also "fixed variables") are
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suppressed from proof state output.  Note that the ProofGeneral
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settings mechanism allows to change and save options persistently, but
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older versions of Isabelle will fail to start up if a negative prems
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limit is imposed.
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* Local theory targets may be specified by non-nested blocks of
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``context/locale/class ... begin'' followed by ``end''.  The body may
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contain definitions, theorems etc., including any derived mechanism
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that has been implemented on top of these primitives.  This concept
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generalizes the existing ``theorem (in ...)'' towards more versatility
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and scalability.
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*** Document preparation ***
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* Added antiquotations @{ML_type text} and @{ML_struct text} which
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check the given source text as ML type/structure, printing verbatim.
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*** Pure ***
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* class_package.ML offers a combination of axclasses and locales to
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achieve Haskell-like type classes in Isabelle. See
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HOL/ex/Classpackage.thy for examples.
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* Yet another code generator framework allows to generate executable
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code for ML and Haskell (including "class"es). A short usage sketch:
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    internal compilation:
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        code_gen <list of constants (term syntax)> (SML *)
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    writing SML code to a file:
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        code_gen <list of constants (term syntax)> (SML <filename>)
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    writing Haskell code to a bunch of files:
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        code_gen <list of constants (term syntax)> (Haskell <filename>)
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Reasonable default setup of framework in HOL/Main.
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See HOL/ex/Code*.thy for examples.
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Theorem attributs for selecting and transforming function equations theorems:
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    [code fun]:       select a theorem as function equation for a specific constant
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    [code nofun]:     deselect a theorem as function equation for a specific constant
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    [code inline]:    select an equation theorem for unfolding (inlining) in place
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    [code noinline]:  deselect an equation theorem for unfolding (inlining) in place
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User-defined serializations (target in {SML, Haskell}):
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    code_const <and-list of constants (term syntax)>
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      {(target) <and-list of const target syntax>}+
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    code_type <and-list of type constructors>
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      {(target) <and-list of type target syntax>}+
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    code_instance <and-list of instances>
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      {(target)}+
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        where instance ::= <type constructor> :: <class>
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    code_class <and_list of classes>
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      {(target) <and-list of class target syntax>}+
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        where class target syntax ::= <class name> {where {<classop> == <target syntax>}+}?
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For code_instance and code_class, target SML is silently ignored.
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See HOL theories and HOL/ex/Code*.thy for usage examples.  Doc/Isar/Advanced/Codegen/
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provides a tutorial.
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* Command 'no_translations' removes translation rules from theory
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syntax.
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* Overloaded definitions are now actually checked for acyclic
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dependencies.  The overloading scheme is slightly more general than
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that of Haskell98, although Isabelle does not demand an exact
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correspondence to type class and instance declarations.
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INCOMPATIBILITY, use ``defs (unchecked overloaded)'' to admit more
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exotic versions of overloading -- at the discretion of the user!
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Polymorphic constants are represented via type arguments, i.e. the
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instantiation that matches an instance against the most general
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declaration given in the signature.  For example, with the declaration
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c :: 'a => 'a => 'a, an instance c :: nat => nat => nat is represented
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as c(nat).  Overloading is essentially simultaneous structural
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recursion over such type arguments.  Incomplete specification patterns
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impose global constraints on all occurrences, e.g. c('a * 'a) on the
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LHS means that more general c('a * 'b) will be disallowed on any RHS.
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Command 'print_theory' outputs the normalized system of recursive
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equations, see section "definitions".
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* Isar: improper proof element 'guess' is like 'obtain', but derives
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the obtained context from the course of reasoning!  For example:
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  assume "EX x y. A x & B y"   -- "any previous fact"
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  then guess x and y by clarify
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This technique is potentially adventurous, depending on the facts and
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proof tools being involved here.
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* Isar: known facts from the proof context may be specified as literal
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propositions, using ASCII back-quote syntax.  This works wherever
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named facts used to be allowed so far, in proof commands, proof
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methods, attributes etc.  Literal facts are retrieved from the context
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according to unification of type and term parameters.  For example,
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provided that "A" and "A ==> B" and "!!x. P x ==> Q x" are known
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theorems in the current context, then these are valid literal facts:
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`A` and `A ==> B` and `!!x. P x ==> Q x" as well as `P a ==> Q a` etc.
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There is also a proof method "fact" which does the same composition
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for explicit goal states, e.g. the following proof texts coincide with
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certain special cases of literal facts:
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  have "A" by fact                 ==  note `A`
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  have "A ==> B" by fact           ==  note `A ==> B`
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  have "!!x. P x ==> Q x" by fact  ==  note `!!x. P x ==> Q x`
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  have "P a ==> Q a" by fact       ==  note `P a ==> Q a`
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* Isar: ":" (colon) is no longer a symbolic identifier character in
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outer syntax.  Thus symbolic identifiers may be used without
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additional white space in declarations like this: ``assume *: A''.
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* Isar: 'print_facts' prints all local facts of the current context,
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both named and unnamed ones.
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* Isar: 'def' now admits simultaneous definitions, e.g.:
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  def x == "t" and y == "u"
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* Isar: added command 'unfolding', which is structurally similar to
7b6f57406b1b * Pure/Isar: new command 'unfolding';
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'using', but affects both the goal state and facts by unfolding given
18815
cb778c0ce1b5 Pure/Isar: (un)folded, (un)fold, unfolding support
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rewrite rules.  Thus many occurrences of the 'unfold' method or
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7b6f57406b1b * Pure/Isar: new command 'unfolding';
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'unfolded' attribute may be replaced by first-class proof text.
7b6f57406b1b * Pure/Isar: new command 'unfolding';
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18815
cb778c0ce1b5 Pure/Isar: (un)folded, (un)fold, unfolding support
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* Isar: methods 'unfold' / 'fold', attributes 'unfolded' / 'folded',
cb778c0ce1b5 Pure/Isar: (un)folded, (un)fold, unfolding support
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and command 'unfolding' now all support object-level equalities
cb778c0ce1b5 Pure/Isar: (un)folded, (un)fold, unfolding support
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(potentially conditional).  The underlying notion of rewrite rule is
cb778c0ce1b5 Pure/Isar: (un)folded, (un)fold, unfolding support
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analogous to the 'rule_format' attribute, but *not* that of the
cb778c0ce1b5 Pure/Isar: (un)folded, (un)fold, unfolding support
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Simplifier (which is usually more generous).
cb778c0ce1b5 Pure/Isar: (un)folded, (un)fold, unfolding support
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   169
19220
05b00acff957 Isar/method: goal restriction;
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* Isar: the goal restriction operator [N] (default N = 1) evaluates a
05b00acff957 Isar/method: goal restriction;
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method expression within a sandbox consisting of the first N
19240
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sub-goals, which need to exist.  For example, ``simp_all [3]''
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simplifies the first three sub-goals, while (rule foo, simp_all)[]
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simplifies all new goals that emerge from applying rule foo to the
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   175
originally first one.
19220
05b00acff957 Isar/method: goal restriction;
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   176
19814
faa698d46686 * Theory syntax: some popular names (e.g. "class", "if") are now keywords.
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* Isar: schematic goals are no longer restricted to higher-order
faa698d46686 * Theory syntax: some popular names (e.g. "class", "if") are now keywords.
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patterns; e.g. ``lemma "?P(?x)" by (rule TrueI)'' now works as
faa698d46686 * Theory syntax: some popular names (e.g. "class", "if") are now keywords.
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   179
expected.
faa698d46686 * Theory syntax: some popular names (e.g. "class", "if") are now keywords.
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   180
18901
701e53c81c25 * Isar: 'obtains' element;
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   181
* Isar: the conclusion of a long theorem statement is now either
701e53c81c25 * Isar: 'obtains' element;
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   182
'shows' (a simultaneous conjunction, as before), or 'obtains'
701e53c81c25 * Isar: 'obtains' element;
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   183
(essentially a disjunction of cases with local parameters and
701e53c81c25 * Isar: 'obtains' element;
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   184
assumptions).  The latter allows to express general elimination rules
18910
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   185
adequately; in this notation common elimination rules look like this:
18901
701e53c81c25 * Isar: 'obtains' element;
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   186
701e53c81c25 * Isar: 'obtains' element;
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   187
  lemma exE:    -- "EX x. P x ==> (!!x. P x ==> thesis) ==> thesis"
701e53c81c25 * Isar: 'obtains' element;
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    assumes "EX x. P x"
701e53c81c25 * Isar: 'obtains' element;
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   189
    obtains x where "P x"
701e53c81c25 * Isar: 'obtains' element;
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   190
701e53c81c25 * Isar: 'obtains' element;
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   191
  lemma conjE:  -- "A & B ==> (A ==> B ==> thesis) ==> thesis"
701e53c81c25 * Isar: 'obtains' element;
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    assumes "A & B"
701e53c81c25 * Isar: 'obtains' element;
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   193
    obtains A and B
701e53c81c25 * Isar: 'obtains' element;
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   194
701e53c81c25 * Isar: 'obtains' element;
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   195
  lemma disjE:  -- "A | B ==> (A ==> thesis) ==> (B ==> thesis) ==> thesis"
701e53c81c25 * Isar: 'obtains' element;
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   196
    assumes "A | B"
701e53c81c25 * Isar: 'obtains' element;
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   197
    obtains
701e53c81c25 * Isar: 'obtains' element;
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   198
      A
701e53c81c25 * Isar: 'obtains' element;
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   199
    | B
701e53c81c25 * Isar: 'obtains' element;
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   200
18910
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   201
The subsequent classical rules even refer to the formal "thesis"
18901
701e53c81c25 * Isar: 'obtains' element;
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   202
explicitly:
701e53c81c25 * Isar: 'obtains' element;
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   203
701e53c81c25 * Isar: 'obtains' element;
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   204
  lemma classical:     -- "(~ thesis ==> thesis) ==> thesis"
701e53c81c25 * Isar: 'obtains' element;
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    obtains "~ thesis"
701e53c81c25 * Isar: 'obtains' element;
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   206
18910
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   207
  lemma Peirce's_Law:  -- "((thesis ==> something) ==> thesis) ==> thesis"
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   208
    obtains "thesis ==> something"
18901
701e53c81c25 * Isar: 'obtains' element;
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   209
701e53c81c25 * Isar: 'obtains' element;
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   210
The actual proof of an 'obtains' statement is analogous to that of the
18910
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Isar proof element 'obtain', only that there may be several cases.
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Optional case names may be specified in parentheses; these will be
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   213
available both in the present proof and as annotations in the
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   214
resulting rule, for later use with the 'cases' method (cf. attribute
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   215
case_names).
18901
701e53c81c25 * Isar: 'obtains' element;
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   216
19263
a86d09815dac print_statement;
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   217
* Isar: 'print_statement' prints theorems from the current theory or
a86d09815dac print_statement;
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   218
proof context in long statement form, according to the syntax of a
a86d09815dac print_statement;
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   219
top-level lemma.
a86d09815dac print_statement;
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   220
18901
701e53c81c25 * Isar: 'obtains' element;
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   221
* Isar: 'obtain' takes an optional case name for the local context
701e53c81c25 * Isar: 'obtains' element;
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   222
introduction rule (default "that").
701e53c81c25 * Isar: 'obtains' element;
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   223
19587
eb063e7932d7 * Isar: removed obsolete 'concl is' patterns.
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   224
* Isar: removed obsolete 'concl is' patterns.  INCOMPATIBILITY, use
eb063e7932d7 * Isar: removed obsolete 'concl is' patterns.
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   225
explicit (is "_ ==> ?foo") in the rare cases where this still happens
eb063e7932d7 * Isar: removed obsolete 'concl is' patterns.
wenzelm
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   226
to occur.
eb063e7932d7 * Isar: removed obsolete 'concl is' patterns.
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   227
19682
c8c301eb965a * Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
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diff changeset
   228
* Pure: syntax "CONST name" produces a fully internalized constant
c8c301eb965a * Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
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diff changeset
   229
according to the current context.  This is particularly useful for
c8c301eb965a * Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
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   230
syntax translations that should refer to internal constant
c8c301eb965a * Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
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diff changeset
   231
representations independently of name spaces.
c8c301eb965a * Pure: syntax 'CONST name' produces a fully internalized constant;
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   232
21209
dbb8decc36bc 'const_syntax' command: allow fixed variables, renamed to 'notation';
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   233
* Isar/locales: 'notation' provides a robust interface to the 'syntax'
dbb8decc36bc 'const_syntax' command: allow fixed variables, renamed to 'notation';
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diff changeset
   234
primitive that also works in a locale context (both for constants and
dbb8decc36bc 'const_syntax' command: allow fixed variables, renamed to 'notation';
wenzelm
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diff changeset
   235
fixed variables).  Type declaration and internal syntactic
dbb8decc36bc 'const_syntax' command: allow fixed variables, renamed to 'notation';
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diff changeset
   236
representation of given constants retrieved from the context.
19682
c8c301eb965a * Pure: syntax 'CONST name' produces a fully internalized constant;
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   237
19665
8885951e9c2d * Isar/locale: 'const_syntax';
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   238
* Isar/locales: new derived specification elements 'axiomatization',
8885951e9c2d * Isar/locale: 'const_syntax';
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   239
'definition', 'abbreviation', which support type-inference, admit
19083
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   240
object-level specifications (equality, equivalence).  See also the
wenzelm
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   241
isar-ref manual.  Examples:
19081
085b5badb8de * Isar/locales: new derived specification elements 'definition', 'abbreviation', 'axiomatization';
wenzelm
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   242
19665
8885951e9c2d * Isar/locale: 'const_syntax';
wenzelm
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   243
  axiomatization
8885951e9c2d * Isar/locale: 'const_syntax';
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   244
    eq  (infix "===" 50)
8885951e9c2d * Isar/locale: 'const_syntax';
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   245
    where eq_refl: "x === x" and eq_subst: "x === y ==> P x ==> P y"
8885951e9c2d * Isar/locale: 'const_syntax';
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   246
19081
085b5badb8de * Isar/locales: new derived specification elements 'definition', 'abbreviation', 'axiomatization';
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   247
  definition
085b5badb8de * Isar/locales: new derived specification elements 'definition', 'abbreviation', 'axiomatization';
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   248
    "f x y = x + y + 1"
085b5badb8de * Isar/locales: new derived specification elements 'definition', 'abbreviation', 'axiomatization';
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   249
    "g x = f x x"
085b5badb8de * Isar/locales: new derived specification elements 'definition', 'abbreviation', 'axiomatization';
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   250
19363
667b5ea637dd refined 'abbreviation';
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   251
  abbreviation
19081
085b5badb8de * Isar/locales: new derived specification elements 'definition', 'abbreviation', 'axiomatization';
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   252
    neq  (infix "=!=" 50)
19363
667b5ea637dd refined 'abbreviation';
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   253
    "x =!= y == ~ (x === y)"
19081
085b5badb8de * Isar/locales: new derived specification elements 'definition', 'abbreviation', 'axiomatization';
wenzelm
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   254
19083
wenzelm
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   255
These specifications may be also used in a locale context.  Then the
wenzelm
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diff changeset
   256
constants being introduced depend on certain fixed parameters, and the
wenzelm
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   257
constant name is qualified by the locale base name.  An internal
wenzelm
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   258
abbreviation takes care for convenient input and output, making the
19088
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diff changeset
   259
parameters implicit and using the original short name.  See also
19083
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   260
HOL/ex/Abstract_NAT.thy for an example of deriving polymorphic
wenzelm
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   261
entities from a monomorphic theory.
wenzelm
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   262
wenzelm
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   263
Presently, abbreviations are only available 'in' a target locale, but
19363
667b5ea637dd refined 'abbreviation';
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   264
not inherited by general import expressions.  Also note that
667b5ea637dd refined 'abbreviation';
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diff changeset
   265
'abbreviation' may be used as a type-safe replacement for 'syntax' +
667b5ea637dd refined 'abbreviation';
wenzelm
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   266
'translations' in common applications.
19084
wenzelm
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diff changeset
   267
19682
c8c301eb965a * Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
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diff changeset
   268
Concrete syntax is attached to specified constants in internal form,
c8c301eb965a * Pure: syntax 'CONST name' produces a fully internalized constant;
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diff changeset
   269
independently of name spaces.  The parse tree representation is
21209
dbb8decc36bc 'const_syntax' command: allow fixed variables, renamed to 'notation';
wenzelm
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diff changeset
   270
slightly different -- use 'notation' instead of raw 'syntax', and
19682
c8c301eb965a * Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
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diff changeset
   271
'translations' with explicit "CONST" markup to accommodate this.
19665
8885951e9c2d * Isar/locale: 'const_syntax';
wenzelm
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   272
19783
82f365a14960 Improved parameter management of locales.
ballarin
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diff changeset
   273
* Isar/locales: improved parameter handling:
82f365a14960 Improved parameter management of locales.
ballarin
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diff changeset
   274
- use of locales "var" and "struct" no longer necessary;
82f365a14960 Improved parameter management of locales.
ballarin
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diff changeset
   275
- parameter renamings are no longer required to be injective.
82f365a14960 Improved parameter management of locales.
ballarin
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diff changeset
   276
  This enables, for example, to define a locale for endomorphisms thus:
82f365a14960 Improved parameter management of locales.
ballarin
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   277
  locale endom = homom mult mult h.
82f365a14960 Improved parameter management of locales.
ballarin
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diff changeset
   278
19931
fb32b43e7f80 Restructured locales with predicates: import is now an interpretation.
ballarin
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diff changeset
   279
* Isar/locales: changed the way locales with predicates are defined.
fb32b43e7f80 Restructured locales with predicates: import is now an interpretation.
ballarin
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diff changeset
   280
Instead of accumulating the specification, the imported expression is
fb32b43e7f80 Restructured locales with predicates: import is now an interpretation.
ballarin
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diff changeset
   281
now an interpretation.
fb32b43e7f80 Restructured locales with predicates: import is now an interpretation.
ballarin
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diff changeset
   282
INCOMPATIBILITY: different normal form of locale expressions.
fb32b43e7f80 Restructured locales with predicates: import is now an interpretation.
ballarin
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diff changeset
   283
In particular, in interpretations of locales with predicates,
fb32b43e7f80 Restructured locales with predicates: import is now an interpretation.
ballarin
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diff changeset
   284
goals repesenting already interpreted fragments are not removed
19984
29bb4659f80a Method intro_locales replaced by intro_locales and unfold_locales.
ballarin
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diff changeset
   285
automatically.  Use methods `intro_locales' and `unfold_locales'; see below.
29bb4659f80a Method intro_locales replaced by intro_locales and unfold_locales.
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diff changeset
   286
29bb4659f80a Method intro_locales replaced by intro_locales and unfold_locales.
ballarin
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diff changeset
   287
* Isar/locales: new methods `intro_locales' and `unfold_locales' provide
29bb4659f80a Method intro_locales replaced by intro_locales and unfold_locales.
ballarin
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diff changeset
   288
backward reasoning on locales predicates.  The methods are aware of
29bb4659f80a Method intro_locales replaced by intro_locales and unfold_locales.
ballarin
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diff changeset
   289
interpretations and discharge corresponding goals.  `intro_locales' is
29bb4659f80a Method intro_locales replaced by intro_locales and unfold_locales.
ballarin
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diff changeset
   290
less aggressive then `unfold_locales' and does not unfold predicates to
29bb4659f80a Method intro_locales replaced by intro_locales and unfold_locales.
ballarin
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diff changeset
   291
assumptions.
19931
fb32b43e7f80 Restructured locales with predicates: import is now an interpretation.
ballarin
parents: 19895
diff changeset
   292
fb32b43e7f80 Restructured locales with predicates: import is now an interpretation.
ballarin
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diff changeset
   293
* Isar/locales: the order in which locale fragments are accumulated
fb32b43e7f80 Restructured locales with predicates: import is now an interpretation.
ballarin
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diff changeset
   294
has changed.  This enables to override declarations from fragments
fb32b43e7f80 Restructured locales with predicates: import is now an interpretation.
ballarin
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diff changeset
   295
due to interpretations -- for example, unwanted simp rules.
fb32b43e7f80 Restructured locales with predicates: import is now an interpretation.
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diff changeset
   296
18233
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diff changeset
   297
* Provers/induct: improved internal context management to support
wenzelm
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diff changeset
   298
local fixes and defines on-the-fly.  Thus explicit meta-level
wenzelm
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diff changeset
   299
connectives !! and ==> are rarely required anymore in inductive goals
wenzelm
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diff changeset
   300
(using object-logic connectives for this purpose has been long
wenzelm
parents: 18145
diff changeset
   301
obsolete anyway).  The subsequent proof patterns illustrate advanced
wenzelm
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diff changeset
   302
techniques of natural induction; general datatypes and inductive sets
18267
5ee688e36eeb * Provers/induct: obtain pattern;
wenzelm
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diff changeset
   303
work analogously (see also src/HOL/Lambda for realistic examples).
5ee688e36eeb * Provers/induct: obtain pattern;
wenzelm
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diff changeset
   304
5ee688e36eeb * Provers/induct: obtain pattern;
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diff changeset
   305
(1) This is how to ``strengthen'' an inductive goal wrt. certain
18239
wenzelm
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diff changeset
   306
parameters:
18233
wenzelm
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diff changeset
   307
wenzelm
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diff changeset
   308
  lemma
wenzelm
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diff changeset
   309
    fixes n :: nat and x :: 'a
wenzelm
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diff changeset
   310
    assumes a: "A n x"
wenzelm
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diff changeset
   311
    shows "P n x"
wenzelm
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diff changeset
   312
    using a                     -- {* make induct insert fact a *}
20503
503ac4c5ef91 induct method: renamed 'fixing' to 'arbitrary';
wenzelm
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diff changeset
   313
  proof (induct n arbitrary: x) -- {* generalize goal to "!!x. A n x ==> P n x" *}
18248
wenzelm
parents: 18239
diff changeset
   314
    case 0
18233
wenzelm
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diff changeset
   315
    show ?case sorry
wenzelm
parents: 18145
diff changeset
   316
  next
18248
wenzelm
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diff changeset
   317
    case (Suc n)
18239
wenzelm
parents: 18238
diff changeset
   318
    note `!!x. A n x ==> P n x` -- {* induction hypothesis, according to induction rule *}
wenzelm
parents: 18238
diff changeset
   319
    note `A (Suc n) x`          -- {* induction premise, stemming from fact a *}
18233
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diff changeset
   320
    show ?case sorry
wenzelm
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diff changeset
   321
  qed
wenzelm
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diff changeset
   322
18267
5ee688e36eeb * Provers/induct: obtain pattern;
wenzelm
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diff changeset
   323
(2) This is how to perform induction over ``expressions of a certain
18233
wenzelm
parents: 18145
diff changeset
   324
form'', using a locally defined inductive parameter n == "a x"
18239
wenzelm
parents: 18238
diff changeset
   325
together with strengthening (the latter is usually required to get
18267
5ee688e36eeb * Provers/induct: obtain pattern;
wenzelm
parents: 18248
diff changeset
   326
sufficiently flexible induction hypotheses):
18233
wenzelm
parents: 18145
diff changeset
   327
wenzelm
parents: 18145
diff changeset
   328
  lemma
wenzelm
parents: 18145
diff changeset
   329
    fixes a :: "'a => nat"
wenzelm
parents: 18145
diff changeset
   330
    assumes a: "A (a x)"
wenzelm
parents: 18145
diff changeset
   331
    shows "P (a x)"
wenzelm
parents: 18145
diff changeset
   332
    using a
20503
503ac4c5ef91 induct method: renamed 'fixing' to 'arbitrary';
wenzelm
parents: 20500
diff changeset
   333
  proof (induct n == "a x" arbitrary: x)
18233
wenzelm
parents: 18145
diff changeset
   334
    ...
wenzelm
parents: 18145
diff changeset
   335
18267
5ee688e36eeb * Provers/induct: obtain pattern;
wenzelm
parents: 18248
diff changeset
   336
See also HOL/Isar_examples/Puzzle.thy for an application of the this
5ee688e36eeb * Provers/induct: obtain pattern;
wenzelm
parents: 18248
diff changeset
   337
particular technique.
5ee688e36eeb * Provers/induct: obtain pattern;
wenzelm
parents: 18248
diff changeset
   338
18901
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   339
(3) This is how to perform existential reasoning ('obtains' or
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   340
'obtain') by induction, while avoiding explicit object-logic
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   341
encodings:
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   342
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   343
  lemma
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   344
    fixes n :: nat
701e53c81c25 * Isar: 'obtains' element;
wenzelm
parents: 18862
diff changeset
   345
    obtains x :: 'a where "P n x" and "Q n x"
20503
503ac4c5ef91 induct method: renamed 'fixing' to 'arbitrary';
wenzelm
parents: 20500
diff changeset
   346
  proof (induct n arbitrary: thesis)
18267
5ee688e36eeb * Provers/induct: obtain pattern;
wenzelm
parents: 18248
diff changeset
   347
    case 0
5ee688e36eeb * Provers/induct: obtain pattern;
wenzelm
parents: 18248
diff changeset
   348
    obtain x where "P 0 x" and "Q 0 x" sorry
18399
651438736fa1 Provers/induct: coinduct;
wenzelm
parents: 18370
diff changeset
   349
    then show thesis by (rule 0)
18267
5ee688e36eeb * Provers/induct: obtain pattern;
wenzelm
parents: 18248
diff changeset
   350
  next
5ee688e36eeb * Provers/induct: obtain pattern;
wenzelm
parents: 18248
diff changeset
   351
    case (Suc n)
5ee688e36eeb * Provers/induct: obtain pattern;
wenzelm
parents: 18248
diff changeset
   352
    obtain x where "P n x" and "Q n x" by (rule Suc.hyps)
5ee688e36eeb * Provers/induct: obtain pattern;
wenzelm
parents: 18248
diff changeset
   353
    obtain x where "P (Suc n) x" and "Q (Suc n) x" sorry
5ee688e36eeb * Provers/induct: obtain pattern;
wenzelm
parents: 18248
diff changeset
   354
    then show thesis by (rule Suc.prems)
5ee688e36eeb * Provers/induct: obtain pattern;
wenzelm
parents: 18248
diff changeset
   355
  qed
5ee688e36eeb * Provers/induct: obtain pattern;
wenzelm
parents: 18248
diff changeset
   356
20503
503ac4c5ef91 induct method: renamed 'fixing' to 'arbitrary';
wenzelm
parents: 20500
diff changeset
   357
Here the 'arbitrary: thesis' specification essentially modifies the
503ac4c5ef91 induct method: renamed 'fixing' to 'arbitrary';
wenzelm
parents: 20500
diff changeset
   358
scope of the formal thesis parameter, in order to the get the whole
18267
5ee688e36eeb * Provers/induct: obtain pattern;
wenzelm
parents: 18248
diff changeset
   359
existence statement through the induction as expected.
18233
wenzelm
parents: 18145
diff changeset
   360
18506
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   361
* Provers/induct: mutual induction rules are now specified as a list
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   362
of rule sharing the same induction cases.  HOL packages usually
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   363
provide foo_bar.inducts for mutually defined items foo and bar
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   364
(e.g. inductive sets or datatypes).  INCOMPATIBILITY, users need to
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   365
specify mutual induction rules differently, i.e. like this:
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   366
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   367
  (induct rule: foo_bar.inducts)
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   368
  (induct set: foo bar)
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   369
  (induct type: foo bar)
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   370
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   371
The ML function ProjectRule.projections turns old-style rules into the
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   372
new format.
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   373
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   374
* Provers/induct: improved handling of simultaneous goals.  Instead of
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   375
introducing object-level conjunction, the statement is now split into
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   376
several conclusions, while the corresponding symbolic cases are
18601
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   377
nested accordingly.  INCOMPATIBILITY, proofs need to be structured
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   378
explicitly.  For example:
18480
8ac97f71369d * induct: improved treatment of mutual goals and mutual rules;
wenzelm
parents: 18450
diff changeset
   379
8ac97f71369d * induct: improved treatment of mutual goals and mutual rules;
wenzelm
parents: 18450
diff changeset
   380
  lemma
8ac97f71369d * induct: improved treatment of mutual goals and mutual rules;
wenzelm
parents: 18450
diff changeset
   381
    fixes n :: nat
8ac97f71369d * induct: improved treatment of mutual goals and mutual rules;
wenzelm
parents: 18450
diff changeset
   382
    shows "P n" and "Q n"
8ac97f71369d * induct: improved treatment of mutual goals and mutual rules;
wenzelm
parents: 18450
diff changeset
   383
  proof (induct n)
18601
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   384
    case 0 case 1
18480
8ac97f71369d * induct: improved treatment of mutual goals and mutual rules;
wenzelm
parents: 18450
diff changeset
   385
    show "P 0" sorry
8ac97f71369d * induct: improved treatment of mutual goals and mutual rules;
wenzelm
parents: 18450
diff changeset
   386
  next
18601
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   387
    case 0 case 2
18480
8ac97f71369d * induct: improved treatment of mutual goals and mutual rules;
wenzelm
parents: 18450
diff changeset
   388
    show "Q 0" sorry
8ac97f71369d * induct: improved treatment of mutual goals and mutual rules;
wenzelm
parents: 18450
diff changeset
   389
  next
18601
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   390
    case (Suc n) case 1
18480
8ac97f71369d * induct: improved treatment of mutual goals and mutual rules;
wenzelm
parents: 18450
diff changeset
   391
    note `P n` and `Q n`
8ac97f71369d * induct: improved treatment of mutual goals and mutual rules;
wenzelm
parents: 18450
diff changeset
   392
    show "P (Suc n)" sorry
8ac97f71369d * induct: improved treatment of mutual goals and mutual rules;
wenzelm
parents: 18450
diff changeset
   393
  next
18601
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   394
    case (Suc n) case 2
18480
8ac97f71369d * induct: improved treatment of mutual goals and mutual rules;
wenzelm
parents: 18450
diff changeset
   395
    note `P n` and `Q n`
8ac97f71369d * induct: improved treatment of mutual goals and mutual rules;
wenzelm
parents: 18450
diff changeset
   396
    show "Q (Suc n)" sorry
8ac97f71369d * induct: improved treatment of mutual goals and mutual rules;
wenzelm
parents: 18450
diff changeset
   397
  qed
8ac97f71369d * induct: improved treatment of mutual goals and mutual rules;
wenzelm
parents: 18450
diff changeset
   398
18601
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   399
The split into subcases may be deferred as follows -- this is
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   400
particularly relevant for goal statements with local premises.
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   401
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   402
  lemma
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   403
    fixes n :: nat
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   404
    shows "A n ==> P n" and "B n ==> Q n"
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   405
  proof (induct n)
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   406
    case 0
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   407
    {
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   408
      case 1
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   409
      note `A 0`
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   410
      show "P 0" sorry
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   411
    next
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   412
      case 2
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   413
      note `B 0`
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   414
      show "Q 0" sorry
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   415
    }
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   416
  next
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   417
    case (Suc n)
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   418
    note `A n ==> P n` and `B n ==> Q n`
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   419
    {
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   420
      case 1
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   421
      note `A (Suc n)`
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   422
      show "P (Suc n)" sorry
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   423
    next
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   424
      case 2
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   425
      note `B (Suc n)`
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   426
      show "Q (Suc n)" sorry
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   427
    }
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   428
  qed
b248754b60bc * Provers/induct: improved simultaneous goals -- nested cases;
wenzelm
parents: 18590
diff changeset
   429
18506
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   430
If simultaneous goals are to be used with mutual rules, the statement
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   431
needs to be structured carefully as a two-level conjunction, using
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   432
lists of propositions separated by 'and':
96260fb11449 * Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents: 18495
diff changeset
   433
18507
wenzelm
parents: 18506
diff changeset
   434
  lemma
wenzelm
parents: 18506
diff changeset
   435
    shows "a : A ==> P1 a"
wenzelm
parents: 18506
diff changeset
   436
          "a : A ==> P2 a"
wenzelm
parents: 18506
diff changeset
   437
      and "b : B ==> Q1 b"
wenzelm
parents: 18506
diff changeset
   438
          "b : B ==> Q2 b"
wenzelm
parents: 18506
diff changeset
   439
          "b : B ==> Q3 b"
wenzelm
parents: 18506
diff changeset
   440
  proof (induct set: A B)
18480
8ac97f71369d * induct: improved treatment of mutual goals and mutual rules;
wenzelm
parents: 18450
diff changeset
   441
18399
651438736fa1 Provers/induct: coinduct;
wenzelm
parents: 18370
diff changeset
   442
* Provers/induct: support coinduction as well.  See
651438736fa1 Provers/induct: coinduct;
wenzelm
parents: 18370
diff changeset
   443
src/HOL/Library/Coinductive_List.thy for various examples.
651438736fa1 Provers/induct: coinduct;
wenzelm
parents: 18370
diff changeset
   444
20919
dab803075c62 attribute "symmetric": standardized schematic variables;
wenzelm
parents: 20857
diff changeset
   445
* Attribute "symmetric" produces result with standardized schematic
dab803075c62 attribute "symmetric": standardized schematic variables;
wenzelm
parents: 20857
diff changeset
   446
variables (index 0).  Potential INCOMPATIBILITY.
dab803075c62 attribute "symmetric": standardized schematic variables;
wenzelm
parents: 20857
diff changeset
   447
18674
98d380757893 *** empty log message ***
nipkow
parents: 18644
diff changeset
   448
* Simplifier: by default the simplifier trace only shows top level rewrites
98d380757893 *** empty log message ***
nipkow
parents: 18644
diff changeset
   449
now. That is, trace_simp_depth_limit is set to 1 by default. Thus there is
98d380757893 *** empty log message ***
nipkow
parents: 18644
diff changeset
   450
less danger of being flooded by the trace. The trace indicates where parts
98d380757893 *** empty log message ***
nipkow
parents: 18644
diff changeset
   451
have been suppressed.
98d380757893 *** empty log message ***
nipkow
parents: 18644
diff changeset
   452
  
18536
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
   453
* Provers/classical: removed obsolete classical version of elim_format
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
   454
attribute; classical elim/dest rules are now treated uniformly when
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
   455
manipulating the claset.
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
   456
18694
83f50ac6ddcb * Classical: optional weight for attributes;
wenzelm
parents: 18687
diff changeset
   457
* Provers/classical: stricter checks to ensure that supplied intro,
83f50ac6ddcb * Classical: optional weight for attributes;
wenzelm
parents: 18687
diff changeset
   458
dest and elim rules are well-formed; dest and elim rules must have at
83f50ac6ddcb * Classical: optional weight for attributes;
wenzelm
parents: 18687
diff changeset
   459
least one premise.
83f50ac6ddcb * Classical: optional weight for attributes;
wenzelm
parents: 18687
diff changeset
   460
83f50ac6ddcb * Classical: optional weight for attributes;
wenzelm
parents: 18687
diff changeset
   461
* Provers/classical: attributes dest/elim/intro take an optional
18695
wenzelm
parents: 18694
diff changeset
   462
weight argument for the rule (just as the Pure versions).  Weights are
18696
wenzelm
parents: 18695
diff changeset
   463
ignored by automated tools, but determine the search order of single
18694
83f50ac6ddcb * Classical: optional weight for attributes;
wenzelm
parents: 18687
diff changeset
   464
rule steps.
18557
60a0f9caa0a2 Provers/classical: stricter checks to ensure that supplied intro, dest and
paulson
parents: 18549
diff changeset
   465
18536
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
   466
* Syntax: input syntax now supports dummy variable binding "%_. b",
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
   467
where the body does not mention the bound variable.  Note that dummy
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
   468
patterns implicitly depend on their context of bounds, which makes
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
   469
"{_. _}" match any set comprehension as expected.  Potential
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
   470
INCOMPATIBILITY -- parse translations need to cope with syntactic
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
   471
constant "_idtdummy" in the binding position.
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
   472
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
   473
* Syntax: removed obsolete syntactic constant "_K" and its associated
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
   474
parse translation.  INCOMPATIBILITY -- use dummy abstraction instead,
ab3f32f86847 * Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents: 18507
diff changeset
   475
for example "A -> B" => "Pi A (%_. B)".
17779
407bea05c2da added dummy variable binding;
wenzelm
parents: 17754
diff changeset
   476
20582
ebd0e03c6a9b * Pure: 'class_deps' command visualizes the subclass relation;
wenzelm
parents: 20503
diff changeset
   477
* Pure: 'class_deps' command visualizes the subclass relation, using
ebd0e03c6a9b * Pure: 'class_deps' command visualizes the subclass relation;
wenzelm
parents: 20503
diff changeset
   478
the graph browser tool.
ebd0e03c6a9b * Pure: 'class_deps' command visualizes the subclass relation;
wenzelm
parents: 20503
diff changeset
   479
20620
8b26f58c5646 * Pure: 'print_theory' now suppresses entities with internal name;
wenzelm
parents: 20607
diff changeset
   480
* Pure: 'print_theory' now suppresses entities with internal name
8b26f58c5646 * Pure: 'print_theory' now suppresses entities with internal name;
wenzelm
parents: 20607
diff changeset
   481
(trailing "_") by default; use '!' option for full details.
8b26f58c5646 * Pure: 'print_theory' now suppresses entities with internal name;
wenzelm
parents: 20607
diff changeset
   482
17865
5b0c3dcfbad2 * antiquotations ML_type, ML_struct;
wenzelm
parents: 17809
diff changeset
   483
17806
b6a547bfb419 *** empty log message ***
nipkow
parents: 17780
diff changeset
   484
*** HOL ***
b6a547bfb419 *** empty log message ***
nipkow
parents: 17780
diff changeset
   485
21320
d240748a2cf5 updated
krauss
parents: 21308
diff changeset
   486
* Replaced "auto_term" by the conceptually simpler method "relation",
d240748a2cf5 updated
krauss
parents: 21308
diff changeset
   487
which just applies the instantiated termination rule with no further
d240748a2cf5 updated
krauss
parents: 21308
diff changeset
   488
simplifications.
d240748a2cf5 updated
krauss
parents: 21308
diff changeset
   489
INCOMPATIBILITY: 
d240748a2cf5 updated
krauss
parents: 21308
diff changeset
   490
Replace 
d240748a2cf5 updated
krauss
parents: 21308
diff changeset
   491
        termination by (auto_term "MYREL")
d240748a2cf5 updated
krauss
parents: 21308
diff changeset
   492
with 
d240748a2cf5 updated
krauss
parents: 21308
diff changeset
   493
        termination by (relation "MYREL") auto
d240748a2cf5 updated
krauss
parents: 21308
diff changeset
   494
21240
8e75fb38522c Made "termination by lexicographic_order" the default for "fun" definitions.
krauss
parents: 21226
diff changeset
   495
* Automated termination proofs "by lexicographic_order" are now
8e75fb38522c Made "termination by lexicographic_order" the default for "fun" definitions.
krauss
parents: 21226
diff changeset
   496
included in the abbreviated function command "fun". No explicit
8e75fb38522c Made "termination by lexicographic_order" the default for "fun" definitions.
krauss
parents: 21226
diff changeset
   497
"termination" command is necessary anymore.
8e75fb38522c Made "termination by lexicographic_order" the default for "fun" definitions.
krauss
parents: 21226
diff changeset
   498
INCOMPATIBILITY: If a "fun"-definition cannot be proved terminating by
8e75fb38522c Made "termination by lexicographic_order" the default for "fun" definitions.
krauss
parents: 21226
diff changeset
   499
a lexicographic size order, then the command fails. Use the expanded
8e75fb38522c Made "termination by lexicographic_order" the default for "fun" definitions.
krauss
parents: 21226
diff changeset
   500
version "function" for these cases.
8e75fb38522c Made "termination by lexicographic_order" the default for "fun" definitions.
krauss
parents: 21226
diff changeset
   501
8e75fb38522c Made "termination by lexicographic_order" the default for "fun" definitions.
krauss
parents: 21226
diff changeset
   502
* New method "lexicographic_order" automatically synthesizes
8e75fb38522c Made "termination by lexicographic_order" the default for "fun" definitions.
krauss
parents: 21226
diff changeset
   503
termination relations as lexicographic combinations of size measures. 
8e75fb38522c Made "termination by lexicographic_order" the default for "fun" definitions.
krauss
parents: 21226
diff changeset
   504
Usage for (function package) termination proofs:
8e75fb38522c Made "termination by lexicographic_order" the default for "fun" definitions.
krauss
parents: 21226
diff changeset
   505
8e75fb38522c Made "termination by lexicographic_order" the default for "fun" definitions.
krauss
parents: 21226
diff changeset
   506
termination 
8e75fb38522c Made "termination by lexicographic_order" the default for "fun" definitions.
krauss
parents: 21226
diff changeset
   507
by lexicographic_order
8e75fb38522c Made "termination by lexicographic_order" the default for "fun" definitions.
krauss
parents: 21226
diff changeset
   508
21226
a607ae87ee81 field-update in records is generalised to take a function on the field
schirmer
parents: 21215
diff changeset
   509
* Records: generalised field-update to take a function on the field 
a607ae87ee81 field-update in records is generalised to take a function on the field
schirmer
parents: 21215
diff changeset
   510
rather than the new value: r(|A := x|) is translated to A_update (K x) r
a607ae87ee81 field-update in records is generalised to take a function on the field
schirmer
parents: 21215
diff changeset
   511
The K-combinator that is internally used is called K_record.
a607ae87ee81 field-update in records is generalised to take a function on the field
schirmer
parents: 21215
diff changeset
   512
INCOMPATIBILITY: Usage of the plain update functions has to be
a607ae87ee81 field-update in records is generalised to take a function on the field
schirmer
parents: 21215
diff changeset
   513
adapted.
a607ae87ee81 field-update in records is generalised to take a function on the field
schirmer
parents: 21215
diff changeset
   514
 
21200
2f6e276bfb93 updated NEWS
krauss
parents: 21170
diff changeset
   515
* axclass "semiring_0" now contains annihilation axioms 
2f6e276bfb93 updated NEWS
krauss
parents: 21170
diff changeset
   516
("x * 0 = 0","0 * x = 0"), which are required for a semiring. Richer 
2f6e276bfb93 updated NEWS
krauss
parents: 21170
diff changeset
   517
structures do not inherit from semiring_0 anymore, because this property 
2f6e276bfb93 updated NEWS
krauss
parents: 21170
diff changeset
   518
is a theorem there, not an axiom.
2f6e276bfb93 updated NEWS
krauss
parents: 21170
diff changeset
   519
INCOMPATIBILITY: In instances of semiring_0, there is more to prove, but 
2f6e276bfb93 updated NEWS
krauss
parents: 21170
diff changeset
   520
this is mostly trivial.
2f6e276bfb93 updated NEWS
krauss
parents: 21170
diff changeset
   521
2f6e276bfb93 updated NEWS
krauss
parents: 21170
diff changeset
   522
* axclass "recpower" was generalized to arbitrary monoids, not just 
2f6e276bfb93 updated NEWS
krauss
parents: 21170
diff changeset
   523
commutative semirings.
2f6e276bfb93 updated NEWS
krauss
parents: 21170
diff changeset
   524
INCOMPATIBILITY: If you use recpower and need commutativity or a semiring
2f6e276bfb93 updated NEWS
krauss
parents: 21170
diff changeset
   525
property, add the corresponding classes.
2f6e276bfb93 updated NEWS
krauss
parents: 21170
diff changeset
   526
21215
7c9337a0e30a made locale partial_order compatible with axclass order
haftmann
parents: 21209
diff changeset
   527
* Locale Lattic_Locales.partial_order changed (to achieve consistency with
7c9337a0e30a made locale partial_order compatible with axclass order
haftmann
parents: 21209
diff changeset
   528
  axclass order):
7c9337a0e30a made locale partial_order compatible with axclass order
haftmann
parents: 21209
diff changeset
   529
  - moved to Orderings.partial_order
7c9337a0e30a made locale partial_order compatible with axclass order
haftmann
parents: 21209
diff changeset
   530
  - additional parameter ``less''
7c9337a0e30a made locale partial_order compatible with axclass order
haftmann
parents: 21209
diff changeset
   531
  INCOMPATIBILITY.
7c9337a0e30a made locale partial_order compatible with axclass order
haftmann
parents: 21209
diff changeset
   532
21099
6a0cdb6f72d3 (added entry)
haftmann
parents: 21056
diff changeset
   533
* Constant "List.list_all2" in List.thy now uses authentic syntax.
6a0cdb6f72d3 (added entry)
haftmann
parents: 21056
diff changeset
   534
INCOMPATIBILITY: translations containing list_all2 may go wrong. On Isar
6a0cdb6f72d3 (added entry)
haftmann
parents: 21056
diff changeset
   535
level, use abbreviations instead.
6a0cdb6f72d3 (added entry)
haftmann
parents: 21056
diff changeset
   536
6a0cdb6f72d3 (added entry)
haftmann
parents: 21056
diff changeset
   537
* Constant "List.op mem" in List.thy now has proper name: "List.memberl"
6a0cdb6f72d3 (added entry)
haftmann
parents: 21056
diff changeset
   538
INCOMPATIBILITY: rarely occuring name references (e.g. ``List.op mem.simps'')
6a0cdb6f72d3 (added entry)
haftmann
parents: 21056
diff changeset
   539
require renaming (e.g. ``List.memberl.simps'').
6a0cdb6f72d3 (added entry)
haftmann
parents: 21056
diff changeset
   540
20712
b3cd1233167f renamed 0 and 1 to HOL.zero and HOL.one respectivly
haftmann
parents: 20620
diff changeset
   541
* Renamed constants in HOL.thy:
b3cd1233167f renamed 0 and 1 to HOL.zero and HOL.one respectivly
haftmann
parents: 20620
diff changeset
   542
    0      ~> HOL.zero
b3cd1233167f renamed 0 and 1 to HOL.zero and HOL.one respectivly
haftmann
parents: 20620
diff changeset
   543
    1      ~> HOL.one
b3cd1233167f renamed 0 and 1 to HOL.zero and HOL.one respectivly
haftmann
parents: 20620
diff changeset
   544
INCOMPATIBILITY: ML code directly refering to constant names may need adaption
b3cd1233167f renamed 0 and 1 to HOL.zero and HOL.one respectivly
haftmann
parents: 20620
diff changeset
   545
This in general only affects hand-written proof tactics, simprocs and so on.
b3cd1233167f renamed 0 and 1 to HOL.zero and HOL.one respectivly
haftmann
parents: 20620
diff changeset
   546
21215
7c9337a0e30a made locale partial_order compatible with axclass order
haftmann
parents: 21209
diff changeset
   547
* New theory Code_Generator providing class 'eq' with constant 'eq',
20607
926a76a84e97 Operational Equality
haftmann
parents: 20582
diff changeset
   548
allowing for code generation with polymorphic equality.
926a76a84e97 Operational Equality
haftmann
parents: 20582
diff changeset
   549
20485
3078fd2eec7b got rid of Numeral.bin type
haftmann
parents: 20453
diff changeset
   550
* Numeral syntax: type 'bin' which was a mere type copy of 'int' has been
20500
11da1ce8dbd8 hid succ, pred in Numeral.thy
haftmann
parents: 20485
diff changeset
   551
abandoned in favour of plain 'int'. INCOMPATIBILITY -- Significant changes
11da1ce8dbd8 hid succ, pred in Numeral.thy
haftmann
parents: 20485
diff changeset
   552
for setting up numeral syntax for types:
20485
3078fd2eec7b got rid of Numeral.bin type
haftmann
parents: 20453
diff changeset
   553
3078fd2eec7b got rid of Numeral.bin type
haftmann
parents: 20453
diff changeset
   554
  - new constants Numeral.pred and Numeral.succ instead
3078fd2eec7b got rid of Numeral.bin type
haftmann
parents: 20453
diff changeset
   555
      of former Numeral.bin_pred and Numeral.bin_succ.
3078fd2eec7b got rid of Numeral.bin type
haftmann
parents: 20453
diff changeset
   556
  - Use integer operations instead of bin_add, bin_mult and so on.
3078fd2eec7b got rid of Numeral.bin type
haftmann
parents: 20453
diff changeset
   557
  - Numeral simplification theorems named Numeral.numeral_simps instead of Bin_simps.
3078fd2eec7b got rid of Numeral.bin type
haftmann
parents: 20453
diff changeset
   558
  - ML structure Bin_Simprocs now named Int_Numeral_Base_Simprocs.
3078fd2eec7b got rid of Numeral.bin type
haftmann
parents: 20453
diff changeset
   559
3078fd2eec7b got rid of Numeral.bin type
haftmann
parents: 20453
diff changeset
   560
See HOL/Integ/IntArith.thy for an example setup.
3078fd2eec7b got rid of Numeral.bin type
haftmann
parents: 20453
diff changeset
   561
19895
cab56c949350 *** empty log message ***
nipkow
parents: 19855
diff changeset
   562
* New top level command 'normal_form' computes the normal form of a term
cab56c949350 *** empty log message ***
nipkow
parents: 19855
diff changeset
   563
that may contain free variables. For example 'normal_form "rev[a,b,c]"'
cab56c949350 *** empty log message ***
nipkow
parents: 19855
diff changeset
   564
prints '[b,c,a]'. This command is suitable for heavy-duty computations
cab56c949350 *** empty log message ***
nipkow
parents: 19855
diff changeset
   565
because the functions are compiled to ML first.
cab56c949350 *** empty log message ***
nipkow
parents: 19855
diff changeset
   566
INCOMPATIBILITY: new keywords 'normal_form' must quoted when used as
cab56c949350 *** empty log message ***
nipkow
parents: 19855
diff changeset
   567
an identifier.
cab56c949350 *** empty log message ***
nipkow
parents: 19855
diff changeset
   568
17996
71f250e05e05 * HOL: alternative iff syntax;
wenzelm
parents: 17991
diff changeset
   569
* Alternative iff syntax "A <-> B" for equality on bool (with priority
71f250e05e05 * HOL: alternative iff syntax;
wenzelm
parents: 17991
diff changeset
   570
25 like -->); output depends on the "iff" print_mode, the default is
71f250e05e05 * HOL: alternative iff syntax;
wenzelm
parents: 17991
diff changeset
   571
"A = B" (with priority 50).
71f250e05e05 * HOL: alternative iff syntax;
wenzelm
parents: 17991
diff changeset
   572
19279
48b527d0331b Renamed setsum_mult to setsum_right_distrib.
ballarin
parents: 19277
diff changeset
   573
* Renamed constants in HOL.thy and Orderings.thy:
19233
77ca20b0ed77 renamed HOL + - * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents: 19226
diff changeset
   574
    op +   ~> HOL.plus
77ca20b0ed77 renamed HOL + - * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents: 19226
diff changeset
   575
    op -   ~> HOL.minus
77ca20b0ed77 renamed HOL + - * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents: 19226
diff changeset
   576
    uminus ~> HOL.uminus
77ca20b0ed77 renamed HOL + - * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents: 19226
diff changeset
   577
    op *   ~> HOL.times
19277
f7602e74d948 renamed op < <= to Orderings.less(_eq)
haftmann
parents: 19263
diff changeset
   578
    op <   ~> Orderings.less
f7602e74d948 renamed op < <= to Orderings.less(_eq)
haftmann
parents: 19263
diff changeset
   579
    op <=  ~> Orderings.less_eq
19233
77ca20b0ed77 renamed HOL + - * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents: 19226
diff changeset
   580
77ca20b0ed77 renamed HOL + - * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents: 19226
diff changeset
   581
Adaptions may be required in the following cases:
77ca20b0ed77 renamed HOL + - * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents: 19226
diff changeset
   582
19377
1f717bd6b7ea *** empty log message ***
nipkow
parents: 19363
diff changeset
   583
a) User-defined constants using any of the names "plus", "minus", "times",
1f717bd6b7ea *** empty log message ***
nipkow
parents: 19363
diff changeset
   584
"less" or "less_eq". The standard syntax translations for "+", "-" and "*"
1f717bd6b7ea *** empty log message ***
nipkow
parents: 19363
diff changeset
   585
may go wrong.
19233
77ca20b0ed77 renamed HOL + - * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents: 19226
diff changeset
   586
INCOMPATIBILITY: use more specific names.
77ca20b0ed77 renamed HOL + - * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents: 19226
diff changeset
   587
19277
f7602e74d948 renamed op < <= to Orderings.less(_eq)
haftmann
parents: 19263
diff changeset
   588
b) Variables named "plus", "minus", "times", "less", "less_eq"
19233
77ca20b0ed77 renamed HOL + - * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents: 19226
diff changeset
   589
INCOMPATIBILITY: use more specific names.
77ca20b0ed77 renamed HOL + - * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents: 19226
diff changeset
   590
19377
1f717bd6b7ea *** empty log message ***
nipkow
parents: 19363
diff changeset
   591
c) Permutative equations (e.g. "a + b = b + a")
1f717bd6b7ea *** empty log message ***
nipkow
parents: 19363
diff changeset
   592
Since the change of names also changes the order of terms, permutative
1f717bd6b7ea *** empty log message ***
nipkow
parents: 19363
diff changeset
   593
rewrite rules may get applied in a different order. Experience shows that
1f717bd6b7ea *** empty log message ***
nipkow
parents: 19363
diff changeset
   594
this is rarely the case (only two adaptions in the whole Isabelle
1f717bd6b7ea *** empty log message ***
nipkow
parents: 19363
diff changeset
   595
distribution).
1f717bd6b7ea *** empty log message ***
nipkow
parents: 19363
diff changeset
   596
INCOMPATIBILITY: rewrite proofs
19233
77ca20b0ed77 renamed HOL + - * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents: 19226
diff changeset
   597
77ca20b0ed77 renamed HOL + - * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents: 19226
diff changeset
   598
d) ML code directly refering to constant names
77ca20b0ed77 renamed HOL + - * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents: 19226
diff changeset
   599
This in general only affects hand-written proof tactics, simprocs and so on.
77ca20b0ed77 renamed HOL + - * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents: 19226
diff changeset
   600
INCOMPATIBILITY: grep your sourcecode and replace names.
77ca20b0ed77 renamed HOL + - * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents: 19226
diff changeset
   601
21265
b8db43faaf9e HOL: less/less_eq on bool, modified syntax;
wenzelm
parents: 21256
diff changeset
   602
* Relations less (<) and less_eq (<=) are also available on type bool.
b8db43faaf9e HOL: less/less_eq on bool, modified syntax;
wenzelm
parents: 21256
diff changeset
   603
Modified syntax to disallow nesting without explicit parentheses,
b8db43faaf9e HOL: less/less_eq on bool, modified syntax;
wenzelm
parents: 21256
diff changeset
   604
e.g. "(x < y) < z" or "x < (y < z)", but NOT "x < y < z".
b8db43faaf9e HOL: less/less_eq on bool, modified syntax;
wenzelm
parents: 21256
diff changeset
   605
18674
98d380757893 *** empty log message ***
nipkow
parents: 18644
diff changeset
   606
* "LEAST x:A. P" expands to "LEAST x. x:A & P" (input only).
98d380757893 *** empty log message ***
nipkow
parents: 18644
diff changeset
   607
20716
a6686a8e1b68 Changed precedence of "op O" (relation composition) from 60 to 75.
krauss
parents: 20712
diff changeset
   608
* Relation composition operator "op O" now has precedence 75 and binds
a6686a8e1b68 Changed precedence of "op O" (relation composition) from 60 to 75.
krauss
parents: 20712
diff changeset
   609
stronger than union and intersection. INCOMPATIBILITY.
a6686a8e1b68 Changed precedence of "op O" (relation composition) from 60 to 75.
krauss
parents: 20712
diff changeset
   610
19377
1f717bd6b7ea *** empty log message ***
nipkow
parents: 19363
diff changeset
   611
* The old set interval syntax "{m..n(}" (and relatives) has been removed.
1f717bd6b7ea *** empty log message ***
nipkow
parents: 19363
diff changeset
   612
  Use "{m..<n}" (and relatives) instead.
1f717bd6b7ea *** empty log message ***
nipkow
parents: 19363
diff changeset
   613
17865
5b0c3dcfbad2 * antiquotations ML_type, ML_struct;
wenzelm
parents: 17809
diff changeset
   614
* In the context of the assumption "~(s = t)" the Simplifier rewrites
5b0c3dcfbad2 * antiquotations ML_type, ML_struct;
wenzelm
parents: 17809
diff changeset
   615
"t = s" to False (by simproc "neq_simproc").  For backward
5b0c3dcfbad2 * antiquotations ML_type, ML_struct;
wenzelm
parents: 17809
diff changeset
   616
compatibility this can be disabled by ML "reset use_neq_simproc".
17779
407bea05c2da added dummy variable binding;
wenzelm
parents: 17754
diff changeset
   617
18979
f0873dcc880f *** empty log message ***
nipkow
parents: 18910
diff changeset
   618
* "m dvd n" where m and n are numbers is evaluated to True/False by simp.
f0873dcc880f *** empty log message ***
nipkow
parents: 18910
diff changeset
   619
19211
307dfa3f9e66 *** empty log message ***
nipkow
parents: 19088
diff changeset
   620
* Theorem Cons_eq_map_conv no longer has attribute `simp'.
307dfa3f9e66 *** empty log message ***
nipkow
parents: 19088
diff changeset
   621
19279
48b527d0331b Renamed setsum_mult to setsum_right_distrib.
ballarin
parents: 19277
diff changeset
   622
* Theorem setsum_mult renamed to setsum_right_distrib.
48b527d0331b Renamed setsum_mult to setsum_right_distrib.
ballarin
parents: 19277
diff changeset
   623
19211
307dfa3f9e66 *** empty log message ***
nipkow
parents: 19088
diff changeset
   624
* Prefer ex1I over ex_ex1I in single-step reasoning, e.g. by the
307dfa3f9e66 *** empty log message ***
nipkow
parents: 19088
diff changeset
   625
'rule' method.
307dfa3f9e66 *** empty log message ***
nipkow
parents: 19088
diff changeset
   626
17809
195045659c06 Tactics sat and satx reimplemented, several improvements
webertj
parents: 17806
diff changeset
   627
* Tactics 'sat' and 'satx' reimplemented, several improvements: goals
195045659c06 Tactics sat and satx reimplemented, several improvements
webertj
parents: 17806
diff changeset
   628
no longer need to be stated as "<prems> ==> False", equivalences (i.e.
17865
5b0c3dcfbad2 * antiquotations ML_type, ML_struct;
wenzelm
parents: 17809
diff changeset
   629
"=" on type bool) are handled, variable names of the form "lit_<n>"
5b0c3dcfbad2 * antiquotations ML_type, ML_struct;
wenzelm
parents: 17809
diff changeset
   630
are no longer reserved, significant speedup.
5b0c3dcfbad2 * antiquotations ML_type, ML_struct;
wenzelm
parents: 17809
diff changeset
   631
20136
8e92a8f9720b support for MiniSat proof traces added
webertj
parents: 20118
diff changeset
   632
* Tactics 'sat' and 'satx' can now replay MiniSat proof traces.  zChaff is
8e92a8f9720b support for MiniSat proof traces added
webertj
parents: 20118
diff changeset
   633
still supported as well.
8e92a8f9720b support for MiniSat proof traces added
webertj
parents: 20118
diff changeset
   634
18480
8ac97f71369d * induct: improved treatment of mutual goals and mutual rules;
wenzelm
parents: 18450
diff changeset
   635
* inductive and datatype: provide projections of mutual rules, bundled
8ac97f71369d * induct: improved treatment of mutual goals and mutual rules;
wenzelm
parents: 18450
diff changeset
   636
as foo_bar.inducts;
8ac97f71369d * induct: improved treatment of mutual goals and mutual rules;
wenzelm
parents: 18450
diff changeset
   637
21256
47195501ecf7 moved theories Parity, GCD, Binomial to Library;
wenzelm
parents: 21241
diff changeset
   638
* Library: moved theories Parity, GCD, Binomial, Infinite_Set to Library.
47195501ecf7 moved theories Parity, GCD, Binomial to Library;
wenzelm
parents: 21241
diff changeset
   639
47195501ecf7 moved theories Parity, GCD, Binomial to Library;
wenzelm
parents: 21241
diff changeset
   640
* Library: moved theory Accessible_Part to main HOL.
19572
a4b3176f19dd * Library: theory Accessible_Part has been move to main HOL.
wenzelm
parents: 19508
diff changeset
   641
18446
wenzelm
parents: 18422
diff changeset
   642
* Library: added theory Coinductive_List of potentially infinite lists
wenzelm
parents: 18422
diff changeset
   643
as greatest fixed-point.
18399
651438736fa1 Provers/induct: coinduct;
wenzelm
parents: 18370
diff changeset
   644
19254
efaf5d47049e Pure: no_translations;
wenzelm
parents: 19252
diff changeset
   645
* Library: added theory AssocList which implements (finite) maps as
19252
1f7c69a5faac entry for Library/AssocList
schirmer
parents: 19240
diff changeset
   646
association lists.
17809
195045659c06 Tactics sat and satx reimplemented, several improvements
webertj
parents: 17806
diff changeset
   647
20807
wenzelm
parents: 20716
diff changeset
   648
* New proof method "evaluation" for efficiently solving a goal (i.e. a
wenzelm
parents: 20716
diff changeset
   649
boolean expression) by compiling it to ML. The goal is "proved" (via
wenzelm
parents: 20716
diff changeset
   650
the oracle "Evaluation") if it evaluates to True.
wenzelm
parents: 20716
diff changeset
   651
wenzelm
parents: 20716
diff changeset
   652
* Linear arithmetic now splits certain operators (e.g. min, max, abs)
wenzelm
parents: 20716
diff changeset
   653
also when invoked by the simplifier.  This results in the simplifier
21056
2cfe839e8d58 Symtab.foldl replaced by Symtab.fold
haftmann
parents: 21041
diff changeset
   654
being more powerful on arithmetic goals.  INCOMPATIBILITY.  Set
20807
wenzelm
parents: 20716
diff changeset
   655
fast_arith_split_limit to 0 to obtain the old behavior.
20217
25b068a99d2b linear arithmetic splits certain operators (e.g. min, max, abs)
webertj
parents: 20188
diff changeset
   656
20067
26bac504ef90 hex and binary numerals (contributed by Rafal Kolanski)
kleing
parents: 20040
diff changeset
   657
* Support for hex (0x20) and binary (0b1001) numerals. 
19254
efaf5d47049e Pure: no_translations;
wenzelm
parents: 19252
diff changeset
   658
20807
wenzelm
parents: 20716
diff changeset
   659
* New method: reify eqs (t), where eqs are equations for an
wenzelm
parents: 20716
diff changeset
   660
interpretation I :: 'a list => 'b => 'c and t::'c is an optional
wenzelm
parents: 20716
diff changeset
   661
parameter, computes a term s::'b and a list xs::'a list and proves the
wenzelm
parents: 20716
diff changeset
   662
theorem I xs s = t. This is also known as reification or quoting. The
wenzelm
parents: 20716
diff changeset
   663
resulting theorem is applied to the subgoal to substitute t with I xs
wenzelm
parents: 20716
diff changeset
   664
s.  If t is omitted, the subgoal itself is reified.
wenzelm
parents: 20716
diff changeset
   665
wenzelm
parents: 20716
diff changeset
   666
* New method: reflection corr_thm eqs (t). The parameters eqs and (t)
wenzelm
parents: 20716
diff changeset
   667
are as explained above. corr_thm is a theorem for I vs (f t) = I vs t,
wenzelm
parents: 20716
diff changeset
   668
where f is supposed to be a computable function (in the sense of code
wenzelm
parents: 20716
diff changeset
   669
generattion). The method uses reify to compute s and xs as above then
wenzelm
parents: 20716
diff changeset
   670
applies corr_thm and uses normalization by evaluation to "prove" f s =
wenzelm
parents: 20716
diff changeset
   671
r and finally gets the theorem t = r, which is again applied to the
wenzelm
parents: 20716
diff changeset
   672
subgoal. An Example is available in HOL/ex/ReflectionEx.thy.
wenzelm
parents: 20716
diff changeset
   673
wenzelm
parents: 20716
diff changeset
   674
* Reflection: Automatic refification now handels binding, an example
wenzelm
parents: 20716
diff changeset
   675
is available in HOL/ex/ReflectionEx.thy
wenzelm
parents: 20716
diff changeset
   676
wenzelm
parents: 20716
diff changeset
   677
20169
52173f7687fd Change to algebra method.
ballarin
parents: 20136
diff changeset
   678
*** HOL-Algebra ***
52173f7687fd Change to algebra method.
ballarin
parents: 20136
diff changeset
   679
21170
wenzelm
parents: 21125
diff changeset
   680
* Formalisation of ideals and the quotient construction over rings.
wenzelm
parents: 21125
diff changeset
   681
wenzelm
parents: 21125
diff changeset
   682
* Order and lattice theory no longer based on records.
wenzelm
parents: 21125
diff changeset
   683
INCOMPATIBILITY.
wenzelm
parents: 21125
diff changeset
   684
wenzelm
parents: 21125
diff changeset
   685
* Method algebra is now set up via an attribute.  For examples see
wenzelm
parents: 21125
diff changeset
   686
CRing.thy.  INCOMPATIBILITY: the method is now weaker on combinations
wenzelm
parents: 21125
diff changeset
   687
of algebraic structures.
20318
0e0ea63fe768 Restructured algebra library, added ideals and quotient rings.
ballarin
parents: 20217
diff changeset
   688
0e0ea63fe768 Restructured algebra library, added ideals and quotient rings.
ballarin
parents: 20217
diff changeset
   689
* Renamed `CRing.thy' to `Ring.thy'.  INCOMPATIBILITY.
20169
52173f7687fd Change to algebra method.
ballarin
parents: 20136
diff changeset
   690
20807
wenzelm
parents: 20716
diff changeset
   691
19653
39c37e16f748 * Pure/library: divide_and_conquer;
wenzelm
parents: 19625
diff changeset
   692
*** HOL-Complex ***
39c37e16f748 * Pure/library: divide_and_conquer;
wenzelm
parents: 19625
diff changeset
   693
39c37e16f748 * Pure/library: divide_and_conquer;
wenzelm
parents: 19625
diff changeset
   694
* Theory Real: new method ferrack implements quantifier elimination
39c37e16f748 * Pure/library: divide_and_conquer;
wenzelm
parents: 19625
diff changeset
   695
for linear arithmetic over the reals. The quantifier elimination
39c37e16f748 * Pure/library: divide_and_conquer;
wenzelm
parents: 19625
diff changeset
   696
feature is used only for decision, for compatibility with arith. This
39c37e16f748 * Pure/library: divide_and_conquer;
wenzelm
parents: 19625
diff changeset
   697
means a goal is either solved or left unchanged, no simplification.
39c37e16f748 * Pure/library: divide_and_conquer;
wenzelm
parents: 19625
diff changeset
   698
39c37e16f748 * Pure/library: divide_and_conquer;
wenzelm
parents: 19625
diff changeset
   699
17878
wenzelm
parents: 17869
diff changeset
   700
*** ML ***
wenzelm
parents: 17869
diff changeset
   701
21056
2cfe839e8d58 Symtab.foldl replaced by Symtab.fold
haftmann
parents: 21041
diff changeset
   702
* Pure/table:
2cfe839e8d58 Symtab.foldl replaced by Symtab.fold
haftmann
parents: 21041
diff changeset
   703
2cfe839e8d58 Symtab.foldl replaced by Symtab.fold
haftmann
parents: 21041
diff changeset
   704
Function `...tab.foldl` removed.
2cfe839e8d58 Symtab.foldl replaced by Symtab.fold
haftmann
parents: 21041
diff changeset
   705
INCOMPATIBILITY: use `...tabfold` instead
2cfe839e8d58 Symtab.foldl replaced by Symtab.fold
haftmann
parents: 21041
diff changeset
   706
20857
7f6f26d8349b insert replacing ins ins_int ins_string
haftmann
parents: 20807
diff changeset
   707
* Pure/library:
7f6f26d8349b insert replacing ins ins_int ins_string
haftmann
parents: 20807
diff changeset
   708
21056
2cfe839e8d58 Symtab.foldl replaced by Symtab.fold
haftmann
parents: 21041
diff changeset
   709
`gen_rem(s)` abandoned in favour of `remove` / `subtract`.
20951
868120282837 gen_rem(s) abandoned in favour of remove / subtract
haftmann
parents: 20919
diff changeset
   710
INCOMPATIBILITY:
868120282837 gen_rem(s) abandoned in favour of remove / subtract
haftmann
parents: 20919
diff changeset
   711
rewrite "gen_rem eq (xs, x)" to "remove (eq o swap) x xs"
868120282837 gen_rem(s) abandoned in favour of remove / subtract
haftmann
parents: 20919
diff changeset
   712
rewrite "gen_rems eq (xs, ys)" to "subtract (eq o swap) ys xs"
868120282837 gen_rem(s) abandoned in favour of remove / subtract
haftmann
parents: 20919
diff changeset
   713
drop "swap" if "eq" is symmetric.
868120282837 gen_rem(s) abandoned in favour of remove / subtract
haftmann
parents: 20919
diff changeset
   714
868120282837 gen_rem(s) abandoned in favour of remove / subtract
haftmann
parents: 20919
diff changeset
   715
* Pure/library:
868120282837 gen_rem(s) abandoned in favour of remove / subtract
haftmann
parents: 20919
diff changeset
   716
21056
2cfe839e8d58 Symtab.foldl replaced by Symtab.fold
haftmann
parents: 21041
diff changeset
   717
infixes `ins` `ins_string` `ins_int` have been abandoned in favour of `insert`.
20857
7f6f26d8349b insert replacing ins ins_int ins_string
haftmann
parents: 20807
diff changeset
   718
INCOMPATIBILITY: rewrite "x ins(_...) xs" to "insert (op =) x xs"
7f6f26d8349b insert replacing ins ins_int ins_string
haftmann
parents: 20807
diff changeset
   719
20607
926a76a84e97 Operational Equality
haftmann
parents: 20582
diff changeset
   720
* Pure/General/susp.ML:
926a76a84e97 Operational Equality
haftmann
parents: 20582
diff changeset
   721
926a76a84e97 Operational Equality
haftmann
parents: 20582
diff changeset
   722
New module for delayed evaluations.
926a76a84e97 Operational Equality
haftmann
parents: 20582
diff changeset
   723
18450
e57731ba01dd discontinued unflat in favour of burrow and burrow_split
haftmann
parents: 18446
diff changeset
   724
* Pure/library:
e57731ba01dd discontinued unflat in favour of burrow and burrow_split
haftmann
parents: 18446
diff changeset
   725
20348
d59364649bcc abandoned equal_list in favor for eq_list
haftmann
parents: 20327
diff changeset
   726
Semantically identical functions "equal_list" and "eq_list" have been
d59364649bcc abandoned equal_list in favor for eq_list
haftmann
parents: 20327
diff changeset
   727
unified to "eq_list".
d59364649bcc abandoned equal_list in favor for eq_list
haftmann
parents: 20327
diff changeset
   728
d59364649bcc abandoned equal_list in favor for eq_list
haftmann
parents: 20327
diff changeset
   729
* Pure/library:
d59364649bcc abandoned equal_list in favor for eq_list
haftmann
parents: 20327
diff changeset
   730
18450
e57731ba01dd discontinued unflat in favour of burrow and burrow_split
haftmann
parents: 18446
diff changeset
   731
  val burrow: ('a list -> 'b list) -> 'a list list -> 'b list list
18549
5308a6ea3b96 rearranged burrow_split to fold_burrow to allow composition with fold_map
haftmann
parents: 18540
diff changeset
   732
  val fold_burrow: ('a list -> 'c -> 'b list * 'd) -> 'a list list -> 'c -> 'b list list * 'd
18450
e57731ba01dd discontinued unflat in favour of burrow and burrow_split
haftmann
parents: 18446
diff changeset
   733
18540
7b6f57406b1b * Pure/Isar: new command 'unfolding';
wenzelm
parents: 18536
diff changeset
   734
The semantics of "burrow" is: "take a function with *simulatanously*
7b6f57406b1b * Pure/Isar: new command 'unfolding';
wenzelm
parents: 18536
diff changeset
   735
transforms a list of value, and apply it *simulatanously* to a list of
7b6f57406b1b * Pure/Isar: new command 'unfolding';
wenzelm
parents: 18536
diff changeset
   736
list of values of the appropriate type". Confer this with "map" which
7b6f57406b1b * Pure/Isar: new command 'unfolding';
wenzelm
parents: 18536
diff changeset
   737
would *not* apply its argument function simulatanously but in
18549
5308a6ea3b96 rearranged burrow_split to fold_burrow to allow composition with fold_map
haftmann
parents: 18540
diff changeset
   738
sequence. "fold_burrow" has an additional context.
18540
7b6f57406b1b * Pure/Isar: new command 'unfolding';
wenzelm
parents: 18536
diff changeset
   739
7b6f57406b1b * Pure/Isar: new command 'unfolding';
wenzelm
parents: 18536
diff changeset
   740
Both actually avoid the usage of "unflat" since they hide away
7b6f57406b1b * Pure/Isar: new command 'unfolding';
wenzelm
parents: 18536
diff changeset
   741
"unflat" from the user.
18450
e57731ba01dd discontinued unflat in favour of burrow and burrow_split
haftmann
parents: 18446
diff changeset
   742
18446
wenzelm
parents: 18422
diff changeset
   743
* Pure/library: functions map2 and fold2 with curried syntax for
wenzelm
parents: 18422
diff changeset
   744
simultanous mapping and folding:
wenzelm
parents: 18422
diff changeset
   745
18422
875451c9d253 re-arranged tuples (theory * 'a) to ('a * theory) in Pure
haftmann
parents: 18399
diff changeset
   746
    val map2: ('a -> 'b -> 'c) -> 'a list -> 'b list -> 'c list
875451c9d253 re-arranged tuples (theory * 'a) to ('a * theory) in Pure
haftmann
parents: 18399
diff changeset
   747
    val fold2: ('a -> 'b -> 'c -> 'c) -> 'a list -> 'b list -> 'c -> 'c
875451c9d253 re-arranged tuples (theory * 'a) to ('a * theory) in Pure
haftmann
parents: 18399
diff changeset
   748
18446
wenzelm
parents: 18422
diff changeset
   749
* Pure/library: indexed lists - some functions in the Isabelle library
wenzelm
parents: 18422
diff changeset
   750
treating lists over 'a as finite mappings from [0...n] to 'a have been
wenzelm
parents: 18422
diff changeset
   751
given more convenient names and signatures reminiscent of similar
wenzelm
parents: 18422
diff changeset
   752
functions for alists, tables, etc:
18051
dba086ed50cb nth_*, fold_index refined
haftmann
parents: 18044
diff changeset
   753
dba086ed50cb nth_*, fold_index refined
haftmann
parents: 18044
diff changeset
   754
  val nth: 'a list -> int -> 'a 
dba086ed50cb nth_*, fold_index refined
haftmann
parents: 18044
diff changeset
   755
  val nth_map: int -> ('a -> 'a) -> 'a list -> 'a list
dba086ed50cb nth_*, fold_index refined
haftmann
parents: 18044
diff changeset
   756
  val fold_index: (int * 'a -> 'b -> 'b) -> 'a list -> 'b -> 'b
dba086ed50cb nth_*, fold_index refined
haftmann
parents: 18044
diff changeset
   757
18446
wenzelm
parents: 18422
diff changeset
   758
Note that fold_index starts counting at index 0, not 1 like foldln
wenzelm
parents: 18422
diff changeset
   759
used to.
wenzelm
parents: 18422
diff changeset
   760
19653
39c37e16f748 * Pure/library: divide_and_conquer;
wenzelm
parents: 19625
diff changeset
   761
* Pure/library: general ``divide_and_conquer'' combinator on lists.
39c37e16f748 * Pure/library: divide_and_conquer;
wenzelm
parents: 19625
diff changeset
   762
19032
wenzelm
parents: 19006
diff changeset
   763
* Pure/General/name_mangler.ML provides a functor for generic name
21109
f8f89be75e81 dropped nth_update
haftmann
parents: 21099
diff changeset
   764
mangling (bijective mapping from expression values to strings).
18446
wenzelm
parents: 18422
diff changeset
   765
19032
wenzelm
parents: 19006
diff changeset
   766
* Pure/General/rat.ML implements rational numbers.
wenzelm
parents: 19006
diff changeset
   767
wenzelm
parents: 19006
diff changeset
   768
* Pure/General/table.ML: the join operations now works via exceptions
19081
085b5badb8de * Isar/locales: new derived specification elements 'definition', 'abbreviation', 'axiomatization';
wenzelm
parents: 19034
diff changeset
   769
DUP/SAME instead of type option.  This is simpler in simple cases, and
085b5badb8de * Isar/locales: new derived specification elements 'definition', 'abbreviation', 'axiomatization';
wenzelm
parents: 19034
diff changeset
   770
admits slightly more efficient complex applications.
18446
wenzelm
parents: 18422
diff changeset
   771
18642
6954633b6a76 * ML: generic context, data, attributes;
wenzelm
parents: 18601
diff changeset
   772
* Pure: datatype Context.generic joins theory/Proof.context and
18644
wenzelm
parents: 18642
diff changeset
   773
provides some facilities for code that works in either kind of
18642
6954633b6a76 * ML: generic context, data, attributes;
wenzelm
parents: 18601
diff changeset
   774
context, notably GenericDataFun for uniform theory and proof data.
6954633b6a76 * ML: generic context, data, attributes;
wenzelm
parents: 18601
diff changeset
   775
18862
bd83590be0f7 * Pure: 'advanced' translation functions use Context.generic instead of just theory;
wenzelm
parents: 18815
diff changeset
   776
* Pure: 'advanced' translation functions (parse_translation etc.) now
bd83590be0f7 * Pure: 'advanced' translation functions use Context.generic instead of just theory;
wenzelm
parents: 18815
diff changeset
   777
use Context.generic instead of just theory.
bd83590be0f7 * Pure: 'advanced' translation functions use Context.generic instead of just theory;
wenzelm
parents: 18815
diff changeset
   778
18737
78d6ae887f6e * ML: simplified type attribute;
wenzelm
parents: 18722
diff changeset
   779
* Pure: simplified internal attribute type, which is now always
78d6ae887f6e * ML: simplified type attribute;
wenzelm
parents: 18722
diff changeset
   780
Context.generic * thm -> Context.generic * thm.  Global (theory)
78d6ae887f6e * ML: simplified type attribute;
wenzelm
parents: 18722
diff changeset
   781
vs. local (Proof.context) attributes have been discontinued, while
18738
wenzelm
parents: 18737
diff changeset
   782
minimizing code duplication.  Thm.rule_attribute and
wenzelm
parents: 18737
diff changeset
   783
Thm.declaration_attribute build canonical attributes; see also
19006
2427684c201c * ML/Pure: generic Args/Attrib syntax everywhere;
wenzelm
parents: 18979
diff changeset
   784
structure Context for further operations on Context.generic, notably
2427684c201c * ML/Pure: generic Args/Attrib syntax everywhere;
wenzelm
parents: 18979
diff changeset
   785
GenericDataFun.  INCOMPATIBILITY, need to adapt attribute type
2427684c201c * ML/Pure: generic Args/Attrib syntax everywhere;
wenzelm
parents: 18979
diff changeset
   786
declarations and definitions.
2427684c201c * ML/Pure: generic Args/Attrib syntax everywhere;
wenzelm
parents: 18979
diff changeset
   787
19508
d5236f5b0a71 * Pure: axclasses now purely definitional;
wenzelm
parents: 19377
diff changeset
   788
* Pure/kernel: consts certification ignores sort constraints given in
d5236f5b0a71 * Pure: axclasses now purely definitional;
wenzelm
parents: 19377
diff changeset
   789
signature declarations.  (This information is not relevant to the
d5236f5b0a71 * Pure: axclasses now purely definitional;
wenzelm
parents: 19377
diff changeset
   790
logic, but only for type inference.)  IMPORTANT INTERNAL CHANGE.
d5236f5b0a71 * Pure: axclasses now purely definitional;
wenzelm
parents: 19377
diff changeset
   791
d5236f5b0a71 * Pure: axclasses now purely definitional;
wenzelm
parents: 19377
diff changeset
   792
* Pure: axiomatic type classes are now purely definitional, with
d5236f5b0a71 * Pure: axclasses now purely definitional;
wenzelm
parents: 19377
diff changeset
   793
explicit proofs of class axioms and super class relations performed
d5236f5b0a71 * Pure: axclasses now purely definitional;
wenzelm
parents: 19377
diff changeset
   794
internally.  See Pure/axclass.ML for the main internal interfaces --
d5236f5b0a71 * Pure: axclasses now purely definitional;
wenzelm
parents: 19377
diff changeset
   795
notably AxClass.define_class supercedes AxClass.add_axclass, and
d5236f5b0a71 * Pure: axclasses now purely definitional;
wenzelm
parents: 19377
diff changeset
   796
AxClass.axiomatize_class/classrel/arity supercede
d5236f5b0a71 * Pure: axclasses now purely definitional;
wenzelm
parents: 19377
diff changeset
   797
Sign.add_classes/classrel/arities.
d5236f5b0a71 * Pure: axclasses now purely definitional;
wenzelm
parents: 19377
diff changeset
   798
19006
2427684c201c * ML/Pure: generic Args/Attrib syntax everywhere;
wenzelm
parents: 18979
diff changeset
   799
* Pure/Isar: Args/Attrib parsers operate on Context.generic --
2427684c201c * ML/Pure: generic Args/Attrib syntax everywhere;
wenzelm
parents: 18979
diff changeset
   800
global/local versions on theory vs. Proof.context have been
2427684c201c * ML/Pure: generic Args/Attrib syntax everywhere;
wenzelm
parents: 18979
diff changeset
   801
discontinued; Attrib.syntax and Method.syntax have been adapted
2427684c201c * ML/Pure: generic Args/Attrib syntax everywhere;
wenzelm
parents: 18979
diff changeset
   802
accordingly.  INCOMPATIBILITY, need to adapt parser expressions for
2427684c201c * ML/Pure: generic Args/Attrib syntax everywhere;
wenzelm
parents: 18979
diff changeset
   803
attributes, methods, etc.
18642
6954633b6a76 * ML: generic context, data, attributes;
wenzelm
parents: 18601
diff changeset
   804
18446
wenzelm
parents: 18422
diff changeset
   805
* Pure: several functions of signature "... -> theory -> theory * ..."
wenzelm
parents: 18422
diff changeset
   806
have been reoriented to "... -> theory -> ... * theory" in order to
wenzelm
parents: 18422
diff changeset
   807
allow natural usage in combination with the ||>, ||>>, |-> and
wenzelm
parents: 18422
diff changeset
   808
fold_map combinators.
18051
dba086ed50cb nth_*, fold_index refined
haftmann
parents: 18044
diff changeset
   809
18020
d23a846598d2 * Pure/Isar: literal facts;
wenzelm
parents: 17996
diff changeset
   810
* Pure: primitive rule lift_rule now takes goal cterm instead of an
18145
6757627acf59 renamed Thm.cgoal_of to Thm.cprem_of;
wenzelm
parents: 18051
diff changeset
   811
actual goal state (thm).  Use Thm.lift_rule (Thm.cprem_of st i) to
18020
d23a846598d2 * Pure/Isar: literal facts;
wenzelm
parents: 17996
diff changeset
   812
achieve the old behaviour.
d23a846598d2 * Pure/Isar: literal facts;
wenzelm
parents: 17996
diff changeset
   813
d23a846598d2 * Pure/Isar: literal facts;
wenzelm
parents: 17996
diff changeset
   814
* Pure: the "Goal" constant is now called "prop", supporting a
d23a846598d2 * Pure/Isar: literal facts;
wenzelm
parents: 17996
diff changeset
   815
slightly more general idea of ``protecting'' meta-level rule
d23a846598d2 * Pure/Isar: literal facts;
wenzelm
parents: 17996
diff changeset
   816
statements.
d23a846598d2 * Pure/Isar: literal facts;
wenzelm
parents: 17996
diff changeset
   817
20040
02c59ec2f2e1 * Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents: 20013
diff changeset
   818
* Pure: Logic.(un)varify only works in a global context, which is now
02c59ec2f2e1 * Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents: 20013
diff changeset
   819
enforced instead of silently assumed.  INCOMPATIBILITY, may use
02c59ec2f2e1 * Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents: 20013
diff changeset
   820
Logic.legacy_(un)varify as temporary workaround.
02c59ec2f2e1 * Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents: 20013
diff changeset
   821
20090
5cf221f2a55d * Pure: structure Name;
wenzelm
parents: 20067
diff changeset
   822
* Pure: structure Name provides scalable operations for generating
5cf221f2a55d * Pure: structure Name;
wenzelm
parents: 20067
diff changeset
   823
internal variable names, notably Name.variants etc.  This replaces
5cf221f2a55d * Pure: structure Name;
wenzelm
parents: 20067
diff changeset
   824
some popular functions from term.ML:
5cf221f2a55d * Pure: structure Name;
wenzelm
parents: 20067
diff changeset
   825
5cf221f2a55d * Pure: structure Name;
wenzelm
parents: 20067
diff changeset
   826
  Term.variant		->  Name.variant
5cf221f2a55d * Pure: structure Name;
wenzelm
parents: 20067
diff changeset
   827
  Term.variantlist	->  Name.variant_list  (*canonical argument order*)
5cf221f2a55d * Pure: structure Name;
wenzelm
parents: 20067
diff changeset
   828
  Term.invent_names	->  Name.invent_list
5cf221f2a55d * Pure: structure Name;
wenzelm
parents: 20067
diff changeset
   829
5cf221f2a55d * Pure: structure Name;
wenzelm
parents: 20067
diff changeset
   830
Note that low-level renaming rarely occurs in new code -- operations
5cf221f2a55d * Pure: structure Name;
wenzelm
parents: 20067
diff changeset
   831
from structure Variable are used instead (see below).
5cf221f2a55d * Pure: structure Name;
wenzelm
parents: 20067
diff changeset
   832
20040
02c59ec2f2e1 * Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents: 20013
diff changeset
   833
* Pure: structure Variable provides fundamental operations for proper
02c59ec2f2e1 * Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents: 20013
diff changeset
   834
treatment of fixed/schematic variables in a context.  For example,
02c59ec2f2e1 * Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents: 20013
diff changeset
   835
Variable.import introduces fixes for schematics of given facts and
02c59ec2f2e1 * Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents: 20013
diff changeset
   836
Variable.export reverses the effect (up to renaming) -- this replaces
02c59ec2f2e1 * Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents: 20013
diff changeset
   837
various freeze_thaw operations.
02c59ec2f2e1 * Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents: 20013
diff changeset
   838
18567
ecdd71518f33 * Pure/Isar: Toplevel.theory_theory_to_proof;
wenzelm
parents: 18557
diff changeset
   839
* Pure: structure Goal provides simple interfaces for
17981
2602be0d99ae * Legacy goal package: reduced interface to the bare minimum required to keep existing proof scripts running.
wenzelm
parents: 17918
diff changeset
   840
init/conclude/finish and tactical prove operations (replacing former
20040
02c59ec2f2e1 * Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents: 20013
diff changeset
   841
Tactic.prove).  Goal.prove is the canonical way to prove results
02c59ec2f2e1 * Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents: 20013
diff changeset
   842
within a given context; Goal.prove_global is a degraded version for
02c59ec2f2e1 * Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents: 20013
diff changeset
   843
theory level goals, including a global Drule.standard.  Note that
02c59ec2f2e1 * Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents: 20013
diff changeset
   844
OldGoals.prove_goalw_cterm has long been obsolete, since it is
02c59ec2f2e1 * Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents: 20013
diff changeset
   845
ill-behaved in a local proof context (e.g. with local fixes/assumes or
02c59ec2f2e1 * Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents: 20013
diff changeset
   846
in a locale context).
17981
2602be0d99ae * Legacy goal package: reduced interface to the bare minimum required to keep existing proof scripts running.
wenzelm
parents: 17918
diff changeset
   847
18815
cb778c0ce1b5 Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents: 18738
diff changeset
   848
* Isar: simplified treatment of user-level errors, using exception
18687
wenzelm
parents: 18686
diff changeset
   849
ERROR of string uniformly.  Function error now merely raises ERROR,
18686
cbbc71acf994 * ML/Isar: simplified treatment of user-level errors;
wenzelm
parents: 18674
diff changeset
   850
without any side effect on output channels.  The Isar toplevel takes
cbbc71acf994 * ML/Isar: simplified treatment of user-level errors;
wenzelm
parents: 18674
diff changeset
   851
care of proper display of ERROR exceptions.  ML code may use plain
cbbc71acf994 * ML/Isar: simplified treatment of user-level errors;
wenzelm
parents: 18674
diff changeset
   852
handle/can/try; cat_error may be used to concatenate errors like this:
cbbc71acf994 * ML/Isar: simplified treatment of user-level errors;
wenzelm
parents: 18674
diff changeset
   853
cbbc71acf994 * ML/Isar: simplified treatment of user-level errors;
wenzelm
parents: 18674
diff changeset
   854
  ... handle ERROR msg => cat_error msg "..."
cbbc71acf994 * ML/Isar: simplified treatment of user-level errors;
wenzelm
parents: 18674
diff changeset
   855
cbbc71acf994 * ML/Isar: simplified treatment of user-level errors;
wenzelm
parents: 18674
diff changeset
   856
Toplevel ML code (run directly or through the Isar toplevel) may be
18687
wenzelm
parents: 18686
diff changeset
   857
embedded into the Isar toplevel with exception display/debug like
wenzelm
parents: 18686
diff changeset
   858
this:
18686
cbbc71acf994 * ML/Isar: simplified treatment of user-level errors;
wenzelm
parents: 18674
diff changeset
   859
cbbc71acf994 * ML/Isar: simplified treatment of user-level errors;
wenzelm
parents: 18674
diff changeset
   860
  Isar.toplevel (fn () => ...)
cbbc71acf994 * ML/Isar: simplified treatment of user-level errors;
wenzelm
parents: 18674
diff changeset
   861
cbbc71acf994 * ML/Isar: simplified treatment of user-level errors;
wenzelm
parents: 18674
diff changeset
   862
INCOMPATIBILITY, removed special transform_error facilities, removed
cbbc71acf994 * ML/Isar: simplified treatment of user-level errors;
wenzelm
parents: 18674
diff changeset
   863
obsolete variants of user-level exceptions (ERROR_MESSAGE,
cbbc71acf994 * ML/Isar: simplified treatment of user-level errors;
wenzelm
parents: 18674
diff changeset
   864
Context.PROOF, ProofContext.CONTEXT, Proof.STATE, ProofHistory.FAIL)
cbbc71acf994 * ML/Isar: simplified treatment of user-level errors;
wenzelm
parents: 18674
diff changeset
   865
-- use plain ERROR instead.
cbbc71acf994 * ML/Isar: simplified treatment of user-level errors;
wenzelm
parents: 18674
diff changeset
   866
18815
cb778c0ce1b5 Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents: 18738
diff changeset
   867
* Isar: theory setup now has type (theory -> theory), instead of a
18722
0888eca0f1be * ML/Isar: theory setup has type (theory -> theory);
wenzelm
parents: 18696
diff changeset
   868
list.  INCOMPATIBILITY, may use #> to compose setup functions.
0888eca0f1be * ML/Isar: theory setup has type (theory -> theory);
wenzelm
parents: 18696
diff changeset
   869
18815
cb778c0ce1b5 Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents: 18738
diff changeset
   870
* Isar: installed ML toplevel pretty printer for type Proof.context,
cb778c0ce1b5 Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents: 18738
diff changeset
   871
subject to ProofContext.debug/verbose flags.
cb778c0ce1b5 Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents: 18738
diff changeset
   872
cb778c0ce1b5 Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents: 18738
diff changeset
   873
* Isar: Toplevel.theory_to_proof admits transactions that modify the
cb778c0ce1b5 Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents: 18738
diff changeset
   874
theory before entering a proof state.  Transactions now always see a
cb778c0ce1b5 Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents: 18738
diff changeset
   875
quasi-functional intermediate checkpoint, both in interactive and
18590
f6a553aa3d81 Pure/Isar: Toplevel.theory_to_proof admits transactions that modify the theory;
wenzelm
parents: 18568
diff changeset
   876
batch mode.
18567
ecdd71518f33 * Pure/Isar: Toplevel.theory_theory_to_proof;
wenzelm
parents: 18557
diff changeset
   877
17878
wenzelm
parents: 17869
diff changeset
   878
* Simplifier: the simpset of a running simplification process now
wenzelm
parents: 17869
diff changeset
   879
contains a proof context (cf. Simplifier.the_context), which is the
wenzelm
parents: 17869
diff changeset
   880
very context that the initial simpset has been retrieved from (by
17890
fddb41d3cfa5 Simplifier.context/theory_context;
wenzelm
parents: 17887
diff changeset
   881
simpset_of/local_simpset_of).  Consequently, all plug-in components
17878
wenzelm
parents: 17869
diff changeset
   882
(solver, looper etc.) may depend on arbitrary proof data.
wenzelm
parents: 17869
diff changeset
   883
wenzelm
parents: 17869
diff changeset
   884
* Simplifier.inherit_context inherits the proof context (plus the
wenzelm
parents: 17869
diff changeset
   885
local bounds) of the current simplification process; any simproc
wenzelm
parents: 17869
diff changeset
   886
etc. that calls the Simplifier recursively should do this!  Removed
wenzelm
parents: 17869
diff changeset
   887
former Simplifier.inherit_bounds, which is already included here --
17890
fddb41d3cfa5 Simplifier.context/theory_context;
wenzelm
parents: 17887
diff changeset
   888
INCOMPATIBILITY.  Tools based on low-level rewriting may even have to
fddb41d3cfa5 Simplifier.context/theory_context;
wenzelm
parents: 17887
diff changeset
   889
specify an explicit context using Simplifier.context/theory_context.
17878
wenzelm
parents: 17869
diff changeset
   890
wenzelm
parents: 17869
diff changeset
   891
* Simplifier/Classical Reasoner: more abstract interfaces
wenzelm
parents: 17869
diff changeset
   892
change_simpset/claset for modifying the simpset/claset reference of a
wenzelm
parents: 17869
diff changeset
   893
theory; raw versions simpset/claset_ref etc. have been discontinued --
wenzelm
parents: 17869
diff changeset
   894
INCOMPATIBILITY.
wenzelm
parents: 17869
diff changeset
   895
18540
7b6f57406b1b * Pure/Isar: new command 'unfolding';
wenzelm
parents: 18536
diff changeset
   896
* Provers: more generic wrt. syntax of object-logics, avoid hardwired
7b6f57406b1b * Pure/Isar: new command 'unfolding';
wenzelm
parents: 18536
diff changeset
   897
"Trueprop" etc.
7b6f57406b1b * Pure/Isar: new command 'unfolding';
wenzelm
parents: 18536
diff changeset
   898
17878
wenzelm
parents: 17869
diff changeset
   899
20988
0887d0dd3210 * isabelle-process: option -S (secure mode) disables some critical operations;
wenzelm
parents: 20951
diff changeset
   900
*** System ***
0887d0dd3210 * isabelle-process: option -S (secure mode) disables some critical operations;
wenzelm
parents: 20951
diff changeset
   901
0887d0dd3210 * isabelle-process: option -S (secure mode) disables some critical operations;
wenzelm
parents: 20951
diff changeset
   902
* isabelle-process: option -S (secure mode) disables some critical
0887d0dd3210 * isabelle-process: option -S (secure mode) disables some critical operations;
wenzelm
parents: 20951
diff changeset
   903
operations, notably runtime compilation and evaluation of ML source
0887d0dd3210 * isabelle-process: option -S (secure mode) disables some critical operations;
wenzelm
parents: 20951
diff changeset
   904
code.
0887d0dd3210 * isabelle-process: option -S (secure mode) disables some critical operations;
wenzelm
parents: 20951
diff changeset
   905
17754
58a306d9f736 * Command 'find_theorems': support * wildcard in name: criterion.
wenzelm
parents: 17725
diff changeset
   906
17720
da9199e6b674 Isabelle2005 (October 2005);
wenzelm
parents: 17701
diff changeset
   907
New in Isabelle2005 (October 2005)
da9199e6b674 Isabelle2005 (October 2005);
wenzelm
parents: 17701
diff changeset
   908
----------------------------------
14655
8a95abf87dd3 Pure: considerably improved version of 'constdefs' command;
wenzelm
parents: 14624
diff changeset
   909
8a95abf87dd3 Pure: considerably improved version of 'constdefs' command;
wenzelm
parents: 14624
diff changeset
   910
*** General ***
8a95abf87dd3 Pure: considerably improved version of 'constdefs' command;
wenzelm
parents: 14624
diff changeset
   911
15130
dc6be28d7f4e *** empty log message ***
nipkow
parents: 15127
diff changeset
   912
* Theory headers: the new header syntax for Isar theories is
dc6be28d7f4e *** empty log message ***
nipkow
parents: 15127
diff changeset
   913
dc6be28d7f4e *** empty log message ***
nipkow
parents: 15127
diff changeset
   914
  theory <name>
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
   915
  imports <theory1> ... <theoryN>
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
   916
  uses <file1> ... <fileM>
15130
dc6be28d7f4e *** empty log message ***
nipkow
parents: 15127
diff changeset
   917
  begin
dc6be28d7f4e *** empty log message ***
nipkow
parents: 15127
diff changeset
   918
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
   919
where the 'uses' part is optional.  The previous syntax
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
   920
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
   921
  theory <name> = <theory1> + ... + <theoryN>:
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
   922
16717
710a7a7a2b65 isatool fixheaders;
wenzelm
parents: 16690
diff changeset
   923
will disappear in the next release.  Use isatool fixheaders to convert
710a7a7a2b65 isatool fixheaders;
wenzelm
parents: 16690
diff changeset
   924
existing theory files.  Note that there is no change in ancient
17371
wenzelm
parents: 17275
diff changeset
   925
non-Isar theories now, but these will disappear soon.
15130
dc6be28d7f4e *** empty log message ***
nipkow
parents: 15127
diff changeset
   926
15475
fdf9434b04ea - Proofs are now hidden by default when generating documents
berghofe
parents: 15454
diff changeset
   927
* Theory loader: parent theories can now also be referred to via
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
   928
relative and absolute paths.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
   929
17408
551c9a4dd693 command 'thms_containing' has been discontinued in favour of 'find_theorems';
wenzelm
parents: 17402
diff changeset
   930
* Command 'find_theorems' searches for a list of criteria instead of a
551c9a4dd693 command 'thms_containing' has been discontinued in favour of 'find_theorems';
wenzelm
parents: 17402
diff changeset
   931
list of constants. Known criteria are: intro, elim, dest, name:string,
551c9a4dd693 command 'thms_containing' has been discontinued in favour of 'find_theorems';
wenzelm
parents: 17402
diff changeset
   932
simp:term, and any term. Criteria can be preceded by '-' to select
551c9a4dd693 command 'thms_containing' has been discontinued in favour of 'find_theorems';
wenzelm
parents: 17402
diff changeset
   933
theorems that do not match. Intro, elim, dest select theorems that
551c9a4dd693 command 'thms_containing' has been discontinued in favour of 'find_theorems';
wenzelm
parents: 17402
diff changeset
   934
match the current goal, name:s selects theorems whose fully qualified
551c9a4dd693 command 'thms_containing' has been discontinued in favour of 'find_theorems';
wenzelm
parents: 17402
diff changeset
   935
name contain s, and simp:term selects all simplification rules whose
551c9a4dd693 command 'thms_containing' has been discontinued in favour of 'find_theorems';
wenzelm
parents: 17402
diff changeset
   936
lhs match term.  Any other term is interpreted as pattern and selects
551c9a4dd693 command 'thms_containing' has been discontinued in favour of 'find_theorems';
wenzelm
parents: 17402
diff changeset
   937
all theorems matching the pattern. Available in ProofGeneral under
551c9a4dd693 command 'thms_containing' has been discontinued in favour of 'find_theorems';
wenzelm
parents: 17402
diff changeset
   938
'ProofGeneral -> Find Theorems' or C-c C-f.  Example:
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
   939
17275
44d8fbc2e52d axclass: name space prefix is now "c_class" instead of just "c";
wenzelm
parents: 17269
diff changeset
   940
  C-c C-f (100) "(_::nat) + _ + _" intro -name: "HOL."
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
   941
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
   942
prints the last 100 theorems matching the pattern "(_::nat) + _ + _",
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
   943
matching the current goal as introduction rule and not having "HOL."
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
   944
in their name (i.e. not being defined in theory HOL).
16013
3010430d894d removed find_rewrites (superceded by improved thms_containing);
wenzelm
parents: 16000
diff changeset
   945
17408
551c9a4dd693 command 'thms_containing' has been discontinued in favour of 'find_theorems';
wenzelm
parents: 17402
diff changeset
   946
* Command 'thms_containing' has been discontinued in favour of
551c9a4dd693 command 'thms_containing' has been discontinued in favour of 'find_theorems';
wenzelm
parents: 17402
diff changeset
   947
'find_theorems'; INCOMPATIBILITY.
551c9a4dd693 command 'thms_containing' has been discontinued in favour of 'find_theorems';
wenzelm
parents: 17402
diff changeset
   948
17385
4dcae6e62268 HOL: method comm_ring;
wenzelm
parents: 17371
diff changeset
   949
* Communication with Proof General is now 8bit clean, which means that
4dcae6e62268 HOL: method comm_ring;
wenzelm
parents: 17371
diff changeset
   950
Unicode text in UTF-8 encoding may be used within theory texts (both
17408
551c9a4dd693 command 'thms_containing' has been discontinued in favour of 'find_theorems';
wenzelm
parents: 17402
diff changeset
   951
formal and informal parts).  Cf. option -U of the Isabelle Proof
17538
wenzelm
parents: 17535
diff changeset
   952
General interface.  Here are some simple examples (cf. src/HOL/ex):
wenzelm
parents: 17535
diff changeset
   953
wenzelm
parents: 17535
diff changeset
   954
  http://isabelle.in.tum.de/library/HOL/ex/Hebrew.html
wenzelm
parents: 17535
diff changeset
   955
  http://isabelle.in.tum.de/library/HOL/ex/Chinese.html
17385
4dcae6e62268 HOL: method comm_ring;
wenzelm
parents: 17371
diff changeset
   956
17425
67c84a7d29f7 * Improved efficiency of the Simplifier etc.;
wenzelm
parents: 17423
diff changeset
   957
* Improved efficiency of the Simplifier and, to a lesser degree, the
67c84a7d29f7 * Improved efficiency of the Simplifier etc.;
wenzelm
parents: 17423
diff changeset
   958
Classical Reasoner.  Typical big applications run around 2 times
67c84a7d29f7 * Improved efficiency of the Simplifier etc.;
wenzelm
parents: 17423
diff changeset
   959
faster.
67c84a7d29f7 * Improved efficiency of the Simplifier etc.;
wenzelm
parents: 17423
diff changeset
   960
15703
727ef1b8b3ee *** empty log message ***
wenzelm
parents: 15696
diff changeset
   961
727ef1b8b3ee *** empty log message ***
wenzelm
parents: 15696
diff changeset
   962
*** Document preparation ***
727ef1b8b3ee *** empty log message ***
wenzelm
parents: 15696
diff changeset
   963
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
   964
* Commands 'display_drafts' and 'print_drafts' perform simple output
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
   965
of raw sources.  Only those symbols that do not require additional
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
   966
LaTeX packages (depending on comments in isabellesym.sty) are
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
   967
displayed properly, everything else is left verbatim.  isatool display
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
   968
and isatool print are used as front ends (these are subject to the
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
   969
DVI/PDF_VIEWER and PRINT_COMMAND settings, respectively).
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
   970
17047
e2e2d75bb37b * Command tags control specific markup of certain regions of text (replaces usedir -H);
wenzelm
parents: 17016
diff changeset
   971
* Command tags control specific markup of certain regions of text,
e2e2d75bb37b * Command tags control specific markup of certain regions of text (replaces usedir -H);
wenzelm
parents: 17016
diff changeset
   972
notably folding and hiding.  Predefined tags include "theory" (for
e2e2d75bb37b * Command tags control specific markup of certain regions of text (replaces usedir -H);
wenzelm
parents: 17016
diff changeset
   973
theory begin and end), "proof" for proof commands, and "ML" for
e2e2d75bb37b * Command tags control specific markup of certain regions of text (replaces usedir -H);
wenzelm
parents: 17016
diff changeset
   974
commands involving ML code; the additional tags "visible" and
e2e2d75bb37b * Command tags control specific markup of certain regions of text (replaces usedir -H);
wenzelm
parents: 17016
diff changeset
   975
"invisible" are unused by default.  Users may give explicit tag
e2e2d75bb37b * Command tags control specific markup of certain regions of text (replaces usedir -H);
wenzelm
parents: 17016
diff changeset
   976
specifications in the text, e.g. ''by %invisible (auto)''.  The
e2e2d75bb37b * Command tags control specific markup of certain regions of text (replaces usedir -H);
wenzelm
parents: 17016
diff changeset
   977
interpretation of tags is determined by the LaTeX job during document
e2e2d75bb37b * Command tags control specific markup of certain regions of text (replaces usedir -H);
wenzelm
parents: 17016
diff changeset
   978
preparation: see option -V of isatool usedir, or options -n and -t of
e2e2d75bb37b * Command tags control specific markup of certain regions of text (replaces usedir -H);
wenzelm
parents: 17016
diff changeset
   979
isatool document, or even the LaTeX macros \isakeeptag, \isafoldtag,
e2e2d75bb37b * Command tags control specific markup of certain regions of text (replaces usedir -H);
wenzelm
parents: 17016
diff changeset
   980
\isadroptag.
e2e2d75bb37b * Command tags control specific markup of certain regions of text (replaces usedir -H);
wenzelm
parents: 17016
diff changeset
   981
e2e2d75bb37b * Command tags control specific markup of certain regions of text (replaces usedir -H);
wenzelm
parents: 17016
diff changeset
   982
Several document versions may be produced at the same time via isatool
e2e2d75bb37b * Command tags control specific markup of certain regions of text (replaces usedir -H);
wenzelm
parents: 17016
diff changeset
   983
usedir (the generated index.html will link all of them).  Typical
e2e2d75bb37b * Command tags control specific markup of certain regions of text (replaces usedir -H);
wenzelm
parents: 17016
diff changeset
   984
specifications include ''-V document=theory,proof,ML'' to present
e2e2d75bb37b * Command tags control specific markup of certain regions of text (replaces usedir -H);
wenzelm
parents: 17016
diff changeset
   985
theory/proof/ML parts faithfully, ''-V outline=/proof,/ML'' to fold
e2e2d75bb37b * Command tags control specific markup of certain regions of text (replaces usedir -H);
wenzelm
parents: 17016
diff changeset
   986
proof and ML commands, and ''-V mutilated=-theory,-proof,-ML'' to omit
e2e2d75bb37b * Command tags control specific markup of certain regions of text (replaces usedir -H);
wenzelm
parents: 17016
diff changeset
   987
these parts without any formal replacement text.  The Isabelle site
e2e2d75bb37b * Command tags control specific markup of certain regions of text (replaces usedir -H);
wenzelm
parents: 17016
diff changeset
   988
default settings produce ''document'' and ''outline'' versions as
e2e2d75bb37b * Command tags control specific markup of certain regions of text (replaces usedir -H);
wenzelm
parents: 17016
diff changeset
   989
specified above.
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
   990
17402
41f1249bce37 AList, the_*
haftmann
parents: 17398
diff changeset
   991
* Several new antiquotations:
15979
wenzelm
parents: 15973
diff changeset
   992
wenzelm
parents: 15973
diff changeset
   993
  @{term_type term} prints a term with its type annotated;
wenzelm
parents: 15973
diff changeset
   994
wenzelm
parents: 15973
diff changeset
   995
  @{typeof term} prints the type of a term;
wenzelm
parents: 15973
diff changeset
   996
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
   997
  @{const const} is the same as @{term const}, but checks that the
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
   998
  argument is a known logical constant;
15979
wenzelm
parents: 15973
diff changeset
   999
wenzelm
parents: 15973
diff changeset
  1000
  @{term_style style term} and @{thm_style style thm} print a term or
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1001
  theorem applying a "style" to it
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1002
17117
e2bed9e82454 * The ML antiquotation prints type-checked ML expressions verbatim.
wenzelm
parents: 17097
diff changeset
  1003
  @{ML text}
e2bed9e82454 * The ML antiquotation prints type-checked ML expressions verbatim.
wenzelm
parents: 17097
diff changeset
  1004
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1005
Predefined styles are 'lhs' and 'rhs' printing the lhs/rhs of
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1006
definitions, equations, inequations etc., 'concl' printing only the
17393
23b7e14ce640 ... prem19
schirmer
parents: 17389
diff changeset
  1007
conclusion of a meta-logical statement theorem, and 'prem1' .. 'prem19'
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1008
to print the specified premise.  TermStyle.add_style provides an ML
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1009
interface for introducing further styles.  See also the "LaTeX Sugar"
17117
e2bed9e82454 * The ML antiquotation prints type-checked ML expressions verbatim.
wenzelm
parents: 17097
diff changeset
  1010
document practical applications.  The ML antiquotation prints
e2bed9e82454 * The ML antiquotation prints type-checked ML expressions verbatim.
wenzelm
parents: 17097
diff changeset
  1011
type-checked ML expressions verbatim.
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1012
17259
dda237f1d299 Markup commands 'chapter' .. 'text' support optional locale specification;
wenzelm
parents: 17228
diff changeset
  1013
* Markup commands 'chapter', 'section', 'subsection', 'subsubsection',
dda237f1d299 Markup commands 'chapter' .. 'text' support optional locale specification;
wenzelm
parents: 17228
diff changeset
  1014
and 'text' support optional locale specification '(in loc)', which
17269
wenzelm
parents: 17259
diff changeset
  1015
specifies the default context for interpreting antiquotations.  For
wenzelm
parents: 17259
diff changeset
  1016
example: 'text (in lattice) {* @{thm inf_assoc}*}'.
17259
dda237f1d299 Markup commands 'chapter' .. 'text' support optional locale specification;
wenzelm
parents: 17228
diff changeset
  1017
dda237f1d299 Markup commands 'chapter' .. 'text' support optional locale specification;
wenzelm
parents: 17228
diff changeset
  1018
* Option 'locale=NAME' of antiquotations specifies an alternative
dda237f1d299 Markup commands 'chapter' .. 'text' support optional locale specification;
wenzelm
parents: 17228
diff changeset
  1019
context interpreting the subsequent argument.  For example: @{thm
17269
wenzelm
parents: 17259
diff changeset
  1020
[locale=lattice] inf_assoc}.
17259
dda237f1d299 Markup commands 'chapter' .. 'text' support optional locale specification;
wenzelm
parents: 17228
diff changeset
  1021
17097
78f1b66f70a4 * Proper output of proof terms within a proof context;
wenzelm
parents: 17095
diff changeset
  1022
* Proper output of proof terms (@{prf ...} and @{full_prf ...}) within
78f1b66f70a4 * Proper output of proof terms within a proof context;
wenzelm
parents: 17095
diff changeset
  1023
a proof context.
78f1b66f70a4 * Proper output of proof terms within a proof context;
wenzelm
parents: 17095
diff changeset
  1024
78f1b66f70a4 * Proper output of proof terms within a proof context;
wenzelm
parents: 17095
diff changeset
  1025
* Proper output of antiquotations for theory commands involving a
78f1b66f70a4 * Proper output of proof terms within a proof context;
wenzelm
parents: 17095
diff changeset
  1026
proof context (such as 'locale' or 'theorem (in loc) ...').
78f1b66f70a4 * Proper output of proof terms within a proof context;
wenzelm
parents: 17095
diff changeset
  1027
17193
83708f724822 * Delimiters of outer tokens now produce separate LaTeX macros;
wenzelm
parents: 17189
diff changeset
  1028
* Delimiters of outer tokens (string etc.) now produce separate LaTeX
83708f724822 * Delimiters of outer tokens now produce separate LaTeX macros;
wenzelm
parents: 17189
diff changeset
  1029
macros (\isachardoublequoteopen, isachardoublequoteclose etc.).
83708f724822 * Delimiters of outer tokens now produce separate LaTeX macros;
wenzelm
parents: 17189
diff changeset
  1030
83708f724822 * Delimiters of outer tokens now produce separate LaTeX macros;
wenzelm
parents: 17189
diff changeset
  1031
* isatool usedir: new option -C (default true) controls whether option
83708f724822 * Delimiters of outer tokens now produce separate LaTeX macros;
wenzelm
parents: 17189
diff changeset
  1032
-D should include a copy of the original document directory; -C false
83708f724822 * Delimiters of outer tokens now produce separate LaTeX macros;
wenzelm
parents: 17189
diff changeset
  1033
prevents unwanted effects such as copying of administrative CVS data.
83708f724822 * Delimiters of outer tokens now produce separate LaTeX macros;
wenzelm
parents: 17189
diff changeset
  1034
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1035
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1036
*** Pure ***
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1037
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1038
* Considerably improved version of 'constdefs' command.  Now performs
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1039
automatic type-inference of declared constants; additional support for
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1040
local structure declarations (cf. locales and HOL records), see also
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1041
isar-ref manual.  Potential INCOMPATIBILITY: need to observe strictly
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1042
sequential dependencies of definitions within a single 'constdefs'
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1043
section; moreover, the declared name needs to be an identifier.  If
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1044
all fails, consider to fall back on 'consts' and 'defs' separately.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1045
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1046
* Improved indexed syntax and implicit structures.  First of all,
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1047
indexed syntax provides a notational device for subscripted
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1048
application, using the new syntax \<^bsub>term\<^esub> for arbitrary
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1049
expressions.  Secondly, in a local context with structure
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1050
declarations, number indexes \<^sub>n or the empty index (default
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1051
number 1) refer to a certain fixed variable implicitly; option
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1052
show_structs controls printing of implicit structures.  Typical
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1053
applications of these concepts involve record types and locales.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1054
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1055
* New command 'no_syntax' removes grammar declarations (and
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1056
translations) resulting from the given syntax specification, which is
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1057
interpreted in the same manner as for the 'syntax' command.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1058
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1059
* 'Advanced' translation functions (parse_translation etc.) may depend
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1060
on the signature of the theory context being presently used for
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1061
parsing/printing, see also isar-ref manual.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1062
16856
6468a5d6a16e * Improved 'oracle' command -- type-safe;
wenzelm
parents: 16799
diff changeset
  1063
* Improved 'oracle' command provides a type-safe interface to turn an
6468a5d6a16e * Improved 'oracle' command -- type-safe;
wenzelm
parents: 16799
diff changeset
  1064
ML expression of type theory -> T -> term into a primitive rule of
6468a5d6a16e * Improved 'oracle' command -- type-safe;
wenzelm
parents: 16799
diff changeset
  1065
type theory -> T -> thm (i.e. the functionality of Thm.invoke_oracle
6468a5d6a16e * Improved 'oracle' command -- type-safe;
wenzelm
parents: 16799
diff changeset
  1066
is already included here); see also FOL/ex/IffExample.thy;
6468a5d6a16e * Improved 'oracle' command -- type-safe;
wenzelm
parents: 16799
diff changeset
  1067
INCOMPATIBILITY.
6468a5d6a16e * Improved 'oracle' command -- type-safe;
wenzelm
parents: 16799
diff changeset
  1068
17275
44d8fbc2e52d axclass: name space prefix is now "c_class" instead of just "c";
wenzelm
parents: 17269
diff changeset
  1069
* axclass: name space prefix for class "c" is now "c_class" (was "c"
44d8fbc2e52d axclass: name space prefix is now "c_class" instead of just "c";
wenzelm
parents: 17269
diff changeset
  1070
before); "cI" is no longer bound, use "c.intro" instead.
44d8fbc2e52d axclass: name space prefix is now "c_class" instead of just "c";
wenzelm
parents: 17269
diff changeset
  1071
INCOMPATIBILITY.  This change avoids clashes of fact bindings for
44d8fbc2e52d axclass: name space prefix is now "c_class" instead of just "c";
wenzelm
parents: 17269
diff changeset
  1072
axclasses vs. locales.
44d8fbc2e52d axclass: name space prefix is now "c_class" instead of just "c";
wenzelm
parents: 17269
diff changeset
  1073
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1074
* Improved internal renaming of symbolic identifiers -- attach primes
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1075
instead of base 26 numbers.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1076
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1077
* New flag show_question_marks controls printing of leading question
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1078
marks in schematic variable names.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1079
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1080
* In schematic variable names, *any* symbol following \<^isub> or
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1081
\<^isup> is now treated as part of the base name.  For example, the
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1082
following works without printing of awkward ".0" indexes:
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1083
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1084
  lemma "x\<^isub>1 = x\<^isub>2 ==> x\<^isub>2 = x\<^isub>1"
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1085
    by simp
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1086
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1087
* Inner syntax includes (*(*nested*) comments*).
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1088
17548
wenzelm
parents: 17538
diff changeset
  1089
* Pretty printer now supports unbreakable blocks, specified in mixfix
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1090
annotations as "(00...)".
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1091
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1092
* Clear separation of logical types and nonterminals, where the latter
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1093
may only occur in 'syntax' specifications or type abbreviations.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1094
Before that distinction was only partially implemented via type class
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1095
"logic" vs. "{}".  Potential INCOMPATIBILITY in rare cases of improper
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1096
use of 'types'/'consts' instead of 'nonterminals'/'syntax'.  Some very
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1097
exotic syntax specifications may require further adaption
17691
8cc72452695c revert 'defs' advertisement;
wenzelm
parents: 17684
diff changeset
  1098
(e.g. Cube/Cube.thy).
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1099
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1100
* Removed obsolete type class "logic", use the top sort {} instead.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1101
Note that non-logical types should be declared as 'nonterminals'
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1102
rather than 'types'.  INCOMPATIBILITY for new object-logic
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1103
specifications.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1104
17095
669005f73b81 Interpretation in locales.
ballarin
parents: 17092
diff changeset
  1105
* Attributes 'induct' and 'cases': type or set names may now be
669005f73b81 Interpretation in locales.
ballarin
parents: 17092
diff changeset
  1106
locally fixed variables as well.
669005f73b81 Interpretation in locales.
ballarin
parents: 17092
diff changeset
  1107
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1108
* Simplifier: can now control the depth to which conditional rewriting
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1109
is traced via the PG menu Isabelle -> Settings -> Trace Simp Depth
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1110
Limit.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1111
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1112
* Simplifier: simplification procedures may now take the current
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1113
simpset into account (cf. Simplifier.simproc(_i) / mk_simproc
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1114
interface), which is very useful for calling the Simplifier
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1115
recursively.  Minor INCOMPATIBILITY: the 'prems' argument of simprocs
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1116
is gone -- use prems_of_ss on the simpset instead.  Moreover, the
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1117
low-level mk_simproc no longer applies Logic.varify internally, to
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1118
allow for use in a context of fixed variables.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1119
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1120
* thin_tac now works even if the assumption being deleted contains !!
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1121
or ==>.  More generally, erule now works even if the major premise of
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1122
the elimination rule contains !! or ==>.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1123
17597
wenzelm
parents: 17595
diff changeset
  1124
* Method 'rules' has been renamed to 'iprover'. INCOMPATIBILITY.
17590
56dc95e8b5c5 *** empty log message ***
nipkow
parents: 17584
diff changeset
  1125
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1126
* Reorganized bootstrapping of the Pure theories; CPure is now derived
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1127
from Pure, which contains all common declarations already.  Both
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1128
theories are defined via plain Isabelle/Isar .thy files.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1129
INCOMPATIBILITY: elements of CPure (such as the CPure.intro /
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1130
CPure.elim / CPure.dest attributes) now appear in the Pure name space;
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1131
use isatool fixcpure to adapt your theory and ML sources.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1132
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1133
* New syntax 'name(i-j, i-, i, ...)' for referring to specific
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1134
selections of theorems in named facts via index ranges.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1135
17097
78f1b66f70a4 * Proper output of proof terms within a proof context;
wenzelm
parents: 17095
diff changeset
  1136
* 'print_theorems': in theory mode, really print the difference
78f1b66f70a4 * Proper output of proof terms within a proof context;
wenzelm
parents: 17095
diff changeset
  1137
wrt. the last state (works for interactive theory development only),
78f1b66f70a4 * Proper output of proof terms within a proof context;
wenzelm
parents: 17095
diff changeset
  1138
in proof mode print all local facts (cf. 'print_facts');
78f1b66f70a4 * Proper output of proof terms within a proof context;
wenzelm
parents: 17095
diff changeset
  1139
17397
4ef3da248c48 hide: added option '(open)';
wenzelm
parents: 17393
diff changeset
  1140
* 'hide': option '(open)' hides only base names.
4ef3da248c48 hide: added option '(open)';
wenzelm
parents: 17393
diff changeset
  1141
17275
44d8fbc2e52d axclass: name space prefix is now "c_class" instead of just "c";
wenzelm
parents: 17269
diff changeset
  1142
* More efficient treatment of intermediate checkpoints in interactive
44d8fbc2e52d axclass: name space prefix is now "c_class" instead of just "c";
wenzelm
parents: 17269
diff changeset
  1143
theory development.
44d8fbc2e52d axclass: name space prefix is now "c_class" instead of just "c";
wenzelm
parents: 17269
diff changeset
  1144
17663
28be54ff74f8 Added entries for code_module, code_library, and value.
berghofe
parents: 17641
diff changeset
  1145
* Code generator is now invoked via code_module (incremental code
17664
wenzelm
parents: 17663
diff changeset
  1146
generation) and code_library (modular code generation, ML structures
wenzelm
parents: 17663
diff changeset
  1147
for each theory).  INCOMPATIBILITY: new keywords 'file' and 'contains'
wenzelm
parents: 17663
diff changeset
  1148
must be quoted when used as identifiers.
wenzelm
parents: 17663
diff changeset
  1149
wenzelm
parents: 17663
diff changeset
  1150
* New 'value' command for reading, evaluating and printing terms using
wenzelm
parents: 17663
diff changeset
  1151
the code generator.  INCOMPATIBILITY: command keyword 'value' must be
wenzelm
parents: 17663
diff changeset
  1152
quoted when used as identifier.
17663
28be54ff74f8 Added entries for code_module, code_library, and value.
berghofe
parents: 17641
diff changeset
  1153
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1154
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1155
*** Locales ***
17095
669005f73b81 Interpretation in locales.
ballarin
parents: 17092
diff changeset
  1156
17385
4dcae6e62268 HOL: method comm_ring;
wenzelm
parents: 17371
diff changeset
  1157
* New commands for the interpretation of locale expressions in
4dcae6e62268 HOL: method comm_ring;
wenzelm
parents: 17371
diff changeset
  1158
theories (1), locales (2) and proof contexts (3).  These generate
4dcae6e62268 HOL: method comm_ring;
wenzelm
parents: 17371
diff changeset
  1159
proof obligations from the expression specification.  After the
4dcae6e62268 HOL: method comm_ring;
wenzelm
parents: 17371
diff changeset
  1160
obligations have been discharged, theorems of the expression are added
4dcae6e62268 HOL: method comm_ring;
wenzelm
parents: 17371
diff changeset
  1161
to the theory, target locale or proof context.  The synopsis of the
4dcae6e62268 HOL: method comm_ring;
wenzelm
parents: 17371
diff changeset
  1162
commands is a follows:
4dcae6e62268 HOL: method comm_ring;
wenzelm
parents: 17371
diff changeset
  1163
17095
669005f73b81 Interpretation in locales.
ballarin
parents: 17092
diff changeset
  1164
  (1) interpretation expr inst
669005f73b81 Interpretation in locales.
ballarin
parents: 17092
diff changeset
  1165
  (2) interpretation target < expr
669005f73b81 Interpretation in locales.
ballarin
parents: 17092
diff changeset
  1166
  (3) interpret expr inst
17385
4dcae6e62268 HOL: method comm_ring;
wenzelm
parents: 17371
diff changeset
  1167
17095
669005f73b81 Interpretation in locales.
ballarin
parents: 17092
diff changeset
  1168
Interpretation in theories and proof contexts require a parameter
669005f73b81 Interpretation in locales.
ballarin
parents: 17092
diff changeset
  1169
instantiation of terms from the current context.  This is applied to
17385
4dcae6e62268 HOL: method comm_ring;
wenzelm
parents: 17371
diff changeset
  1170
specifications and theorems of the interpreted expression.
4dcae6e62268 HOL: method comm_ring;
wenzelm
parents: 17371
diff changeset
  1171
Interpretation in locales only permits parameter renaming through the
4dcae6e62268 HOL: method comm_ring;
wenzelm
parents: 17371
diff changeset
  1172
locale expression.  Interpretation is smart in that interpretations
4dcae6e62268 HOL: method comm_ring;
wenzelm
parents: 17371
diff changeset
  1173
that are active already do not occur in proof obligations, neither are
4dcae6e62268 HOL: method comm_ring;
wenzelm
parents: 17371
diff changeset
  1174
instantiated theorems stored in duplicate.  Use 'print_interps' to
4dcae6e62268 HOL: method comm_ring;
wenzelm
parents: 17371
diff changeset
  1175
inspect active interpretations of a particular locale.  For details,
17436
ballarin
parents: 17425
diff changeset
  1176
see the Isar Reference manual.  Examples can be found in
ballarin
parents: 17425
diff changeset
  1177
HOL/Finite_Set.thy and HOL/Algebra/UnivPoly.thy.
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1178
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1179
INCOMPATIBILITY: former 'instantiate' has been withdrawn, use
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1180
'interpret' instead.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1181
17385
4dcae6e62268 HOL: method comm_ring;
wenzelm
parents: 17371
diff changeset
  1182
* New context element 'constrains' for adding type constraints to
4dcae6e62268 HOL: method comm_ring;
wenzelm
parents: 17371
diff changeset
  1183
parameters.
4dcae6e62268 HOL: method comm_ring;
wenzelm
parents: 17371
diff changeset
  1184
4dcae6e62268 HOL: method comm_ring;
wenzelm
parents: 17371
diff changeset
  1185
* Context expressions: renaming of parameters with syntax
4dcae6e62268 HOL: method comm_ring;
wenzelm
parents: 17371
diff changeset
  1186
redeclaration.
17095
669005f73b81 Interpretation in locales.
ballarin
parents: 17092
diff changeset
  1187
669005f73b81 Interpretation in locales.
ballarin
parents: 17092
diff changeset
  1188
* Locale declaration: 'includes' disallowed.
669005f73b81 Interpretation in locales.
ballarin
parents: 17092
diff changeset
  1189
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1190
* Proper static binding of attribute syntax -- i.e. types / terms /
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1191
facts mentioned as arguments are always those of the locale definition
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1192
context, independently of the context of later invocations.  Moreover,
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1193
locale operations (renaming and type / term instantiation) are applied
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1194
to attribute arguments as expected.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1195
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1196
INCOMPATIBILITY of the ML interface: always pass Attrib.src instead of
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1197
actual attributes; rare situations may require Attrib.attribute to
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1198
embed those attributes into Attrib.src that lack concrete syntax.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1199
Attribute implementations need to cooperate properly with the static
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1200
binding mechanism.  Basic parsers Args.XXX_typ/term/prop and
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1201
Attrib.XXX_thm etc. already do the right thing without further
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1202
intervention.  Only unusual applications -- such as "where" or "of"
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1203
(cf. src/Pure/Isar/attrib.ML), which process arguments depending both
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1204
on the context and the facts involved -- may have to assign parsed
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1205
values to argument tokens explicitly.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1206
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1207
* Changed parameter management in theorem generation for long goal
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1208
statements with 'includes'.  INCOMPATIBILITY: produces a different
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1209
theorem statement in rare situations.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1210
17228
19b460b39dad print_locale omits facts by default
ballarin
parents: 17193
diff changeset
  1211
* Locale inspection command 'print_locale' omits notes elements.  Use
19b460b39dad print_locale omits facts by default
ballarin
parents: 17193
diff changeset
  1212
'print_locale!' to have them included in the output.
19b460b39dad print_locale omits facts by default
ballarin
parents: 17193
diff changeset
  1213
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1214
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1215
*** Provers ***
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1216
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1217
* Provers/hypsubst.ML: improved version of the subst method, for
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1218
single-step rewriting: it now works in bound variable contexts. New is
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1219
'subst (asm)', for rewriting an assumption.  INCOMPATIBILITY: may
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1220
rewrite a different subterm than the original subst method, which is
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1221
still available as 'simplesubst'.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1222
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1223
* Provers/quasi.ML: new transitivity reasoners for transitivity only
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1224
and quasi orders.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1225
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1226
* Provers/trancl.ML: new transitivity reasoner for transitive and
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1227
reflexive-transitive closure of relations.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1228
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1229
* Provers/blast.ML: new reference depth_limit to make blast's depth
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1230
limit (previously hard-coded with a value of 20) user-definable.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1231
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1232
* Provers/simplifier.ML has been moved to Pure, where Simplifier.setup
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1233
is peformed already.  Object-logics merely need to finish their
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1234
initial simpset configuration as before.  INCOMPATIBILITY.
15703
727ef1b8b3ee *** empty log message ***
wenzelm
parents: 15696
diff changeset
  1235
15475
fdf9434b04ea - Proofs are now hidden by default when generating documents
berghofe
parents: 15454
diff changeset
  1236
14700
2f885b7e5ba7 reimplementation of HOL records; only one type is created for
schirmer
parents: 14699
diff changeset
  1237
*** HOL ***
2f885b7e5ba7 reimplementation of HOL records; only one type is created for
schirmer
parents: 14699
diff changeset
  1238
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1239
* Symbolic syntax of Hilbert Choice Operator is now as follows:
14878
b884a7ba7238 HOL: symbolic syntax of Eps;
wenzelm
parents: 14854
diff changeset
  1240
b884a7ba7238 HOL: symbolic syntax of Eps;
wenzelm
parents: 14854
diff changeset
  1241
  syntax (epsilon)
b884a7ba7238 HOL: symbolic syntax of Eps;
wenzelm
parents: 14854
diff changeset
  1242
    "_Eps" :: "[pttrn, bool] => 'a"    ("(3\<some>_./ _)" [0, 10] 10)
b884a7ba7238 HOL: symbolic syntax of Eps;
wenzelm
parents: 14854
diff changeset
  1243
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1244
The symbol \<some> is displayed as the alternative epsilon of LaTeX
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1245
and x-symbol; use option '-m epsilon' to get it actually printed.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1246
Moreover, the mathematically important symbolic identifier \<epsilon>
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1247
becomes available as variable, constant etc.  INCOMPATIBILITY,
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1248
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1249
* "x > y" abbreviates "y < x" and "x >= y" abbreviates "y <= x".
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1250
Similarly for all quantifiers: "ALL x > y" etc.  The x-symbol for >=
17371
wenzelm
parents: 17275
diff changeset
  1251
is \<ge>. New transitivity rules have been added to HOL/Orderings.thy to
17016
73c74cb1d744 mentioned change to exp_ge_add_one_self, new transitivity rules
avigad
parents: 16997
diff changeset
  1252
support corresponding Isar calculations.
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1253
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1254
* "{x:A. P}" abbreviates "{x. x:A & P}", and similarly for "\<in>"
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1255
instead of ":".
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1256
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1257
* theory SetInterval: changed the syntax for open intervals:
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1258
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1259
  Old       New
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1260
  {..n(}    {..<n}
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1261
  {)n..}    {n<..}
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1262
  {m..n(}   {m..<n}
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1263
  {)m..n}   {m<..n}
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1264
  {)m..n(}  {m<..<n}
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1265
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1266
The old syntax is still supported but will disappear in the next
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1267
release.  For conversion use the following Emacs search and replace
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1268
patterns (these are not perfect but work quite well):
15046
d6a4c3992e9d *** empty log message ***
nipkow
parents: 15044
diff changeset
  1269
d6a4c3992e9d *** empty log message ***
nipkow
parents: 15044
diff changeset
  1270
  {)\([^\.]*\)\.\.  ->  {\1<\.\.}
d6a4c3992e9d *** empty log message ***
nipkow
parents: 15044
diff changeset
  1271
  \.\.\([^(}]*\)(}  ->  \.\.<\1}
d6a4c3992e9d *** empty log message ***
nipkow
parents: 15044
diff changeset
  1272
17533
wenzelm
parents: 17519
diff changeset
  1273
* Theory Commutative_Ring (in Library): method comm_ring for proving
wenzelm
parents: 17519
diff changeset
  1274
equalities in commutative rings; method 'algebra' provides a generic
wenzelm
parents: 17519
diff changeset
  1275
interface.
17389
b4743198b939 Method comm_ring for proving equalities in commutative rings.
wenzelm
parents: 17385
diff changeset
  1276
b4743198b939 Method comm_ring for proving equalities in commutative rings.
wenzelm
parents: 17385
diff changeset
  1277
* Theory Finite_Set: changed the syntax for 'setsum', summation over
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1278
finite sets: "setsum (%x. e) A", which used to be "\<Sum>x:A. e", is
17371
wenzelm
parents: 17275
diff changeset
  1279
now either "SUM x:A. e" or "\<Sum>x \<in> A. e". The bound variable can
17189
b15f8e094874 patterns in setsum and setprod
paulson
parents: 17172
diff changeset
  1280
be a tuple pattern.
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1281
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1282
Some new syntax forms are available:
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1283
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1284
  "\<Sum>x | P. e"      for     "setsum (%x. e) {x. P}"
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1285
  "\<Sum>x = a..b. e"   for     "setsum (%x. e) {a..b}"
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1286
  "\<Sum>x = a..<b. e"  for     "setsum (%x. e) {a..<b}"
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1287
  "\<Sum>x < k. e"      for     "setsum (%x. e) {..<k}"
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1288
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1289
The latter form "\<Sum>x < k. e" used to be based on a separate
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1290
function "Summation", which has been discontinued.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1291
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1292
* theory Finite_Set: in structured induction proofs, the insert case
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1293
is now 'case (insert x F)' instead of the old counterintuitive 'case
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1294
(insert F x)'.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1295
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1296
* The 'refute' command has been extended to support a much larger
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1297
fragment of HOL, including axiomatic type classes, constdefs and
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1298
typedefs, inductive datatypes and recursion.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1299
17700
ac97a91d5572 pointer to HOL/ex/SAT_Examples.thy added
webertj
parents: 17691
diff changeset
  1300
* New tactics 'sat' and 'satx' to prove propositional tautologies.
ac97a91d5572 pointer to HOL/ex/SAT_Examples.thy added
webertj
parents: 17691
diff changeset
  1301
Requires zChaff with proof generation to be installed.  See
ac97a91d5572 pointer to HOL/ex/SAT_Examples.thy added
webertj
parents: 17691
diff changeset
  1302
HOL/ex/SAT_Examples.thy for examples.
17619
026f7bbc8a0f new sat tactic
webertj
parents: 17597
diff changeset
  1303
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1304
* Datatype induction via method 'induct' now preserves the name of the
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1305
induction variable. For example, when proving P(xs::'a list) by
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1306
induction on xs, the induction step is now P(xs) ==> P(a#xs) rather
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1307
than P(list) ==> P(a#list) as previously.  Potential INCOMPATIBILITY
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1308
in unstructured proof scripts.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1309
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1310
* Reworked implementation of records.  Improved scalability for
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1311
records with many fields, avoiding performance problems for type
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1312
inference. Records are no longer composed of nested field types, but
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1313
of nested extension types. Therefore the record type only grows linear
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1314
in the number of extensions and not in the number of fields.  The
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1315
top-level (users) view on records is preserved.  Potential
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1316
INCOMPATIBILITY only in strange cases, where the theory depends on the
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1317
old record representation. The type generated for a record is called
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1318
<record_name>_ext_type.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1319
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1320
Flag record_quick_and_dirty_sensitive can be enabled to skip the
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1321
proofs triggered by a record definition or a simproc (if
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1322
quick_and_dirty is enabled).  Definitions of large records can take
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1323
quite long.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1324
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1325
New simproc record_upd_simproc for simplification of multiple record
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1326
updates enabled by default.  Moreover, trivial updates are also
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1327
removed: r(|x := x r|) = r.  INCOMPATIBILITY: old proofs break
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1328
occasionally, since simplification is more powerful by default.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1329
17275
44d8fbc2e52d axclass: name space prefix is now "c_class" instead of just "c";
wenzelm
parents: 17269
diff changeset
  1330
* typedef: proper support for polymorphic sets, which contain extra
44d8fbc2e52d axclass: name space prefix is now "c_class" instead of just "c";
wenzelm
parents: 17269
diff changeset
  1331
type-variables in the term.
44d8fbc2e52d axclass: name space prefix is now "c_class" instead of just "c";
wenzelm
parents: 17269
diff changeset
  1332
16234
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1333
* Simplifier: automatically reasons about transitivity chains
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1334
involving "trancl" (r^+) and "rtrancl" (r^*) by setting up tactics
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1335
provided by Provers/trancl.ML as additional solvers.  INCOMPATIBILITY:
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1336
old proofs break occasionally as simplification may now solve more
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1337
goals than previously.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1338
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1339
* Simplifier: converts x <= y into x = y if assumption y <= x is
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1340
present.  Works for all partial orders (class "order"), in particular
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1341
numbers and sets.  For linear orders (e.g. numbers) it treats ~ x < y
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1342
just like y <= x.
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1343
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1344
* Simplifier: new simproc for "let x = a in f x".  If a is a free or
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1345
bound variable or a constant then the let is unfolded.  Otherwise
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1346
first a is simplified to b, and then f b is simplified to g. If
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1347
possible we abstract b from g arriving at "let x = b in h x",
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1348
otherwise we unfold the let and arrive at g.  The simproc can be
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1349
enabled/disabled by the reference use_let_simproc.  Potential
421c3522f160 major reorganization and cleanup;
wenzelm
parents: 16181
diff changeset
  1350
INCOMPATIBILITY since simplification is more powerful by default.
15776
e2f45df0696f refute extended
webertj
parents: 15763
diff changeset
  1351
16563
a92f96951355 meson method taking an argument list
paulson
parents: 16547
diff changeset
  1352
* Classical reasoning: the meson method now accepts theorems as arguments.
a92f96951355 meson method taking an argument list
paulson
parents: 16547
diff changeset
  1353
17595
3e3a30bf702f ATP linkup
paulson
parents: 17590
diff changeset
  1354
* Prover support: pre-release of the Isabelle-ATP linkup, which runs background
3e3a30bf702f ATP linkup
paulson
parents: 17590
diff changeset
  1355
jobs to provide advice on the provability of subgoals.
3e3a30bf702f ATP linkup
paulson
parents: 17590
diff changeset
  1356
16891
wenzelm
parents: 16888
diff changeset
  1357
* Theory OrderedGroup and Ring_and_Field: various additions and
wenzelm
parents: 16888
diff changeset
  1358
improvements to faciliate calculations involving equalities and
wenzelm
parents: 16888
diff changeset
  1359
inequalities.
wenzelm
parents: 16888
diff changeset
  1360
wenzelm
parents: 16888
diff changeset
  1361
The following theorems have been eliminated or modified
wenzelm
parents: 16888
diff changeset
  1362
(INCOMPATIBILITY):
16888
7cb4bcfa058e added list of theorem changes to NEWS
avigad
parents: 16869
diff changeset
  1363
7cb4bcfa058e added list of theorem changes to NEWS
avigad
parents: 16869
diff changeset
  1364
  abs_eq             now named abs_of_nonneg
17371
wenzelm
parents: 17275
diff changeset
  1365
  abs_of_ge_0        now named abs_of_nonneg
wenzelm
parents: 17275
diff changeset
  1366
  abs_minus_eq       now named abs_of_nonpos
16888
7cb4bcfa058e added list of theorem changes to NEWS
avigad
parents: 16869
diff changeset
  1367
  imp_abs_id         now named abs_of_nonneg
7cb4bcfa058e added list of theorem changes to NEWS
avigad
parents: 16869
diff changeset
  1368
  imp_abs_neg_id     now named abs_of_nonpos
7cb4bcfa058e added list of theorem changes to NEWS
avigad
parents: 16869
diff changeset
  1369
  mult_pos           now named mult_pos_pos
7cb4bcfa058e added list of theorem changes to NEWS
avigad
parents: 16869
diff changeset
  1370
  mult_pos_le        now named mult_nonneg_nonneg
7cb4bcfa058e added list of theorem changes to NEWS
avigad
parents: 16869
diff changeset
  1371
  mult_pos_neg_le    now named mult_nonneg_nonpos
7cb4bcfa058e added list of theorem changes to NEWS
avigad
parents: 16869
diff changeset
  1372
  mult_pos_neg2_le   now named mult_nonneg_nonpos2
7cb4bcfa058e added list of theorem changes to NEWS
avigad
parents: 16869
diff changeset
  1373
  mult_neg           now named mult_neg_neg
7cb4bcfa058e added list of theorem changes to NEWS
avigad
parents: 16869
diff changeset
  1374
  mult_neg_le        now named mult_nonpos_nonpos
7cb4bcfa058e added list of theorem changes to NEWS
avigad
parents: 16869
diff changeset
  1375
16891
wenzelm
parents: 16888
diff changeset
  1376
* Theory Parity: added rules for simplifying exponents.
wenzelm
parents: 16888
diff changeset
  1377
17092
16971afe75f6 *** empty log message ***
nipkow
parents: 17047
diff changeset
  1378
* Theory List:
16971afe75f6 *** empty log message ***
nipkow
parents: 17047
diff changeset
  1379
16971afe75f6 *** empty log message ***
nipkow
parents: 17047
diff changeset
  1380
The following theorems have been eliminated or modified
16971afe75f6 *** empty log message ***
nipkow
parents: 17047
diff changeset
  1381
(INCOMPATIBILITY):
16971afe75f6 *** empty log message ***
nipkow
parents: 17047
diff changeset
  1382
16971afe75f6 *** empty log message ***
nipkow
parents: 17047
diff changeset
  1383
  list_all_Nil       now named list_all.simps(1)
16971afe75f6 *** empty log message ***
nipkow
parents: 17047
diff changeset
  1384
  list_all_Cons      now named list_all.simps(2)
16971afe75f6 *** empty log message ***
nipkow
parents: 17047
diff changeset
  1385
  list_all_conv      now named list_all_iff
16971afe75f6 *** empty log message ***
nipkow
parents: 17047
diff changeset
  1386
  set_mem_eq         now named mem_iff
16971afe75f6 *** empty log message ***
nipkow
parents: 17047
diff changeset
  1387
16929
wenzelm
parents: 16908
diff changeset
  1388
* Theories SetsAndFunctions and BigO (see HOL/Library) support
wenzelm
parents: 16908
diff changeset
  1389
asymptotic "big O" calculations.  See the notes in BigO.thy.
wenzelm
parents: 16908
diff changeset
  1390
16888
7cb4bcfa058e added list of theorem changes to NEWS
avigad
parents: 16869
diff changeset
  1391
7cb4bcfa058e added list of theorem changes to NEWS
avigad
parents: 16869
diff changeset
  1392
*** HOL-Complex ***
7cb4bcfa058e added list of theorem changes to NEWS
avigad
parents: 16869
diff changeset
  1393
16891
wenzelm
parents: 16888
diff changeset
  1394
* Theory RealDef: better support for embedding natural numbers and
wenzelm
parents: 16888
diff changeset
  1395
integers in the reals.
wenzelm
parents: 16888
diff changeset
  1396
wenzelm
parents: 16888
diff changeset
  1397
The following theorems have been eliminated or modified
wenzelm
parents: 16888
diff changeset
  1398
(INCOMPATIBILITY):
wenzelm
parents: 16888
diff changeset
  1399
17016
73c74cb1d744 mentioned change to exp_ge_add_one_self, new transitivity rules
avigad
parents: 16997
diff changeset
  1400
  exp_ge_add_one_self  now requires no hypotheses
73c74cb1d744 mentioned change to exp_ge_add_one_self, new transitivity rules
avigad
parents: 16997
diff changeset
  1401
  real_of_int_add      reversed direction of equality (use [symmetric])
73c74cb1d744 mentioned change to exp_ge_add_one_self, new transitivity rules
avigad
parents: 16997
diff changeset
  1402
  real_of_int_minus    reversed direction of equality (use [symmetric])
73c74cb1d744 mentioned change to exp_ge_add_one_self, new transitivity rules
avigad
parents: 16997
diff changeset
  1403
  real_of_int_diff     reversed direction of equality (use [symmetric])
73c74cb1d744 mentioned change to exp_ge_add_one_self, new transitivity rules
avigad
parents: 16997
diff changeset
  1404
  real_of_int_mult     reversed direction of equality (use [symmetric])
16891
wenzelm
parents: 16888
diff changeset
  1405
wenzelm
parents: 16888
diff changeset
  1406
* Theory RComplete: expanded support for floor and ceiling functions.
16888
7cb4bcfa058e added list of theorem changes to NEWS
avigad
parents: 16869
diff changeset
  1407
16962
f99dd1274c5f mentioned Ln in NEWS
avigad
parents: 16929
diff changeset
  1408
* Theory Ln is new, with properties of the natural logarithm
f99dd1274c5f mentioned Ln in NEWS
avigad
parents: 16929
diff changeset
  1409
17423
de6b33a4efda incorporated HOL/Hyperreal/CHANGES;
wenzelm
parents: 17408
diff changeset
  1410
* Hyperreal: There is a new type constructor "star" for making
de6b33a4efda incorporated HOL/Hyperreal/CHANGES;
wenzelm
parents: 17408
diff changeset
  1411
nonstandard types.  The old type names are now type synonyms:
de6b33a4efda incorporated HOL/Hyperreal/CHANGES;
wenzelm
parents: 17408
diff changeset
  1412
de6b33a4efda incorporated HOL/Hyperreal/CHANGES;
wenzelm
parents: 17408
diff changeset
  1413
  hypreal = real star