NEWS
author wenzelm
Tue, 16 Jan 2001 00:33:40 +0100
changeset 10911 eb5721204b38
parent 10868 5af3906edec8
child 10915 6b66a8a530ce
permissions -rw-r--r--
proper induction rule for arbitrarily branching datatype;
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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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*** Overview of INCOMPATIBILITIES ***
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* HOL/Real: "rinv" and "hrinv" replaced by overloaded "inverse"
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operation;
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* HOL: induct renamed to lfp_induct;
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* HOL: contrapos, contrapos2 renamed to contrapos_nn, contrapos_pp;
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* HOL: infix "dvd" now has priority 50 rather than 70 (because it is a
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relation); infix "^^" has been renamed "``"; infix "``" has been
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renamed "`"; "univalent" has been renamed "single_valued";
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* HOLCF: infix "`" has been renamed "$"; the symbol syntax is \<cdot>;
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* Isar: 'obtain' no longer declares "that" fact as simp/intro;
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* Isar/HOL: method 'induct' now handles non-atomic goals; as a
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consequence, it is no longer monotonic wrt. the local goal context
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(which is now passed through the inductive cases);
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*** Document preparation ***
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87771e2f49fe * HOL/Library: a collection of generic theories to be used together
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* improved isabelle style files; more abstract symbol implementation
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(should now use \isamath{...} and \isatext{...} in custom symbol
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definitions);
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* \isabellestyle{NAME} selects version of Isabelle output (currently
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available: are "it" for near math-mode best-style output, "sl" for
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slanted text style, and "tt" for plain type-writer; if no
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\isabellestyle command is given, output is according to slanted
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type-writer);
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* support sub/super scripts (for single symbols only), input syntax is
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like this: "A\<^sup>*" or "A\<^sup>\<star>";
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* some more standard symbols; see Appendix A of the system manual for
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the complete list;
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* antiquotation @{goals} and @{subgoals} for output of *dynamic* goals
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state; Note that presentation of goal states does not conform to
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actual human-readable proof documents.  Please do not include goal
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states into document output unless you really know what you are doing!
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* isatool unsymbolize tunes sources for plain ASCII communication;
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*** Isar ***
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* Pure: Isar now suffers initial goal statements to contain unbound
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schematic variables (this does not conform to actual readable proof
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documents, due to unpredictable outcome and non-compositional proof
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checking); users who know what they are doing may use schematic goals
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for Prolog-style synthesis of proven results;
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* Pure: assumption method (an implicit finishing) now handles actual
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rules as well;
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* Pure: improved 'obtain' --- moved to Pure, insert "that" into
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initial goal, declare "that" only as Pure intro (only for single
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steps); the "that" rule assumption may now be involved in implicit
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finishing, thus ".." becomes a feasible for trivial obtains;
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* Pure: default proof step now includes 'intro_classes'; thus trivial
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instance proofs may be performed by "..";
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* Pure: ?thesis / ?this / "..." now work for pure meta-level
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statements as well;
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* Pure: the builtin notion of 'finished' goal now includes the ==-refl
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rule (as well as the assumption rule);
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* Pure: 'thm_deps' command visualizes dependencies of theorems and
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lemmas, using the graph browser tool;
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* HOL: improved method 'induct' --- now handles non-atomic goals
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(potential INCOMPATIBILITY); tuned error handling;
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* HOL: cases and induct rules now provide explicit hints about the
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number of facts to be consumed (0 for "type" and 1 for "set" rules);
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any remaining facts are inserted into the goal verbatim;
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* HOL: local contexts (aka cases) may now contain term bindings as
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well; the 'cases' and 'induct' methods new provide a ?case binding for
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the result to be shown in each case;
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* HOL: added 'recdef_tc' command;
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*** HOL ***
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* HOL/Library: a collection of generic theories to be used together
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with main HOL; the theory loader path already includes this directory
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by default; the following existing theories have been moved here:
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HOL/Induct/Multiset, HOL/Induct/Acc (as Accessible_Part), HOL/While
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(as While_Combinator), HOL/Lex/Prefix (as List_Prefix);
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* HOL basics: added overloaded operations "inverse" and "divide"
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(infix "/"), syntax for generic "abs" operation, generic summation
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operator;
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* HOL/typedef: simplified package, provide more useful rules (see also
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HOL/subset.thy);
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* HOL-Hyperreal: a new target, extending HOL-Real with the hyperreals and 
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Fleuriot's mechanization of analysis;
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* HOL-Real, HOL-Hyperreals: improved arithmetic simplification;
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*** CTT ***
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* CTT: x-symbol support for Pi, Sigma, -->, : (membership); note that
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"lam" is displayed as TWO lambda-symbols
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* CTT: theory Main now available, containing everything (that is, Bool
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and Arith);
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*** General ***
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* print modes "brackets" and "no_brackets" control output of nested =>
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(types) and ==> (props); the default behaviour is "brackets";
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* system: support Poly/ML 4.0 (current beta versions);
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* Pure: the Simplifier has been implemented properly as a derived rule
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outside of the actual kernel (at last!); the overall performance
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penalty in practical applications is about 50%, while reliability of
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the Isabelle inference kernel has been greatly improved;
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* Provers: fast_tac (and friends) now handle actual object-logic rules
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as assumptions as well;
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New in Isabelle99-1 (October 2000)
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----------------------------------
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*** Overview of INCOMPATIBILITIES ***
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* HOL: simplification of natural numbers is much changed; to partly
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recover the old behaviour (e.g. to prevent n+n rewriting to #2*n)
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issue the following ML commands:
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  Delsimprocs Nat_Numeral_Simprocs.cancel_numerals;
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  Delsimprocs [Nat_Numeral_Simprocs.combine_numerals];
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* HOL: simplification no longer dives into case-expressions; this is
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controlled by "t.weak_case_cong" for each datatype t;
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* HOL: nat_less_induct renamed to less_induct;
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* HOL: systematic renaming of the SOME (Eps) rules, may use isatool
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fixsome to patch .thy and .ML sources automatically;
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  select_equality  -> some_equality
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  select_eq_Ex     -> some_eq_ex
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  selectI2EX       -> someI2_ex
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  selectI2         -> someI2
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  selectI          -> someI
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  select1_equality -> some1_equality
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  Eps_sym_eq       -> some_sym_eq_trivial
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  Eps_eq           -> some_eq_trivial
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* HOL: exhaust_tac on datatypes superceded by new generic case_tac;
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* HOL: removed obsolete theorem binding expand_if (refer to split_if
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instead);
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* HOL: the recursion equations generated by 'recdef' are now called
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f.simps instead of f.rules;
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* HOL: qed_spec_mp now also handles bounded ALL as well;
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* HOL: 0 is now overloaded, so the type constraint ":: nat" may
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sometimes be needed;
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* HOL: the constant for "f``x" is now "image" rather than "op ``";
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* HOL: the constant for "f-``x" is now "vimage" rather than "op -``";
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* HOL: the disjoint sum is now "<+>" instead of "Plus"; the cartesian
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product is now "<*>" instead of "Times"; the lexicographic product is
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now "<*lex*>" instead of "**";
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a3da5538d924 *** empty log message ***
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* HOL: theory Sexp is now in HOL/Induct examples (it used to be part
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of main HOL, but was unused); better use HOL's datatype package;
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* HOL: removed "symbols" syntax for constant "override" of theory Map;
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the old syntax may be recovered as follows:
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d1c2bef01e2f removed "symbols" syntax for constant "override";
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  syntax (symbols)
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    override  :: "('a ~=> 'b) => ('a ~=> 'b) => ('a ~=> 'b)"
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      (infixl "\\<oplus>" 100)
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* HOL/Real: "rabs" replaced by overloaded "abs" function;
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c0c583ce0b0b * HOL/ML: even fewer consts are declared as global (see theories Ord,
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* HOL/ML: even fewer consts are declared as global (see theories Ord,
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Lfp, Gfp, WF); this only affects ML packages that refer to const names
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internally;
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* HOL and ZF: syntax for quotienting wrt an equivalence relation
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changed from A/r to A//r;
9908
7c7ff65b6846 HOL: qed_spec_mp now also removes bounded ALL;
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* ZF: new treatment of arithmetic (nat & int) may break some old
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proofs;
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* Isar: renamed some attributes (RS -> THEN, simplify -> simplified,
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rulify -> rule_format, elimify -> elim_format, ...);
9542
fa19ffdbe1de ZF arith
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9941
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* Isar/Provers: intro/elim/dest attributes changed; renamed
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intro/intro!/intro!! flags to intro!/intro/intro? (in most cases, one
9937
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   218
should have to change intro!! to intro? only); replaced "delrule" by
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"rule del";
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9612
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   221
* Isar/HOL: renamed "intrs" to "intros" in inductive definitions;
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
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9437
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* Provers: strengthened force_tac by using new first_best_tac;
9402
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* LaTeX document preparation: several changes of isabelle.sty (see
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   226
lib/texinputs);
8729
094dbd0fad0c * improved name spaces: ambiguous output is qualified; support for
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8014
fdf1281a3d0c HOL changes
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8487
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   229
*** Document preparation ***
8358
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
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   230
9198
0ab3c81e9425 * formal comments (text blocks etc.) in new-style theories may now
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* formal comments (text blocks etc.) in new-style theories may now
9753
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contain antiquotations of thm/prop/term/typ/text to be presented
wenzelm
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according to latex print mode; concrete syntax is like this:
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   234
@{term[show_types] "f(x) = a + x"};
9198
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   235
8358
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   236
* isatool mkdir provides easy setup of Isabelle session directories,
8518
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including proper document sources;
8358
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a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
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diff changeset
   239
* generated LaTeX sources are now deleted after successful run
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
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   240
(isatool document -c); may retain a copy somewhere else via -D option
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
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of isatool usedir;
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8566
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   243
* isatool usedir -D now lets isatool latex -o sty update the Isabelle
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   244
style files, achieving self-contained LaTeX sources and simplifying
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   245
LaTeX debugging;
8566
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   246
8518
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   247
* old-style theories now produce (crude) LaTeX output as well;
8358
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   248
9057
af1ca1acf292 * browser info session directories are now self-contained (may be put
wenzelm
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   249
* browser info session directories are now self-contained (may be put
9437
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wenzelm
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diff changeset
   250
on WWW server seperately); improved graphs of nested sessions; removed
93e91040c286 * Isar/Provers: intro/elim/dest attributes: changed
wenzelm
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   251
graph for 'all sessions';
9057
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10003
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* several improvements in isabelle style files; \isabellestyle{it}
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diff changeset
   254
produces fake math mode output; \isamarkupheader is now \section by
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   255
default; see lib/texinputs/isabelle.sty etc.;
9489
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
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   256
8358
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
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   257
8184
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*** Isar ***
6b7ef9fc39da nat as names;
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   259
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* Isar/Pure: local results and corresponding term bindings are now
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subject to Hindley-Milner polymorphism (similar to ML); this
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accommodates incremental type-inference very nicely;
8283
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* Isar/Pure: new derived language element 'obtain' supports
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generalized existence reasoning;
8621
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   266
10003
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   267
* Isar/Pure: new calculational elements 'moreover' and 'ultimately'
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   268
support accumulation of results, without applying any rules yet;
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diff changeset
   269
useful to collect intermediate results without explicit name
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references, and for use with transitivity rules with more than 2
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premises;
8184
6b7ef9fc39da nat as names;
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* Isar/Pure: scalable support for case-analysis type proofs: new
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'case' language element refers to local contexts symbolically, as
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   275
produced by certain proof methods; internally, case names are attached
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   276
to theorems as "tags";
8440
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* Isar/Pure: theory command 'hide' removes declarations from
9330
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   279
class/type/const name spaces;
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10003
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* Isar/Pure: theory command 'defs' supports option "(overloaded)" to
9330
6861e3b00155 HOL: the disjoint sum is now "<+>" instead of "Plus";
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indicate potential overloading;
6861e3b00155 HOL: the disjoint sum is now "<+>" instead of "Plus";
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10003
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* Isar/Pure: changed syntax of local blocks from {{ }} to { };
8621
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10003
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* Isar/Pure: syntax of sorts made 'inner', i.e. have to write
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   287
"{a,b,c}" instead of {a,b,c};
9011
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10003
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* Isar/Pure now provides its own version of intro/elim/dest
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attributes; useful for building new logics, but beware of confusion
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   291
with the version in Provers/classical;
9612
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* Isar/Pure: the local context of (non-atomic) goals is provided via
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case name 'antecedent';
8440
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10003
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* Isar/Pure: removed obsolete 'transfer' attribute (transfer of thms
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   297
to the current context is now done automatically);
9383
c21fa1c48de0 * HOL: removed obsolete expand_if = split_if; theorems if_splits =
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10003
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* Isar/Pure: theory command 'method_setup' provides a simple interface
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   300
for definining proof methods in ML;
9612
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10003
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* Isar/Provers: intro/elim/dest attributes changed; renamed
9941
fe05af7ec816 renamed atts: rulify to rule_format, elimify to elim_format;
wenzelm
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   303
intro/intro!/intro!! flags to intro!/intro/intro? (INCOMPATIBILITY, in
fe05af7ec816 renamed atts: rulify to rule_format, elimify to elim_format;
wenzelm
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diff changeset
   304
most cases, one should have to change intro!! to intro? only);
fe05af7ec816 renamed atts: rulify to rule_format, elimify to elim_format;
wenzelm
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diff changeset
   305
replaced "delrule" by "rule del";
8283
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   306
10003
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diff changeset
   307
* Isar/Provers: new 'hypsubst' method, plain 'subst' method and
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   308
'symmetric' attribute (the latter supercedes [RS sym]);
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wenzelm
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diff changeset
   309
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
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   310
* Isar/Provers: splitter support (via 'split' attribute and 'simp'
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diff changeset
   311
method modifier); 'simp' method: 'only:' modifier removes loopers as
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
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diff changeset
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well (including splits);
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wenzelm
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   313
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
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diff changeset
   314
* Isar/Provers: Simplifier and Classical methods now support all kind
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diff changeset
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of modifiers used in the past, including 'cong', 'iff', etc.
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diff changeset
   316
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
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   317
* Isar/Provers: added 'fastsimp' and 'clarsimp' methods (combination
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   318
of Simplifier and Classical reasoner);
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diff changeset
   319
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
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diff changeset
   320
* Isar/HOL: new proof method 'cases' and improved version of 'induct'
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wenzelm
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diff changeset
   321
now support named cases; major packages (inductive, datatype, primrec,
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recdef) support case names and properly name parameters;
9612
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diff changeset
   323
10003
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diff changeset
   324
* Isar/HOL: new transitivity rules for substitution in inequalities --
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diff changeset
   325
monotonicity conditions are extracted to be proven at end of
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wenzelm
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diff changeset
   326
calculations;
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diff changeset
   327
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
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diff changeset
   328
* Isar/HOL: removed 'case_split' thm binding, should use 'cases' proof
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diff changeset
   329
method anyway;
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diff changeset
   330
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
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diff changeset
   331
* Isar/HOL: removed old expand_if = split_if; theorems if_splits =
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wenzelm
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diff changeset
   332
split_if split_if_asm; datatype package provides theorems foo.splits =
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
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diff changeset
   333
foo.split foo.split_asm for each datatype;
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wenzelm
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diff changeset
   334
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
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diff changeset
   335
* Isar/HOL: tuned inductive package, rename "intrs" to "intros"
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diff changeset
   336
(potential INCOMPATIBILITY), emulation of mk_cases feature for proof
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   337
scripts: new 'inductive_cases' command and 'ind_cases' method; (Note:
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   338
use "(cases (simplified))" method in proper proof texts);
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   339
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   340
* Isar/HOL: added global 'arith_split' attribute for 'arith' method;
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   341
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   342
* Isar: names of theorems etc. may be natural numbers as well;
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   343
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   344
* Isar: 'pr' command: optional arguments for goals_limit and
9724
2030c5d63741 * 'pr' command: optional argument for ProofContext.prems_limit;
wenzelm
parents: 9709
diff changeset
   345
ProofContext.prems_limit; no longer prints theory contexts, but only
2030c5d63741 * 'pr' command: optional argument for ProofContext.prems_limit;
wenzelm
parents: 9709
diff changeset
   346
proof states;
8487
5f3b0e02ec15 Isar: splitter support; improved diagnostics;
wenzelm
parents: 8440
diff changeset
   347
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   348
* Isar: diagnostic commands 'pr', 'thm', 'prop', 'term', 'typ' admit
8518
wenzelm
parents: 8487
diff changeset
   349
additional print modes to be specified; e.g. "pr(latex)" will print
wenzelm
parents: 8487
diff changeset
   350
proof state according to the Isabelle LaTeX style;
8487
5f3b0e02ec15 Isar: splitter support; improved diagnostics;
wenzelm
parents: 8440
diff changeset
   351
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   352
* Isar: improved support for emulating tactic scripts, including proof
9612
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   353
methods 'rule_tac' etc., 'cut_tac', 'thin_tac', 'subgoal_tac',
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   354
'rename_tac', 'rotate_tac', 'tactic', and 'case_tac' / 'induct_tac'
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   355
(for HOL datatypes);
8534
fdbabfbc3829 improved support for emulating tactic scripts;
wenzelm
parents: 8518
diff changeset
   356
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   357
* Isar: simplified (more robust) goal selection of proof methods: 1st
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   358
goal, all goals, or explicit goal specifier (tactic emulation); thus
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   359
'proof method scripts' have to be in depth-first order;
8673
987ea1a559d0 Isar: simplified (more robust) goal selection of proof methods;
wenzelm
parents: 8655
diff changeset
   360
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   361
* Isar: tuned 'let' syntax: replaced 'as' keyword by 'and';
8729
094dbd0fad0c * improved name spaces: ambiguous output is qualified; support for
wenzelm
parents: 8705
diff changeset
   362
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   363
* Isar: removed 'help' command, which hasn't been too helpful anyway;
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   364
should instead use individual commands for printing items
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   365
(print_commands, print_methods etc.);
9224
0da360494917 * Isar: removed 'help' command, which hasn't been too helpful anyway;
wenzelm
parents: 9198
diff changeset
   366
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   367
* Isar: added 'nothing' --- the empty list of theorems;
9239
b31c2132176a * added 'nothing' --- the empty list of theorems;
wenzelm
parents: 9229
diff changeset
   368
8184
6b7ef9fc39da nat as names;
wenzelm
parents: 8015
diff changeset
   369
8014
fdf1281a3d0c HOL changes
paulson
parents: 8007
diff changeset
   370
*** HOL ***
fdf1281a3d0c HOL changes
paulson
parents: 8007
diff changeset
   371
10080
8fb8c17d1cb5 HOL/MicroJava;
wenzelm
parents: 10065
diff changeset
   372
* HOL/MicroJava: formalization of a fragment of Java, together with a
8fb8c17d1cb5 HOL/MicroJava;
wenzelm
parents: 10065
diff changeset
   373
corresponding virtual machine and a specification of its bytecode
8fb8c17d1cb5 HOL/MicroJava;
wenzelm
parents: 10065
diff changeset
   374
verifier and a lightweight bytecode verifier, including proofs of
8fb8c17d1cb5 HOL/MicroJava;
wenzelm
parents: 10065
diff changeset
   375
type-safety; by Gerwin Klein, Tobias Nipkow, David von Oheimb, and
8fb8c17d1cb5 HOL/MicroJava;
wenzelm
parents: 10065
diff changeset
   376
Cornelia Pusch (see also the homepage of project Bali at
8fb8c17d1cb5 HOL/MicroJava;
wenzelm
parents: 10065
diff changeset
   377
http://isabelle.in.tum.de/Bali/);
8fb8c17d1cb5 HOL/MicroJava;
wenzelm
parents: 10065
diff changeset
   378
8518
wenzelm
parents: 8487
diff changeset
   379
* HOL/Algebra: new theory of rings and univariate polynomials, by
wenzelm
parents: 8487
diff changeset
   380
Clemens Ballarin;
8014
fdf1281a3d0c HOL changes
paulson
parents: 8007
diff changeset
   381
10157
6d3987f3aad9 * HOL/Lattice: fundamental concepts of lattice theory and order structures;
wenzelm
parents: 10137
diff changeset
   382
* HOL/NumberTheory: fundamental Theorem of Arithmetic, Chinese
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   383
Remainder Theorem, Fermat/Euler Theorem, Wilson's Theorem, by Thomas M
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   384
Rasmussen;
8570
63d4f3ea2e70 HOL/ex/Multiquote;
wenzelm
parents: 8566
diff changeset
   385
10157
6d3987f3aad9 * HOL/Lattice: fundamental concepts of lattice theory and order structures;
wenzelm
parents: 10137
diff changeset
   386
* HOL/Lattice: fundamental concepts of lattice theory and order
6d3987f3aad9 * HOL/Lattice: fundamental concepts of lattice theory and order structures;
wenzelm
parents: 10137
diff changeset
   387
structures, including duals, properties of bounds versus algebraic
6d3987f3aad9 * HOL/Lattice: fundamental concepts of lattice theory and order structures;
wenzelm
parents: 10137
diff changeset
   388
laws, lattice operations versus set-theoretic ones, the Knaster-Tarski
6d3987f3aad9 * HOL/Lattice: fundamental concepts of lattice theory and order structures;
wenzelm
parents: 10137
diff changeset
   389
Theorem for complete lattices etc.; may also serve as a demonstration
6d3987f3aad9 * HOL/Lattice: fundamental concepts of lattice theory and order structures;
wenzelm
parents: 10137
diff changeset
   390
for abstract algebraic reasoning using axiomatic type classes, and
6d3987f3aad9 * HOL/Lattice: fundamental concepts of lattice theory and order structures;
wenzelm
parents: 10137
diff changeset
   391
mathematics-style proof in Isabelle/Isar; by Markus Wenzel;
6d3987f3aad9 * HOL/Lattice: fundamental concepts of lattice theory and order structures;
wenzelm
parents: 10137
diff changeset
   392
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   393
* HOL/Prolog: a (bare-bones) implementation of Lambda-Prolog, by David
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   394
von Oheimb;
9542
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   395
10164
c240747082aa * HOL/IMPP: extension of IMP with local variables and mutually
wenzelm
parents: 10157
diff changeset
   396
* HOL/IMPP: extension of IMP with local variables and mutually
c240747082aa * HOL/IMPP: extension of IMP with local variables and mutually
wenzelm
parents: 10157
diff changeset
   397
recursive procedures, by David von Oheimb;
c240747082aa * HOL/IMPP: extension of IMP with local variables and mutually
wenzelm
parents: 10157
diff changeset
   398
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   399
* HOL/Lambda: converted into new-style theory and document;
9542
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   400
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   401
* HOL/ex/Multiquote: example of multiple nested quotations and
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   402
anti-quotations -- basically a generalized version of de-Bruijn
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   403
representation; very useful in avoiding lifting of operations;
8848
wenzelm
parents: 8832
diff changeset
   404
9612
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   405
* HOL/record: added general record equality rule to simpset; fixed
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   406
select-update simplification procedure to handle extended records as
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   407
well; admit "r" as field name;
9542
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   408
8967
00f18476ac15 overloading of 0
paulson
parents: 8925
diff changeset
   409
* HOL: 0 is now overloaded over the new sort "zero", allowing its use with
00f18476ac15 overloading of 0
paulson
parents: 8925
diff changeset
   410
other numeric types and also as the identity of groups, rings, etc.;
00f18476ac15 overloading of 0
paulson
parents: 8925
diff changeset
   411
00f18476ac15 overloading of 0
paulson
parents: 8925
diff changeset
   412
* HOL: new axclass plus_ac0 for addition with the AC-laws and 0 as identity.
00f18476ac15 overloading of 0
paulson
parents: 8925
diff changeset
   413
Types nat and int belong to this axclass;
00f18476ac15 overloading of 0
paulson
parents: 8925
diff changeset
   414
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   415
* HOL: greatly improved simplification involving numerals of type nat, int, real:
8788
518a5450ab6d simprocs
paulson
parents: 8736
diff changeset
   416
   (i + #8 + j) = Suc k simplifies to  #7 + (i + j) = k
8832
bcceda950cd0 more details
paulson
parents: 8788
diff changeset
   417
   i*j + k + j*#3*i     simplifies to  #4*(i*j) + k
bcceda950cd0 more details
paulson
parents: 8788
diff changeset
   418
  two terms #m*u and #n*u are replaced by #(m+n)*u
bcceda950cd0 more details
paulson
parents: 8788
diff changeset
   419
    (where #m, #n and u can implicitly be 1; this is simproc combine_numerals)
bcceda950cd0 more details
paulson
parents: 8788
diff changeset
   420
  and the term/formula #m*u+x ~~ #n*u+y simplifies simplifies to #(m-n)+x ~~ y
bcceda950cd0 more details
paulson
parents: 8788
diff changeset
   421
    or x ~~ #(n-m)+y, where ~~ is one of = < <= or - (simproc cancel_numerals);
8736
0bfd6678a5fa new simprocs for numerals of type "nat"
paulson
parents: 8729
diff changeset
   422
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   423
* HOL: meson_tac is available (previously in ex/meson.ML); it is a
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   424
powerful prover for predicate logic but knows nothing of clasets; see
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   425
ex/mesontest.ML and ex/mesontest2.ML for example applications;
9835
543d23cd1259 meson_tac
paulson
parents: 9814
diff changeset
   426
8848
wenzelm
parents: 8832
diff changeset
   427
* HOL: new version of "case_tac" subsumes both boolean case split and
8440
d66f0f14b1ca * HOL: exhaust_tac on datatypes superceded by new case_tac;
wenzelm
parents: 8425
diff changeset
   428
"exhaust_tac" on datatypes; INCOMPATIBILITY: exhaust_tac no longer
8518
wenzelm
parents: 8487
diff changeset
   429
exists, may define val exhaust_tac = case_tac for ad-hoc portability;
8440
d66f0f14b1ca * HOL: exhaust_tac on datatypes superceded by new case_tac;
wenzelm
parents: 8425
diff changeset
   430
8848
wenzelm
parents: 8832
diff changeset
   431
* HOL: simplification no longer dives into case-expressions: only the
10129
a62b275ac0f7 improved t.weak_case_cong text;
wenzelm
parents: 10103
diff changeset
   432
selector expression is simplified, but not the remaining arms; to
a62b275ac0f7 improved t.weak_case_cong text;
wenzelm
parents: 10103
diff changeset
   433
enable full simplification of case-expressions for datatype t, you may
a62b275ac0f7 improved t.weak_case_cong text;
wenzelm
parents: 10103
diff changeset
   434
remove t.weak_case_cong from the simpset, either globally (Delcongs
a62b275ac0f7 improved t.weak_case_cong text;
wenzelm
parents: 10103
diff changeset
   435
[thm"t.weak_case_cong"];) or locally (delcongs [...]).
8603
805910de7be0 *** empty log message ***
nipkow
parents: 8570
diff changeset
   436
8848
wenzelm
parents: 8832
diff changeset
   437
* HOL/recdef: the recursion equations generated by 'recdef' for
wenzelm
parents: 8832
diff changeset
   438
function 'f' are now called f.simps instead of f.rules; if all
wenzelm
parents: 8832
diff changeset
   439
termination conditions are proved automatically, these simplification
wenzelm
parents: 8832
diff changeset
   440
rules are added to the simpset, as in primrec; rules may be named
wenzelm
parents: 8832
diff changeset
   441
individually as well, resulting in a separate list of theorems for
wenzelm
parents: 8832
diff changeset
   442
each equation;
wenzelm
parents: 8832
diff changeset
   443
9489
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
   444
* HOL/While is a new theory that provides a while-combinator. It
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
   445
permits the definition of tail-recursive functions without the
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
   446
provision of a termination measure. The latter is necessary once the
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
   447
invariant proof rule for while is applied.
9457
966974a7a5b3 * HOL/While
nipkow
parents: 9437
diff changeset
   448
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   449
* HOL: new (overloaded) notation for the set of elements below/above
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   450
some element: {..u}, {..u(}, {l..}, {)l..}. See theory SetInterval.
8925
f4599af94b83 SetInterval
nipkow
parents: 8921
diff changeset
   451
8848
wenzelm
parents: 8832
diff changeset
   452
* HOL: theorems impI, allI, ballI bound as "strip";
wenzelm
parents: 8832
diff changeset
   453
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   454
* HOL: new tactic induct_thm_tac: thm -> string -> int -> tactic
9746
64b803edef39 *** empty log message ***
nipkow
parents: 9741
diff changeset
   455
induct_tac th "x1 ... xn" expects th to have a conclusion of the form
64b803edef39 *** empty log message ***
nipkow
parents: 9741
diff changeset
   456
P v1 ... vn and abbreviates res_inst_tac [("v1","x1"),...,("vn","xn")] th;
64b803edef39 *** empty log message ***
nipkow
parents: 9741
diff changeset
   457
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   458
* HOL/Real: "rabs" replaced by overloaded "abs" function;
9737
7aae235675dc *** empty log message ***
nipkow
parents: 9724
diff changeset
   459
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   460
* HOL: theory Sexp now in HOL/Induct examples (it used to be part of
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   461
main HOL, but was unused);
8626
nipkow
parents: 8621
diff changeset
   462
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   463
* HOL: fewer consts declared as global (e.g. have to refer to
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   464
"Lfp.lfp" instead of "lfp" internally; affects ML packages only);
8887
c0c583ce0b0b * HOL/ML: even fewer consts are declared as global (see theories Ord,
wenzelm
parents: 8848
diff changeset
   465
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   466
* HOL: tuned AST representation of nested pairs, avoiding bogus output
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   467
in case of overlap with user translations (e.g. judgements over
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   468
tuples); (note that the underlying logical represenation is still
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   469
bogus);
9349
d43669fb423d * tuned AST representation of nested pairs, avoiding bogus output in
wenzelm
parents: 9335
diff changeset
   470
8412
65f9089f6f71 cases_tac
nipkow
parents: 8392
diff changeset
   471
9542
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   472
*** ZF ***
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   473
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   474
* ZF: simplification automatically cancels common terms in arithmetic
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   475
expressions over nat and int;
9542
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   476
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   477
* ZF: new treatment of nat to minimize type-checking: all operators
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   478
coerce their operands to a natural number using the function natify,
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   479
making the algebraic laws unconditional;
9542
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   480
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   481
* ZF: as above, for int: operators coerce their operands to an integer
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   482
using the function intify;
9542
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   483
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   484
* ZF: the integer library now contains many of the usual laws for the
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   485
orderings, including $<=, and monotonicity laws for $+ and $*;
9542
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   486
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   487
* ZF: new example ZF/ex/NatSum to demonstrate integer arithmetic
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   488
simplification;
9388
0b039a3575eb // change; also moved entry for AddIffs
paulson
parents: 9383
diff changeset
   489
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   490
* FOL and ZF: AddIffs now available, giving theorems of the form P<->Q
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   491
to the simplifier and classical reasoner simultaneously;
9388
0b039a3575eb // change; also moved entry for AddIffs
paulson
parents: 9383
diff changeset
   492
0b039a3575eb // change; also moved entry for AddIffs
paulson
parents: 9383
diff changeset
   493
8358
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents: 8283
diff changeset
   494
*** General ***
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents: 8283
diff changeset
   495
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   496
* Provers: blast_tac now handles actual object-logic rules as
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   497
assumptions; note that auto_tac uses blast_tac internally as well;
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   498
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   499
* Provers: new functions rulify/rulify_no_asm: thm -> thm for turning
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   500
outer -->/All/Ball into ==>/!!; qed_spec_mp now uses rulify_no_asm;
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   501
9941
fe05af7ec816 renamed atts: rulify to rule_format, elimify to elim_format;
wenzelm
parents: 9937
diff changeset
   502
* Provers: delrules now handles destruct rules as well (no longer need
fe05af7ec816 renamed atts: rulify to rule_format, elimify to elim_format;
wenzelm
parents: 9937
diff changeset
   503
explicit make_elim);
fe05af7ec816 renamed atts: rulify to rule_format, elimify to elim_format;
wenzelm
parents: 9937
diff changeset
   504
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   505
* Provers: Blast_tac now warns of and ignores "weak elimination rules" e.g.
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   506
  [| inj ?f;          ?f ?x = ?f ?y; ?x = ?y ==> ?W |] ==> ?W
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   507
use instead the strong form,
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   508
  [| inj ?f; ~ ?W ==> ?f ?x = ?f ?y; ?x = ?y ==> ?W |] ==> ?W
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   509
in HOL, FOL and ZF the function cla_make_elim will create such rules
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   510
from destruct-rules;
9489
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
   511
9709
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   512
* Provers: Simplifier.easy_setup provides a fast path to basic
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   513
Simplifier setup for new object-logics;
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   514
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   515
* Pure: AST translation rules no longer require constant head on LHS;
9349
d43669fb423d * tuned AST representation of nested pairs, avoiding bogus output in
wenzelm
parents: 9335
diff changeset
   516
9709
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   517
* Pure: improved name spaces: ambiguous output is qualified; support
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   518
for hiding of names;
8729
094dbd0fad0c * improved name spaces: ambiguous output is qualified; support for
wenzelm
parents: 8705
diff changeset
   519
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   520
* system: smart setup of canonical ML_HOME, ISABELLE_INTERFACE, and
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   521
XSYMBOL_HOME; no longer need to do manual configuration in most
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   522
situations;
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   523
9709
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   524
* system: compression of ML heaps images may now be controlled via -c
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   525
option of isabelle and isatool usedir (currently only observed by
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   526
Poly/ML);
8358
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents: 8283
diff changeset
   527
9981
01a0c4772c18 system: isatool installfonts may handle X-Symbol fonts as well;
wenzelm
parents: 9971
diff changeset
   528
* system: isatool installfonts may handle X-Symbol fonts as well (very
01a0c4772c18 system: isatool installfonts may handle X-Symbol fonts as well;
wenzelm
parents: 9971
diff changeset
   529
useful for remote X11);
01a0c4772c18 system: isatool installfonts may handle X-Symbol fonts as well;
wenzelm
parents: 9971
diff changeset
   530
9709
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   531
* system: provide TAGS file for Isabelle sources;
9052
7db48fe85b05 provide TAGS file for Isabelle sources;
wenzelm
parents: 9028
diff changeset
   532
9288
06a55195741b infix 'OF' is a version of 'MRS' with more appropriate argument order;
wenzelm
parents: 9239
diff changeset
   533
* ML: infix 'OF' is a version of 'MRS' with more appropriate argument
06a55195741b infix 'OF' is a version of 'MRS' with more appropriate argument order;
wenzelm
parents: 9239
diff changeset
   534
order;
06a55195741b infix 'OF' is a version of 'MRS' with more appropriate argument order;
wenzelm
parents: 9239
diff changeset
   535
8994
803533fbb3ec * ML: renamed flags Syntax.trace_norm_ast to Syntax.trace_ast; global
wenzelm
parents: 8991
diff changeset
   536
* ML: renamed flags Syntax.trace_norm_ast to Syntax.trace_ast; global
803533fbb3ec * ML: renamed flags Syntax.trace_norm_ast to Syntax.trace_ast; global
wenzelm
parents: 8991
diff changeset
   537
timing flag supersedes proof_timing and Toplevel.trace;
803533fbb3ec * ML: renamed flags Syntax.trace_norm_ast to Syntax.trace_ast; global
wenzelm
parents: 8991
diff changeset
   538
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   539
* ML: new combinators |>> and |>>> for incremental transformations
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   540
with secondary results (e.g. certain theory extensions):
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   541
9330
6861e3b00155 HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents: 9288
diff changeset
   542
* ML: PureThy.add_defs gets additional argument to indicate potential
6861e3b00155 HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents: 9288
diff changeset
   543
overloading (usually false);
6861e3b00155 HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents: 9288
diff changeset
   544
10003
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   545
* ML: PureThy.add_thms/add_axioms/add_defs now return theorems as
bd2ef19a0275 cleaned up and prepared for Isabelle99-1;
wenzelm
parents: 9981
diff changeset
   546
results;
8440
d66f0f14b1ca * HOL: exhaust_tac on datatypes superceded by new case_tac;
wenzelm
parents: 8425
diff changeset
   547
8358
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents: 8283
diff changeset
   548
8015
wenzelm
parents: 8014
diff changeset
   549
7986
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   550
New in Isabelle99 (October 1999)
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   551
--------------------------------
4649
89ad3eb863a1 changed wrapper mechanism of classical reasoner
oheimb
parents: 4575
diff changeset
   552
5931
325300576da7 Finally removing "Compl" from HOL
paulson
parents: 5781
diff changeset
   553
*** Overview of INCOMPATIBILITIES (see below for more details) ***
325300576da7 Finally removing "Compl" from HOL
paulson
parents: 5781
diff changeset
   554
6922
f5c5b81b3f14 integer division
paulson
parents: 6795
diff changeset
   555
* HOL: The THEN and ELSE parts of conditional expressions (if P then x else y)
f5c5b81b3f14 integer division
paulson
parents: 6795
diff changeset
   556
are no longer simplified.  (This allows the simplifier to unfold recursive
f5c5b81b3f14 integer division
paulson
parents: 6795
diff changeset
   557
functional programs.)  To restore the old behaviour, declare
7215
wenzelm
parents: 7204
diff changeset
   558
wenzelm
parents: 7204
diff changeset
   559
    Delcongs [if_weak_cong];
6922
f5c5b81b3f14 integer division
paulson
parents: 6795
diff changeset
   560
6269
wenzelm
parents: 6259
diff changeset
   561
* HOL: Removed the obsolete syntax "Compl A"; use -A for set
wenzelm
parents: 6259
diff changeset
   562
complement;
5931
325300576da7 Finally removing "Compl" from HOL
paulson
parents: 5781
diff changeset
   563
6269
wenzelm
parents: 6259
diff changeset
   564
* HOL: the predicate "inj" is now defined by translation to "inj_on";
6174
paulson
parents: 6157
diff changeset
   565
7847
5a3fa0c4b215 Eliminated mutual_induct_tac.
berghofe
parents: 7805
diff changeset
   566
* HOL/datatype: mutual_induct_tac no longer exists --
5a3fa0c4b215 Eliminated mutual_induct_tac.
berghofe
parents: 7805
diff changeset
   567
  use induct_tac "x_1 ... x_n" instead of mutual_induct_tac ["x_1", ..., "x_n"]
5a3fa0c4b215 Eliminated mutual_induct_tac.
berghofe
parents: 7805
diff changeset
   568
6386
e9e8af97f48f HOL/typedef: fixed type inference for representing set;
wenzelm
parents: 6343
diff changeset
   569
* HOL/typedef: fixed type inference for representing set; type
e9e8af97f48f HOL/typedef: fixed type inference for representing set;
wenzelm
parents: 6343
diff changeset
   570
arguments now have to occur explicitly on the rhs as type constraints;
e9e8af97f48f HOL/typedef: fixed type inference for representing set;
wenzelm
parents: 6343
diff changeset
   571
6269
wenzelm
parents: 6259
diff changeset
   572
* ZF: The con_defs part of an inductive definition may no longer refer
wenzelm
parents: 6259
diff changeset
   573
to constants declared in the same theory;
6057
395ea7617554 *** empty log message ***
nipkow
parents: 6028
diff changeset
   574
6269
wenzelm
parents: 6259
diff changeset
   575
* HOL, ZF: the function mk_cases, generated by the inductive
wenzelm
parents: 6259
diff changeset
   576
definition package, has lost an argument.  To simplify its result, it
wenzelm
parents: 6259
diff changeset
   577
uses the default simpset instead of a supplied list of theorems.
6141
a6922171b396 removal of the (thm list) argument of mk_cases
paulson
parents: 6131
diff changeset
   578
7215
wenzelm
parents: 7204
diff changeset
   579
* HOL/List: the constructors of type list are now Nil and Cons;
wenzelm
parents: 7204
diff changeset
   580
7619
d78b8b103fd9 incompatibility solver
nipkow
parents: 7595
diff changeset
   581
* Simplifier: the type of the infix ML functions
8729
094dbd0fad0c * improved name spaces: ambiguous output is qualified; support for
wenzelm
parents: 8705
diff changeset
   582
        setSSolver addSSolver setSolver addSolver
7619
d78b8b103fd9 incompatibility solver
nipkow
parents: 7595
diff changeset
   583
is now  simpset * solver -> simpset  where `solver' is a new abstract type
d78b8b103fd9 incompatibility solver
nipkow
parents: 7595
diff changeset
   584
for packaging solvers. A solver is created via
8729
094dbd0fad0c * improved name spaces: ambiguous output is qualified; support for
wenzelm
parents: 8705
diff changeset
   585
        mk_solver: string -> (thm list -> int -> tactic) -> solver
7619
d78b8b103fd9 incompatibility solver
nipkow
parents: 7595
diff changeset
   586
where the string argument is only a comment.
6057
395ea7617554 *** empty log message ***
nipkow
parents: 6028
diff changeset
   587
7647
2ceddd91cd0a proper handling of dangling sort hypotheses (at last!);
wenzelm
parents: 7619
diff changeset
   588
6069
a99879bd9f13 if-then-else syntax for ZF
paulson
parents: 6064
diff changeset
   589
*** Proof tools ***
a99879bd9f13 if-then-else syntax for ZF
paulson
parents: 6064
diff changeset
   590
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   591
* Provers/Arith/fast_lin_arith.ML contains a functor for creating a
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   592
decision procedure for linear arithmetic. Currently it is used for
7593
wenzelm
parents: 7492
diff changeset
   593
types `nat', `int', and `real' in HOL (see below); it can, should and
wenzelm
parents: 7492
diff changeset
   594
will be instantiated for other types and logics as well.
6069
a99879bd9f13 if-then-else syntax for ZF
paulson
parents: 6064
diff changeset
   595
7324
6cb0d0202298 simplifier flex heads.
nipkow
parents: 7320
diff changeset
   596
* The simplifier now accepts rewrite rules with flexible heads, eg
6cb0d0202298 simplifier flex heads.
nipkow
parents: 7320
diff changeset
   597
     hom ?f ==> ?f(?x+?y) = ?f ?x + ?f ?y
6cb0d0202298 simplifier flex heads.
nipkow
parents: 7320
diff changeset
   598
  They are applied like any rule with a non-pattern lhs, i.e. by first-order
6cb0d0202298 simplifier flex heads.
nipkow
parents: 7320
diff changeset
   599
  matching.
6069
a99879bd9f13 if-then-else syntax for ZF
paulson
parents: 6064
diff changeset
   600
7593
wenzelm
parents: 7492
diff changeset
   601
6014
bfd4923b0957 locales
paulson
parents: 5973
diff changeset
   602
*** General ***
bfd4923b0957 locales
paulson
parents: 5973
diff changeset
   603
7986
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   604
* New Isabelle/Isar subsystem provides an alternative to traditional
7215
wenzelm
parents: 7204
diff changeset
   605
tactical theorem proving; together with the ProofGeneral/isar user
wenzelm
parents: 7204
diff changeset
   606
interface it offers an interactive environment for developing human
wenzelm
parents: 7204
diff changeset
   607
readable proof documents (Isar == Intelligible semi-automated
7886
8fa551e22e52 the settings environment is now statically scoped;
wenzelm
parents: 7863
diff changeset
   608
reasoning); for further information see isatool doc isar-ref,
7986
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   609
src/HOL/Isar_examples and http://isabelle.in.tum.de/Isar/
7886
8fa551e22e52 the settings environment is now statically scoped;
wenzelm
parents: 7863
diff changeset
   610
9612
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   611
* improved and simplified presentation of theories: better HTML markup
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   612
(including colors), graph views in several sizes; isatool usedir now
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   613
provides a proper interface for user theories (via -P option); actual
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   614
document preparation based on (PDF)LaTeX is available as well (for
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   615
new-style theories only); see isatool doc system for more information;
7215
wenzelm
parents: 7204
diff changeset
   616
7252
d3ed595dd772 replaced 'ProofGeneral' by 'Proof General';
wenzelm
parents: 7238
diff changeset
   617
* native support for Proof General, both for classic Isabelle and
7986
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   618
Isabelle/Isar;
7215
wenzelm
parents: 7204
diff changeset
   619
7791
wenzelm
parents: 7780
diff changeset
   620
* ML function thm_deps visualizes dependencies of theorems and lemmas,
wenzelm
parents: 7780
diff changeset
   621
using the graph browser tool;
wenzelm
parents: 7780
diff changeset
   622
6751
0e346c73828c Isabelle manuals now also available as PDF;
wenzelm
parents: 6671
diff changeset
   623
* Isabelle manuals now also available as PDF;
0e346c73828c Isabelle manuals now also available as PDF;
wenzelm
parents: 6671
diff changeset
   624
6449
d031cb5ea2fc loadpath replaced;
wenzelm
parents: 6420
diff changeset
   625
* theory loader rewritten from scratch (may not be fully
d031cb5ea2fc loadpath replaced;
wenzelm
parents: 6420
diff changeset
   626
bug-compatible); old loadpath variable has been replaced by show_path,
6671
wenzelm
parents: 6563
diff changeset
   627
add_path, del_path, reset_path functions; new operations such as
7593
wenzelm
parents: 7492
diff changeset
   628
update_thy, touch_thy, remove_thy, use/update_thy_only (see also
wenzelm
parents: 7492
diff changeset
   629
isatool doc ref);
6449
d031cb5ea2fc loadpath replaced;
wenzelm
parents: 6420
diff changeset
   630
7215
wenzelm
parents: 7204
diff changeset
   631
* improved isatool install: option -k creates KDE application icon,
wenzelm
parents: 7204
diff changeset
   632
option -p DIR installs standalone binaries;
wenzelm
parents: 7204
diff changeset
   633
wenzelm
parents: 7204
diff changeset
   634
* added ML_PLATFORM setting (useful for cross-platform installations);
wenzelm
parents: 7204
diff changeset
   635
more robust handling of platform specific ML images for SML/NJ;
wenzelm
parents: 7204
diff changeset
   636
7886
8fa551e22e52 the settings environment is now statically scoped;
wenzelm
parents: 7863
diff changeset
   637
* the settings environment is now statically scoped, i.e. it is never
7986
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   638
created again in sub-processes invoked from isabelle, isatool, or
7886
8fa551e22e52 the settings environment is now statically scoped;
wenzelm
parents: 7863
diff changeset
   639
Isabelle;
8fa551e22e52 the settings environment is now statically scoped;
wenzelm
parents: 7863
diff changeset
   640
7215
wenzelm
parents: 7204
diff changeset
   641
* path element specification '~~' refers to '$ISABELLE_HOME';
wenzelm
parents: 7204
diff changeset
   642
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   643
* in locales, the "assumes" and "defines" parts may be omitted if
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   644
empty;
5973
040f6d2af50d removed prs / prs_fn;
wenzelm
parents: 5931
diff changeset
   645
6269
wenzelm
parents: 6259
diff changeset
   646
* new print_mode "xsymbols" for extended symbol support (e.g. genuine
wenzelm
parents: 6259
diff changeset
   647
long arrows);
6259
488bdc1bd11a path element specification '~~' refers to '$ISABELLE_HOME';
wenzelm
parents: 6174
diff changeset
   648
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   649
* new print_mode "HTML";
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   650
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   651
* new flag show_tags controls display of tags of theorems (which are
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   652
basically just comments that may be attached by some tools);
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   653
6461
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   654
* Isamode 2.6 requires patch to accomodate change of Isabelle font
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   655
mode and goal output format:
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   656
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   657
diff -r Isamode-2.6/elisp/isa-load.el Isamode/elisp/isa-load.el
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   658
244c244
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   659
<       (list (isa-getenv "ISABELLE") "-msymbols" logic-name)
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   660
---
6533
wenzelm
parents: 6482
diff changeset
   661
>       (list (isa-getenv "ISABELLE") "-misabelle_font" "-msymbols" logic-name)
6461
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   662
diff -r Isabelle-2.6/elisp/isa-proofstate.el Isamode/elisp/isa-proofstate.el
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   663
181c181
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   664
< (defconst proofstate-proofstart-regexp "^Level [0-9]+$"
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   665
---
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   666
> (defconst proofstate-proofstart-regexp "^Level [0-9]+"
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   667
7450
e329ca03fd00 added bind_thms;
wenzelm
parents: 7444
diff changeset
   668
* function bind_thms stores lists of theorems (cf. bind_thm);
e329ca03fd00 added bind_thms;
wenzelm
parents: 7444
diff changeset
   669
7593
wenzelm
parents: 7492
diff changeset
   670
* new shorthand tactics ftac, eatac, datac, fatac;
wenzelm
parents: 7492
diff changeset
   671
wenzelm
parents: 7492
diff changeset
   672
* qed (and friends) now accept "" as result name; in that case the
7986
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   673
theorem is not stored, but proper checks and presentation of the
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   674
result still apply;
7593
wenzelm
parents: 7492
diff changeset
   675
7805
0ae9ddc36fe0 theorem database now also indexes constants "Trueprop", "all",
wenzelm
parents: 7791
diff changeset
   676
* theorem database now also indexes constants "Trueprop", "all",
0ae9ddc36fe0 theorem database now also indexes constants "Trueprop", "all",
wenzelm
parents: 7791
diff changeset
   677
"==>", "=="; thus thms_containing, findI etc. may retrieve more rules;
0ae9ddc36fe0 theorem database now also indexes constants "Trueprop", "all",
wenzelm
parents: 7791
diff changeset
   678
6028
1bfd52528bde *** empty log message ***
oheimb
parents: 6014
diff changeset
   679
6057
395ea7617554 *** empty log message ***
nipkow
parents: 6028
diff changeset
   680
*** HOL ***
395ea7617554 *** empty log message ***
nipkow
parents: 6028
diff changeset
   681
7215
wenzelm
parents: 7204
diff changeset
   682
** HOL arithmetic **
wenzelm
parents: 7204
diff changeset
   683
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   684
* There are now decision procedures for linear arithmetic over nat and
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   685
int:
6131
2d9e609abcdb More Arith.
nipkow
parents: 6070
diff changeset
   686
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   687
1. arith_tac copes with arbitrary formulae involving `=', `<', `<=',
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   688
`+', `-', `Suc', `min', `max' and numerical constants; other subterms
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   689
are treated as atomic; subformulae not involving type `nat' or `int'
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   690
are ignored; quantified subformulae are ignored unless they are
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   691
positive universal or negative existential. The tactic has to be
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   692
invoked by hand and can be a little bit slow. In particular, the
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   693
running time is exponential in the number of occurrences of `min' and
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   694
`max', and `-' on `nat'.
6131
2d9e609abcdb More Arith.
nipkow
parents: 6070
diff changeset
   695
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   696
2. fast_arith_tac is a cut-down version of arith_tac: it only takes
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   697
(negated) (in)equalities among the premises and the conclusion into
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   698
account (i.e. no compound formulae) and does not know about `min' and
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   699
`max', and `-' on `nat'. It is fast and is used automatically by the
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   700
simplifier.
6131
2d9e609abcdb More Arith.
nipkow
parents: 6070
diff changeset
   701
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   702
NB: At the moment, these decision procedures do not cope with mixed
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   703
nat/int formulae where the two parts interact, such as `m < n ==>
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   704
int(m) < int(n)'.
6028
1bfd52528bde *** empty log message ***
oheimb
parents: 6014
diff changeset
   705
7215
wenzelm
parents: 7204
diff changeset
   706
* HOL/Numeral provides a generic theory of numerals (encoded
7313
300487ddfba9 real numerals;
wenzelm
parents: 7300
diff changeset
   707
efficiently as bit strings); setup for types nat/int/real is in place;
7215
wenzelm
parents: 7204
diff changeset
   708
INCOMPATIBILITY: since numeral syntax is now polymorphic, rather than
wenzelm
parents: 7204
diff changeset
   709
int, existing theories and proof scripts may require a few additional
wenzelm
parents: 7204
diff changeset
   710
type constraints;
wenzelm
parents: 7204
diff changeset
   711
wenzelm
parents: 7204
diff changeset
   712
* integer division and remainder can now be performed on constant
wenzelm
parents: 7204
diff changeset
   713
arguments;
7157
paulson
parents: 7125
diff changeset
   714
7215
wenzelm
parents: 7204
diff changeset
   715
* many properties of integer multiplication, division and remainder
wenzelm
parents: 7204
diff changeset
   716
are now available;
6922
f5c5b81b3f14 integer division
paulson
parents: 6795
diff changeset
   717
7287
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   718
* An interface to the Stanford Validity Checker (SVC) is available through the
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   719
tactic svc_tac.  Propositional tautologies and theorems of linear arithmetic
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   720
are proved automatically.  SVC must be installed separately, and its results
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   721
must be TAKEN ON TRUST (Isabelle does not check the proofs, but tags any
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   722
invocation of the underlying oracle).  For SVC see
7444
ee17ad649c26 new SVC url
paulson
parents: 7420
diff changeset
   723
  http://verify.stanford.edu/SVC
6922
f5c5b81b3f14 integer division
paulson
parents: 6795
diff changeset
   724
7125
df7cf6e85501 HOL-Real target now builds an actual image;
wenzelm
parents: 7113
diff changeset
   725
* IsaMakefile: the HOL-Real target now builds an actual image;
df7cf6e85501 HOL-Real target now builds an actual image;
wenzelm
parents: 7113
diff changeset
   726
7215
wenzelm
parents: 7204
diff changeset
   727
wenzelm
parents: 7204
diff changeset
   728
** HOL misc **
wenzelm
parents: 7204
diff changeset
   729
7595
5f5d575ddac3 * HOL/Real/HahnBanach: the Hahn-Banach theorem for real vector spaces
wenzelm
parents: 7593
diff changeset
   730
* HOL/Real/HahnBanach: the Hahn-Banach theorem for real vector spaces
5f5d575ddac3 * HOL/Real/HahnBanach: the Hahn-Banach theorem for real vector spaces
wenzelm
parents: 7593
diff changeset
   731
(in Isabelle/Isar) -- by Gertrud Bauer;
5f5d575ddac3 * HOL/Real/HahnBanach: the Hahn-Banach theorem for real vector spaces
wenzelm
parents: 7593
diff changeset
   732
7691
b7e8277fa088 added BVC;
wenzelm
parents: 7647
diff changeset
   733
* HOL/BCV: generic model of bytecode verification, i.e. data-flow
b7e8277fa088 added BVC;
wenzelm
parents: 7647
diff changeset
   734
analysis for assembly languages with subtypes;
b7e8277fa088 added BVC;
wenzelm
parents: 7647
diff changeset
   735
6278
37b76155a49e Symbol.output subject to print mode;
wenzelm
parents: 6269
diff changeset
   736
* HOL/TLA (Lamport's Temporal Logic of Actions): major reorganization
37b76155a49e Symbol.output subject to print mode;
wenzelm
parents: 6269
diff changeset
   737
-- avoids syntactic ambiguities and treats state, transition, and
37b76155a49e Symbol.output subject to print mode;
wenzelm
parents: 6269
diff changeset
   738
temporal levels more uniformly; introduces INCOMPATIBILITIES due to
37b76155a49e Symbol.output subject to print mode;
wenzelm
parents: 6269
diff changeset
   739
changed syntax and (many) tactics;
37b76155a49e Symbol.output subject to print mode;
wenzelm
parents: 6269
diff changeset
   740
7791
wenzelm
parents: 7780
diff changeset
   741
* HOL/inductive: Now also handles more general introduction rules such
wenzelm
parents: 7780
diff changeset
   742
  as "ALL y. (y, x) : r --> y : acc r ==> x : acc r"; monotonicity
wenzelm
parents: 7780
diff changeset
   743
  theorems are now maintained within the theory (maintained via the
wenzelm
parents: 7780
diff changeset
   744
  "mono" attribute);
7780
099742c562aa Documented changes to HOL/inductive and function thm_deps.
berghofe
parents: 7691
diff changeset
   745
7238
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   746
* HOL/datatype: Now also handles arbitrarily branching datatypes
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   747
  (using function types) such as
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   748
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   749
  datatype 'a tree = Atom 'a | Branch "nat => 'a tree"
7047
d103b875ef1d Datatype package now handles arbitrarily branching datatypes.
berghofe
parents: 6925
diff changeset
   750
7326
a1555491a966 record_simproc;
wenzelm
parents: 7324
diff changeset
   751
* HOL/record: record_simproc (part of the default simpset) takes care
a1555491a966 record_simproc;
wenzelm
parents: 7324
diff changeset
   752
of selectors applied to updated records; record_split_tac is no longer
7327
wenzelm
parents: 7326
diff changeset
   753
part of the default claset; update_defs may now be removed from the
wenzelm
parents: 7326
diff changeset
   754
simpset in many cases; COMPATIBILITY: old behavior achieved by
7326
a1555491a966 record_simproc;
wenzelm
parents: 7324
diff changeset
   755
a1555491a966 record_simproc;
wenzelm
parents: 7324
diff changeset
   756
  claset_ref () := claset() addSWrapper record_split_wrapper;
a1555491a966 record_simproc;
wenzelm
parents: 7324
diff changeset
   757
  Delsimprocs [record_simproc]
a1555491a966 record_simproc;
wenzelm
parents: 7324
diff changeset
   758
6386
e9e8af97f48f HOL/typedef: fixed type inference for representing set;
wenzelm
parents: 6343
diff changeset
   759
* HOL/typedef: fixed type inference for representing set; type
e9e8af97f48f HOL/typedef: fixed type inference for representing set;
wenzelm
parents: 6343
diff changeset
   760
arguments now have to occur explicitly on the rhs as type constraints;
e9e8af97f48f HOL/typedef: fixed type inference for representing set;
wenzelm
parents: 6343
diff changeset
   761
7287
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   762
* HOL/recdef (TFL): 'congs' syntax now expects comma separated list of theorem
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   763
names rather than an ML expression;
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   764
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   765
* HOL/defer_recdef (TFL): like recdef but the well-founded relation can be
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   766
supplied later.  Program schemes can be defined, such as
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   767
    "While B C s = (if B s then While B C (C s) else s)"
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   768
where the well-founded relation can be chosen after B and C have been given.
6563
wenzelm
parents: 6533
diff changeset
   769
7215
wenzelm
parents: 7204
diff changeset
   770
* HOL/List: the constructors of type list are now Nil and Cons;
wenzelm
parents: 7204
diff changeset
   771
INCOMPATIBILITY: while [] and infix # syntax is still there, of
wenzelm
parents: 7204
diff changeset
   772
course, ML tools referring to List.list.op # etc. have to be adapted;
wenzelm
parents: 7204
diff changeset
   773
7238
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   774
* HOL_quantifiers flag superseded by "HOL" print mode, which is
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   775
disabled by default; run isabelle with option -m HOL to get back to
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   776
the original Gordon/HOL-style output;
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   777
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   778
* HOL/Ord.thy: new bounded quantifier syntax (input only): ALL x<y. P,
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   779
ALL x<=y. P, EX x<y. P, EX x<=y. P;
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   780
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   781
* HOL basic syntax simplified (more orthogonal): all variants of
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   782
All/Ex now support plain / symbolic / HOL notation; plain syntax for
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   783
Eps operator is provided as well: "SOME x. P[x]";
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   784
7320
e89fd7d0a624 Moved sum_case to theory HOL/Datatype.
berghofe
parents: 7313
diff changeset
   785
* HOL/Sum.thy: sum_case has been moved to HOL/Datatype;
7261
a141985d660b sum_case renamed to basic_sum_case;
wenzelm
parents: 7252
diff changeset
   786
7280
wenzelm
parents: 7261
diff changeset
   787
* HOL/Univ.thy: infix syntax <*>, <+>, <**>, <+> eliminated and made
wenzelm
parents: 7261
diff changeset
   788
thus available for user theories;
wenzelm
parents: 7261
diff changeset
   789
7300
8439bf404c28 * HOLCF/IOA/Sequents: renamed 'Cons' to 'Consq' to avoid clash with HOL/List;
wenzelm
parents: 7287
diff changeset
   790
* HOLCF/IOA/Sequents: renamed 'Cons' to 'Consq' to avoid clash with
8439bf404c28 * HOLCF/IOA/Sequents: renamed 'Cons' to 'Consq' to avoid clash with HOL/List;
wenzelm
parents: 7287
diff changeset
   791
HOL/List; hardly an INCOMPATIBILITY since '>>' syntax is used all the
8439bf404c28 * HOLCF/IOA/Sequents: renamed 'Cons' to 'Consq' to avoid clash with HOL/List;
wenzelm
parents: 7287
diff changeset
   792
time;
8439bf404c28 * HOLCF/IOA/Sequents: renamed 'Cons' to 'Consq' to avoid clash with HOL/List;
wenzelm
parents: 7287
diff changeset
   793
7986
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   794
* HOL: new tactic smp_tac: int -> int -> tactic, which applies spec
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   795
several times and then mp;
7492
44b333fb5b80 *** empty log message ***
oheimb
parents: 7450
diff changeset
   796
7215
wenzelm
parents: 7204
diff changeset
   797
7113
paulson
parents: 7047
diff changeset
   798
*** LK ***
paulson
parents: 7047
diff changeset
   799
7215
wenzelm
parents: 7204
diff changeset
   800
* the notation <<...>> is now available as a notation for sequences of
wenzelm
parents: 7204
diff changeset
   801
formulas;
7113
paulson
parents: 7047
diff changeset
   802
paulson
parents: 7047
diff changeset
   803
* the simplifier is now installed
paulson
parents: 7047
diff changeset
   804
8729
094dbd0fad0c * improved name spaces: ambiguous output is qualified; support for
wenzelm
parents: 8705
diff changeset
   805
* the axiom system has been generalized (thanks to Soren Heilmann)
7113
paulson
parents: 7047
diff changeset
   806
paulson
parents: 7047
diff changeset
   807
* the classical reasoner now has a default rule database
paulson
parents: 7047
diff changeset
   808
paulson
parents: 7047
diff changeset
   809
6064
0786b5afd8ee primrec, induct_tac
paulson
parents: 6063
diff changeset
   810
*** ZF ***
0786b5afd8ee primrec, induct_tac
paulson
parents: 6063
diff changeset
   811
0786b5afd8ee primrec, induct_tac
paulson
parents: 6063
diff changeset
   812
* new primrec section allows primitive recursive functions to be given
6269
wenzelm
parents: 6259
diff changeset
   813
directly (as in HOL) over datatypes and the natural numbers;
6064
0786b5afd8ee primrec, induct_tac
paulson
parents: 6063
diff changeset
   814
6269
wenzelm
parents: 6259
diff changeset
   815
* new tactics induct_tac and exhaust_tac for induction (or case
wenzelm
parents: 6259
diff changeset
   816
analysis) over datatypes and the natural numbers;
6064
0786b5afd8ee primrec, induct_tac
paulson
parents: 6063
diff changeset
   817
0786b5afd8ee primrec, induct_tac
paulson
parents: 6063
diff changeset
   818
* the datatype declaration of type T now defines the recursor T_rec;
0786b5afd8ee primrec, induct_tac
paulson
parents: 6063
diff changeset
   819
6141
a6922171b396 removal of the (thm list) argument of mk_cases
paulson
parents: 6131
diff changeset
   820
* simplification automatically does freeness reasoning for datatype
6269
wenzelm
parents: 6259
diff changeset
   821
constructors;
6141
a6922171b396 removal of the (thm list) argument of mk_cases
paulson
parents: 6131
diff changeset
   822
6269
wenzelm
parents: 6259
diff changeset
   823
* automatic type-inference, with AddTCs command to insert new
wenzelm
parents: 6259
diff changeset
   824
type-checking rules;
6155
e387d188d0ca ZF typechecking
paulson
parents: 6141
diff changeset
   825
6269
wenzelm
parents: 6259
diff changeset
   826
* datatype introduction rules are now added as Safe Introduction rules
wenzelm
parents: 6259
diff changeset
   827
to the claset;
6155
e387d188d0ca ZF typechecking
paulson
parents: 6141
diff changeset
   828
6269
wenzelm
parents: 6259
diff changeset
   829
* the syntax "if P then x else y" is now available in addition to
wenzelm
parents: 6259
diff changeset
   830
if(P,x,y);
wenzelm
parents: 6259
diff changeset
   831
6069
a99879bd9f13 if-then-else syntax for ZF
paulson
parents: 6064
diff changeset
   832
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   833
*** Internal programming interfaces ***
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   834
7919
35c18affc1d8 tuned simplifier trace output; new flag debug_simp
wenzelm
parents: 7886
diff changeset
   835
* tuned simplifier trace output; new flag debug_simp;
35c18affc1d8 tuned simplifier trace output; new flag debug_simp
wenzelm
parents: 7886
diff changeset
   836
7420
cba45c114f3b structures Vartab / Termtab (instances of TableFun);
wenzelm
parents: 7327
diff changeset
   837
* structures Vartab / Termtab (instances of TableFun) offer efficient
cba45c114f3b structures Vartab / Termtab (instances of TableFun);
wenzelm
parents: 7327
diff changeset
   838
tables indexed by indexname_ord / term_ord (compatible with aconv);
cba45c114f3b structures Vartab / Termtab (instances of TableFun);
wenzelm
parents: 7327
diff changeset
   839
6386
e9e8af97f48f HOL/typedef: fixed type inference for representing set;
wenzelm
parents: 6343
diff changeset
   840
* AxClass.axclass_tac lost the theory argument;
e9e8af97f48f HOL/typedef: fixed type inference for representing set;
wenzelm
parents: 6343
diff changeset
   841
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   842
* tuned current_goals_markers semantics: begin / end goal avoids
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   843
printing empty lines;
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   844
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   845
* removed prs and prs_fn hook, which was broken because it did not
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   846
include \n in its semantics, forcing writeln to add one
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   847
uncoditionally; replaced prs_fn by writeln_fn; consider std_output:
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   848
string -> unit if you really want to output text without newline;
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   849
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   850
* Symbol.output subject to print mode; INCOMPATIBILITY: defaults to
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   851
plain output, interface builders may have to enable 'isabelle_font'
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   852
mode to get Isabelle font glyphs as before;
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   853
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   854
* refined token_translation interface; INCOMPATIBILITY: output length
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   855
now of type real instead of int;
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   856
7196
c8d1002060e8 theory loader actions;
wenzelm
parents: 7157
diff changeset
   857
* theory loader actions may be traced via new ThyInfo.add_hook
c8d1002060e8 theory loader actions;
wenzelm
parents: 7157
diff changeset
   858
interface (see src/Pure/Thy/thy_info.ML); example application: keep
c8d1002060e8 theory loader actions;
wenzelm
parents: 7157
diff changeset
   859
your own database of information attached to *whole* theories -- as
c8d1002060e8 theory loader actions;
wenzelm
parents: 7157
diff changeset
   860
opposed to intra-theory data slots offered via TheoryDataFun;
c8d1002060e8 theory loader actions;
wenzelm
parents: 7157
diff changeset
   861
7647
2ceddd91cd0a proper handling of dangling sort hypotheses (at last!);
wenzelm
parents: 7619
diff changeset
   862
* proper handling of dangling sort hypotheses (at last!);
2ceddd91cd0a proper handling of dangling sort hypotheses (at last!);
wenzelm
parents: 7619
diff changeset
   863
Thm.strip_shyps and Drule.strip_shyps_warning take care of removing
2ceddd91cd0a proper handling of dangling sort hypotheses (at last!);
wenzelm
parents: 7619
diff changeset
   864
extra sort hypotheses that can be witnessed from the type signature;
7986
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   865
the force_strip_shyps flag is gone, any remaining shyps are simply
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   866
left in the theorem (with a warning issued by strip_shyps_warning);
7647
2ceddd91cd0a proper handling of dangling sort hypotheses (at last!);
wenzelm
parents: 7619
diff changeset
   867
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   868
6064
0786b5afd8ee primrec, induct_tac
paulson
parents: 6063
diff changeset
   869
5781
d37380544c39 tuned current_goals_markers;
wenzelm
parents: 5731
diff changeset
   870
New in Isabelle98-1 (October 1998)
d37380544c39 tuned current_goals_markers;
wenzelm
parents: 5731
diff changeset
   871
----------------------------------
d37380544c39 tuned current_goals_markers;
wenzelm
parents: 5731
diff changeset
   872
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   873
*** Overview of INCOMPATIBILITIES (see below for more details) ***
4842
0afcae75b34a *** empty log message ***
wenzelm
parents: 4838
diff changeset
   874
5726
wenzelm
parents: 5722
diff changeset
   875
* several changes of automated proof tools;
5373
wenzelm
parents: 5363
diff changeset
   876
5726
wenzelm
parents: 5722
diff changeset
   877
* HOL: major changes to the inductive and datatype packages, including
wenzelm
parents: 5722
diff changeset
   878
some minor incompatibilities of theory syntax;
5214
75c6392d1274 Adapted to new datatype package.
berghofe
parents: 5207
diff changeset
   879
5726
wenzelm
parents: 5722
diff changeset
   880
* HOL: renamed r^-1 to 'converse' from 'inverse'; 'inj_onto' is now
5217
wenzelm
parents: 5214
diff changeset
   881
called `inj_on';
5160
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
   882
5275
de5d5e5eb692 *** empty log message ***
nipkow
parents: 5267
diff changeset
   883
* HOL: removed duplicate thms in Arith:
de5d5e5eb692 *** empty log message ***
nipkow
parents: 5267
diff changeset
   884
  less_imp_add_less  should be replaced by  trans_less_add1
de5d5e5eb692 *** empty log message ***
nipkow
parents: 5267
diff changeset
   885
  le_imp_add_le      should be replaced by  trans_le_add1
5160
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
   886
5726
wenzelm
parents: 5722
diff changeset
   887
* HOL: unary minus is now overloaded (new type constraints may be
wenzelm
parents: 5722
diff changeset
   888
required);
5490
85855f65d0c6 From Compl(A) to -A
paulson
parents: 5475
diff changeset
   889
5726
wenzelm
parents: 5722
diff changeset
   890
* HOL and ZF: unary minus for integers is now #- instead of #~.  In
wenzelm
parents: 5722
diff changeset
   891
ZF, expressions such as n#-1 must be changed to n#- 1, since #-1 is
wenzelm
parents: 5722
diff changeset
   892
now taken as an integer constant.
5541
f8fb27db4bcd unary minus
paulson
parents: 5526
diff changeset
   893
5726
wenzelm
parents: 5722
diff changeset
   894
* Pure: ML function 'theory_of' renamed to 'theory';
5397
034ed25535b9 * Pure: ML function 'theory_of' replaced by 'theory';
wenzelm
parents: 5373
diff changeset
   895
5363
0cf15843b82f isatool install;
wenzelm
parents: 5332
diff changeset
   896
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   897
*** Proof tools ***
4880
312115d20c45 *** empty log message ***
nipkow
parents: 4879
diff changeset
   898
5657
1a6c9c6a3f8e 2. The simplifier now knows a little bit about nat-arithmetic.
nipkow
parents: 5651
diff changeset
   899
* Simplifier:
1a6c9c6a3f8e 2. The simplifier now knows a little bit about nat-arithmetic.
nipkow
parents: 5651
diff changeset
   900
  1. Asm_full_simp_tac is now more aggressive.
1a6c9c6a3f8e 2. The simplifier now knows a little bit about nat-arithmetic.
nipkow
parents: 5651
diff changeset
   901
     1. It will sometimes reorient premises if that increases their power to
1a6c9c6a3f8e 2. The simplifier now knows a little bit about nat-arithmetic.
nipkow
parents: 5651
diff changeset
   902
        simplify.
1a6c9c6a3f8e 2. The simplifier now knows a little bit about nat-arithmetic.
nipkow
parents: 5651
diff changeset
   903
     2. It does no longer proceed strictly from left to right but may also
1a6c9c6a3f8e 2. The simplifier now knows a little bit about nat-arithmetic.
nipkow
parents: 5651
diff changeset
   904
        rotate premises to achieve further simplification.
1a6c9c6a3f8e 2. The simplifier now knows a little bit about nat-arithmetic.
nipkow
parents: 5651
diff changeset
   905
     For compatibility reasons there is now Asm_lr_simp_tac which is like the
1a6c9c6a3f8e 2. The simplifier now knows a little bit about nat-arithmetic.
nipkow
parents: 5651
diff changeset
   906
     old Asm_full_simp_tac in that it does not rotate premises.
1a6c9c6a3f8e 2. The simplifier now knows a little bit about nat-arithmetic.
nipkow
parents: 5651
diff changeset
   907
  2. The simplifier now knows a little bit about nat-arithmetic.
4880
312115d20c45 *** empty log message ***
nipkow
parents: 4879
diff changeset
   908
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   909
* Classical reasoner: wrapper mechanism for the classical reasoner now
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   910
allows for selected deletion of wrappers, by introduction of names for
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   911
wrapper functionals.  This implies that addbefore, addSbefore,
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   912
addaltern, and addSaltern now take a pair (name, tactic) as argument,
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   913
and that adding two tactics with the same name overwrites the first
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   914
one (emitting a warning).
4824
df8fc4626a9e *** empty log message ***
oheimb
parents: 4806
diff changeset
   915
  type wrapper = (int -> tactic) -> (int -> tactic)
4649
89ad3eb863a1 changed wrapper mechanism of classical reasoner
oheimb
parents: 4575
diff changeset
   916
  setWrapper, setSWrapper, compWrapper and compSWrapper are replaced by
4824
df8fc4626a9e *** empty log message ***
oheimb
parents: 4806
diff changeset
   917
  addWrapper, addSWrapper: claset * (string * wrapper) -> claset
df8fc4626a9e *** empty log message ***
oheimb
parents: 4806
diff changeset
   918
  delWrapper, delSWrapper: claset *  string            -> claset
4649
89ad3eb863a1 changed wrapper mechanism of classical reasoner
oheimb
parents: 4575
diff changeset
   919
  getWrapper is renamed to appWrappers, getSWrapper to appSWrappers;
89ad3eb863a1 changed wrapper mechanism of classical reasoner
oheimb
parents: 4575
diff changeset
   920
5705
56f2030c46c6 tuned (all proofs are INSTABLE by David's definition of instability);
wenzelm
parents: 5671
diff changeset
   921
* Classical reasoner: addbefore/addSbefore now have APPEND/ORELSE
5726
wenzelm
parents: 5722
diff changeset
   922
semantics; addbefore now affects only the unsafe part of step_tac
wenzelm
parents: 5722
diff changeset
   923
etc.; this affects addss/auto_tac/force_tac, so EXISTING PROOFS MAY
wenzelm
parents: 5722
diff changeset
   924
FAIL, but proofs should be fixable easily, e.g. by replacing Auto_tac
wenzelm
parents: 5722
diff changeset
   925
by Force_tac;
5524
38f2a518a811 *** empty log message ***
oheimb
parents: 5490
diff changeset
   926
5726
wenzelm
parents: 5722
diff changeset
   927
* Classical reasoner: setwrapper to setWrapper and compwrapper to
wenzelm
parents: 5722
diff changeset
   928
compWrapper; added safe wrapper (and access functions for it);
5524
38f2a518a811 *** empty log message ***
oheimb
parents: 5490
diff changeset
   929
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   930
* HOL/split_all_tac is now much faster and fails if there is nothing
5726
wenzelm
parents: 5722
diff changeset
   931
to split.  Some EXISTING PROOFS MAY REQUIRE ADAPTION because the order
wenzelm
parents: 5722
diff changeset
   932
and the names of the automatically generated variables have changed.
wenzelm
parents: 5722
diff changeset
   933
split_all_tac has moved within claset() from unsafe wrappers to safe
wenzelm
parents: 5722
diff changeset
   934
wrappers, which means that !!-bound variables are split much more
wenzelm
parents: 5722
diff changeset
   935
aggressively, and safe_tac and clarify_tac now split such variables.
wenzelm
parents: 5722
diff changeset
   936
If this splitting is not appropriate, use delSWrapper "split_all_tac".
wenzelm
parents: 5722
diff changeset
   937
Note: the same holds for record_split_tac, which does the job of
wenzelm
parents: 5722
diff changeset
   938
split_all_tac for record fields.
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   939
5726
wenzelm
parents: 5722
diff changeset
   940
* HOL/Simplifier: Rewrite rules for case distinctions can now be added
wenzelm
parents: 5722
diff changeset
   941
permanently to the default simpset using Addsplits just like
wenzelm
parents: 5722
diff changeset
   942
Addsimps. They can be removed via Delsplits just like
wenzelm
parents: 5722
diff changeset
   943
Delsimps. Lower-case versions are also available.
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   944
5726
wenzelm
parents: 5722
diff changeset
   945
* HOL/Simplifier: The rule split_if is now part of the default
wenzelm
parents: 5722
diff changeset
   946
simpset. This means that the simplifier will eliminate all occurrences
wenzelm
parents: 5722
diff changeset
   947
of if-then-else in the conclusion of a goal. To prevent this, you can
wenzelm
parents: 5722
diff changeset
   948
either remove split_if completely from the default simpset by
wenzelm
parents: 5722
diff changeset
   949
`Delsplits [split_if]' or remove it in a specific call of the
wenzelm
parents: 5722
diff changeset
   950
simplifier using `... delsplits [split_if]'.  You can also add/delete
wenzelm
parents: 5722
diff changeset
   951
other case splitting rules to/from the default simpset: every datatype
wenzelm
parents: 5722
diff changeset
   952
generates suitable rules `split_t_case' and `split_t_case_asm' (where
wenzelm
parents: 5722
diff changeset
   953
t is the name of the datatype).
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   954
5726
wenzelm
parents: 5722
diff changeset
   955
* Classical reasoner / Simplifier combination: new force_tac (and
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   956
derivatives Force_tac, force) combines rewriting and classical
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   957
reasoning (and whatever other tools) similarly to auto_tac, but is
5726
wenzelm
parents: 5722
diff changeset
   958
aimed to solve the given subgoal completely.
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   959
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   960
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   961
*** General ***
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   962
5217
wenzelm
parents: 5214
diff changeset
   963
* new top-level commands `Goal' and `Goalw' that improve upon `goal'
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   964
and `goalw': the theory is no longer needed as an explicit argument -
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   965
the current theory context is used; assumptions are no longer returned
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   966
at the ML-level unless one of them starts with ==> or !!; it is
5217
wenzelm
parents: 5214
diff changeset
   967
recommended to convert to these new commands using isatool fixgoal
wenzelm
parents: 5214
diff changeset
   968
(backup your sources first!);
4842
0afcae75b34a *** empty log message ***
wenzelm
parents: 4838
diff changeset
   969
5217
wenzelm
parents: 5214
diff changeset
   970
* new top-level commands 'thm' and 'thms' for retrieving theorems from
5207
wenzelm
parents: 5160
diff changeset
   971
the current theory context, and 'theory' to lookup stored theories;
4806
79cc986bc4d7 bug fixes
paulson
parents: 4801
diff changeset
   972
5722
c669e2161b08 locales
paulson
parents: 5710
diff changeset
   973
* new theory section 'locale' for declaring constants, assumptions and
c669e2161b08 locales
paulson
parents: 5710
diff changeset
   974
definitions that have local scope;
c669e2161b08 locales
paulson
parents: 5710
diff changeset
   975
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   976
* new theory section 'nonterminals' for purely syntactic types;
4858
4b15e9e1b3a5 new theory section 'nonterminals';
wenzelm
parents: 4842
diff changeset
   977
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   978
* new theory section 'setup' for generic ML setup functions
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   979
(e.g. package initialization);
4869
f3d30c02c1db new theory section 'setup';
wenzelm
parents: 4858
diff changeset
   980
5131
dd4ac220b8b4 the distribution now includes Isabelle icons: see
wenzelm
parents: 5128
diff changeset
   981
* the distribution now includes Isabelle icons: see
dd4ac220b8b4 the distribution now includes Isabelle icons: see
wenzelm
parents: 5128
diff changeset
   982
lib/logo/isabelle-{small,tiny}.xpm;
dd4ac220b8b4 the distribution now includes Isabelle icons: see
wenzelm
parents: 5128
diff changeset
   983
5363
0cf15843b82f isatool install;
wenzelm
parents: 5332
diff changeset
   984
* isatool install - install binaries with absolute references to
0cf15843b82f isatool install;
wenzelm
parents: 5332
diff changeset
   985
ISABELLE_HOME/bin;
0cf15843b82f isatool install;
wenzelm
parents: 5332
diff changeset
   986
5572
53c6ea1e6d94 isatool logo;
wenzelm
parents: 5541
diff changeset
   987
* isatool logo -- create instances of the Isabelle logo (as EPS);
53c6ea1e6d94 isatool logo;
wenzelm
parents: 5541
diff changeset
   988
5407
b450fea6d70c * print mode 'emacs' reserved for Isamode;
wenzelm
parents: 5397
diff changeset
   989
* print mode 'emacs' reserved for Isamode;
b450fea6d70c * print mode 'emacs' reserved for Isamode;
wenzelm
parents: 5397
diff changeset
   990
5726
wenzelm
parents: 5722
diff changeset
   991
* support multiple print (ast) translations per constant name;
wenzelm
parents: 5722
diff changeset
   992
6925
8d4d45ec6a3d theorems involving oracles are now printed with a suffixed [!];
wenzelm
parents: 6922
diff changeset
   993
* theorems involving oracles are now printed with a suffixed [!];
8d4d45ec6a3d theorems involving oracles are now printed with a suffixed [!];
wenzelm
parents: 6922
diff changeset
   994
4711
75a9ef36b1fe removed pred;
wenzelm
parents: 4683
diff changeset
   995
4661
paulson
parents: 4655
diff changeset
   996
*** HOL ***
paulson
parents: 4655
diff changeset
   997
5710
wenzelm
parents: 5709
diff changeset
   998
* there is now a tutorial on Isabelle/HOL (do 'isatool doc tutorial');
5709
35b07f8e67b6 Tutorial
nipkow
parents: 5705
diff changeset
   999
5217
wenzelm
parents: 5214
diff changeset
  1000
* HOL/inductive package reorganized and improved: now supports mutual
5267
41a01176b9de disjointness
paulson
parents: 5251
diff changeset
  1001
definitions such as
5217
wenzelm
parents: 5214
diff changeset
  1002
wenzelm
parents: 5214
diff changeset
  1003
  inductive EVEN ODD
wenzelm
parents: 5214
diff changeset
  1004
    intrs
wenzelm
parents: 5214
diff changeset
  1005
      null "0 : EVEN"
wenzelm
parents: 5214
diff changeset
  1006
      oddI "n : EVEN ==> Suc n : ODD"
wenzelm
parents: 5214
diff changeset
  1007
      evenI "n : ODD ==> Suc n : EVEN"
wenzelm
parents: 5214
diff changeset
  1008
wenzelm
parents: 5214
diff changeset
  1009
new theorem list "elims" contains an elimination rule for each of the
wenzelm
parents: 5214
diff changeset
  1010
recursive sets; inductive definitions now handle disjunctive premises
wenzelm
parents: 5214
diff changeset
  1011
correctly (also ZF);
5214
75c6392d1274 Adapted to new datatype package.
berghofe
parents: 5207
diff changeset
  1012
5217
wenzelm
parents: 5214
diff changeset
  1013
INCOMPATIBILITIES: requires Inductive as an ancestor; component
wenzelm
parents: 5214
diff changeset
  1014
"mutual_induct" no longer exists - the induction rule is always
wenzelm
parents: 5214
diff changeset
  1015
contained in "induct";
wenzelm
parents: 5214
diff changeset
  1016
wenzelm
parents: 5214
diff changeset
  1017
wenzelm
parents: 5214
diff changeset
  1018
* HOL/datatype package re-implemented and greatly improved: now
5267
41a01176b9de disjointness
paulson
parents: 5251
diff changeset
  1019
supports mutually recursive datatypes such as
5217
wenzelm
parents: 5214
diff changeset
  1020
wenzelm
parents: 5214
diff changeset
  1021
  datatype
wenzelm
parents: 5214
diff changeset
  1022
    'a aexp = IF_THEN_ELSE ('a bexp) ('a aexp) ('a aexp)
wenzelm
parents: 5214
diff changeset
  1023
            | SUM ('a aexp) ('a aexp)
wenzelm
parents: 5214
diff changeset
  1024
            | DIFF ('a aexp) ('a aexp)
wenzelm
parents: 5214
diff changeset
  1025
            | NUM 'a
wenzelm
parents: 5214
diff changeset
  1026
  and
wenzelm
parents: 5214
diff changeset
  1027
    'a bexp = LESS ('a aexp) ('a aexp)
wenzelm
parents: 5214
diff changeset
  1028
            | AND ('a bexp) ('a bexp)
wenzelm
parents: 5214
diff changeset
  1029
            | OR ('a bexp) ('a bexp)
wenzelm
parents: 5214
diff changeset
  1030
5267
41a01176b9de disjointness
paulson
parents: 5251
diff changeset
  1031
as well as indirectly recursive datatypes such as
5214
75c6392d1274 Adapted to new datatype package.
berghofe
parents: 5207
diff changeset
  1032
5217
wenzelm
parents: 5214
diff changeset
  1033
  datatype
wenzelm
parents: 5214
diff changeset
  1034
    ('a, 'b) term = Var 'a
wenzelm
parents: 5214
diff changeset
  1035
                  | App 'b ((('a, 'b) term) list)
5214
75c6392d1274 Adapted to new datatype package.
berghofe
parents: 5207
diff changeset
  1036
5217
wenzelm
parents: 5214
diff changeset
  1037
The new tactic  mutual_induct_tac [<var_1>, ..., <var_n>] i  performs
wenzelm
parents: 5214
diff changeset
  1038
induction on mutually / indirectly recursive datatypes.
wenzelm
parents: 5214
diff changeset
  1039
wenzelm
parents: 5214
diff changeset
  1040
Primrec equations are now stored in theory and can be accessed via
wenzelm
parents: 5214
diff changeset
  1041
<function_name>.simps.
wenzelm
parents: 5214
diff changeset
  1042
wenzelm
parents: 5214
diff changeset
  1043
INCOMPATIBILITIES:
5214
75c6392d1274 Adapted to new datatype package.
berghofe
parents: 5207
diff changeset
  1044
5217
wenzelm
parents: 5214
diff changeset
  1045
  - Theories using datatypes must now have theory Datatype as an
wenzelm
parents: 5214
diff changeset
  1046
    ancestor.
wenzelm
parents: 5214
diff changeset
  1047
  - The specific <typename>.induct_tac no longer exists - use the
wenzelm
parents: 5214
diff changeset
  1048
    generic induct_tac instead.
5226
89934cd022a9 Replaced nat.exhaustion by nat.exhaust
berghofe
parents: 5217
diff changeset
  1049
  - natE has been renamed to nat.exhaust - use exhaust_tac
5217
wenzelm
parents: 5214
diff changeset
  1050
    instead of res_inst_tac ... natE. Note that the variable
5226
89934cd022a9 Replaced nat.exhaustion by nat.exhaust
berghofe
parents: 5217
diff changeset
  1051
    names in nat.exhaust differ from the names in natE, this
5217
wenzelm
parents: 5214
diff changeset
  1052
    may cause some "fragile" proofs to fail.
wenzelm
parents: 5214
diff changeset
  1053
  - The theorems split_<typename>_case and split_<typename>_case_asm
wenzelm
parents: 5214
diff changeset
  1054
    have been renamed to <typename>.split and <typename>.split_asm.
wenzelm
parents: 5214
diff changeset
  1055
  - Since default sorts of type variables are now handled correctly,
wenzelm
parents: 5214
diff changeset
  1056
    some datatype definitions may have to be annotated with explicit
wenzelm
parents: 5214
diff changeset
  1057
    sort constraints.
wenzelm
parents: 5214
diff changeset
  1058
  - Primrec definitions no longer require function name and type
wenzelm
parents: 5214
diff changeset
  1059
    of recursive argument.
5214
75c6392d1274 Adapted to new datatype package.
berghofe
parents: 5207
diff changeset
  1060
5217
wenzelm
parents: 5214
diff changeset
  1061
Consider using isatool fixdatatype to adapt your theories and proof
wenzelm
parents: 5214
diff changeset
  1062
scripts to the new package (backup your sources first!).
wenzelm
parents: 5214
diff changeset
  1063
wenzelm
parents: 5214
diff changeset
  1064
5726
wenzelm
parents: 5722
diff changeset
  1065
* HOL/record package: considerably improved implementation; now
wenzelm
parents: 5722
diff changeset
  1066
includes concrete syntax for record types, terms, updates; theorems
wenzelm
parents: 5722
diff changeset
  1067
for surjective pairing and splitting !!-bound record variables; proof
wenzelm
parents: 5722
diff changeset
  1068
support is as follows:
wenzelm
parents: 5722
diff changeset
  1069
wenzelm
parents: 5722
diff changeset
  1070
  1) standard conversions (selectors or updates applied to record
wenzelm
parents: 5722
diff changeset
  1071
constructor terms) are part of the standard simpset;
wenzelm
parents: 5722
diff changeset
  1072
wenzelm
parents: 5722
diff changeset
  1073
  2) inject equations of the form ((x, y) = (x', y')) == x=x' & y=y' are
wenzelm
parents: 5722
diff changeset
  1074
made part of standard simpset and claset via addIffs;
wenzelm
parents: 5722
diff changeset
  1075
wenzelm
parents: 5722
diff changeset
  1076
  3) a tactic for record field splitting (record_split_tac) is part of
wenzelm
parents: 5722
diff changeset
  1077
the standard claset (addSWrapper);
wenzelm
parents: 5722
diff changeset
  1078
wenzelm
parents: 5722
diff changeset
  1079
To get a better idea about these rules you may retrieve them via
wenzelm
parents: 5722
diff changeset
  1080
something like 'thms "foo.simps"' or 'thms "foo.iffs"', where "foo" is
wenzelm
parents: 5722
diff changeset
  1081
the name of your record type.
wenzelm
parents: 5722
diff changeset
  1082
wenzelm
parents: 5722
diff changeset
  1083
The split tactic 3) conceptually simplifies by the following rule:
wenzelm
parents: 5722
diff changeset
  1084
wenzelm
parents: 5722
diff changeset
  1085
  "(!!x. PROP ?P x) == (!!a b. PROP ?P (a, b))"
wenzelm
parents: 5722
diff changeset
  1086
wenzelm
parents: 5722
diff changeset
  1087
Thus any record variable that is bound by meta-all will automatically
wenzelm
parents: 5722
diff changeset
  1088
blow up into some record constructor term, consequently the
wenzelm
parents: 5722
diff changeset
  1089
simplifications of 1), 2) apply.  Thus force_tac, auto_tac etc. shall
wenzelm
parents: 5722
diff changeset
  1090
solve record problems automatically.
wenzelm
parents: 5722
diff changeset
  1091
5214
75c6392d1274 Adapted to new datatype package.
berghofe
parents: 5207
diff changeset
  1092
5125
463a0e9df5b5 reorganized the main HOL image;
wenzelm
parents: 5109
diff changeset
  1093
* reorganized the main HOL image: HOL/Integ and String loaded by
463a0e9df5b5 reorganized the main HOL image;
wenzelm
parents: 5109
diff changeset
  1094
default; theory Main includes everything;
463a0e9df5b5 reorganized the main HOL image;
wenzelm
parents: 5109
diff changeset
  1095
5650
38bda28c68a2 integer simprocs
paulson
parents: 5572
diff changeset
  1096
* automatic simplification of integer sums and comparisons, using cancellation;
38bda28c68a2 integer simprocs
paulson
parents: 5572
diff changeset
  1097
5526
e7617b57a3e6 *** empty log message ***
oheimb
parents: 5524
diff changeset
  1098
* added option_map_eq_Some and not_Some_eq to the default simpset and claset;
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1099
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1100
* added disj_not1 = "(~P | Q) = (P --> Q)" to the default simpset;
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1101
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1102
* many new identities for unions, intersections, set difference, etc.;
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1103
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1104
* expand_if, expand_split, expand_sum_case and expand_nat_case are now
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1105
called split_if, split_split, split_sum_case and split_nat_case (to go
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1106
with add/delsplits);
5125
463a0e9df5b5 reorganized the main HOL image;
wenzelm
parents: 5109
diff changeset
  1107
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1108
* HOL/Prod introduces simplification procedure unit_eq_proc rewriting
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1109
(?x::unit) = (); this is made part of the default simpset, which COULD
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1110
MAKE EXISTING PROOFS FAIL under rare circumstances (consider
5207
wenzelm
parents: 5160
diff changeset
  1111
'Delsimprocs [unit_eq_proc];' as last resort); also note that
wenzelm
parents: 5160
diff changeset
  1112
unit_abs_eta_conv is added in order to counter the effect of
wenzelm
parents: 5160
diff changeset
  1113
unit_eq_proc on (%u::unit. f u), replacing it by f rather than by
wenzelm
parents: 5160
diff changeset
  1114
%u.f();
5125
463a0e9df5b5 reorganized the main HOL image;
wenzelm
parents: 5109
diff changeset
  1115
5217
wenzelm
parents: 5214
diff changeset
  1116
* HOL/Fun INCOMPATIBILITY: `inj_onto' is now called `inj_on' (which
wenzelm
parents: 5214
diff changeset
  1117
makes more sense);
5109
b3d18eb3ac20 Adapted to new inductive definition package.
berghofe
parents: 5106
diff changeset
  1118
5475
410172655d64 equals0D
paulson
parents: 5428
diff changeset
  1119
* HOL/Set INCOMPATIBILITY: rule `equals0D' is now a well-formed destruct rule;
410172655d64 equals0D
paulson
parents: 5428
diff changeset
  1120
  It and 'sym RS equals0D' are now in the default  claset, giving automatic
410172655d64 equals0D
paulson
parents: 5428
diff changeset
  1121
  disjointness reasoning but breaking a few old proofs.
5267
41a01176b9de disjointness
paulson
parents: 5251
diff changeset
  1122
5217
wenzelm
parents: 5214
diff changeset
  1123
* HOL/Relation INCOMPATIBILITY: renamed the relational operator r^-1
wenzelm
parents: 5214
diff changeset
  1124
to 'converse' from 'inverse' (for compatibility with ZF and some
wenzelm
parents: 5214
diff changeset
  1125
literature);
5085
8e5a7942fdea simplification procedure unit_eq_proc rewrites (?x::unit) = ();
wenzelm
parents: 5077
diff changeset
  1126
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1127
* HOL/recdef can now declare non-recursive functions, with {} supplied as
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1128
the well-founded relation;
4838
196100237656 cleanup for split_all_tac as wrapper in claset()
oheimb
parents: 4835
diff changeset
  1129
5490
85855f65d0c6 From Compl(A) to -A
paulson
parents: 5475
diff changeset
  1130
* HOL/Set INCOMPATIBILITY: the complement of set A is now written -A instead of
85855f65d0c6 From Compl(A) to -A
paulson
parents: 5475
diff changeset
  1131
    Compl A.  The "Compl" syntax remains available as input syntax for this
85855f65d0c6 From Compl(A) to -A
paulson
parents: 5475
diff changeset
  1132
    release ONLY.
85855f65d0c6 From Compl(A) to -A
paulson
parents: 5475
diff changeset
  1133
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1134
* HOL/Update: new theory of function updates:
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1135
    f(a:=b) == %x. if x=a then b else f x
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1136
may also be iterated as in f(a:=b,c:=d,...);
5077
71043526295f * HOL/List: new function list_update written xs[i:=v] that updates the i-th
nipkow
parents: 5075
diff changeset
  1137
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1138
* HOL/Vimage: new theory for inverse image of a function, syntax f-``B;
4899
447d6b2956ba HOL/Update
paulson
parents: 4880
diff changeset
  1139
5282
80c75c862a8f *** empty log message ***
nipkow
parents: 5275
diff changeset
  1140
* HOL/List:
80c75c862a8f *** empty log message ***
nipkow
parents: 5275
diff changeset
  1141
  - new function list_update written xs[i:=v] that updates the i-th
80c75c862a8f *** empty log message ***
nipkow
parents: 5275
diff changeset
  1142
    list position. May also be iterated as in xs[i:=a,j:=b,...].
5428
5a6c4f666a25 Function 'upt'
nipkow
parents: 5407
diff changeset
  1143
  - new function `upt' written [i..j(] which generates the list
5a6c4f666a25 Function 'upt'
nipkow
parents: 5407
diff changeset
  1144
    [i,i+1,...,j-1], i.e. the upper bound is excluded. To include the upper
5a6c4f666a25 Function 'upt'
nipkow
parents: 5407
diff changeset
  1145
    bound write [i..j], which is a shorthand for [i..j+1(].
5282
80c75c862a8f *** empty log message ***
nipkow
parents: 5275
diff changeset
  1146
  - new lexicographic orderings and corresponding wellfoundedness theorems.
4779
paulson
parents: 4766
diff changeset
  1147
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1148
* HOL/Arith:
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1149
  - removed 'pred' (predecessor) function;
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1150
  - generalized some theorems about n-1;
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1151
  - many new laws about "div" and "mod";
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1152
  - new laws about greatest common divisors (see theory ex/Primes);
4766
9658aab68363 *** empty log message ***
oheimb
parents: 4747
diff changeset
  1153
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1154
* HOL/Relation: renamed the relational operator r^-1 "converse"
4842
0afcae75b34a *** empty log message ***
wenzelm
parents: 4838
diff changeset
  1155
instead of "inverse";
4711
75a9ef36b1fe removed pred;
wenzelm
parents: 4683
diff changeset
  1156
5651
ca45d6126c8a *** empty log message ***
nipkow
parents: 5650
diff changeset
  1157
* HOL/Induct/Multiset: a theory of multisets, including the wellfoundedness
ca45d6126c8a *** empty log message ***
nipkow
parents: 5650
diff changeset
  1158
  of the multiset ordering;
ca45d6126c8a *** empty log message ***
nipkow
parents: 5650
diff changeset
  1159
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1160
* directory HOL/Real: a construction of the reals using Dedekind cuts
5651
ca45d6126c8a *** empty log message ***
nipkow
parents: 5650
diff changeset
  1161
  (not included by default);
4835
f90a427d903f *** empty log message ***
nipkow
parents: 4828
diff changeset
  1162
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1163
* directory HOL/UNITY: Chandy and Misra's UNITY formalism;
4711
75a9ef36b1fe removed pred;
wenzelm
parents: 4683
diff changeset
  1164
5651
ca45d6126c8a *** empty log message ***
nipkow
parents: 5650
diff changeset
  1165
* directory HOL/Hoare: a new version of Hoare logic which permits many-sorted
ca45d6126c8a *** empty log message ***
nipkow
parents: 5650
diff changeset
  1166
  programs, i.e. different program variables may have different types.
ca45d6126c8a *** empty log message ***
nipkow
parents: 5650
diff changeset
  1167
5142
c56aa8b59dc0 new stac
paulson
parents: 5140
diff changeset
  1168
* calling (stac rew i) now fails if "rew" has no effect on the goal
c56aa8b59dc0 new stac
paulson
parents: 5140
diff changeset
  1169
  [previously, this check worked only if the rewrite rule was unconditional]
5308
paulson
parents: 5282
diff changeset
  1170
  Now rew can involve either definitions or equalities (either == or =).
5002
7b4c2a153738 * improved the theory data mechanism to support real encapsulation;
wenzelm
parents: 4981
diff changeset
  1171
5363
0cf15843b82f isatool install;
wenzelm
parents: 5332
diff changeset
  1172
4879
58656c6a3551 "let" is no longer restricted to FOL terms and allows any logical terms
paulson
parents: 4869
diff changeset
  1173
*** ZF ***
58656c6a3551 "let" is no longer restricted to FOL terms and allows any logical terms
paulson
parents: 4869
diff changeset
  1174
5332
paulson
parents: 5308
diff changeset
  1175
* theory Main includes everything; INCOMPATIBILITY: theory ZF.thy contains
paulson
parents: 5308
diff changeset
  1176
  only the theorems proved on ZF.ML;
5160
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
  1177
5475
410172655d64 equals0D
paulson
parents: 5428
diff changeset
  1178
* ZF INCOMPATIBILITY: rule `equals0D' is now a well-formed destruct rule;
410172655d64 equals0D
paulson
parents: 5428
diff changeset
  1179
  It and 'sym RS equals0D' are now in the default  claset, giving automatic
410172655d64 equals0D
paulson
parents: 5428
diff changeset
  1180
  disjointness reasoning but breaking a few old proofs.
5267
41a01176b9de disjointness
paulson
parents: 5251
diff changeset
  1181
5160
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
  1182
* ZF/Update: new theory of function updates
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
  1183
    with default rewrite rule  f(x:=y) ` z = if(z=x, y, f`z)
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
  1184
  may also be iterated as in f(a:=b,c:=d,...);
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
  1185
4879
58656c6a3551 "let" is no longer restricted to FOL terms and allows any logical terms
paulson
parents: 4869
diff changeset
  1186
* in  let x=t in u(x), neither t nor u(x) has to be an FOL term.
4649
89ad3eb863a1 changed wrapper mechanism of classical reasoner
oheimb
parents: 4575
diff changeset
  1187
5142
c56aa8b59dc0 new stac
paulson
parents: 5140
diff changeset
  1188
* calling (stac rew i) now fails if "rew" has no effect on the goal
c56aa8b59dc0 new stac
paulson
parents: 5140
diff changeset
  1189
  [previously, this check worked only if the rewrite rule was unconditional]
5308
paulson
parents: 5282
diff changeset
  1190
  Now rew can involve either definitions or equalities (either == or =).
5142
c56aa8b59dc0 new stac
paulson
parents: 5140
diff changeset
  1191
5160
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
  1192
* case_tac provided for compatibility with HOL
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
  1193
    (like the old excluded_middle_tac, but with subgoals swapped)
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
  1194
4842
0afcae75b34a *** empty log message ***
wenzelm
parents: 4838
diff changeset
  1195
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1196
*** Internal programming interfaces ***
5002
7b4c2a153738 * improved the theory data mechanism to support real encapsulation;
wenzelm
parents: 4981
diff changeset
  1197
5251
wenzelm
parents: 5226
diff changeset
  1198
* Pure: several new basic modules made available for general use, see
wenzelm
parents: 5226
diff changeset
  1199
also src/Pure/README;
5207
wenzelm
parents: 5160
diff changeset
  1200
5008
6f56d9650ee9 new type-safe user interface for theory data;
wenzelm
parents: 5002
diff changeset
  1201
* improved the theory data mechanism to support encapsulation (data
6f56d9650ee9 new type-safe user interface for theory data;
wenzelm
parents: 5002
diff changeset
  1202
kind name replaced by private Object.kind, acting as authorization
5373
wenzelm
parents: 5363
diff changeset
  1203
key); new type-safe user interface via functor TheoryDataFun; generic
wenzelm
parents: 5363
diff changeset
  1204
print_data function becomes basically useless;
5002
7b4c2a153738 * improved the theory data mechanism to support real encapsulation;
wenzelm
parents: 4981
diff changeset
  1205
5251
wenzelm
parents: 5226
diff changeset
  1206
* removed global_names compatibility flag -- all theory declarations
wenzelm
parents: 5226
diff changeset
  1207
are qualified by default;
wenzelm
parents: 5226
diff changeset
  1208
5085
8e5a7942fdea simplification procedure unit_eq_proc rewrites (?x::unit) = ();
wenzelm
parents: 5077
diff changeset
  1209
* module Pure/Syntax now offers quote / antiquote translation
8e5a7942fdea simplification procedure unit_eq_proc rewrites (?x::unit) = ();
wenzelm
parents: 5077
diff changeset
  1210
functions (useful for Hoare logic etc. with implicit dependencies);
5373
wenzelm
parents: 5363
diff changeset
  1211
see HOL/ex/Antiquote for an example use;
5085
8e5a7942fdea simplification procedure unit_eq_proc rewrites (?x::unit) = ();
wenzelm
parents: 5077
diff changeset
  1212
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1213
* Simplifier now offers conversions (asm_)(full_)rewrite: simpset ->
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1214
cterm -> thm;
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1215
5207
wenzelm
parents: 5160
diff changeset
  1216
* new tactical CHANGED_GOAL for checking that a tactic modifies a
wenzelm
parents: 5160
diff changeset
  1217
subgoal;
5142
c56aa8b59dc0 new stac
paulson
parents: 5140
diff changeset
  1218
5251
wenzelm
parents: 5226
diff changeset
  1219
* Display.print_goals function moved to Locale.print_goals;
wenzelm
parents: 5226
diff changeset
  1220
5731
f84dc3b811e9 current_goals_markers;
wenzelm
parents: 5726
diff changeset
  1221
* standard print function for goals supports current_goals_markers
f84dc3b811e9 current_goals_markers;
wenzelm
parents: 5726
diff changeset
  1222
variable for marking begin of proof, end of proof, start of goal; the
f84dc3b811e9 current_goals_markers;
wenzelm
parents: 5726
diff changeset
  1223
default is ("", "", ""); setting current_goals_markers := ("<proof>",
f84dc3b811e9 current_goals_markers;
wenzelm
parents: 5726
diff changeset
  1224
"</proof>", "<goal>") causes SGML like tagged proof state printing,
f84dc3b811e9 current_goals_markers;
wenzelm
parents: 5726
diff changeset
  1225
for example;
f84dc3b811e9 current_goals_markers;
wenzelm
parents: 5726
diff changeset
  1226
5002
7b4c2a153738 * improved the theory data mechanism to support real encapsulation;
wenzelm
parents: 4981
diff changeset
  1227
7b4c2a153738 * improved the theory data mechanism to support real encapsulation;
wenzelm
parents: 4981
diff changeset
  1228
4410
wenzelm
parents: 4388
diff changeset
  1229
New in Isabelle98 (January 1998)
wenzelm
parents: 4388
diff changeset
  1230
--------------------------------
wenzelm
parents: 4388
diff changeset
  1231
wenzelm
parents: 4388
diff changeset
  1232
*** Overview of INCOMPATIBILITIES (see below for more details) ***
wenzelm
parents: 4388
diff changeset
  1233
wenzelm
parents: 4388
diff changeset
  1234
* changed lexical syntax of terms / types: dots made part of long
wenzelm
parents: 4388
diff changeset
  1235
identifiers, e.g. "%x.x" no longer possible, should be "%x. x";
wenzelm
parents: 4388
diff changeset
  1236
wenzelm
parents: 4388
diff changeset
  1237
* simpset (and claset) reference variable replaced by functions
wenzelm
parents: 4388
diff changeset
  1238
simpset / simpset_ref;
wenzelm
parents: 4388
diff changeset
  1239
wenzelm
parents: 4388
diff changeset
  1240
* no longer supports theory aliases (via merge) and non-trivial
wenzelm
parents: 4388
diff changeset
  1241
implicit merge of thms' signatures;
wenzelm
parents: 4388
diff changeset
  1242
wenzelm
parents: 4388
diff changeset
  1243
* most internal names of constants changed due to qualified names;
wenzelm
parents: 4388
diff changeset
  1244
wenzelm
parents: 4388
diff changeset
  1245
* changed Pure/Sequence interface (see Pure/seq.ML);
wenzelm
parents: 4388
diff changeset
  1246
3454
40b1287347d7 removed;
wenzelm
parents: 3338
diff changeset
  1247
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1248
*** General Changes ***
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1249
4174
wenzelm
parents: 4154
diff changeset
  1250
* hierachically structured name spaces (for consts, types, axms, thms
3943
b6e0c90f3bf4 tuned qualified names;
wenzelm
parents: 3930
diff changeset
  1251
etc.); new lexical class 'longid' (e.g. Foo.bar.x) may render much of
4108
1610602a2964 isatool fixclasimp;
wenzelm
parents: 4070
diff changeset
  1252
old input syntactically incorrect (e.g. "%x.x"); COMPATIBILITY:
1610602a2964 isatool fixclasimp;
wenzelm
parents: 4070
diff changeset
  1253
isatool fixdots ensures space after dots (e.g. "%x. x"); set
4174
wenzelm
parents: 4154
diff changeset
  1254
long_names for fully qualified output names; NOTE: ML programs
wenzelm
parents: 4154
diff changeset
  1255
(special tactics, packages etc.) referring to internal names may have
wenzelm
parents: 4154
diff changeset
  1256
to be adapted to cope with fully qualified names; in case of severe
wenzelm
parents: 4154
diff changeset
  1257
backward campatibility problems try setting 'global_names' at compile
wenzelm
parents: 4154
diff changeset
  1258
time to have enrything declared within a flat name space; one may also
wenzelm
parents: 4154
diff changeset
  1259
fine tune name declarations in theories via the 'global' and 'local'
wenzelm
parents: 4154
diff changeset
  1260
section;
4108
1610602a2964 isatool fixclasimp;
wenzelm
parents: 4070
diff changeset
  1261
1610602a2964 isatool fixclasimp;
wenzelm
parents: 4070
diff changeset
  1262
* reimplemented the implicit simpset and claset using the new anytype
1610602a2964 isatool fixclasimp;
wenzelm
parents: 4070
diff changeset
  1263
data filed in signatures; references simpset:simpset ref etc. are
1610602a2964 isatool fixclasimp;
wenzelm
parents: 4070
diff changeset
  1264
replaced by functions simpset:unit->simpset and
1610602a2964 isatool fixclasimp;
wenzelm
parents: 4070
diff changeset
  1265
simpset_ref:unit->simpset ref; COMPATIBILITY: use isatool fixclasimp
1610602a2964 isatool fixclasimp;
wenzelm
parents: 4070
diff changeset
  1266
to patch your ML files accordingly;
3856
177c64693954 rearranged and added TLA
paulson
parents: 3851
diff changeset
  1267
3857
16198fde5af5 browser info;
wenzelm
parents: 3856
diff changeset
  1268
* HTML output now includes theory graph data for display with Java
16198fde5af5 browser info;
wenzelm
parents: 3856
diff changeset
  1269
applet or isatool browser; data generated automatically via isatool
3901
wenzelm
parents: 3871
diff changeset
  1270
usedir (see -i option, ISABELLE_USEDIR_OPTIONS);
3857
16198fde5af5 browser info;
wenzelm
parents: 3856
diff changeset
  1271
3856
177c64693954 rearranged and added TLA
paulson
parents: 3851
diff changeset
  1272
* defs may now be conditional; improved rewrite_goals_tac to handle
177c64693954 rearranged and added TLA
paulson
parents: 3851
diff changeset
  1273
conditional equations;
177c64693954 rearranged and added TLA
paulson
parents: 3851
diff changeset
  1274
4174
wenzelm
parents: 4154
diff changeset
  1275
* defs now admits additional type arguments, using TYPE('a) syntax;
wenzelm
parents: 4154
diff changeset
  1276
3901
wenzelm
parents: 3871
diff changeset
  1277
* theory aliases via merge (e.g. M=A+B+C) no longer supported, always
wenzelm
parents: 3871
diff changeset
  1278
creates a new theory node; implicit merge of thms' signatures is
4112
wenzelm
parents: 4108
diff changeset
  1279
restricted to 'trivial' ones; COMPATIBILITY: one may have to use
3901
wenzelm
parents: 3871
diff changeset
  1280
transfer:theory->thm->thm in (rare) cases;
wenzelm
parents: 3871
diff changeset
  1281
3968
ec138de716d9 improved handling of draft signatures / theories; draft thms (and
wenzelm
parents: 3964
diff changeset
  1282
* improved handling of draft signatures / theories; draft thms (and
ec138de716d9 improved handling of draft signatures / theories; draft thms (and
wenzelm
parents: 3964
diff changeset
  1283
ctyps, cterms) are automatically promoted to real ones;
ec138de716d9 improved handling of draft signatures / theories; draft thms (and
wenzelm
parents: 3964
diff changeset
  1284
3901
wenzelm
parents: 3871
diff changeset
  1285
* slightly changed interfaces for oracles: admit many per theory, named
wenzelm
parents: 3871
diff changeset
  1286
(e.g. oracle foo = mlfun), additional name argument for invoke_oracle;
wenzelm
parents: 3871
diff changeset
  1287
wenzelm
parents: 3871
diff changeset
  1288
* print_goals: optional output of const types (set show_consts and
wenzelm
parents: 3871
diff changeset
  1289
show_types);
3851
fe9932a7cd46 print_goals: optional output of const types (set show_consts);
wenzelm
parents: 3846
diff changeset
  1290
4388
wenzelm
parents: 4381
diff changeset
  1291
* improved output of warnings (###) and errors (***);
3697
c5833dfcc2cc Pure: fixed idt/idts vs. pttrn/pttrns syntactic categories;
wenzelm
parents: 3671
diff changeset
  1292
4178
e64ff1c1bc70 subgoal_tac displays a warning if the new subgoal has type variables
paulson
parents: 4174
diff changeset
  1293
* subgoal_tac displays a warning if the new subgoal has type variables;
e64ff1c1bc70 subgoal_tac displays a warning if the new subgoal has type variables
paulson
parents: 4174
diff changeset
  1294
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1295
* removed old README and Makefiles;
3697
c5833dfcc2cc Pure: fixed idt/idts vs. pttrn/pttrns syntactic categories;
wenzelm
parents: 3671
diff changeset
  1296
3856
177c64693954 rearranged and added TLA
paulson
parents: 3851
diff changeset
  1297
* replaced print_goals_ref hook by print_current_goals_fn and result_error_fn;
3670
9fea3562f8c7 replaced print_goals_ref hook by print_current_goals_fn and
wenzelm
parents: 3658
diff changeset
  1298
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1299
* removed obsolete init_pps and init_database;
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1300
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1301
* deleted the obsolete tactical STATE, which was declared by
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1302
    fun STATE tacfun st = tacfun st st;
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1303
4388
wenzelm
parents: 4381
diff changeset
  1304
* cd and use now support path variables, e.g. $ISABELLE_HOME, or ~
wenzelm
parents: 4381
diff changeset
  1305
(which abbreviates $HOME);
4269
a045600f0c98 cd, use etc. now support path variables;
wenzelm
parents: 4207
diff changeset
  1306
a045600f0c98 cd, use etc. now support path variables;
wenzelm
parents: 4207
diff changeset
  1307
* changed Pure/Sequence interface (see Pure/seq.ML); COMPATIBILITY:
a045600f0c98 cd, use etc. now support path variables;
wenzelm
parents: 4207
diff changeset
  1308
use isatool fixseq to adapt your ML programs (this works for fully
a045600f0c98 cd, use etc. now support path variables;
wenzelm
parents: 4207
diff changeset
  1309
qualified references to the Sequence structure only!);
a045600f0c98 cd, use etc. now support path variables;
wenzelm
parents: 4207
diff changeset
  1310
4381
wenzelm
parents: 4373
diff changeset
  1311
* use_thy no longer requires writable current directory; it always
wenzelm
parents: 4373
diff changeset
  1312
reloads .ML *and* .thy file, if either one is out of date;
4269
a045600f0c98 cd, use etc. now support path variables;
wenzelm
parents: 4207
diff changeset
  1313
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1314
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1315
*** Classical Reasoner ***
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1316
3744
wenzelm
parents: 3719
diff changeset
  1317
* Clarify_tac, clarify_tac, clarify_step_tac, Clarify_step_tac: new
wenzelm
parents: 3719
diff changeset
  1318
tactics that use classical reasoning to simplify a subgoal without
wenzelm
parents: 3719
diff changeset
  1319
splitting it into several subgoals;
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1320
3719
6a142dab2a08 Safe_tac; qed_spec_mp in FOL
paulson
parents: 3715
diff changeset
  1321
* Safe_tac: like safe_tac but uses the default claset;
6a142dab2a08 Safe_tac; qed_spec_mp in FOL
paulson
parents: 3715
diff changeset
  1322
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1323
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1324
*** Simplifier ***
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1325
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1326
* added simplification meta rules:
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1327
    (asm_)(full_)simplify: simpset -> thm -> thm;
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1328
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1329
* simplifier.ML no longer part of Pure -- has to be loaded by object
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1330
logics (again);
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1331
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1332
* added prems argument to simplification procedures;
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1333
4325
e72cba5af6c5 addsplits now in FOL, ZF too
paulson
parents: 4269
diff changeset
  1334
* HOL, FOL, ZF: added infix function `addsplits':
e72cba5af6c5 addsplits now in FOL, ZF too
paulson
parents: 4269
diff changeset
  1335
  instead of `<simpset> setloop (split_tac <thms>)'
e72cba5af6c5 addsplits now in FOL, ZF too
paulson
parents: 4269
diff changeset
  1336
  you can simply write `<simpset> addsplits <thms>'
e72cba5af6c5 addsplits now in FOL, ZF too
paulson
parents: 4269
diff changeset
  1337
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1338
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1339
*** Syntax ***
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1340
4174
wenzelm
parents: 4154
diff changeset
  1341
* TYPE('a) syntax for type reflection terms;
wenzelm
parents: 4154
diff changeset
  1342
3985
wenzelm
parents: 3982
diff changeset
  1343
* no longer handles consts with name "" -- declare as 'syntax' instead;
3856
177c64693954 rearranged and added TLA
paulson
parents: 3851
diff changeset
  1344
177c64693954 rearranged and added TLA
paulson
parents: 3851
diff changeset
  1345
* pretty printer: changed order of mixfix annotation preference (again!);
3846
6061fa463784 hierachically structured name spaces;
wenzelm
parents: 3822
diff changeset
  1346
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1347
* Pure: fixed idt/idts vs. pttrn/pttrns syntactic categories;
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1348
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1349
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1350
*** HOL ***
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1351
5726
wenzelm
parents: 5722
diff changeset
  1352
* HOL: there is a new splitter `split_asm_tac' that can be used e.g.
4189
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1353
  with `addloop' of the simplifier to faciliate case splitting in premises.
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1354
4035
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1355
* HOL/TLA: Stephan Merz's formalization of Lamport's Temporal Logic of Actions;
3985
wenzelm
parents: 3982
diff changeset
  1356
wenzelm
parents: 3982
diff changeset
  1357
* HOL/Auth: new protocol proofs including some for the Internet
4035
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1358
  protocol TLS;
3985
wenzelm
parents: 3982
diff changeset
  1359
4125
wenzelm
parents: 4123
diff changeset
  1360
* HOL/Map: new theory of `maps' a la VDM;
3982
2a903ba8d39e HOL/Map
nipkow
parents: 3968
diff changeset
  1361
4335
b0acd74da01d nat_cancel simprocs;
wenzelm
parents: 4325
diff changeset
  1362
* HOL/simplifier: simplification procedures nat_cancel_sums for
b0acd74da01d nat_cancel simprocs;
wenzelm
parents: 4325
diff changeset
  1363
cancelling out common nat summands from =, <, <= (in)equalities, or
b0acd74da01d nat_cancel simprocs;
wenzelm
parents: 4325
diff changeset
  1364
differences; simplification procedures nat_cancel_factor for
b0acd74da01d nat_cancel simprocs;
wenzelm
parents: 4325
diff changeset
  1365
cancelling common factor from =, <, <= (in)equalities over natural
4373
2f831a45d571 nat_cancel enabled by default;
wenzelm
parents: 4370
diff changeset
  1366
sums; nat_cancel contains both kinds of procedures, it is installed by
2f831a45d571 nat_cancel enabled by default;
wenzelm
parents: 4370
diff changeset
  1367
default in Arith.thy -- this COULD MAKE EXISTING PROOFS FAIL;
4335
b0acd74da01d nat_cancel simprocs;
wenzelm
parents: 4325
diff changeset
  1368
3580
04c6ae944b5e new simproc
nipkow
parents: 3579
diff changeset
  1369
* HOL/simplifier: terms of the form
4325
e72cba5af6c5 addsplits now in FOL, ZF too
paulson
parents: 4269
diff changeset
  1370
  `? x. P1(x) & ... & Pn(x) & x=t & Q1(x) & ... Qn(x)'  (or t=x)
3580
04c6ae944b5e new simproc
nipkow
parents: 3579
diff changeset
  1371
  are rewritten to
4035
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1372
  `P1(t) & ... & Pn(t) & Q1(t) & ... Qn(t)',
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1373
  and those of the form
4325
e72cba5af6c5 addsplits now in FOL, ZF too
paulson
parents: 4269
diff changeset
  1374
  `! x. P1(x) & ... & Pn(x) & x=t & Q1(x) & ... Qn(x) --> R(x)'  (or t=x)
4035
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1375
  are rewritten to
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1376
  `P1(t) & ... & Pn(t) & Q1(t) & ... Qn(t) --> R(t)',
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1377
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1378
* HOL/datatype
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1379
  Each datatype `t' now comes with a theorem `split_t_case' of the form
3580
04c6ae944b5e new simproc
nipkow
parents: 3579
diff changeset
  1380
4035
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1381
  P(t_case f1 ... fn x) =
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1382
     ( (!y1 ... ym1. x = C1 y1 ... ym1 --> P(f1 y1 ... ym1)) &
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1383
        ...
4189
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1384
       (!y1 ... ymn. x = Cn y1 ... ymn --> P(f1 y1 ... ymn))
4035
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1385
     )
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1386
4930
89271bc4e7ed extended addsplits and delsplits to handle also split rules for assumptions
oheimb
parents: 4915
diff changeset
  1387
  and a theorem `split_t_case_asm' of the form
4189
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1388
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1389
  P(t_case f1 ... fn x) =
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1390
    ~( (? y1 ... ym1. x = C1 y1 ... ym1 & ~P(f1 y1 ... ym1)) |
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1391
        ...
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1392
       (? y1 ... ymn. x = Cn y1 ... ymn & ~P(f1 y1 ... ymn))
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1393
     )
4930
89271bc4e7ed extended addsplits and delsplits to handle also split rules for assumptions
oheimb
parents: 4915
diff changeset
  1394
  which can be added to a simpset via `addsplits'. The existing theorems
89271bc4e7ed extended addsplits and delsplits to handle also split rules for assumptions
oheimb
parents: 4915
diff changeset
  1395
  expand_list_case and expand_option_case have been renamed to
89271bc4e7ed extended addsplits and delsplits to handle also split rules for assumptions
oheimb
parents: 4915
diff changeset
  1396
  split_list_case and split_option_case.
4189
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1397
4361
c77a484e4f95 pred -> -1
nipkow
parents: 4357
diff changeset
  1398
* HOL/Arithmetic:
c77a484e4f95 pred -> -1
nipkow
parents: 4357
diff changeset
  1399
  - `pred n' is automatically converted to `n-1'.
c77a484e4f95 pred -> -1
nipkow
parents: 4357
diff changeset
  1400
    Users are strongly encouraged not to use `pred' any longer,
c77a484e4f95 pred -> -1
nipkow
parents: 4357
diff changeset
  1401
    because it will disappear altogether at some point.
c77a484e4f95 pred -> -1
nipkow
parents: 4357
diff changeset
  1402
  - Users are strongly encouraged to write "0 < n" rather than
c77a484e4f95 pred -> -1
nipkow
parents: 4357
diff changeset
  1403
    "n ~= 0". Theorems and proof tools have been modified towards this
c77a484e4f95 pred -> -1
nipkow
parents: 4357
diff changeset
  1404
    `standard'.
4357
b852e2d2a39a n ~= 0 should become 0 < n
nipkow
parents: 4335
diff changeset
  1405
4502
337c073de95e nth -> !
nipkow
parents: 4410
diff changeset
  1406
* HOL/Lists:
337c073de95e nth -> !
nipkow
parents: 4410
diff changeset
  1407
  the function "set_of_list" has been renamed "set" (and its theorems too);
337c073de95e nth -> !
nipkow
parents: 4410
diff changeset
  1408
  the function "nth" now takes its arguments in the reverse order and
337c073de95e nth -> !
nipkow
parents: 4410
diff changeset
  1409
  has acquired the infix notation "!" as in "xs!n".
3570
d3662f90c453 set_of_list -> set
paulson
parents: 3567
diff changeset
  1410
4154
17a3a2c5a35f UNIV & UNION1
paulson
parents: 4125
diff changeset
  1411
* HOL/Set: UNIV is now a constant and is no longer translated to Compl{};
17a3a2c5a35f UNIV & UNION1
paulson
parents: 4125
diff changeset
  1412
17a3a2c5a35f UNIV & UNION1
paulson
parents: 4125
diff changeset
  1413
* HOL/Set: The operator (UN x.B x) now abbreviates (UN x:UNIV. B x) and its
17a3a2c5a35f UNIV & UNION1
paulson
parents: 4125
diff changeset
  1414
  specialist theorems (like UN1_I) are gone.  Similarly for (INT x.B x);
17a3a2c5a35f UNIV & UNION1
paulson
parents: 4125
diff changeset
  1415
4575
e59cf7d816fe HOL/record;
wenzelm
parents: 4502
diff changeset
  1416
* HOL/record: extensible records with schematic structural subtyping
e59cf7d816fe HOL/record;
wenzelm
parents: 4502
diff changeset
  1417
(single inheritance); EXPERIMENTAL version demonstrating the encoding,
e59cf7d816fe HOL/record;
wenzelm
parents: 4502
diff changeset
  1418
still lacks various theorems and concrete record syntax;
e59cf7d816fe HOL/record;
wenzelm
parents: 4502
diff changeset
  1419
4125
wenzelm
parents: 4123
diff changeset
  1420
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1421
*** HOLCF ***
3535
19bd6c8274c4 defs may now be conditional;
wenzelm
parents: 3511
diff changeset
  1422
4125
wenzelm
parents: 4123
diff changeset
  1423
* removed "axioms" and "generated by" sections;
wenzelm
parents: 4123
diff changeset
  1424
4123
9600dd68d35b *** empty log message ***
oheimb
parents: 4112
diff changeset
  1425
* replaced "ops" section by extended "consts" section, which is capable of
4125
wenzelm
parents: 4123
diff changeset
  1426
  handling the continuous function space "->" directly;