NEWS
author paulson
Tue, 05 Sep 2000 10:11:02 +0200
changeset 9835 543d23cd1259
parent 9814 aef1f83cf8a6
child 9871 53e2a8bce258
permissions -rw-r--r--
meson_tac
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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aef1f83cf8a6 * HOL/Lambda: converted into new-style theory and document;
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Isabelle NEWS -- history user-relevant changes
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==============================================
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New in this Isabelle version
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----------------------------
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*** Overview of INCOMPATIBILITIES (see below for more details) ***
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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: 0 is now overloaded, so the type constraint ::nat may sometimes be
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needed;
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* HOL: the constant for f``x is now "image" 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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* HOL: exhaust_tac on datatypes superceded by new generic case_tac;
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* HOL: simplification no longer dives into case-expressions;
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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: theory Sexp now in HOL/Induct examples (it used to be part of
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main HOL, but was unused); should better use HOL's datatype package
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anyway;
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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/Real: "rabs" replaced by overloaded "abs" function;
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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, ZF: syntax for quotienting wrt an equivalence relation changed from
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  A/r to A//r;
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* ZF: new treatment of arithmetic (nat & int) may break some old proofs;
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* Isar/Provers: intro/elim/dest attributes: changed
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intro/intro!/intro!!  flags to intro!/intro/intro? (in most cases, one
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should have to change intro!! to intro? only);
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* Isar: changed syntax of local blocks from {{ }} to { };
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* Isar: renamed 'RS' attribute to 'THEN';
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* Isar/HOL: renamed "intrs" to "intros" in inductive definitions;
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* Provers: strengthened force_tac by using new first_best_tac;
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* Provers: Blast_tac now warns of and ignores "weak elimination rules" e.g.
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  [| inj ?f;          ?f ?x = ?f ?y; ?x = ?y ==> ?W |] ==> ?W
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use instead the strong form,
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  [| inj ?f; ~ ?W ==> ?f ?x = ?f ?y; ?x = ?y ==> ?W |] ==> ?W
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In HOL, FOL and ZF the function cla_make_elim will create such rules
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from destruct-rules;
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* Provers: safe_asm_full_simp_tac is no longer in the simplifier signature. Use
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  val safe_asm_full_simp_tac = generic_simp_tac true (true,true,true);
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  if required.
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* ML: renamed flags Syntax.trace_norm_ast to Syntax.trace_ast; global
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timing flag supersedes proof_timing and Toplevel.trace;
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* ML: PureThy.add_thms/add_axioms/add_defs return theorems as well;
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* ML: PureThy.add_defs gets additional argument to indicate potential
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overloading (usually false);
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* LaTeX: several changes of isabelle.sty;
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*** Document preparation ***
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* formal comments (text blocks etc.) in new-style theories may now
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contain antiquotations of thm/prop/term/typ/text to be presented
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according to latex print mode; concrete syntax is like this:
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@{term[show_types] "f(x) = a + x"};
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* isatool mkdir provides easy setup of Isabelle session directories,
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including proper document sources;
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* generated LaTeX sources are now deleted after successful run
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(isatool document -c); may retain a copy somewhere else via -D option
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of isatool usedir;
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* isatool usedir -D now lets isatool latex -o sty update the Isabelle
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style files, achieving self-contained LaTeX sources;
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* old-style theories now produce (crude) LaTeX output as well;
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* browser info session directories are now self-contained (may be put
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on WWW server seperately); improved graphs of nested sessions; removed
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graph for 'all sessions';
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* several improvements in isabelle.sty; \isabellestyle{it} produces
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near math mode output; \isamarkupheader is now \section by default;
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*** Isar ***
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* Pure: local results and corresponding term bindings are now subject
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to Hindley-Milner polymorphism (similar to ML); this accommodates
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incremental type-inference nicely;
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* Pure: new derived language element 'obtain' supports generalized
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existence reasoning;
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* Pure: new calculational elements 'moreover' and 'ultimately' support
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accumulation of results, without applying any rules yet;
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* Pure: scalable support for case-analysis type proofs: new 'case'
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language element refers to local contexts symbolically, as produced by
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certain proof methods; internally, case names are attached to theorems
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as "tags";
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* Pure: theory command 'hide' removes declarations from
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class/type/const name spaces;
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* Pure: theory command 'defs' supports option "(overloaded)" to
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indicate potential overloading;
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* Pure: changed syntax of local blocks from {{ }} to { };
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* Pure: renamed 'RS' attribute to 'THEN';
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* Pure: syntax of sorts made 'inner', i.e. have to write "{a, b, c}"
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instead of {a, b, c};
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* Pure now provides its own version of intro/elim/dest attributes;
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useful for building new logics, but beware of confusion with the
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version in Provers/classical;
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* Pure: the local context of (non-atomic) goals is provided via case
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name 'antecedent';
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* Pure: removed obsolete 'transfer' attribute (transfer of thms to the
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current context is now done automatically);
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* Pure: theory command 'method_setup' provides a simple interface for
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definining proof methods in ML;
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* Provers: 'simp' method now supports 'cong' modifiers;
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
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   156
9612
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* Provers: hypsubst support; also plain subst and symmetric attribute
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   158
(the latter supercedes [RS sym]);
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   159
8487
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* Provers: splitter support (via 'split' attribute and 'simp' method
5f3b0e02ec15 Isar: splitter support; improved diagnostics;
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   161
modifier); 'simp' method: 'only:' modifier removes loopers as well
5f3b0e02ec15 Isar: splitter support; improved diagnostics;
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   162
(including splits);
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diff changeset
   163
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* Provers: added 'fastsimp' and 'clarsimp' methods (combination of
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   165
Simplifier and Classical reasoner);
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   166
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   167
* Provers: added 'arith_split' attribute;
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diff changeset
   168
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* HOL: new proof method 'cases' and improved version of 'induct' now
d66f0f14b1ca * HOL: exhaust_tac on datatypes superceded by new case_tac;
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support named cases; major packages (inductive, datatype, primrec,
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recdef) support case names and properly name parameters;
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d66f0f14b1ca * HOL: exhaust_tac on datatypes superceded by new case_tac;
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* HOL: removed 'case_split' thm binding, should use 'cases' proof
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diff changeset
   174
method anyway;
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   175
9383
c21fa1c48de0 * HOL: removed obsolete expand_if = split_if; theorems if_splits =
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   176
* HOL: removed obsolete expand_if = split_if; theorems if_splits =
c21fa1c48de0 * HOL: removed obsolete expand_if = split_if; theorems if_splits =
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split_if split_if_asm; datatype package provides theorems foo.splits =
c21fa1c48de0 * HOL: removed obsolete expand_if = split_if; theorems if_splits =
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   178
foo.split foo.split_asm for each datatype;
c21fa1c48de0 * HOL: removed obsolete expand_if = split_if; theorems if_splits =
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   179
9612
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   180
* HOL/Calculation: new rules for substitution in inequalities
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   181
(monotonicity conditions are extracted to be proven at end);
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   182
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   183
* HOL/inductive: rename "intrs" to "intros" (potential
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   184
INCOMPATIBILITY); emulation of mk_cases feature for proof scripts:
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   185
'inductive_cases' command and 'ind_cases' method; NOTE: use (cases
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   186
(simplified)) method in proper proofs;
8283
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   187
9437
93e91040c286 * Isar/Provers: intro/elim/dest attributes: changed
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   188
* Provers: intro/elim/dest attributes: changed intro/intro!/intro!!
93e91040c286 * Isar/Provers: intro/elim/dest attributes: changed
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   189
flags to intro!/intro/intro? (in most cases, one should have to change
93e91040c286 * Isar/Provers: intro/elim/dest attributes: changed
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   190
intro!! to intro? only);
8283
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   191
9612
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   192
* names of theorems etc. may be natural numbers as well;
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   193
9724
2030c5d63741 * 'pr' command: optional argument for ProofContext.prems_limit;
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   194
* 'pr' command: optional arguments for goals_limit and
2030c5d63741 * 'pr' command: optional argument for ProofContext.prems_limit;
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   195
ProofContext.prems_limit; no longer prints theory contexts, but only
2030c5d63741 * 'pr' command: optional argument for ProofContext.prems_limit;
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   196
proof states;
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   197
5f3b0e02ec15 Isar: splitter support; improved diagnostics;
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   198
* diagnostic commands 'pr', 'thm', 'prop', 'term', 'typ' admit
8518
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   199
additional print modes to be specified; e.g. "pr(latex)" will print
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   200
proof state according to the Isabelle LaTeX style;
8487
5f3b0e02ec15 Isar: splitter support; improved diagnostics;
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   201
8534
fdbabfbc3829 improved support for emulating tactic scripts;
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   202
* improved support for emulating tactic scripts, including proof
9612
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   203
methods 'rule_tac' etc., 'cut_tac', 'thin_tac', 'subgoal_tac',
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   204
'rename_tac', 'rotate_tac', 'tactic', and 'case_tac' / 'induct_tac'
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   205
(for HOL datatypes);
8534
fdbabfbc3829 improved support for emulating tactic scripts;
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diff changeset
   206
8673
987ea1a559d0 Isar: simplified (more robust) goal selection of proof methods;
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diff changeset
   207
* simplified (more robust) goal selection of proof methods: 1st goal,
987ea1a559d0 Isar: simplified (more robust) goal selection of proof methods;
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diff changeset
   208
all goals, or explicit goal specifier (tactic emulation); thus 'proof
987ea1a559d0 Isar: simplified (more robust) goal selection of proof methods;
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diff changeset
   209
method scripts' have to be in depth-first order;
987ea1a559d0 Isar: simplified (more robust) goal selection of proof methods;
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   210
9198
0ab3c81e9425 * formal comments (text blocks etc.) in new-style theories may now
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diff changeset
   211
* tuned 'let' syntax: replaced 'as' keyword by 'and';
8729
094dbd0fad0c * improved name spaces: ambiguous output is qualified; support for
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   212
9224
0da360494917 * Isar: removed 'help' command, which hasn't been too helpful anyway;
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   213
* removed 'help' command, which hasn't been too helpful anyway; should
0da360494917 * Isar: removed 'help' command, which hasn't been too helpful anyway;
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   214
instead use individual commands for printing items (print_commands,
0da360494917 * Isar: removed 'help' command, which hasn't been too helpful anyway;
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diff changeset
   215
print_methods etc.);
0da360494917 * Isar: removed 'help' command, which hasn't been too helpful anyway;
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   216
9239
b31c2132176a * added 'nothing' --- the empty list of theorems;
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diff changeset
   217
* added 'nothing' --- the empty list of theorems;
b31c2132176a * added 'nothing' --- the empty list of theorems;
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   218
8184
6b7ef9fc39da nat as names;
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   219
8014
fdf1281a3d0c HOL changes
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*** HOL ***
fdf1281a3d0c HOL changes
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   221
9814
aef1f83cf8a6 * HOL/Lambda: converted into new-style theory and document;
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   222
* HOL/Lambda: converted into new-style theory and document;
aef1f83cf8a6 * HOL/Lambda: converted into new-style theory and document;
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   223
8518
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* HOL/Algebra: new theory of rings and univariate polynomials, by
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diff changeset
   225
Clemens Ballarin;
8014
fdf1281a3d0c HOL changes
paulson
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   226
8392
5bf82327aa36 Factorization
paulson
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   227
* HOL/ex: new theory Factorization proving the Fundamental Theorem of
5bf82327aa36 Factorization
paulson
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   228
Arithmetic, by Thomas M Rasmussen;
8007
c29e27ee4933 header;
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   229
8570
63d4f3ea2e70 HOL/ex/Multiquote;
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diff changeset
   230
* HOL/ex/Multiquote: multiple nested quotations and anti-quotations --
63d4f3ea2e70 HOL/ex/Multiquote;
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diff changeset
   231
basically a generalized version of de-Bruijn representation; very
9489
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   232
useful in avoiding lifting of operations;
8570
63d4f3ea2e70 HOL/ex/Multiquote;
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   233
9542
fa19ffdbe1de ZF arith
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   234
* HOL/NumberTheory: Chinese Remainder Theorem, Fermat/Euler Theorem, Wilson's
fa19ffdbe1de ZF arith
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   235
Theorem, by Thomas M Rasmussen;
fa19ffdbe1de ZF arith
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   236
fa19ffdbe1de ZF arith
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   237
* HOL/Prolog: a (bare-bones) implementation of Lambda-Prolog;
fa19ffdbe1de ZF arith
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   238
8848
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   239
* HOL/Real: "rabs" replaced by overloaded "abs" function;
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   240
9612
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   241
* HOL/record: added general record equality rule to simpset; fixed
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
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diff changeset
   242
select-update simplification procedure to handle extended records as
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
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   243
well; admit "r" as field name;
9542
fa19ffdbe1de ZF arith
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   244
8967
00f18476ac15 overloading of 0
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   245
* HOL: 0 is now overloaded over the new sort "zero", allowing its use with
00f18476ac15 overloading of 0
paulson
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diff changeset
   246
other numeric types and also as the identity of groups, rings, etc.;
00f18476ac15 overloading of 0
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   247
00f18476ac15 overloading of 0
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   248
* HOL: new axclass plus_ac0 for addition with the AC-laws and 0 as identity.
00f18476ac15 overloading of 0
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   249
Types nat and int belong to this axclass;
00f18476ac15 overloading of 0
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   250
9085
5ce73f3cadff real simprocs
paulson
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   251
* greatly improved simplification involving numerals of type nat, int, real:
8788
518a5450ab6d simprocs
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   252
   (i + #8 + j) = Suc k simplifies to  #7 + (i + j) = k
8832
bcceda950cd0 more details
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   253
   i*j + k + j*#3*i     simplifies to  #4*(i*j) + k
bcceda950cd0 more details
paulson
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   254
  two terms #m*u and #n*u are replaced by #(m+n)*u
bcceda950cd0 more details
paulson
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   255
    (where #m, #n and u can implicitly be 1; this is simproc combine_numerals)
bcceda950cd0 more details
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   256
  and the term/formula #m*u+x ~~ #n*u+y simplifies simplifies to #(m-n)+x ~~ y
bcceda950cd0 more details
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diff changeset
   257
    or x ~~ #(n-m)+y, where ~~ is one of = < <= or - (simproc cancel_numerals);
8736
0bfd6678a5fa new simprocs for numerals of type "nat"
paulson
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   258
9835
543d23cd1259 meson_tac
paulson
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diff changeset
   259
* HOL: meson_tac is available (previously in ex/meson.ML).  It is a powerful
543d23cd1259 meson_tac
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   260
   prover for predicate logic but knows nothing of clasets.  For examples of
543d23cd1259 meson_tac
paulson
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   261
   what it can do, see ex/mesontest.ML and ex/mesontest2.ML;
543d23cd1259 meson_tac
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   262
8848
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diff changeset
   263
* HOL: new version of "case_tac" subsumes both boolean case split and
8440
d66f0f14b1ca * HOL: exhaust_tac on datatypes superceded by new case_tac;
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diff changeset
   264
"exhaust_tac" on datatypes; INCOMPATIBILITY: exhaust_tac no longer
8518
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   265
exists, may define val exhaust_tac = case_tac for ad-hoc portability;
8440
d66f0f14b1ca * HOL: exhaust_tac on datatypes superceded by new case_tac;
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diff changeset
   266
8848
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diff changeset
   267
* HOL: simplification no longer dives into case-expressions: only the
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diff changeset
   268
selector expression is simplified, but not the remaining arms. To
wenzelm
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diff changeset
   269
enable full simplification of case-expressions for datatype t, you
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diff changeset
   270
need to remove t.weak_case_cong from the simpset, either permanently
8603
805910de7be0 *** empty log message ***
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   271
(Delcongs[thm"t.weak_case_cong"];) or locally (delcongs [...]).
805910de7be0 *** empty log message ***
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8848
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* HOL/recdef: the recursion equations generated by 'recdef' for
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   274
function 'f' are now called f.simps instead of f.rules; if all
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diff changeset
   275
termination conditions are proved automatically, these simplification
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diff changeset
   276
rules are added to the simpset, as in primrec; rules may be named
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   277
individually as well, resulting in a separate list of theorems for
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diff changeset
   278
each equation;
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diff changeset
   279
9489
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
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diff changeset
   280
* HOL/While is a new theory that provides a while-combinator. It
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
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diff changeset
   281
permits the definition of tail-recursive functions without the
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
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diff changeset
   282
provision of a termination measure. The latter is necessary once the
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
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diff changeset
   283
invariant proof rule for while is applied.
9457
966974a7a5b3 * HOL/While
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   284
8925
f4599af94b83 SetInterval
nipkow
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   285
* HOL: new (overloaded) notation for the set of elements below/above some
f4599af94b83 SetInterval
nipkow
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   286
element: {..u}, {..u(}, {l..}, {)l..}. See theory SetInterval.
f4599af94b83 SetInterval
nipkow
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diff changeset
   287
8848
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diff changeset
   288
* HOL: theorems impI, allI, ballI bound as "strip";
wenzelm
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diff changeset
   289
9746
64b803edef39 *** empty log message ***
nipkow
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diff changeset
   290
* new tactic induct_thm_tac: thm -> string -> int -> tactic
64b803edef39 *** empty log message ***
nipkow
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   291
induct_tac th "x1 ... xn" expects th to have a conclusion of the form
64b803edef39 *** empty log message ***
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   292
P v1 ... vn and abbreviates res_inst_tac [("v1","x1"),...,("vn","xn")] th;
64b803edef39 *** empty log message ***
nipkow
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diff changeset
   293
9741
0502f06c2d29 fixed name;
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diff changeset
   294
* new function rulify: thm -> thm for turning outer -->/! into ==>/?;
0502f06c2d29 fixed name;
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   295
behaves like qed_spec_mp;
9737
7aae235675dc *** empty log message ***
nipkow
parents: 9724
diff changeset
   296
9489
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
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parents: 9457
diff changeset
   297
* theory Sexp now in HOL/Induct examples (it used to be part of main
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
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diff changeset
   298
HOL, but was unused);
8626
nipkow
parents: 8621
diff changeset
   299
8887
c0c583ce0b0b * HOL/ML: even fewer consts are declared as global (see theories Ord,
wenzelm
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diff changeset
   300
* fewer consts declared as global (e.g. have to refer to "Lfp.lfp"
c0c583ce0b0b * HOL/ML: even fewer consts are declared as global (see theories Ord,
wenzelm
parents: 8848
diff changeset
   301
instead of "lfp" internally; affects ML packages only);
c0c583ce0b0b * HOL/ML: even fewer consts are declared as global (see theories Ord,
wenzelm
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diff changeset
   302
9349
d43669fb423d * tuned AST representation of nested pairs, avoiding bogus output in
wenzelm
parents: 9335
diff changeset
   303
* tuned AST representation of nested pairs, avoiding bogus output in
d43669fb423d * tuned AST representation of nested pairs, avoiding bogus output in
wenzelm
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diff changeset
   304
case of overlap with user translations (e.g. judgements over tuples);
d43669fb423d * tuned AST representation of nested pairs, avoiding bogus output in
wenzelm
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diff changeset
   305
8412
65f9089f6f71 cases_tac
nipkow
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diff changeset
   306
9542
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   307
*** ZF ***
fa19ffdbe1de ZF arith
paulson
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diff changeset
   308
9577
9e66e8ed8237 ZF arith
paulson
parents: 9542
diff changeset
   309
* simplification automatically cancels common terms in arithmetic expressions
9e66e8ed8237 ZF arith
paulson
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diff changeset
   310
over nat and int;
9542
fa19ffdbe1de ZF arith
paulson
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diff changeset
   311
fa19ffdbe1de ZF arith
paulson
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diff changeset
   312
* new treatment of nat to minimize type-checking: all operators coerce their 
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   313
operands to a natural number using the function natify, making the algebraic
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   314
laws unconditional;
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   315
9577
9e66e8ed8237 ZF arith
paulson
parents: 9542
diff changeset
   316
* as above, for int: operators coerce their operands to an integer using the
9e66e8ed8237 ZF arith
paulson
parents: 9542
diff changeset
   317
function intify;
9542
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   318
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   319
* the integer library now contains many of the usual laws for the orderings, 
9577
9e66e8ed8237 ZF arith
paulson
parents: 9542
diff changeset
   320
including $<=, and monotonicity laws for $+ and $*; 
9542
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   321
9647
e9623f47275b new example ZF/ex/NatSum
paulson
parents: 9612
diff changeset
   322
* new example ZF/ex/NatSum to demonstrate integer arithmetic simplification;
9542
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   323
9388
0b039a3575eb // change; also moved entry for AddIffs
paulson
parents: 9383
diff changeset
   324
*** FOL & ZF ***
0b039a3575eb // change; also moved entry for AddIffs
paulson
parents: 9383
diff changeset
   325
0b039a3575eb // change; also moved entry for AddIffs
paulson
parents: 9383
diff changeset
   326
* AddIffs now available, giving theorems of the form P<->Q to the
9489
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
   327
simplifier and classical reasoner simultaneously;
9388
0b039a3575eb // change; also moved entry for AddIffs
paulson
parents: 9383
diff changeset
   328
0b039a3575eb // change; also moved entry for AddIffs
paulson
parents: 9383
diff changeset
   329
8358
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents: 8283
diff changeset
   330
*** General ***
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents: 8283
diff changeset
   331
9709
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   332
* Provers: blast(_tac) now handles actual object-logic rules as
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   333
assumptions; note that auto(_tac) uses blast(_tac) internally as well;
9489
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
   334
9709
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   335
* Provers: Simplifier.easy_setup provides a fast path to basic
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   336
Simplifier setup for new object-logics;
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   337
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   338
* 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
   339
9709
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   340
* Pure: improved name spaces: ambiguous output is qualified; support
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   341
for hiding of names;
8729
094dbd0fad0c * improved name spaces: ambiguous output is qualified; support for
wenzelm
parents: 8705
diff changeset
   342
9709
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   343
* 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
   344
option of isabelle and isatool usedir (currently only observed by
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   345
Poly/ML);
8358
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents: 8283
diff changeset
   346
9709
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   347
* system: provide TAGS file for Isabelle sources;
9052
7db48fe85b05 provide TAGS file for Isabelle sources;
wenzelm
parents: 9028
diff changeset
   348
9701
533df6cedc2d * \isabellestyle{it} produces near math mode output;
wenzelm
parents: 9647
diff changeset
   349
* settings: smart setup of canonical ML_HOME, ISABELLE_INTERFACE, and
533df6cedc2d * \isabellestyle{it} produces near math mode output;
wenzelm
parents: 9647
diff changeset
   350
XSYMBOL_HOME; no longer need to do manual configuration in most
533df6cedc2d * \isabellestyle{it} produces near math mode output;
wenzelm
parents: 9647
diff changeset
   351
situations;
533df6cedc2d * \isabellestyle{it} produces near math mode output;
wenzelm
parents: 9647
diff changeset
   352
9288
06a55195741b infix 'OF' is a version of 'MRS' with more appropriate argument order;
wenzelm
parents: 9239
diff changeset
   353
* 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
   354
order;
06a55195741b infix 'OF' is a version of 'MRS' with more appropriate argument order;
wenzelm
parents: 9239
diff changeset
   355
8994
803533fbb3ec * ML: renamed flags Syntax.trace_norm_ast to Syntax.trace_ast; global
wenzelm
parents: 8991
diff changeset
   356
* 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
   357
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
   358
9330
6861e3b00155 HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents: 9288
diff changeset
   359
* 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
   360
overloading (usually false);
6861e3b00155 HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents: 9288
diff changeset
   361
8518
wenzelm
parents: 8487
diff changeset
   362
* ML: new combinators |>> and |>>> for incremental transformations
wenzelm
parents: 8487
diff changeset
   363
with secondary results (e.g. certain theory extensions):
8440
d66f0f14b1ca * HOL: exhaust_tac on datatypes superceded by new case_tac;
wenzelm
parents: 8425
diff changeset
   364
8358
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents: 8283
diff changeset
   365
8015
wenzelm
parents: 8014
diff changeset
   366
7986
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   367
New in Isabelle99 (October 1999)
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   368
--------------------------------
4649
89ad3eb863a1 changed wrapper mechanism of classical reasoner
oheimb
parents: 4575
diff changeset
   369
5931
325300576da7 Finally removing "Compl" from HOL
paulson
parents: 5781
diff changeset
   370
*** Overview of INCOMPATIBILITIES (see below for more details) ***
325300576da7 Finally removing "Compl" from HOL
paulson
parents: 5781
diff changeset
   371
6922
f5c5b81b3f14 integer division
paulson
parents: 6795
diff changeset
   372
* HOL: The THEN and ELSE parts of conditional expressions (if P then x else y)
f5c5b81b3f14 integer division
paulson
parents: 6795
diff changeset
   373
are no longer simplified.  (This allows the simplifier to unfold recursive
f5c5b81b3f14 integer division
paulson
parents: 6795
diff changeset
   374
functional programs.)  To restore the old behaviour, declare
7215
wenzelm
parents: 7204
diff changeset
   375
wenzelm
parents: 7204
diff changeset
   376
    Delcongs [if_weak_cong];
6922
f5c5b81b3f14 integer division
paulson
parents: 6795
diff changeset
   377
6269
wenzelm
parents: 6259
diff changeset
   378
* HOL: Removed the obsolete syntax "Compl A"; use -A for set
wenzelm
parents: 6259
diff changeset
   379
complement;
5931
325300576da7 Finally removing "Compl" from HOL
paulson
parents: 5781
diff changeset
   380
6269
wenzelm
parents: 6259
diff changeset
   381
* HOL: the predicate "inj" is now defined by translation to "inj_on";
6174
paulson
parents: 6157
diff changeset
   382
7847
5a3fa0c4b215 Eliminated mutual_induct_tac.
berghofe
parents: 7805
diff changeset
   383
* HOL/datatype: mutual_induct_tac no longer exists --
5a3fa0c4b215 Eliminated mutual_induct_tac.
berghofe
parents: 7805
diff changeset
   384
  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
   385
6386
e9e8af97f48f HOL/typedef: fixed type inference for representing set;
wenzelm
parents: 6343
diff changeset
   386
* HOL/typedef: fixed type inference for representing set; type
e9e8af97f48f HOL/typedef: fixed type inference for representing set;
wenzelm
parents: 6343
diff changeset
   387
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
   388
6269
wenzelm
parents: 6259
diff changeset
   389
* ZF: The con_defs part of an inductive definition may no longer refer
wenzelm
parents: 6259
diff changeset
   390
to constants declared in the same theory;
6057
395ea7617554 *** empty log message ***
nipkow
parents: 6028
diff changeset
   391
6269
wenzelm
parents: 6259
diff changeset
   392
* HOL, ZF: the function mk_cases, generated by the inductive
wenzelm
parents: 6259
diff changeset
   393
definition package, has lost an argument.  To simplify its result, it
wenzelm
parents: 6259
diff changeset
   394
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
   395
7215
wenzelm
parents: 7204
diff changeset
   396
* HOL/List: the constructors of type list are now Nil and Cons;
wenzelm
parents: 7204
diff changeset
   397
7619
d78b8b103fd9 incompatibility solver
nipkow
parents: 7595
diff changeset
   398
* Simplifier: the type of the infix ML functions
8729
094dbd0fad0c * improved name spaces: ambiguous output is qualified; support for
wenzelm
parents: 8705
diff changeset
   399
        setSSolver addSSolver setSolver addSolver
7619
d78b8b103fd9 incompatibility solver
nipkow
parents: 7595
diff changeset
   400
is now  simpset * solver -> simpset  where `solver' is a new abstract type
d78b8b103fd9 incompatibility solver
nipkow
parents: 7595
diff changeset
   401
for packaging solvers. A solver is created via
8729
094dbd0fad0c * improved name spaces: ambiguous output is qualified; support for
wenzelm
parents: 8705
diff changeset
   402
        mk_solver: string -> (thm list -> int -> tactic) -> solver
7619
d78b8b103fd9 incompatibility solver
nipkow
parents: 7595
diff changeset
   403
where the string argument is only a comment.
6057
395ea7617554 *** empty log message ***
nipkow
parents: 6028
diff changeset
   404
7647
2ceddd91cd0a proper handling of dangling sort hypotheses (at last!);
wenzelm
parents: 7619
diff changeset
   405
6069
a99879bd9f13 if-then-else syntax for ZF
paulson
parents: 6064
diff changeset
   406
*** Proof tools ***
a99879bd9f13 if-then-else syntax for ZF
paulson
parents: 6064
diff changeset
   407
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   408
* Provers/Arith/fast_lin_arith.ML contains a functor for creating a
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   409
decision procedure for linear arithmetic. Currently it is used for
7593
wenzelm
parents: 7492
diff changeset
   410
types `nat', `int', and `real' in HOL (see below); it can, should and
wenzelm
parents: 7492
diff changeset
   411
will be instantiated for other types and logics as well.
6069
a99879bd9f13 if-then-else syntax for ZF
paulson
parents: 6064
diff changeset
   412
7324
6cb0d0202298 simplifier flex heads.
nipkow
parents: 7320
diff changeset
   413
* The simplifier now accepts rewrite rules with flexible heads, eg
6cb0d0202298 simplifier flex heads.
nipkow
parents: 7320
diff changeset
   414
     hom ?f ==> ?f(?x+?y) = ?f ?x + ?f ?y
6cb0d0202298 simplifier flex heads.
nipkow
parents: 7320
diff changeset
   415
  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
   416
  matching.
6069
a99879bd9f13 if-then-else syntax for ZF
paulson
parents: 6064
diff changeset
   417
7593
wenzelm
parents: 7492
diff changeset
   418
6014
bfd4923b0957 locales
paulson
parents: 5973
diff changeset
   419
*** General ***
bfd4923b0957 locales
paulson
parents: 5973
diff changeset
   420
7986
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   421
* New Isabelle/Isar subsystem provides an alternative to traditional
7215
wenzelm
parents: 7204
diff changeset
   422
tactical theorem proving; together with the ProofGeneral/isar user
wenzelm
parents: 7204
diff changeset
   423
interface it offers an interactive environment for developing human
wenzelm
parents: 7204
diff changeset
   424
readable proof documents (Isar == Intelligible semi-automated
7886
8fa551e22e52 the settings environment is now statically scoped;
wenzelm
parents: 7863
diff changeset
   425
reasoning); for further information see isatool doc isar-ref,
7986
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   426
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
   427
9612
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   428
* improved and simplified presentation of theories: better HTML markup
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   429
(including colors), graph views in several sizes; isatool usedir now
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   430
provides a proper interface for user theories (via -P option); actual
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   431
document preparation based on (PDF)LaTeX is available as well (for
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   432
new-style theories only); see isatool doc system for more information;
7215
wenzelm
parents: 7204
diff changeset
   433
7252
d3ed595dd772 replaced 'ProofGeneral' by 'Proof General';
wenzelm
parents: 7238
diff changeset
   434
* native support for Proof General, both for classic Isabelle and
7986
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   435
Isabelle/Isar;
7215
wenzelm
parents: 7204
diff changeset
   436
7791
wenzelm
parents: 7780
diff changeset
   437
* ML function thm_deps visualizes dependencies of theorems and lemmas,
wenzelm
parents: 7780
diff changeset
   438
using the graph browser tool;
wenzelm
parents: 7780
diff changeset
   439
6751
0e346c73828c Isabelle manuals now also available as PDF;
wenzelm
parents: 6671
diff changeset
   440
* Isabelle manuals now also available as PDF;
0e346c73828c Isabelle manuals now also available as PDF;
wenzelm
parents: 6671
diff changeset
   441
6449
d031cb5ea2fc loadpath replaced;
wenzelm
parents: 6420
diff changeset
   442
* theory loader rewritten from scratch (may not be fully
d031cb5ea2fc loadpath replaced;
wenzelm
parents: 6420
diff changeset
   443
bug-compatible); old loadpath variable has been replaced by show_path,
6671
wenzelm
parents: 6563
diff changeset
   444
add_path, del_path, reset_path functions; new operations such as
7593
wenzelm
parents: 7492
diff changeset
   445
update_thy, touch_thy, remove_thy, use/update_thy_only (see also
wenzelm
parents: 7492
diff changeset
   446
isatool doc ref);
6449
d031cb5ea2fc loadpath replaced;
wenzelm
parents: 6420
diff changeset
   447
7215
wenzelm
parents: 7204
diff changeset
   448
* improved isatool install: option -k creates KDE application icon,
wenzelm
parents: 7204
diff changeset
   449
option -p DIR installs standalone binaries;
wenzelm
parents: 7204
diff changeset
   450
wenzelm
parents: 7204
diff changeset
   451
* added ML_PLATFORM setting (useful for cross-platform installations);
wenzelm
parents: 7204
diff changeset
   452
more robust handling of platform specific ML images for SML/NJ;
wenzelm
parents: 7204
diff changeset
   453
7886
8fa551e22e52 the settings environment is now statically scoped;
wenzelm
parents: 7863
diff changeset
   454
* the settings environment is now statically scoped, i.e. it is never
7986
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   455
created again in sub-processes invoked from isabelle, isatool, or
7886
8fa551e22e52 the settings environment is now statically scoped;
wenzelm
parents: 7863
diff changeset
   456
Isabelle;
8fa551e22e52 the settings environment is now statically scoped;
wenzelm
parents: 7863
diff changeset
   457
7215
wenzelm
parents: 7204
diff changeset
   458
* path element specification '~~' refers to '$ISABELLE_HOME';
wenzelm
parents: 7204
diff changeset
   459
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   460
* in locales, the "assumes" and "defines" parts may be omitted if
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   461
empty;
5973
040f6d2af50d removed prs / prs_fn;
wenzelm
parents: 5931
diff changeset
   462
6269
wenzelm
parents: 6259
diff changeset
   463
* new print_mode "xsymbols" for extended symbol support (e.g. genuine
wenzelm
parents: 6259
diff changeset
   464
long arrows);
6259
488bdc1bd11a path element specification '~~' refers to '$ISABELLE_HOME';
wenzelm
parents: 6174
diff changeset
   465
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   466
* new print_mode "HTML";
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   467
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   468
* new flag show_tags controls display of tags of theorems (which are
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   469
basically just comments that may be attached by some tools);
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   470
6461
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   471
* Isamode 2.6 requires patch to accomodate change of Isabelle font
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   472
mode and goal output format:
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   473
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   474
diff -r Isamode-2.6/elisp/isa-load.el Isamode/elisp/isa-load.el
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   475
244c244
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   476
<       (list (isa-getenv "ISABELLE") "-msymbols" logic-name)
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   477
---
6533
wenzelm
parents: 6482
diff changeset
   478
>       (list (isa-getenv "ISABELLE") "-misabelle_font" "-msymbols" logic-name)
6461
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   479
diff -r Isabelle-2.6/elisp/isa-proofstate.el Isamode/elisp/isa-proofstate.el
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   480
181c181
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   481
< (defconst proofstate-proofstart-regexp "^Level [0-9]+$"
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   482
---
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   483
> (defconst proofstate-proofstart-regexp "^Level [0-9]+"
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   484
7450
e329ca03fd00 added bind_thms;
wenzelm
parents: 7444
diff changeset
   485
* function bind_thms stores lists of theorems (cf. bind_thm);
e329ca03fd00 added bind_thms;
wenzelm
parents: 7444
diff changeset
   486
7593
wenzelm
parents: 7492
diff changeset
   487
* new shorthand tactics ftac, eatac, datac, fatac;
wenzelm
parents: 7492
diff changeset
   488
wenzelm
parents: 7492
diff changeset
   489
* qed (and friends) now accept "" as result name; in that case the
7986
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   490
theorem is not stored, but proper checks and presentation of the
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   491
result still apply;
7593
wenzelm
parents: 7492
diff changeset
   492
7805
0ae9ddc36fe0 theorem database now also indexes constants "Trueprop", "all",
wenzelm
parents: 7791
diff changeset
   493
* theorem database now also indexes constants "Trueprop", "all",
0ae9ddc36fe0 theorem database now also indexes constants "Trueprop", "all",
wenzelm
parents: 7791
diff changeset
   494
"==>", "=="; thus thms_containing, findI etc. may retrieve more rules;
0ae9ddc36fe0 theorem database now also indexes constants "Trueprop", "all",
wenzelm
parents: 7791
diff changeset
   495
6028
1bfd52528bde *** empty log message ***
oheimb
parents: 6014
diff changeset
   496
6057
395ea7617554 *** empty log message ***
nipkow
parents: 6028
diff changeset
   497
*** HOL ***
395ea7617554 *** empty log message ***
nipkow
parents: 6028
diff changeset
   498
7215
wenzelm
parents: 7204
diff changeset
   499
** HOL arithmetic **
wenzelm
parents: 7204
diff changeset
   500
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   501
* There are now decision procedures for linear arithmetic over nat and
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   502
int:
6131
2d9e609abcdb More Arith.
nipkow
parents: 6070
diff changeset
   503
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   504
1. arith_tac copes with arbitrary formulae involving `=', `<', `<=',
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   505
`+', `-', `Suc', `min', `max' and numerical constants; other subterms
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   506
are treated as atomic; subformulae not involving type `nat' or `int'
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   507
are ignored; quantified subformulae are ignored unless they are
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   508
positive universal or negative existential. The tactic has to be
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   509
invoked by hand and can be a little bit slow. In particular, the
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   510
running time is exponential in the number of occurrences of `min' and
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   511
`max', and `-' on `nat'.
6131
2d9e609abcdb More Arith.
nipkow
parents: 6070
diff changeset
   512
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   513
2. fast_arith_tac is a cut-down version of arith_tac: it only takes
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   514
(negated) (in)equalities among the premises and the conclusion into
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   515
account (i.e. no compound formulae) and does not know about `min' and
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   516
`max', and `-' on `nat'. It is fast and is used automatically by the
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   517
simplifier.
6131
2d9e609abcdb More Arith.
nipkow
parents: 6070
diff changeset
   518
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   519
NB: At the moment, these decision procedures do not cope with mixed
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   520
nat/int formulae where the two parts interact, such as `m < n ==>
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   521
int(m) < int(n)'.
6028
1bfd52528bde *** empty log message ***
oheimb
parents: 6014
diff changeset
   522
7215
wenzelm
parents: 7204
diff changeset
   523
* HOL/Numeral provides a generic theory of numerals (encoded
7313
300487ddfba9 real numerals;
wenzelm
parents: 7300
diff changeset
   524
efficiently as bit strings); setup for types nat/int/real is in place;
7215
wenzelm
parents: 7204
diff changeset
   525
INCOMPATIBILITY: since numeral syntax is now polymorphic, rather than
wenzelm
parents: 7204
diff changeset
   526
int, existing theories and proof scripts may require a few additional
wenzelm
parents: 7204
diff changeset
   527
type constraints;
wenzelm
parents: 7204
diff changeset
   528
wenzelm
parents: 7204
diff changeset
   529
* integer division and remainder can now be performed on constant
wenzelm
parents: 7204
diff changeset
   530
arguments;
7157
paulson
parents: 7125
diff changeset
   531
7215
wenzelm
parents: 7204
diff changeset
   532
* many properties of integer multiplication, division and remainder
wenzelm
parents: 7204
diff changeset
   533
are now available;
6922
f5c5b81b3f14 integer division
paulson
parents: 6795
diff changeset
   534
7287
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   535
* An interface to the Stanford Validity Checker (SVC) is available through the
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   536
tactic svc_tac.  Propositional tautologies and theorems of linear arithmetic
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   537
are proved automatically.  SVC must be installed separately, and its results
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   538
must be TAKEN ON TRUST (Isabelle does not check the proofs, but tags any
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   539
invocation of the underlying oracle).  For SVC see
7444
ee17ad649c26 new SVC url
paulson
parents: 7420
diff changeset
   540
  http://verify.stanford.edu/SVC
6922
f5c5b81b3f14 integer division
paulson
parents: 6795
diff changeset
   541
7125
df7cf6e85501 HOL-Real target now builds an actual image;
wenzelm
parents: 7113
diff changeset
   542
* IsaMakefile: the HOL-Real target now builds an actual image;
df7cf6e85501 HOL-Real target now builds an actual image;
wenzelm
parents: 7113
diff changeset
   543
7215
wenzelm
parents: 7204
diff changeset
   544
wenzelm
parents: 7204
diff changeset
   545
** HOL misc **
wenzelm
parents: 7204
diff changeset
   546
7595
5f5d575ddac3 * HOL/Real/HahnBanach: the Hahn-Banach theorem for real vector spaces
wenzelm
parents: 7593
diff changeset
   547
* 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
   548
(in Isabelle/Isar) -- by Gertrud Bauer;
5f5d575ddac3 * HOL/Real/HahnBanach: the Hahn-Banach theorem for real vector spaces
wenzelm
parents: 7593
diff changeset
   549
7691
b7e8277fa088 added BVC;
wenzelm
parents: 7647
diff changeset
   550
* HOL/BCV: generic model of bytecode verification, i.e. data-flow
b7e8277fa088 added BVC;
wenzelm
parents: 7647
diff changeset
   551
analysis for assembly languages with subtypes;
b7e8277fa088 added BVC;
wenzelm
parents: 7647
diff changeset
   552
6278
37b76155a49e Symbol.output subject to print mode;
wenzelm
parents: 6269
diff changeset
   553
* HOL/TLA (Lamport's Temporal Logic of Actions): major reorganization
37b76155a49e Symbol.output subject to print mode;
wenzelm
parents: 6269
diff changeset
   554
-- avoids syntactic ambiguities and treats state, transition, and
37b76155a49e Symbol.output subject to print mode;
wenzelm
parents: 6269
diff changeset
   555
temporal levels more uniformly; introduces INCOMPATIBILITIES due to
37b76155a49e Symbol.output subject to print mode;
wenzelm
parents: 6269
diff changeset
   556
changed syntax and (many) tactics;
37b76155a49e Symbol.output subject to print mode;
wenzelm
parents: 6269
diff changeset
   557
7791
wenzelm
parents: 7780
diff changeset
   558
* HOL/inductive: Now also handles more general introduction rules such
wenzelm
parents: 7780
diff changeset
   559
  as "ALL y. (y, x) : r --> y : acc r ==> x : acc r"; monotonicity
wenzelm
parents: 7780
diff changeset
   560
  theorems are now maintained within the theory (maintained via the
wenzelm
parents: 7780
diff changeset
   561
  "mono" attribute);
7780
099742c562aa Documented changes to HOL/inductive and function thm_deps.
berghofe
parents: 7691
diff changeset
   562
7238
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   563
* HOL/datatype: Now also handles arbitrarily branching datatypes
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   564
  (using function types) such as
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   565
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   566
  datatype 'a tree = Atom 'a | Branch "nat => 'a tree"
7047
d103b875ef1d Datatype package now handles arbitrarily branching datatypes.
berghofe
parents: 6925
diff changeset
   567
7326
a1555491a966 record_simproc;
wenzelm
parents: 7324
diff changeset
   568
* HOL/record: record_simproc (part of the default simpset) takes care
a1555491a966 record_simproc;
wenzelm
parents: 7324
diff changeset
   569
of selectors applied to updated records; record_split_tac is no longer
7327
wenzelm
parents: 7326
diff changeset
   570
part of the default claset; update_defs may now be removed from the
wenzelm
parents: 7326
diff changeset
   571
simpset in many cases; COMPATIBILITY: old behavior achieved by
7326
a1555491a966 record_simproc;
wenzelm
parents: 7324
diff changeset
   572
a1555491a966 record_simproc;
wenzelm
parents: 7324
diff changeset
   573
  claset_ref () := claset() addSWrapper record_split_wrapper;
a1555491a966 record_simproc;
wenzelm
parents: 7324
diff changeset
   574
  Delsimprocs [record_simproc]
a1555491a966 record_simproc;
wenzelm
parents: 7324
diff changeset
   575
6386
e9e8af97f48f HOL/typedef: fixed type inference for representing set;
wenzelm
parents: 6343
diff changeset
   576
* HOL/typedef: fixed type inference for representing set; type
e9e8af97f48f HOL/typedef: fixed type inference for representing set;
wenzelm
parents: 6343
diff changeset
   577
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
   578
7287
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   579
* HOL/recdef (TFL): 'congs' syntax now expects comma separated list of theorem
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   580
names rather than an ML expression;
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   581
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   582
* HOL/defer_recdef (TFL): like recdef but the well-founded relation can be
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   583
supplied later.  Program schemes can be defined, such as
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   584
    "While B C s = (if B s then While B C (C s) else s)"
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   585
where the well-founded relation can be chosen after B and C have been given.
6563
wenzelm
parents: 6533
diff changeset
   586
7215
wenzelm
parents: 7204
diff changeset
   587
* HOL/List: the constructors of type list are now Nil and Cons;
wenzelm
parents: 7204
diff changeset
   588
INCOMPATIBILITY: while [] and infix # syntax is still there, of
wenzelm
parents: 7204
diff changeset
   589
course, ML tools referring to List.list.op # etc. have to be adapted;
wenzelm
parents: 7204
diff changeset
   590
7238
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   591
* HOL_quantifiers flag superseded by "HOL" print mode, which is
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   592
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
   593
the original Gordon/HOL-style output;
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   594
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   595
* 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
   596
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
   597
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   598
* HOL basic syntax simplified (more orthogonal): all variants of
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   599
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
   600
Eps operator is provided as well: "SOME x. P[x]";
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   601
7320
e89fd7d0a624 Moved sum_case to theory HOL/Datatype.
berghofe
parents: 7313
diff changeset
   602
* 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
   603
7280
wenzelm
parents: 7261
diff changeset
   604
* HOL/Univ.thy: infix syntax <*>, <+>, <**>, <+> eliminated and made
wenzelm
parents: 7261
diff changeset
   605
thus available for user theories;
wenzelm
parents: 7261
diff changeset
   606
7300
8439bf404c28 * HOLCF/IOA/Sequents: renamed 'Cons' to 'Consq' to avoid clash with HOL/List;
wenzelm
parents: 7287
diff changeset
   607
* 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
   608
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
   609
time;
8439bf404c28 * HOLCF/IOA/Sequents: renamed 'Cons' to 'Consq' to avoid clash with HOL/List;
wenzelm
parents: 7287
diff changeset
   610
7986
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   611
* HOL: new tactic smp_tac: int -> int -> tactic, which applies spec
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   612
several times and then mp;
7492
44b333fb5b80 *** empty log message ***
oheimb
parents: 7450
diff changeset
   613
7215
wenzelm
parents: 7204
diff changeset
   614
7113
paulson
parents: 7047
diff changeset
   615
*** LK ***
paulson
parents: 7047
diff changeset
   616
7215
wenzelm
parents: 7204
diff changeset
   617
* the notation <<...>> is now available as a notation for sequences of
wenzelm
parents: 7204
diff changeset
   618
formulas;
7113
paulson
parents: 7047
diff changeset
   619
paulson
parents: 7047
diff changeset
   620
* the simplifier is now installed
paulson
parents: 7047
diff changeset
   621
8729
094dbd0fad0c * improved name spaces: ambiguous output is qualified; support for
wenzelm
parents: 8705
diff changeset
   622
* the axiom system has been generalized (thanks to Soren Heilmann)
7113
paulson
parents: 7047
diff changeset
   623
paulson
parents: 7047
diff changeset
   624
* the classical reasoner now has a default rule database
paulson
parents: 7047
diff changeset
   625
paulson
parents: 7047
diff changeset
   626
6064
0786b5afd8ee primrec, induct_tac
paulson
parents: 6063
diff changeset
   627
*** ZF ***
0786b5afd8ee primrec, induct_tac
paulson
parents: 6063
diff changeset
   628
0786b5afd8ee primrec, induct_tac
paulson
parents: 6063
diff changeset
   629
* new primrec section allows primitive recursive functions to be given
6269
wenzelm
parents: 6259
diff changeset
   630
directly (as in HOL) over datatypes and the natural numbers;
6064
0786b5afd8ee primrec, induct_tac
paulson
parents: 6063
diff changeset
   631
6269
wenzelm
parents: 6259
diff changeset
   632
* new tactics induct_tac and exhaust_tac for induction (or case
wenzelm
parents: 6259
diff changeset
   633
analysis) over datatypes and the natural numbers;
6064
0786b5afd8ee primrec, induct_tac
paulson
parents: 6063
diff changeset
   634
0786b5afd8ee primrec, induct_tac
paulson
parents: 6063
diff changeset
   635
* the datatype declaration of type T now defines the recursor T_rec;
0786b5afd8ee primrec, induct_tac
paulson
parents: 6063
diff changeset
   636
6141
a6922171b396 removal of the (thm list) argument of mk_cases
paulson
parents: 6131
diff changeset
   637
* simplification automatically does freeness reasoning for datatype
6269
wenzelm
parents: 6259
diff changeset
   638
constructors;
6141
a6922171b396 removal of the (thm list) argument of mk_cases
paulson
parents: 6131
diff changeset
   639
6269
wenzelm
parents: 6259
diff changeset
   640
* automatic type-inference, with AddTCs command to insert new
wenzelm
parents: 6259
diff changeset
   641
type-checking rules;
6155
e387d188d0ca ZF typechecking
paulson
parents: 6141
diff changeset
   642
6269
wenzelm
parents: 6259
diff changeset
   643
* datatype introduction rules are now added as Safe Introduction rules
wenzelm
parents: 6259
diff changeset
   644
to the claset;
6155
e387d188d0ca ZF typechecking
paulson
parents: 6141
diff changeset
   645
6269
wenzelm
parents: 6259
diff changeset
   646
* the syntax "if P then x else y" is now available in addition to
wenzelm
parents: 6259
diff changeset
   647
if(P,x,y);
wenzelm
parents: 6259
diff changeset
   648
6069
a99879bd9f13 if-then-else syntax for ZF
paulson
parents: 6064
diff changeset
   649
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   650
*** Internal programming interfaces ***
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   651
7919
35c18affc1d8 tuned simplifier trace output; new flag debug_simp
wenzelm
parents: 7886
diff changeset
   652
* tuned simplifier trace output; new flag debug_simp;
35c18affc1d8 tuned simplifier trace output; new flag debug_simp
wenzelm
parents: 7886
diff changeset
   653
7420
cba45c114f3b structures Vartab / Termtab (instances of TableFun);
wenzelm
parents: 7327
diff changeset
   654
* structures Vartab / Termtab (instances of TableFun) offer efficient
cba45c114f3b structures Vartab / Termtab (instances of TableFun);
wenzelm
parents: 7327
diff changeset
   655
tables indexed by indexname_ord / term_ord (compatible with aconv);
cba45c114f3b structures Vartab / Termtab (instances of TableFun);
wenzelm
parents: 7327
diff changeset
   656
6386
e9e8af97f48f HOL/typedef: fixed type inference for representing set;
wenzelm
parents: 6343
diff changeset
   657
* AxClass.axclass_tac lost the theory argument;
e9e8af97f48f HOL/typedef: fixed type inference for representing set;
wenzelm
parents: 6343
diff changeset
   658
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   659
* tuned current_goals_markers semantics: begin / end goal avoids
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   660
printing empty lines;
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   661
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   662
* removed prs and prs_fn hook, which was broken because it did not
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   663
include \n in its semantics, forcing writeln to add one
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   664
uncoditionally; replaced prs_fn by writeln_fn; consider std_output:
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   665
string -> unit if you really want to output text without newline;
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   666
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   667
* Symbol.output subject to print mode; INCOMPATIBILITY: defaults to
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   668
plain output, interface builders may have to enable 'isabelle_font'
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   669
mode to get Isabelle font glyphs as before;
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   670
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   671
* refined token_translation interface; INCOMPATIBILITY: output length
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   672
now of type real instead of int;
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   673
7196
c8d1002060e8 theory loader actions;
wenzelm
parents: 7157
diff changeset
   674
* theory loader actions may be traced via new ThyInfo.add_hook
c8d1002060e8 theory loader actions;
wenzelm
parents: 7157
diff changeset
   675
interface (see src/Pure/Thy/thy_info.ML); example application: keep
c8d1002060e8 theory loader actions;
wenzelm
parents: 7157
diff changeset
   676
your own database of information attached to *whole* theories -- as
c8d1002060e8 theory loader actions;
wenzelm
parents: 7157
diff changeset
   677
opposed to intra-theory data slots offered via TheoryDataFun;
c8d1002060e8 theory loader actions;
wenzelm
parents: 7157
diff changeset
   678
7647
2ceddd91cd0a proper handling of dangling sort hypotheses (at last!);
wenzelm
parents: 7619
diff changeset
   679
* proper handling of dangling sort hypotheses (at last!);
2ceddd91cd0a proper handling of dangling sort hypotheses (at last!);
wenzelm
parents: 7619
diff changeset
   680
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
   681
extra sort hypotheses that can be witnessed from the type signature;
7986
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   682
the force_strip_shyps flag is gone, any remaining shyps are simply
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   683
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
   684
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   685
6064
0786b5afd8ee primrec, induct_tac
paulson
parents: 6063
diff changeset
   686
5781
d37380544c39 tuned current_goals_markers;
wenzelm
parents: 5731
diff changeset
   687
New in Isabelle98-1 (October 1998)
d37380544c39 tuned current_goals_markers;
wenzelm
parents: 5731
diff changeset
   688
----------------------------------
d37380544c39 tuned current_goals_markers;
wenzelm
parents: 5731
diff changeset
   689
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   690
*** Overview of INCOMPATIBILITIES (see below for more details) ***
4842
0afcae75b34a *** empty log message ***
wenzelm
parents: 4838
diff changeset
   691
5726
wenzelm
parents: 5722
diff changeset
   692
* several changes of automated proof tools;
5373
wenzelm
parents: 5363
diff changeset
   693
5726
wenzelm
parents: 5722
diff changeset
   694
* HOL: major changes to the inductive and datatype packages, including
wenzelm
parents: 5722
diff changeset
   695
some minor incompatibilities of theory syntax;
5214
75c6392d1274 Adapted to new datatype package.
berghofe
parents: 5207
diff changeset
   696
5726
wenzelm
parents: 5722
diff changeset
   697
* HOL: renamed r^-1 to 'converse' from 'inverse'; 'inj_onto' is now
5217
wenzelm
parents: 5214
diff changeset
   698
called `inj_on';
5160
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
   699
5275
de5d5e5eb692 *** empty log message ***
nipkow
parents: 5267
diff changeset
   700
* HOL: removed duplicate thms in Arith:
de5d5e5eb692 *** empty log message ***
nipkow
parents: 5267
diff changeset
   701
  less_imp_add_less  should be replaced by  trans_less_add1
de5d5e5eb692 *** empty log message ***
nipkow
parents: 5267
diff changeset
   702
  le_imp_add_le      should be replaced by  trans_le_add1
5160
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
   703
5726
wenzelm
parents: 5722
diff changeset
   704
* HOL: unary minus is now overloaded (new type constraints may be
wenzelm
parents: 5722
diff changeset
   705
required);
5490
85855f65d0c6 From Compl(A) to -A
paulson
parents: 5475
diff changeset
   706
5726
wenzelm
parents: 5722
diff changeset
   707
* HOL and ZF: unary minus for integers is now #- instead of #~.  In
wenzelm
parents: 5722
diff changeset
   708
ZF, expressions such as n#-1 must be changed to n#- 1, since #-1 is
wenzelm
parents: 5722
diff changeset
   709
now taken as an integer constant.
5541
f8fb27db4bcd unary minus
paulson
parents: 5526
diff changeset
   710
5726
wenzelm
parents: 5722
diff changeset
   711
* Pure: ML function 'theory_of' renamed to 'theory';
5397
034ed25535b9 * Pure: ML function 'theory_of' replaced by 'theory';
wenzelm
parents: 5373
diff changeset
   712
5363
0cf15843b82f isatool install;
wenzelm
parents: 5332
diff changeset
   713
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   714
*** Proof tools ***
4880
312115d20c45 *** empty log message ***
nipkow
parents: 4879
diff changeset
   715
5657
1a6c9c6a3f8e 2. The simplifier now knows a little bit about nat-arithmetic.
nipkow
parents: 5651
diff changeset
   716
* Simplifier:
1a6c9c6a3f8e 2. The simplifier now knows a little bit about nat-arithmetic.
nipkow
parents: 5651
diff changeset
   717
  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
   718
     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
   719
        simplify.
1a6c9c6a3f8e 2. The simplifier now knows a little bit about nat-arithmetic.
nipkow
parents: 5651
diff changeset
   720
     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
   721
        rotate premises to achieve further simplification.
1a6c9c6a3f8e 2. The simplifier now knows a little bit about nat-arithmetic.
nipkow
parents: 5651
diff changeset
   722
     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
   723
     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
   724
  2. The simplifier now knows a little bit about nat-arithmetic.
4880
312115d20c45 *** empty log message ***
nipkow
parents: 4879
diff changeset
   725
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   726
* Classical reasoner: wrapper mechanism for the classical reasoner now
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   727
allows for selected deletion of wrappers, by introduction of names for
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   728
wrapper functionals.  This implies that addbefore, addSbefore,
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   729
addaltern, and addSaltern now take a pair (name, tactic) as argument,
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   730
and that adding two tactics with the same name overwrites the first
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   731
one (emitting a warning).
4824
df8fc4626a9e *** empty log message ***
oheimb
parents: 4806
diff changeset
   732
  type wrapper = (int -> tactic) -> (int -> tactic)
4649
89ad3eb863a1 changed wrapper mechanism of classical reasoner
oheimb
parents: 4575
diff changeset
   733
  setWrapper, setSWrapper, compWrapper and compSWrapper are replaced by
4824
df8fc4626a9e *** empty log message ***
oheimb
parents: 4806
diff changeset
   734
  addWrapper, addSWrapper: claset * (string * wrapper) -> claset
df8fc4626a9e *** empty log message ***
oheimb
parents: 4806
diff changeset
   735
  delWrapper, delSWrapper: claset *  string            -> claset
4649
89ad3eb863a1 changed wrapper mechanism of classical reasoner
oheimb
parents: 4575
diff changeset
   736
  getWrapper is renamed to appWrappers, getSWrapper to appSWrappers;
89ad3eb863a1 changed wrapper mechanism of classical reasoner
oheimb
parents: 4575
diff changeset
   737
5705
56f2030c46c6 tuned (all proofs are INSTABLE by David's definition of instability);
wenzelm
parents: 5671
diff changeset
   738
* Classical reasoner: addbefore/addSbefore now have APPEND/ORELSE
5726
wenzelm
parents: 5722
diff changeset
   739
semantics; addbefore now affects only the unsafe part of step_tac
wenzelm
parents: 5722
diff changeset
   740
etc.; this affects addss/auto_tac/force_tac, so EXISTING PROOFS MAY
wenzelm
parents: 5722
diff changeset
   741
FAIL, but proofs should be fixable easily, e.g. by replacing Auto_tac
wenzelm
parents: 5722
diff changeset
   742
by Force_tac;
5524
38f2a518a811 *** empty log message ***
oheimb
parents: 5490
diff changeset
   743
5726
wenzelm
parents: 5722
diff changeset
   744
* Classical reasoner: setwrapper to setWrapper and compwrapper to
wenzelm
parents: 5722
diff changeset
   745
compWrapper; added safe wrapper (and access functions for it);
5524
38f2a518a811 *** empty log message ***
oheimb
parents: 5490
diff changeset
   746
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   747
* HOL/split_all_tac is now much faster and fails if there is nothing
5726
wenzelm
parents: 5722
diff changeset
   748
to split.  Some EXISTING PROOFS MAY REQUIRE ADAPTION because the order
wenzelm
parents: 5722
diff changeset
   749
and the names of the automatically generated variables have changed.
wenzelm
parents: 5722
diff changeset
   750
split_all_tac has moved within claset() from unsafe wrappers to safe
wenzelm
parents: 5722
diff changeset
   751
wrappers, which means that !!-bound variables are split much more
wenzelm
parents: 5722
diff changeset
   752
aggressively, and safe_tac and clarify_tac now split such variables.
wenzelm
parents: 5722
diff changeset
   753
If this splitting is not appropriate, use delSWrapper "split_all_tac".
wenzelm
parents: 5722
diff changeset
   754
Note: the same holds for record_split_tac, which does the job of
wenzelm
parents: 5722
diff changeset
   755
split_all_tac for record fields.
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   756
5726
wenzelm
parents: 5722
diff changeset
   757
* HOL/Simplifier: Rewrite rules for case distinctions can now be added
wenzelm
parents: 5722
diff changeset
   758
permanently to the default simpset using Addsplits just like
wenzelm
parents: 5722
diff changeset
   759
Addsimps. They can be removed via Delsplits just like
wenzelm
parents: 5722
diff changeset
   760
Delsimps. Lower-case versions are also available.
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   761
5726
wenzelm
parents: 5722
diff changeset
   762
* HOL/Simplifier: The rule split_if is now part of the default
wenzelm
parents: 5722
diff changeset
   763
simpset. This means that the simplifier will eliminate all occurrences
wenzelm
parents: 5722
diff changeset
   764
of if-then-else in the conclusion of a goal. To prevent this, you can
wenzelm
parents: 5722
diff changeset
   765
either remove split_if completely from the default simpset by
wenzelm
parents: 5722
diff changeset
   766
`Delsplits [split_if]' or remove it in a specific call of the
wenzelm
parents: 5722
diff changeset
   767
simplifier using `... delsplits [split_if]'.  You can also add/delete
wenzelm
parents: 5722
diff changeset
   768
other case splitting rules to/from the default simpset: every datatype
wenzelm
parents: 5722
diff changeset
   769
generates suitable rules `split_t_case' and `split_t_case_asm' (where
wenzelm
parents: 5722
diff changeset
   770
t is the name of the datatype).
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   771
5726
wenzelm
parents: 5722
diff changeset
   772
* Classical reasoner / Simplifier combination: new force_tac (and
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   773
derivatives Force_tac, force) combines rewriting and classical
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   774
reasoning (and whatever other tools) similarly to auto_tac, but is
5726
wenzelm
parents: 5722
diff changeset
   775
aimed to solve the given subgoal completely.
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   776
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   777
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   778
*** General ***
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   779
5217
wenzelm
parents: 5214
diff changeset
   780
* new top-level commands `Goal' and `Goalw' that improve upon `goal'
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   781
and `goalw': the theory is no longer needed as an explicit argument -
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   782
the current theory context is used; assumptions are no longer returned
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   783
at the ML-level unless one of them starts with ==> or !!; it is
5217
wenzelm
parents: 5214
diff changeset
   784
recommended to convert to these new commands using isatool fixgoal
wenzelm
parents: 5214
diff changeset
   785
(backup your sources first!);
4842
0afcae75b34a *** empty log message ***
wenzelm
parents: 4838
diff changeset
   786
5217
wenzelm
parents: 5214
diff changeset
   787
* new top-level commands 'thm' and 'thms' for retrieving theorems from
5207
wenzelm
parents: 5160
diff changeset
   788
the current theory context, and 'theory' to lookup stored theories;
4806
79cc986bc4d7 bug fixes
paulson
parents: 4801
diff changeset
   789
5722
c669e2161b08 locales
paulson
parents: 5710
diff changeset
   790
* new theory section 'locale' for declaring constants, assumptions and
c669e2161b08 locales
paulson
parents: 5710
diff changeset
   791
definitions that have local scope;
c669e2161b08 locales
paulson
parents: 5710
diff changeset
   792
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   793
* new theory section 'nonterminals' for purely syntactic types;
4858
4b15e9e1b3a5 new theory section 'nonterminals';
wenzelm
parents: 4842
diff changeset
   794
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   795
* new theory section 'setup' for generic ML setup functions
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   796
(e.g. package initialization);
4869
f3d30c02c1db new theory section 'setup';
wenzelm
parents: 4858
diff changeset
   797
5131
dd4ac220b8b4 the distribution now includes Isabelle icons: see
wenzelm
parents: 5128
diff changeset
   798
* the distribution now includes Isabelle icons: see
dd4ac220b8b4 the distribution now includes Isabelle icons: see
wenzelm
parents: 5128
diff changeset
   799
lib/logo/isabelle-{small,tiny}.xpm;
dd4ac220b8b4 the distribution now includes Isabelle icons: see
wenzelm
parents: 5128
diff changeset
   800
5363
0cf15843b82f isatool install;
wenzelm
parents: 5332
diff changeset
   801
* isatool install - install binaries with absolute references to
0cf15843b82f isatool install;
wenzelm
parents: 5332
diff changeset
   802
ISABELLE_HOME/bin;
0cf15843b82f isatool install;
wenzelm
parents: 5332
diff changeset
   803
5572
53c6ea1e6d94 isatool logo;
wenzelm
parents: 5541
diff changeset
   804
* isatool logo -- create instances of the Isabelle logo (as EPS);
53c6ea1e6d94 isatool logo;
wenzelm
parents: 5541
diff changeset
   805
5407
b450fea6d70c * print mode 'emacs' reserved for Isamode;
wenzelm
parents: 5397
diff changeset
   806
* print mode 'emacs' reserved for Isamode;
b450fea6d70c * print mode 'emacs' reserved for Isamode;
wenzelm
parents: 5397
diff changeset
   807
5726
wenzelm
parents: 5722
diff changeset
   808
* support multiple print (ast) translations per constant name;
wenzelm
parents: 5722
diff changeset
   809
6925
8d4d45ec6a3d theorems involving oracles are now printed with a suffixed [!];
wenzelm
parents: 6922
diff changeset
   810
* theorems involving oracles are now printed with a suffixed [!];
8d4d45ec6a3d theorems involving oracles are now printed with a suffixed [!];
wenzelm
parents: 6922
diff changeset
   811
4711
75a9ef36b1fe removed pred;
wenzelm
parents: 4683
diff changeset
   812
4661
paulson
parents: 4655
diff changeset
   813
*** HOL ***
paulson
parents: 4655
diff changeset
   814
5710
wenzelm
parents: 5709
diff changeset
   815
* there is now a tutorial on Isabelle/HOL (do 'isatool doc tutorial');
5709
35b07f8e67b6 Tutorial
nipkow
parents: 5705
diff changeset
   816
5217
wenzelm
parents: 5214
diff changeset
   817
* HOL/inductive package reorganized and improved: now supports mutual
5267
41a01176b9de disjointness
paulson
parents: 5251
diff changeset
   818
definitions such as
5217
wenzelm
parents: 5214
diff changeset
   819
wenzelm
parents: 5214
diff changeset
   820
  inductive EVEN ODD
wenzelm
parents: 5214
diff changeset
   821
    intrs
wenzelm
parents: 5214
diff changeset
   822
      null "0 : EVEN"
wenzelm
parents: 5214
diff changeset
   823
      oddI "n : EVEN ==> Suc n : ODD"
wenzelm
parents: 5214
diff changeset
   824
      evenI "n : ODD ==> Suc n : EVEN"
wenzelm
parents: 5214
diff changeset
   825
wenzelm
parents: 5214
diff changeset
   826
new theorem list "elims" contains an elimination rule for each of the
wenzelm
parents: 5214
diff changeset
   827
recursive sets; inductive definitions now handle disjunctive premises
wenzelm
parents: 5214
diff changeset
   828
correctly (also ZF);
5214
75c6392d1274 Adapted to new datatype package.
berghofe
parents: 5207
diff changeset
   829
5217
wenzelm
parents: 5214
diff changeset
   830
INCOMPATIBILITIES: requires Inductive as an ancestor; component
wenzelm
parents: 5214
diff changeset
   831
"mutual_induct" no longer exists - the induction rule is always
wenzelm
parents: 5214
diff changeset
   832
contained in "induct";
wenzelm
parents: 5214
diff changeset
   833
wenzelm
parents: 5214
diff changeset
   834
wenzelm
parents: 5214
diff changeset
   835
* HOL/datatype package re-implemented and greatly improved: now
5267
41a01176b9de disjointness
paulson
parents: 5251
diff changeset
   836
supports mutually recursive datatypes such as
5217
wenzelm
parents: 5214
diff changeset
   837
wenzelm
parents: 5214
diff changeset
   838
  datatype
wenzelm
parents: 5214
diff changeset
   839
    'a aexp = IF_THEN_ELSE ('a bexp) ('a aexp) ('a aexp)
wenzelm
parents: 5214
diff changeset
   840
            | SUM ('a aexp) ('a aexp)
wenzelm
parents: 5214
diff changeset
   841
            | DIFF ('a aexp) ('a aexp)
wenzelm
parents: 5214
diff changeset
   842
            | NUM 'a
wenzelm
parents: 5214
diff changeset
   843
  and
wenzelm
parents: 5214
diff changeset
   844
    'a bexp = LESS ('a aexp) ('a aexp)
wenzelm
parents: 5214
diff changeset
   845
            | AND ('a bexp) ('a bexp)
wenzelm
parents: 5214
diff changeset
   846
            | OR ('a bexp) ('a bexp)
wenzelm
parents: 5214
diff changeset
   847
5267
41a01176b9de disjointness
paulson
parents: 5251
diff changeset
   848
as well as indirectly recursive datatypes such as
5214
75c6392d1274 Adapted to new datatype package.
berghofe
parents: 5207
diff changeset
   849
5217
wenzelm
parents: 5214
diff changeset
   850
  datatype
wenzelm
parents: 5214
diff changeset
   851
    ('a, 'b) term = Var 'a
wenzelm
parents: 5214
diff changeset
   852
                  | App 'b ((('a, 'b) term) list)
5214
75c6392d1274 Adapted to new datatype package.
berghofe
parents: 5207
diff changeset
   853
5217
wenzelm
parents: 5214
diff changeset
   854
The new tactic  mutual_induct_tac [<var_1>, ..., <var_n>] i  performs
wenzelm
parents: 5214
diff changeset
   855
induction on mutually / indirectly recursive datatypes.
wenzelm
parents: 5214
diff changeset
   856
wenzelm
parents: 5214
diff changeset
   857
Primrec equations are now stored in theory and can be accessed via
wenzelm
parents: 5214
diff changeset
   858
<function_name>.simps.
wenzelm
parents: 5214
diff changeset
   859
wenzelm
parents: 5214
diff changeset
   860
INCOMPATIBILITIES:
5214
75c6392d1274 Adapted to new datatype package.
berghofe
parents: 5207
diff changeset
   861
5217
wenzelm
parents: 5214
diff changeset
   862
  - Theories using datatypes must now have theory Datatype as an
wenzelm
parents: 5214
diff changeset
   863
    ancestor.
wenzelm
parents: 5214
diff changeset
   864
  - The specific <typename>.induct_tac no longer exists - use the
wenzelm
parents: 5214
diff changeset
   865
    generic induct_tac instead.
5226
89934cd022a9 Replaced nat.exhaustion by nat.exhaust
berghofe
parents: 5217
diff changeset
   866
  - natE has been renamed to nat.exhaust - use exhaust_tac
5217
wenzelm
parents: 5214
diff changeset
   867
    instead of res_inst_tac ... natE. Note that the variable
5226
89934cd022a9 Replaced nat.exhaustion by nat.exhaust
berghofe
parents: 5217
diff changeset
   868
    names in nat.exhaust differ from the names in natE, this
5217
wenzelm
parents: 5214
diff changeset
   869
    may cause some "fragile" proofs to fail.
wenzelm
parents: 5214
diff changeset
   870
  - The theorems split_<typename>_case and split_<typename>_case_asm
wenzelm
parents: 5214
diff changeset
   871
    have been renamed to <typename>.split and <typename>.split_asm.
wenzelm
parents: 5214
diff changeset
   872
  - Since default sorts of type variables are now handled correctly,
wenzelm
parents: 5214
diff changeset
   873
    some datatype definitions may have to be annotated with explicit
wenzelm
parents: 5214
diff changeset
   874
    sort constraints.
wenzelm
parents: 5214
diff changeset
   875
  - Primrec definitions no longer require function name and type
wenzelm
parents: 5214
diff changeset
   876
    of recursive argument.
5214
75c6392d1274 Adapted to new datatype package.
berghofe
parents: 5207
diff changeset
   877
5217
wenzelm
parents: 5214
diff changeset
   878
Consider using isatool fixdatatype to adapt your theories and proof
wenzelm
parents: 5214
diff changeset
   879
scripts to the new package (backup your sources first!).
wenzelm
parents: 5214
diff changeset
   880
wenzelm
parents: 5214
diff changeset
   881
5726
wenzelm
parents: 5722
diff changeset
   882
* HOL/record package: considerably improved implementation; now
wenzelm
parents: 5722
diff changeset
   883
includes concrete syntax for record types, terms, updates; theorems
wenzelm
parents: 5722
diff changeset
   884
for surjective pairing and splitting !!-bound record variables; proof
wenzelm
parents: 5722
diff changeset
   885
support is as follows:
wenzelm
parents: 5722
diff changeset
   886
wenzelm
parents: 5722
diff changeset
   887
  1) standard conversions (selectors or updates applied to record
wenzelm
parents: 5722
diff changeset
   888
constructor terms) are part of the standard simpset;
wenzelm
parents: 5722
diff changeset
   889
wenzelm
parents: 5722
diff changeset
   890
  2) inject equations of the form ((x, y) = (x', y')) == x=x' & y=y' are
wenzelm
parents: 5722
diff changeset
   891
made part of standard simpset and claset via addIffs;
wenzelm
parents: 5722
diff changeset
   892
wenzelm
parents: 5722
diff changeset
   893
  3) a tactic for record field splitting (record_split_tac) is part of
wenzelm
parents: 5722
diff changeset
   894
the standard claset (addSWrapper);
wenzelm
parents: 5722
diff changeset
   895
wenzelm
parents: 5722
diff changeset
   896
To get a better idea about these rules you may retrieve them via
wenzelm
parents: 5722
diff changeset
   897
something like 'thms "foo.simps"' or 'thms "foo.iffs"', where "foo" is
wenzelm
parents: 5722
diff changeset
   898
the name of your record type.
wenzelm
parents: 5722
diff changeset
   899
wenzelm
parents: 5722
diff changeset
   900
The split tactic 3) conceptually simplifies by the following rule:
wenzelm
parents: 5722
diff changeset
   901
wenzelm
parents: 5722
diff changeset
   902
  "(!!x. PROP ?P x) == (!!a b. PROP ?P (a, b))"
wenzelm
parents: 5722
diff changeset
   903
wenzelm
parents: 5722
diff changeset
   904
Thus any record variable that is bound by meta-all will automatically
wenzelm
parents: 5722
diff changeset
   905
blow up into some record constructor term, consequently the
wenzelm
parents: 5722
diff changeset
   906
simplifications of 1), 2) apply.  Thus force_tac, auto_tac etc. shall
wenzelm
parents: 5722
diff changeset
   907
solve record problems automatically.
wenzelm
parents: 5722
diff changeset
   908
5214
75c6392d1274 Adapted to new datatype package.
berghofe
parents: 5207
diff changeset
   909
5125
463a0e9df5b5 reorganized the main HOL image;
wenzelm
parents: 5109
diff changeset
   910
* reorganized the main HOL image: HOL/Integ and String loaded by
463a0e9df5b5 reorganized the main HOL image;
wenzelm
parents: 5109
diff changeset
   911
default; theory Main includes everything;
463a0e9df5b5 reorganized the main HOL image;
wenzelm
parents: 5109
diff changeset
   912
5650
38bda28c68a2 integer simprocs
paulson
parents: 5572
diff changeset
   913
* automatic simplification of integer sums and comparisons, using cancellation;
38bda28c68a2 integer simprocs
paulson
parents: 5572
diff changeset
   914
5526
e7617b57a3e6 *** empty log message ***
oheimb
parents: 5524
diff changeset
   915
* added option_map_eq_Some and not_Some_eq to the default simpset and claset;
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   916
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   917
* added disj_not1 = "(~P | Q) = (P --> Q)" to the default simpset;
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   918
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   919
* many new identities for unions, intersections, set difference, etc.;
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   920
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   921
* expand_if, expand_split, expand_sum_case and expand_nat_case are now
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   922
called split_if, split_split, split_sum_case and split_nat_case (to go
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   923
with add/delsplits);
5125
463a0e9df5b5 reorganized the main HOL image;
wenzelm
parents: 5109
diff changeset
   924
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   925
* HOL/Prod introduces simplification procedure unit_eq_proc rewriting
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   926
(?x::unit) = (); this is made part of the default simpset, which COULD
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   927
MAKE EXISTING PROOFS FAIL under rare circumstances (consider
5207
wenzelm
parents: 5160
diff changeset
   928
'Delsimprocs [unit_eq_proc];' as last resort); also note that
wenzelm
parents: 5160
diff changeset
   929
unit_abs_eta_conv is added in order to counter the effect of
wenzelm
parents: 5160
diff changeset
   930
unit_eq_proc on (%u::unit. f u), replacing it by f rather than by
wenzelm
parents: 5160
diff changeset
   931
%u.f();
5125
463a0e9df5b5 reorganized the main HOL image;
wenzelm
parents: 5109
diff changeset
   932
5217
wenzelm
parents: 5214
diff changeset
   933
* HOL/Fun INCOMPATIBILITY: `inj_onto' is now called `inj_on' (which
wenzelm
parents: 5214
diff changeset
   934
makes more sense);
5109
b3d18eb3ac20 Adapted to new inductive definition package.
berghofe
parents: 5106
diff changeset
   935
5475
410172655d64 equals0D
paulson
parents: 5428
diff changeset
   936
* HOL/Set INCOMPATIBILITY: rule `equals0D' is now a well-formed destruct rule;
410172655d64 equals0D
paulson
parents: 5428
diff changeset
   937
  It and 'sym RS equals0D' are now in the default  claset, giving automatic
410172655d64 equals0D
paulson
parents: 5428
diff changeset
   938
  disjointness reasoning but breaking a few old proofs.
5267
41a01176b9de disjointness
paulson
parents: 5251
diff changeset
   939
5217
wenzelm
parents: 5214
diff changeset
   940
* HOL/Relation INCOMPATIBILITY: renamed the relational operator r^-1
wenzelm
parents: 5214
diff changeset
   941
to 'converse' from 'inverse' (for compatibility with ZF and some
wenzelm
parents: 5214
diff changeset
   942
literature);
5085
8e5a7942fdea simplification procedure unit_eq_proc rewrites (?x::unit) = ();
wenzelm
parents: 5077
diff changeset
   943
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   944
* HOL/recdef can now declare non-recursive functions, with {} supplied as
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   945
the well-founded relation;
4838
196100237656 cleanup for split_all_tac as wrapper in claset()
oheimb
parents: 4835
diff changeset
   946
5490
85855f65d0c6 From Compl(A) to -A
paulson
parents: 5475
diff changeset
   947
* 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
   948
    Compl A.  The "Compl" syntax remains available as input syntax for this
85855f65d0c6 From Compl(A) to -A
paulson
parents: 5475
diff changeset
   949
    release ONLY.
85855f65d0c6 From Compl(A) to -A
paulson
parents: 5475
diff changeset
   950
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   951
* HOL/Update: new theory of function updates:
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   952
    f(a:=b) == %x. if x=a then b else f x
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   953
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
   954
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   955
* HOL/Vimage: new theory for inverse image of a function, syntax f-``B;
4899
447d6b2956ba HOL/Update
paulson
parents: 4880
diff changeset
   956
5282
80c75c862a8f *** empty log message ***
nipkow
parents: 5275
diff changeset
   957
* HOL/List:
80c75c862a8f *** empty log message ***
nipkow
parents: 5275
diff changeset
   958
  - new function list_update written xs[i:=v] that updates the i-th
80c75c862a8f *** empty log message ***
nipkow
parents: 5275
diff changeset
   959
    list position. May also be iterated as in xs[i:=a,j:=b,...].
5428
5a6c4f666a25 Function 'upt'
nipkow
parents: 5407
diff changeset
   960
  - new function `upt' written [i..j(] which generates the list
5a6c4f666a25 Function 'upt'
nipkow
parents: 5407
diff changeset
   961
    [i,i+1,...,j-1], i.e. the upper bound is excluded. To include the upper
5a6c4f666a25 Function 'upt'
nipkow
parents: 5407
diff changeset
   962
    bound write [i..j], which is a shorthand for [i..j+1(].
5282
80c75c862a8f *** empty log message ***
nipkow
parents: 5275
diff changeset
   963
  - new lexicographic orderings and corresponding wellfoundedness theorems.
4779
paulson
parents: 4766
diff changeset
   964
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   965
* HOL/Arith:
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   966
  - removed 'pred' (predecessor) function;
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   967
  - generalized some theorems about n-1;
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   968
  - many new laws about "div" and "mod";
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   969
  - new laws about greatest common divisors (see theory ex/Primes);
4766
9658aab68363 *** empty log message ***
oheimb
parents: 4747
diff changeset
   970
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   971
* HOL/Relation: renamed the relational operator r^-1 "converse"
4842
0afcae75b34a *** empty log message ***
wenzelm
parents: 4838
diff changeset
   972
instead of "inverse";
4711
75a9ef36b1fe removed pred;
wenzelm
parents: 4683
diff changeset
   973
5651
ca45d6126c8a *** empty log message ***
nipkow
parents: 5650
diff changeset
   974
* HOL/Induct/Multiset: a theory of multisets, including the wellfoundedness
ca45d6126c8a *** empty log message ***
nipkow
parents: 5650
diff changeset
   975
  of the multiset ordering;
ca45d6126c8a *** empty log message ***
nipkow
parents: 5650
diff changeset
   976
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   977
* directory HOL/Real: a construction of the reals using Dedekind cuts
5651
ca45d6126c8a *** empty log message ***
nipkow
parents: 5650
diff changeset
   978
  (not included by default);
4835
f90a427d903f *** empty log message ***
nipkow
parents: 4828
diff changeset
   979
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   980
* directory HOL/UNITY: Chandy and Misra's UNITY formalism;
4711
75a9ef36b1fe removed pred;
wenzelm
parents: 4683
diff changeset
   981
5651
ca45d6126c8a *** empty log message ***
nipkow
parents: 5650
diff changeset
   982
* directory HOL/Hoare: a new version of Hoare logic which permits many-sorted
ca45d6126c8a *** empty log message ***
nipkow
parents: 5650
diff changeset
   983
  programs, i.e. different program variables may have different types.
ca45d6126c8a *** empty log message ***
nipkow
parents: 5650
diff changeset
   984
5142
c56aa8b59dc0 new stac
paulson
parents: 5140
diff changeset
   985
* calling (stac rew i) now fails if "rew" has no effect on the goal
c56aa8b59dc0 new stac
paulson
parents: 5140
diff changeset
   986
  [previously, this check worked only if the rewrite rule was unconditional]
5308
paulson
parents: 5282
diff changeset
   987
  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
   988
5363
0cf15843b82f isatool install;
wenzelm
parents: 5332
diff changeset
   989
4879
58656c6a3551 "let" is no longer restricted to FOL terms and allows any logical terms
paulson
parents: 4869
diff changeset
   990
*** ZF ***
58656c6a3551 "let" is no longer restricted to FOL terms and allows any logical terms
paulson
parents: 4869
diff changeset
   991
5332
paulson
parents: 5308
diff changeset
   992
* theory Main includes everything; INCOMPATIBILITY: theory ZF.thy contains
paulson
parents: 5308
diff changeset
   993
  only the theorems proved on ZF.ML;
5160
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
   994
5475
410172655d64 equals0D
paulson
parents: 5428
diff changeset
   995
* ZF INCOMPATIBILITY: rule `equals0D' is now a well-formed destruct rule;
410172655d64 equals0D
paulson
parents: 5428
diff changeset
   996
  It and 'sym RS equals0D' are now in the default  claset, giving automatic
410172655d64 equals0D
paulson
parents: 5428
diff changeset
   997
  disjointness reasoning but breaking a few old proofs.
5267
41a01176b9de disjointness
paulson
parents: 5251
diff changeset
   998
5160
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
   999
* ZF/Update: new theory of function updates
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
  1000
    with default rewrite rule  f(x:=y) ` z = if(z=x, y, f`z)
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
  1001
  may also be iterated as in f(a:=b,c:=d,...);
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
  1002
4879
58656c6a3551 "let" is no longer restricted to FOL terms and allows any logical terms
paulson
parents: 4869
diff changeset
  1003
* 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
  1004
5142
c56aa8b59dc0 new stac
paulson
parents: 5140
diff changeset
  1005
* calling (stac rew i) now fails if "rew" has no effect on the goal
c56aa8b59dc0 new stac
paulson
parents: 5140
diff changeset
  1006
  [previously, this check worked only if the rewrite rule was unconditional]
5308
paulson
parents: 5282
diff changeset
  1007
  Now rew can involve either definitions or equalities (either == or =).
5142
c56aa8b59dc0 new stac
paulson
parents: 5140
diff changeset
  1008
5160
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
  1009
* case_tac provided for compatibility with HOL
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
  1010
    (like the old excluded_middle_tac, but with subgoals swapped)
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
  1011
4842
0afcae75b34a *** empty log message ***
wenzelm
parents: 4838
diff changeset
  1012
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1013
*** Internal programming interfaces ***
5002
7b4c2a153738 * improved the theory data mechanism to support real encapsulation;
wenzelm
parents: 4981
diff changeset
  1014
5251
wenzelm
parents: 5226
diff changeset
  1015
* Pure: several new basic modules made available for general use, see
wenzelm
parents: 5226
diff changeset
  1016
also src/Pure/README;
5207
wenzelm
parents: 5160
diff changeset
  1017
5008
6f56d9650ee9 new type-safe user interface for theory data;
wenzelm
parents: 5002
diff changeset
  1018
* improved the theory data mechanism to support encapsulation (data
6f56d9650ee9 new type-safe user interface for theory data;
wenzelm
parents: 5002
diff changeset
  1019
kind name replaced by private Object.kind, acting as authorization
5373
wenzelm
parents: 5363
diff changeset
  1020
key); new type-safe user interface via functor TheoryDataFun; generic
wenzelm
parents: 5363
diff changeset
  1021
print_data function becomes basically useless;
5002
7b4c2a153738 * improved the theory data mechanism to support real encapsulation;
wenzelm
parents: 4981
diff changeset
  1022
5251
wenzelm
parents: 5226
diff changeset
  1023
* removed global_names compatibility flag -- all theory declarations
wenzelm
parents: 5226
diff changeset
  1024
are qualified by default;
wenzelm
parents: 5226
diff changeset
  1025
5085
8e5a7942fdea simplification procedure unit_eq_proc rewrites (?x::unit) = ();
wenzelm
parents: 5077
diff changeset
  1026
* module Pure/Syntax now offers quote / antiquote translation
8e5a7942fdea simplification procedure unit_eq_proc rewrites (?x::unit) = ();
wenzelm
parents: 5077
diff changeset
  1027
functions (useful for Hoare logic etc. with implicit dependencies);
5373
wenzelm
parents: 5363
diff changeset
  1028
see HOL/ex/Antiquote for an example use;
5085
8e5a7942fdea simplification procedure unit_eq_proc rewrites (?x::unit) = ();
wenzelm
parents: 5077
diff changeset
  1029
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1030
* Simplifier now offers conversions (asm_)(full_)rewrite: simpset ->
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1031
cterm -> thm;
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1032
5207
wenzelm
parents: 5160
diff changeset
  1033
* new tactical CHANGED_GOAL for checking that a tactic modifies a
wenzelm
parents: 5160
diff changeset
  1034
subgoal;
5142
c56aa8b59dc0 new stac
paulson
parents: 5140
diff changeset
  1035
5251
wenzelm
parents: 5226
diff changeset
  1036
* Display.print_goals function moved to Locale.print_goals;
wenzelm
parents: 5226
diff changeset
  1037
5731
f84dc3b811e9 current_goals_markers;
wenzelm
parents: 5726
diff changeset
  1038
* standard print function for goals supports current_goals_markers
f84dc3b811e9 current_goals_markers;
wenzelm
parents: 5726
diff changeset
  1039
variable for marking begin of proof, end of proof, start of goal; the
f84dc3b811e9 current_goals_markers;
wenzelm
parents: 5726
diff changeset
  1040
default is ("", "", ""); setting current_goals_markers := ("<proof>",
f84dc3b811e9 current_goals_markers;
wenzelm
parents: 5726
diff changeset
  1041
"</proof>", "<goal>") causes SGML like tagged proof state printing,
f84dc3b811e9 current_goals_markers;
wenzelm
parents: 5726
diff changeset
  1042
for example;
f84dc3b811e9 current_goals_markers;
wenzelm
parents: 5726
diff changeset
  1043
5002
7b4c2a153738 * improved the theory data mechanism to support real encapsulation;
wenzelm
parents: 4981
diff changeset
  1044
7b4c2a153738 * improved the theory data mechanism to support real encapsulation;
wenzelm
parents: 4981
diff changeset
  1045
4410
wenzelm
parents: 4388
diff changeset
  1046
New in Isabelle98 (January 1998)
wenzelm
parents: 4388
diff changeset
  1047
--------------------------------
wenzelm
parents: 4388
diff changeset
  1048
wenzelm
parents: 4388
diff changeset
  1049
*** Overview of INCOMPATIBILITIES (see below for more details) ***
wenzelm
parents: 4388
diff changeset
  1050
wenzelm
parents: 4388
diff changeset
  1051
* changed lexical syntax of terms / types: dots made part of long
wenzelm
parents: 4388
diff changeset
  1052
identifiers, e.g. "%x.x" no longer possible, should be "%x. x";
wenzelm
parents: 4388
diff changeset
  1053
wenzelm
parents: 4388
diff changeset
  1054
* simpset (and claset) reference variable replaced by functions
wenzelm
parents: 4388
diff changeset
  1055
simpset / simpset_ref;
wenzelm
parents: 4388
diff changeset
  1056
wenzelm
parents: 4388
diff changeset
  1057
* no longer supports theory aliases (via merge) and non-trivial
wenzelm
parents: 4388
diff changeset
  1058
implicit merge of thms' signatures;
wenzelm
parents: 4388
diff changeset
  1059
wenzelm
parents: 4388
diff changeset
  1060
* most internal names of constants changed due to qualified names;
wenzelm
parents: 4388
diff changeset
  1061
wenzelm
parents: 4388
diff changeset
  1062
* changed Pure/Sequence interface (see Pure/seq.ML);
wenzelm
parents: 4388
diff changeset
  1063
3454
40b1287347d7 removed;
wenzelm
parents: 3338
diff changeset
  1064
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1065
*** General Changes ***
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1066
4174
wenzelm
parents: 4154
diff changeset
  1067
* hierachically structured name spaces (for consts, types, axms, thms
3943
b6e0c90f3bf4 tuned qualified names;
wenzelm
parents: 3930
diff changeset
  1068
etc.); new lexical class 'longid' (e.g. Foo.bar.x) may render much of
4108
1610602a2964 isatool fixclasimp;
wenzelm
parents: 4070
diff changeset
  1069
old input syntactically incorrect (e.g. "%x.x"); COMPATIBILITY:
1610602a2964 isatool fixclasimp;
wenzelm
parents: 4070
diff changeset
  1070
isatool fixdots ensures space after dots (e.g. "%x. x"); set
4174
wenzelm
parents: 4154
diff changeset
  1071
long_names for fully qualified output names; NOTE: ML programs
wenzelm
parents: 4154
diff changeset
  1072
(special tactics, packages etc.) referring to internal names may have
wenzelm
parents: 4154
diff changeset
  1073
to be adapted to cope with fully qualified names; in case of severe
wenzelm
parents: 4154
diff changeset
  1074
backward campatibility problems try setting 'global_names' at compile
wenzelm
parents: 4154
diff changeset
  1075
time to have enrything declared within a flat name space; one may also
wenzelm
parents: 4154
diff changeset
  1076
fine tune name declarations in theories via the 'global' and 'local'
wenzelm
parents: 4154
diff changeset
  1077
section;
4108
1610602a2964 isatool fixclasimp;
wenzelm
parents: 4070
diff changeset
  1078
1610602a2964 isatool fixclasimp;
wenzelm
parents: 4070
diff changeset
  1079
* reimplemented the implicit simpset and claset using the new anytype
1610602a2964 isatool fixclasimp;
wenzelm
parents: 4070
diff changeset
  1080
data filed in signatures; references simpset:simpset ref etc. are
1610602a2964 isatool fixclasimp;
wenzelm
parents: 4070
diff changeset
  1081
replaced by functions simpset:unit->simpset and
1610602a2964 isatool fixclasimp;
wenzelm
parents: 4070
diff changeset
  1082
simpset_ref:unit->simpset ref; COMPATIBILITY: use isatool fixclasimp
1610602a2964 isatool fixclasimp;
wenzelm
parents: 4070
diff changeset
  1083
to patch your ML files accordingly;
3856
177c64693954 rearranged and added TLA
paulson
parents: 3851
diff changeset
  1084
3857
16198fde5af5 browser info;
wenzelm
parents: 3856
diff changeset
  1085
* HTML output now includes theory graph data for display with Java
16198fde5af5 browser info;
wenzelm
parents: 3856
diff changeset
  1086
applet or isatool browser; data generated automatically via isatool
3901
wenzelm
parents: 3871
diff changeset
  1087
usedir (see -i option, ISABELLE_USEDIR_OPTIONS);
3857
16198fde5af5 browser info;
wenzelm
parents: 3856
diff changeset
  1088
3856
177c64693954 rearranged and added TLA
paulson
parents: 3851
diff changeset
  1089
* defs may now be conditional; improved rewrite_goals_tac to handle
177c64693954 rearranged and added TLA
paulson
parents: 3851
diff changeset
  1090
conditional equations;
177c64693954 rearranged and added TLA
paulson
parents: 3851
diff changeset
  1091
4174
wenzelm
parents: 4154
diff changeset
  1092
* defs now admits additional type arguments, using TYPE('a) syntax;
wenzelm
parents: 4154
diff changeset
  1093
3901
wenzelm
parents: 3871
diff changeset
  1094
* theory aliases via merge (e.g. M=A+B+C) no longer supported, always
wenzelm
parents: 3871
diff changeset
  1095
creates a new theory node; implicit merge of thms' signatures is
4112
wenzelm
parents: 4108
diff changeset
  1096
restricted to 'trivial' ones; COMPATIBILITY: one may have to use
3901
wenzelm
parents: 3871
diff changeset
  1097
transfer:theory->thm->thm in (rare) cases;
wenzelm
parents: 3871
diff changeset
  1098
3968
ec138de716d9 improved handling of draft signatures / theories; draft thms (and
wenzelm
parents: 3964
diff changeset
  1099
* improved handling of draft signatures / theories; draft thms (and
ec138de716d9 improved handling of draft signatures / theories; draft thms (and
wenzelm
parents: 3964
diff changeset
  1100
ctyps, cterms) are automatically promoted to real ones;
ec138de716d9 improved handling of draft signatures / theories; draft thms (and
wenzelm
parents: 3964
diff changeset
  1101
3901
wenzelm
parents: 3871
diff changeset
  1102
* slightly changed interfaces for oracles: admit many per theory, named
wenzelm
parents: 3871
diff changeset
  1103
(e.g. oracle foo = mlfun), additional name argument for invoke_oracle;
wenzelm
parents: 3871
diff changeset
  1104
wenzelm
parents: 3871
diff changeset
  1105
* print_goals: optional output of const types (set show_consts and
wenzelm
parents: 3871
diff changeset
  1106
show_types);
3851
fe9932a7cd46 print_goals: optional output of const types (set show_consts);
wenzelm
parents: 3846
diff changeset
  1107
4388
wenzelm
parents: 4381
diff changeset
  1108
* improved output of warnings (###) and errors (***);
3697
c5833dfcc2cc Pure: fixed idt/idts vs. pttrn/pttrns syntactic categories;
wenzelm
parents: 3671
diff changeset
  1109
4178
e64ff1c1bc70 subgoal_tac displays a warning if the new subgoal has type variables
paulson
parents: 4174
diff changeset
  1110
* 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
  1111
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1112
* removed old README and Makefiles;
3697
c5833dfcc2cc Pure: fixed idt/idts vs. pttrn/pttrns syntactic categories;
wenzelm
parents: 3671
diff changeset
  1113
3856
177c64693954 rearranged and added TLA
paulson
parents: 3851
diff changeset
  1114
* 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
  1115
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1116
* removed obsolete init_pps and init_database;
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1117
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1118
* deleted the obsolete tactical STATE, which was declared by
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1119
    fun STATE tacfun st = tacfun st st;
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1120
4388
wenzelm
parents: 4381
diff changeset
  1121
* cd and use now support path variables, e.g. $ISABELLE_HOME, or ~
wenzelm
parents: 4381
diff changeset
  1122
(which abbreviates $HOME);
4269
a045600f0c98 cd, use etc. now support path variables;
wenzelm
parents: 4207
diff changeset
  1123
a045600f0c98 cd, use etc. now support path variables;
wenzelm
parents: 4207
diff changeset
  1124
* changed Pure/Sequence interface (see Pure/seq.ML); COMPATIBILITY:
a045600f0c98 cd, use etc. now support path variables;
wenzelm
parents: 4207
diff changeset
  1125
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
  1126
qualified references to the Sequence structure only!);
a045600f0c98 cd, use etc. now support path variables;
wenzelm
parents: 4207
diff changeset
  1127
4381
wenzelm
parents: 4373
diff changeset
  1128
* use_thy no longer requires writable current directory; it always
wenzelm
parents: 4373
diff changeset
  1129
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
  1130
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1131
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1132
*** Classical Reasoner ***
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1133
3744
wenzelm
parents: 3719
diff changeset
  1134
* Clarify_tac, clarify_tac, clarify_step_tac, Clarify_step_tac: new
wenzelm
parents: 3719
diff changeset
  1135
tactics that use classical reasoning to simplify a subgoal without
wenzelm
parents: 3719
diff changeset
  1136
splitting it into several subgoals;
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1137
3719
6a142dab2a08 Safe_tac; qed_spec_mp in FOL
paulson
parents: 3715
diff changeset
  1138
* Safe_tac: like safe_tac but uses the default claset;
6a142dab2a08 Safe_tac; qed_spec_mp in FOL
paulson
parents: 3715
diff changeset
  1139
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1140
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1141
*** Simplifier ***
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1142
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1143
* added simplification meta rules:
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1144
    (asm_)(full_)simplify: simpset -> thm -> thm;
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1145
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1146
* simplifier.ML no longer part of Pure -- has to be loaded by object
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1147
logics (again);
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1148
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1149
* added prems argument to simplification procedures;
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1150
4325
e72cba5af6c5 addsplits now in FOL, ZF too
paulson
parents: 4269
diff changeset
  1151
* HOL, FOL, ZF: added infix function `addsplits':
e72cba5af6c5 addsplits now in FOL, ZF too
paulson
parents: 4269
diff changeset
  1152
  instead of `<simpset> setloop (split_tac <thms>)'
e72cba5af6c5 addsplits now in FOL, ZF too
paulson
parents: 4269
diff changeset
  1153
  you can simply write `<simpset> addsplits <thms>'
e72cba5af6c5 addsplits now in FOL, ZF too
paulson
parents: 4269
diff changeset
  1154
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1155
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1156
*** Syntax ***
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1157
4174
wenzelm
parents: 4154
diff changeset
  1158
* TYPE('a) syntax for type reflection terms;
wenzelm
parents: 4154
diff changeset
  1159
3985
wenzelm
parents: 3982
diff changeset
  1160
* no longer handles consts with name "" -- declare as 'syntax' instead;
3856
177c64693954 rearranged and added TLA
paulson
parents: 3851
diff changeset
  1161
177c64693954 rearranged and added TLA
paulson
parents: 3851
diff changeset
  1162
* pretty printer: changed order of mixfix annotation preference (again!);
3846
6061fa463784 hierachically structured name spaces;
wenzelm
parents: 3822
diff changeset
  1163
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1164
* Pure: fixed idt/idts vs. pttrn/pttrns syntactic categories;
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1165
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1166
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1167
*** HOL ***
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1168
5726
wenzelm
parents: 5722
diff changeset
  1169
* 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
  1170
  with `addloop' of the simplifier to faciliate case splitting in premises.
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1171
4035
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1172
* HOL/TLA: Stephan Merz's formalization of Lamport's Temporal Logic of Actions;
3985
wenzelm
parents: 3982
diff changeset
  1173
wenzelm
parents: 3982
diff changeset
  1174
* HOL/Auth: new protocol proofs including some for the Internet
4035
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1175
  protocol TLS;
3985
wenzelm
parents: 3982
diff changeset
  1176
4125
wenzelm
parents: 4123
diff changeset
  1177
* HOL/Map: new theory of `maps' a la VDM;
3982
2a903ba8d39e HOL/Map
nipkow
parents: 3968
diff changeset
  1178
4335
b0acd74da01d nat_cancel simprocs;
wenzelm
parents: 4325
diff changeset
  1179
* HOL/simplifier: simplification procedures nat_cancel_sums for
b0acd74da01d nat_cancel simprocs;
wenzelm
parents: 4325
diff changeset
  1180
cancelling out common nat summands from =, <, <= (in)equalities, or
b0acd74da01d nat_cancel simprocs;
wenzelm
parents: 4325
diff changeset
  1181
differences; simplification procedures nat_cancel_factor for
b0acd74da01d nat_cancel simprocs;
wenzelm
parents: 4325
diff changeset
  1182
cancelling common factor from =, <, <= (in)equalities over natural
4373
2f831a45d571 nat_cancel enabled by default;
wenzelm
parents: 4370
diff changeset
  1183
sums; nat_cancel contains both kinds of procedures, it is installed by
2f831a45d571 nat_cancel enabled by default;
wenzelm
parents: 4370
diff changeset
  1184
default in Arith.thy -- this COULD MAKE EXISTING PROOFS FAIL;
4335
b0acd74da01d nat_cancel simprocs;
wenzelm
parents: 4325
diff changeset
  1185
3580
04c6ae944b5e new simproc
nipkow
parents: 3579
diff changeset
  1186
* HOL/simplifier: terms of the form
4325
e72cba5af6c5 addsplits now in FOL, ZF too
paulson
parents: 4269
diff changeset
  1187
  `? x. P1(x) & ... & Pn(x) & x=t & Q1(x) & ... Qn(x)'  (or t=x)
3580
04c6ae944b5e new simproc
nipkow
parents: 3579
diff changeset
  1188
  are rewritten to
4035
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1189
  `P1(t) & ... & Pn(t) & Q1(t) & ... Qn(t)',
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1190
  and those of the form
4325
e72cba5af6c5 addsplits now in FOL, ZF too
paulson
parents: 4269
diff changeset
  1191
  `! 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
  1192
  are rewritten to
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1193
  `P1(t) & ... & Pn(t) & Q1(t) & ... Qn(t) --> R(t)',
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1194
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1195
* HOL/datatype
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1196
  Each datatype `t' now comes with a theorem `split_t_case' of the form
3580
04c6ae944b5e new simproc
nipkow
parents: 3579
diff changeset
  1197
4035
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1198
  P(t_case f1 ... fn x) =
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1199
     ( (!y1 ... ym1. x = C1 y1 ... ym1 --> P(f1 y1 ... ym1)) &
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1200
        ...
4189
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1201
       (!y1 ... ymn. x = Cn y1 ... ymn --> P(f1 y1 ... ymn))
4035
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1202
     )
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1203
4930
89271bc4e7ed extended addsplits and delsplits to handle also split rules for assumptions
oheimb
parents: 4915
diff changeset
  1204
  and a theorem `split_t_case_asm' of the form
4189
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1205
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1206
  P(t_case f1 ... fn x) =
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1207
    ~( (? y1 ... ym1. x = C1 y1 ... ym1 & ~P(f1 y1 ... ym1)) |
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1208
        ...
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1209
       (? y1 ... ymn. x = Cn y1 ... ymn & ~P(f1 y1 ... ymn))
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1210
     )
4930
89271bc4e7ed extended addsplits and delsplits to handle also split rules for assumptions
oheimb
parents: 4915
diff changeset
  1211
  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
  1212
  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
  1213
  split_list_case and split_option_case.
4189
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1214
4361
c77a484e4f95 pred -> -1
nipkow
parents: 4357
diff changeset
  1215
* HOL/Arithmetic:
c77a484e4f95 pred -> -1
nipkow
parents: 4357
diff changeset
  1216
  - `pred n' is automatically converted to `n-1'.
c77a484e4f95 pred -> -1
nipkow
parents: 4357
diff changeset
  1217
    Users are strongly encouraged not to use `pred' any longer,
c77a484e4f95 pred -> -1
nipkow
parents: 4357
diff changeset
  1218
    because it will disappear altogether at some point.
c77a484e4f95 pred -> -1
nipkow
parents: 4357
diff changeset
  1219
  - Users are strongly encouraged to write "0 < n" rather than
c77a484e4f95 pred -> -1
nipkow
parents: 4357
diff changeset
  1220
    "n ~= 0". Theorems and proof tools have been modified towards this
c77a484e4f95 pred -> -1
nipkow
parents: 4357
diff changeset
  1221
    `standard'.
4357
b852e2d2a39a n ~= 0 should become 0 < n
nipkow
parents: 4335
diff changeset
  1222
4502
337c073de95e nth -> !
nipkow
parents: 4410
diff changeset
  1223
* HOL/Lists:
337c073de95e nth -> !
nipkow
parents: 4410
diff changeset
  1224
  the function "set_of_list" has been renamed "set" (and its theorems too);
337c073de95e nth -> !
nipkow
parents: 4410
diff changeset
  1225
  the function "nth" now takes its arguments in the reverse order and
337c073de95e nth -> !
nipkow
parents: 4410
diff changeset
  1226
  has acquired the infix notation "!" as in "xs!n".
3570
d3662f90c453 set_of_list -> set
paulson
parents: 3567
diff changeset
  1227
4154
17a3a2c5a35f UNIV & UNION1
paulson
parents: 4125
diff changeset
  1228
* HOL/Set: UNIV is now a constant and is no longer translated to Compl{};
17a3a2c5a35f UNIV & UNION1
paulson
parents: 4125
diff changeset
  1229
17a3a2c5a35f UNIV & UNION1
paulson
parents: 4125
diff changeset
  1230
* 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
  1231
  specialist theorems (like UN1_I) are gone.  Similarly for (INT x.B x);
17a3a2c5a35f UNIV & UNION1
paulson
parents: 4125
diff changeset
  1232
4575
e59cf7d816fe HOL/record;
wenzelm
parents: 4502
diff changeset
  1233
* HOL/record: extensible records with schematic structural subtyping
e59cf7d816fe HOL/record;
wenzelm
parents: 4502
diff changeset
  1234
(single inheritance); EXPERIMENTAL version demonstrating the encoding,
e59cf7d816fe HOL/record;
wenzelm
parents: 4502
diff changeset
  1235
still lacks various theorems and concrete record syntax;
e59cf7d816fe HOL/record;
wenzelm
parents: 4502
diff changeset
  1236
4125
wenzelm
parents: 4123
diff changeset
  1237
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1238
*** HOLCF ***
3535
19bd6c8274c4 defs may now be conditional;
wenzelm
parents: 3511
diff changeset
  1239
4125
wenzelm
parents: 4123
diff changeset
  1240
* removed "axioms" and "generated by" sections;
wenzelm
parents: 4123
diff changeset
  1241
4123
9600dd68d35b *** empty log message ***
oheimb
parents: 4112
diff changeset
  1242
* replaced "ops" section by extended "consts" section, which is capable of
4125
wenzelm
parents: 4123
diff changeset
  1243
  handling the continuous function space "->" directly;
wenzelm
parents: 4123
diff changeset
  1244
wenzelm
parents: 4123
diff changeset
  1245
* domain package:
wenzelm
parents: 4123
diff changeset
  1246
  . proves theorems immediately and stores them in the theory,
wenzelm
parents: 4123
diff changeset
  1247
  . creates hierachical name space,
wenzelm
parents: 4123
diff changeset
  1248
  . now uses normal mixfix annotations (instead of cinfix...),
wenzelm
parents: 4123
diff changeset
  1249
  . minor changes to some names and values (for consistency),
wenzelm
parents: 4123
diff changeset
  1250
  . e.g. cases -> casedist, dists_eq -> dist_eqs, [take_lemma] -> take_lemmas,
wenzelm
parents: 4123
diff changeset
  1251
  . separator between mutual domain defs: changed "," to "and",
wenzelm
parents: 4123
diff changeset
  1252
  . improved handling of sort constraints;  now they have to
wenzelm
parents: 4123
diff changeset
  1253
    appear on the left-hand side of the equations only;
4123
9600dd68d35b *** empty log message ***
oheimb
parents: 4112
diff changeset
  1254
9600dd68d35b *** empty log message ***
oheimb
parents: 4112
diff changeset
  1255
* fixed LAM <x,y,zs>.b syntax;
3567
e2539e1980b4 added simplification meta rules;
wenzelm
parents: 3561
diff changeset
  1256
3744
wenzelm
parents: 3719
diff changeset
  1257
* added extended adm_tac to simplifier in HOLCF -- can now discharge
wenzelm
parents: 3719
diff changeset
  1258
adm (%x. P (t x)), where P is chainfinite and t continuous;
3579
8bd9b4b3b61d *** empty log message ***
wenzelm
parents: 3570
diff changeset
  1259
8bd9b4b3b61d *** empty log message ***
wenzelm
parents: 3570
diff changeset
  1260
3719
6a142dab2a08 Safe_tac; qed_spec_mp in FOL
paulson
parents: 3715
diff changeset
  1261
*** FOL and ZF ***
6a142dab2a08 Safe_tac; qed_spec_mp in FOL
paulson
parents: 3715
diff changeset
  1262
5726
wenzelm
parents: 5722
diff changeset
  1263
* FOL: 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
  1264
  with `addloop' of the simplifier to faciliate case splitting in premises.
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1265
3744
wenzelm
parents: 3719
diff changeset
  1266
* qed_spec_mp, qed_goal_spec_mp, qed_goalw_spec_mp are available, as
wenzelm
parents: 3719
diff changeset
  1267
in HOL, they strip ALL and --> from proved theorems;
wenzelm
parents: 3719
diff changeset
  1268
3719
6a142dab2a08 Safe_tac; qed_spec_mp in FOL
paulson
parents: 3715
diff changeset
  1269
3579
8bd9b4b3b61d *** empty log message ***
wenzelm
parents: 3570
diff changeset
  1270
3006
wenzelm
parents: 3002
diff changeset
  1271
New in Isabelle94-8 (May 1997)
wenzelm
parents: 3002
diff changeset
  1272
------------------------------
2654
6efa602921d1 *** empty log message ***
wenzelm
parents: 2653
diff changeset
  1273
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1274
*** General Changes ***
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1275
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1276
* new utilities to build / run / maintain Isabelle etc. (in parts
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1277
still somewhat experimental); old Makefiles etc. still functional;
2971
c1e1e8406fb2 *** empty log message ***
wenzelm
parents: 2927
diff changeset
  1278
3205
816a1f9fd620 *** empty log message ***
wenzelm
parents: 3116
diff changeset
  1279
* new 'Isabelle System Manual';
816a1f9fd620 *** empty log message ***
wenzelm
parents: 3116
diff changeset
  1280
2825
a94dba60d5f2 *** empty log message ***
wenzelm
parents: 2773
diff changeset
  1281
* INSTALL text, together with ./configure and ./build scripts;
2773
36fdd908a26c *** empty log message ***
wenzelm
parents: 2756
diff changeset
  1282
3006
wenzelm
parents: 3002
diff changeset
  1283
* reimplemented type inference for greater efficiency, better error
wenzelm
parents: 3002
diff changeset
  1284
messages and clean internal interface;
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1285
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1286
* prlim command for dealing with lots of subgoals (an easier way of
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1287
setting goals_limit);
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1288
3006
wenzelm
parents: 3002
diff changeset
  1289
wenzelm
parents: 3002
diff changeset
  1290
*** Syntax ***
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1291
3116
b890bae4273e *** empty log message ***
wenzelm
parents: 3107
diff changeset
  1292
* supports alternative (named) syntax tables (parser and pretty
b890bae4273e *** empty log message ***
wenzelm
parents: 3107
diff changeset
  1293
printer); internal interface is provided by add_modesyntax(_i);
b890bae4273e *** empty log message ***
wenzelm
parents: 3107
diff changeset
  1294
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1295
* Pure, FOL, ZF, HOL, HOLCF now support symbolic input and output; to
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1296
be used in conjunction with the Isabelle symbol font; uses the
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1297
"symbols" syntax table;
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1298
2705
d6e83a02061d *** empty log message ***
wenzelm
parents: 2654
diff changeset
  1299
* added token_translation interface (may translate name tokens in
2756
643cba384a61 *** empty log message ***
wenzelm
parents: 2747
diff changeset
  1300
arbitrary ways, dependent on their type (free, bound, tfree, ...) and
3116
b890bae4273e *** empty log message ***
wenzelm
parents: 3107
diff changeset
  1301
the current print_mode); IMPORTANT: user print translation functions
b890bae4273e *** empty log message ***
wenzelm
parents: 3107
diff changeset
  1302
are responsible for marking newly introduced bounds
b890bae4273e *** empty log message ***
wenzelm
parents: 3107
diff changeset
  1303
(Syntax.mark_boundT);
2705
d6e83a02061d *** empty log message ***
wenzelm
parents: 2654
diff changeset
  1304
2730
865995b744f5 *** empty log message ***
wenzelm
parents: 2726
diff changeset
  1305
* token translations for modes "xterm" and "xterm_color" that display
3006
wenzelm
parents: 3002
diff changeset
  1306
names in bold, underline etc. or colors (which requires a color
wenzelm
parents: 3002
diff changeset
  1307
version of xterm);
2730
865995b744f5 *** empty log message ***
wenzelm
parents: 2726
diff changeset
  1308
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1309
* infixes may now be declared with names independent of their syntax;
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1310
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1311
* added typed_print_translation (like print_translation, but may
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1312
access type of constant);
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1313
3006
wenzelm
parents: 3002
diff changeset
  1314
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1315
*** Classical Reasoner ***
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1316
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1317
Blast_tac: a new tactic!  It is often more powerful than fast_tac, but has
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1318
some limitations.  Blast_tac...
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1319
  + ignores addss, addbefore, addafter; this restriction is intrinsic
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1320
  + ignores elimination rules that don't have the correct format
5726
wenzelm
parents: 5722
diff changeset
  1321
        (the conclusion MUST be a formula variable)
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1322
  + ignores types, which can make HOL proofs fail
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1323
  + rules must not require higher-order unification, e.g. apply_type in ZF
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1324
    [message "Function Var's argument not a bound variable" relates to this]
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1325
  + its proof strategy is more general but can actually be slower
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1326
3107
wenzelm
parents: 3042
diff changeset
  1327
* substitution with equality assumptions no longer permutes other
wenzelm
parents: 3042
diff changeset
  1328
assumptions;
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1329
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1330
* minor changes in semantics of addafter (now called addaltern); renamed
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1331
setwrapper to setWrapper and compwrapper to compWrapper; added safe wrapper
3107
wenzelm
parents: 3042
diff changeset
  1332
(and access functions for it);
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1333
5726
wenzelm
parents: 5722
diff changeset
  1334
* improved combination of classical reasoner and simplifier:
3317
2cfb98c49c42 adapted entry for addss, addSss
oheimb
parents: 3316
diff changeset
  1335
  + functions for handling clasimpsets
2cfb98c49c42 adapted entry for addss, addSss
oheimb
parents: 3316
diff changeset
  1336
  + improvement of addss: now the simplifier is called _after_ the
2cfb98c49c42 adapted entry for addss, addSss
oheimb
parents: 3316
diff changeset
  1337
    safe steps.
2cfb98c49c42 adapted entry for addss, addSss
oheimb
parents: 3316
diff changeset
  1338
  + safe variant of addss called addSss: uses safe simplifications
5726
wenzelm
parents: 5722
diff changeset
  1339
    _during_ the safe steps. It is more complete as it allows multiple
3317
2cfb98c49c42 adapted entry for addss, addSss
oheimb
parents: 3316
diff changeset
  1340
    instantiations of unknowns (e.g. with slow_tac).
3006
wenzelm
parents: 3002
diff changeset
  1341
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1342
*** Simplifier ***
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1343
3006
wenzelm
parents: 3002
diff changeset
  1344
* added interface for simplification procedures (functions that
wenzelm
parents: 3002
diff changeset
  1345
produce *proven* rewrite rules on the fly, depending on current
wenzelm
parents: 3002
diff changeset
  1346
redex);
wenzelm
parents: 3002
diff changeset
  1347
wenzelm
parents: 3002
diff changeset
  1348
* ordering on terms as parameter (used for ordered rewriting);
wenzelm
parents: 3002
diff changeset
  1349
3107
wenzelm
parents: 3042
diff changeset
  1350
* new functions delcongs, deleqcongs, and Delcongs. richer rep_ss;
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1351
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1352
* the solver is now split into a safe and an unsafe part.
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1353
This should be invisible for the normal user, except that the
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1354
functions setsolver and addsolver have been renamed to setSolver and
3107
wenzelm
parents: 3042
diff changeset
  1355
addSolver; added safe_asm_full_simp_tac;
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1356
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1357
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1358
*** HOL ***
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1359
3042
21cd332b65d3 induct_tac
nipkow
parents: 3006
diff changeset
  1360
* a generic induction tactic `induct_tac' which works for all datatypes and
3107
wenzelm
parents: 3042
diff changeset
  1361
also for type `nat';
3042
21cd332b65d3 induct_tac
nipkow
parents: 3006
diff changeset
  1362
3316
nipkow
parents: 3227
diff changeset
  1363
* a generic case distinction tactic `exhaust_tac' which works for all
nipkow
parents: 3227
diff changeset
  1364
datatypes and also for type `nat';
nipkow
parents: 3227
diff changeset
  1365
nipkow
parents: 3227
diff changeset
  1366
* each datatype comes with a function `size';
nipkow
parents: 3227
diff changeset
  1367
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1368
* patterns in case expressions allow tuple patterns as arguments to
3107
wenzelm
parents: 3042
diff changeset
  1369
constructors, for example `case x of [] => ... | (x,y,z)#ps => ...';
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1370
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1371
* primrec now also works with type nat;
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1372
3338
b99d750f6a37 Added recdef
paulson
parents: 3321
diff changeset
  1373
* recdef: a new declaration form, allows general recursive functions to be
b99d750f6a37 Added recdef
paulson
parents: 3321
diff changeset
  1374
defined in theory files.  See HOL/ex/Fib, HOL/ex/Primes, HOL/Subst/Unify.
b99d750f6a37 Added recdef
paulson
parents: 3321
diff changeset
  1375
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1376
* the constant for negation has been renamed from "not" to "Not" to
3107
wenzelm
parents: 3042
diff changeset
  1377
harmonize with FOL, ZF, LK, etc.;
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1378
3107
wenzelm
parents: 3042
diff changeset
  1379
* HOL/ex/LFilter theory of a corecursive "filter" functional for
wenzelm
parents: 3042
diff changeset
  1380
infinite lists;
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1381
3227
9190438471ea *** empty log message ***
wenzelm
parents: 3205
diff changeset
  1382
* HOL/Modelcheck demonstrates invocation of model checker oracle;
9190438471ea *** empty log message ***
wenzelm
parents: 3205
diff changeset
  1383
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1384
* HOL/ex/Ring.thy declares cring_simp, which solves equational
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1385
problems in commutative rings, using axiomatic type classes for + and *;
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1386
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1387
* more examples in HOL/MiniML and HOL/Auth;
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1388
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1389
* more default rewrite rules for quantifiers, union/intersection;
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1390
3321
c609a0119fd8 arbitrary
nipkow
parents: 3317
diff changeset
  1391
* a new constant `arbitrary == @x.False';
c609a0119fd8 arbitrary
nipkow
parents: 3317
diff changeset
  1392
3107
wenzelm
parents: 3042
diff changeset
  1393
* HOLCF/IOA replaces old HOL/IOA;
wenzelm
parents: 3042
diff changeset
  1394
5726
wenzelm
parents: 5722
diff changeset
  1395
* HOLCF changes: derived all rules and arities
wenzelm
parents: 5722
diff changeset
  1396
  + axiomatic type classes instead of classes
2653
f1a6997cdc06 described changes for HOLCF-Version without rules and arities
slotosch
parents: 2649
diff changeset
  1397
  + typedef instead of faking type definitions
2747
9fdc1461085f Tidied and updated
paulson
parents: 2732
diff changeset
  1398
  + eliminated the internal constants less_fun, less_cfun, UU_fun, UU_cfun etc.
2730
865995b744f5 *** empty log message ***
wenzelm
parents: 2726
diff changeset
  1399
  + new axclasses cpo, chfin, flat with flat < chfin < pcpo < cpo < po
2653
f1a6997cdc06 described changes for HOLCF-Version without rules and arities
slotosch
parents: 2649
diff changeset
  1400
  + eliminated the types void, one, tr
f1a6997cdc06 described changes for HOLCF-Version without rules and arities
slotosch
parents: 2649
diff changeset
  1401
  + use unit lift and bool lift (with translations) instead of one and tr
f1a6997cdc06 described changes for HOLCF-Version without rules and arities
slotosch
parents: 2649
diff changeset
  1402
  + eliminated blift from Lift3.thy (use Def instead of blift)
3107
wenzelm
parents: 3042
diff changeset
  1403
  all eliminated rules are derived as theorems --> no visible changes ;
2649
2edc5b01e5a7 improved description of recent changes
oheimb
parents: 2639
diff changeset
  1404
3006
wenzelm
parents: 3002
diff changeset
  1405
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1406
*** ZF ***
2553
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
  1407
2865
77daca16b2f4 ZF.thy is again usable
paulson
parents: 2825
diff changeset
  1408
* ZF now has Fast_tac, Simp_tac and Auto_tac.  Union_iff is a now a default
77daca16b2f4 ZF.thy is again usable
paulson
parents: 2825
diff changeset
  1409
rewrite rule; this may affect some proofs.  eq_cs is gone but can be put back
77daca16b2f4 ZF.thy is again usable
paulson
parents: 2825
diff changeset
  1410
as ZF_cs addSIs [equalityI];
2553
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
  1411
2554
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1412
2732
84fc9c3b6bf0 *** empty log message ***
wenzelm
parents: 2731
diff changeset
  1413
2553
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
  1414
New in Isabelle94-7 (November 96)
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
  1415
---------------------------------
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
  1416
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
  1417
* allowing negative levels (as offsets) in prlev and choplev;
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
  1418
2554
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1419
* super-linear speedup for large simplifications;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1420
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1421
* FOL, ZF and HOL now use miniscoping: rewriting pushes
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1422
quantifications in as far as possible (COULD MAKE EXISTING PROOFS
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1423
FAIL); can suppress it using the command Delsimps (ex_simps @
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1424
all_simps); De Morgan laws are also now included, by default;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1425
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1426
* improved printing of ==>  :  ~: