NEWS
author nipkow
Wed, 30 Aug 2000 13:22:10 +0200
changeset 9737 7aae235675dc
parent 9724 2030c5d63741
child 9741 0502f06c2d29
permissions -rw-r--r--
*** empty log message ***
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
8729
094dbd0fad0c * improved name spaces: ambiguous output is qualified; support for
wenzelm
parents: 8705
diff changeset
     1
5363
0cf15843b82f isatool install;
wenzelm
parents: 5332
diff changeset
     2
Isabelle NEWS -- history user-relevant changes
0cf15843b82f isatool install;
wenzelm
parents: 5332
diff changeset
     3
==============================================
2553
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
     4
8015
wenzelm
parents: 8014
diff changeset
     5
New in this Isabelle version
wenzelm
parents: 8014
diff changeset
     6
----------------------------
wenzelm
parents: 8014
diff changeset
     7
8014
fdf1281a3d0c HOL changes
paulson
parents: 8007
diff changeset
     8
*** Overview of INCOMPATIBILITIES (see below for more details) ***
fdf1281a3d0c HOL changes
paulson
parents: 8007
diff changeset
     9
8848
wenzelm
parents: 8832
diff changeset
    10
* HOL: simplification of natural numbers is much changed; to partly
wenzelm
parents: 8832
diff changeset
    11
recover the old behaviour (e.g. to prevent n+n rewriting to #2*n)
wenzelm
parents: 8832
diff changeset
    12
issue the following ML commands:
wenzelm
parents: 8832
diff changeset
    13
wenzelm
parents: 8832
diff changeset
    14
  Delsimprocs Nat_Numeral_Simprocs.cancel_numerals;
wenzelm
parents: 8832
diff changeset
    15
  Delsimprocs [Nat_Numeral_Simprocs.combine_numerals];
8788
518a5450ab6d simprocs
paulson
parents: 8736
diff changeset
    16
8967
00f18476ac15 overloading of 0
paulson
parents: 8925
diff changeset
    17
* HOL: 0 is now overloaded, so the type constraint ::nat may sometimes be
00f18476ac15 overloading of 0
paulson
parents: 8925
diff changeset
    18
needed;
00f18476ac15 overloading of 0
paulson
parents: 8925
diff changeset
    19
8729
094dbd0fad0c * improved name spaces: ambiguous output is qualified; support for
wenzelm
parents: 8705
diff changeset
    20
* HOL: the constant for f``x is now "image" rather than "op ``";
8014
fdf1281a3d0c HOL changes
paulson
parents: 8007
diff changeset
    21
9330
6861e3b00155 HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents: 9288
diff changeset
    22
* HOL: the disjoint sum is now "<+>" instead of "Plus"; the cartesian
6861e3b00155 HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents: 9288
diff changeset
    23
product is now "<*>" instead of "Times"; the lexicographic product is
6861e3b00155 HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents: 9288
diff changeset
    24
now "<*lex*>" instead of "**";
8705
a3da5538d924 *** empty log message ***
nipkow
parents: 8673
diff changeset
    25
8518
wenzelm
parents: 8487
diff changeset
    26
* HOL: exhaust_tac on datatypes superceded by new generic case_tac;
8440
d66f0f14b1ca * HOL: exhaust_tac on datatypes superceded by new case_tac;
wenzelm
parents: 8425
diff changeset
    27
9489
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
    28
* HOL: simplification no longer dives into case-expressions;
8603
805910de7be0 *** empty log message ***
nipkow
parents: 8570
diff changeset
    29
8655
16906e600c9a recdef: admit name and atts;
wenzelm
parents: 8626
diff changeset
    30
* HOL: the recursion equations generated by 'recdef' are now called
16906e600c9a recdef: admit name and atts;
wenzelm
parents: 8626
diff changeset
    31
f.simps instead of f.rules;
8626
nipkow
parents: 8621
diff changeset
    32
9489
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
    33
* HOL: theory Sexp now in HOL/Induct examples (it used to be part of
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
    34
main HOL, but was unused); should better use HOL's datatype package
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
    35
anyway;
8848
wenzelm
parents: 8832
diff changeset
    36
9489
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
    37
* HOL: removed obsolete theorem binding expand_if (refer to split_if
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
    38
instead);
9383
c21fa1c48de0 * HOL: removed obsolete expand_if = split_if; theorems if_splits =
wenzelm
parents: 9349
diff changeset
    39
8848
wenzelm
parents: 8832
diff changeset
    40
* HOL/Real: "rabs" replaced by overloaded "abs" function;
wenzelm
parents: 8832
diff changeset
    41
8887
c0c583ce0b0b * HOL/ML: even fewer consts are declared as global (see theories Ord,
wenzelm
parents: 8848
diff changeset
    42
* HOL/ML: even fewer consts are declared as global (see theories Ord,
c0c583ce0b0b * HOL/ML: even fewer consts are declared as global (see theories Ord,
wenzelm
parents: 8848
diff changeset
    43
Lfp, Gfp, WF); this only affects ML packages that refer to const names
c0c583ce0b0b * HOL/ML: even fewer consts are declared as global (see theories Ord,
wenzelm
parents: 8848
diff changeset
    44
internally;
c0c583ce0b0b * HOL/ML: even fewer consts are declared as global (see theories Ord,
wenzelm
parents: 8848
diff changeset
    45
9388
0b039a3575eb // change; also moved entry for AddIffs
paulson
parents: 9383
diff changeset
    46
* HOL, ZF: syntax for quotienting wrt an equivalence relation changed from
0b039a3575eb // change; also moved entry for AddIffs
paulson
parents: 9383
diff changeset
    47
  A/r to A//r;
8921
7c04c98132c4 * Pure: changed syntax of local blocks from {{ }} to { };
wenzelm
parents: 8887
diff changeset
    48
9542
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
    49
* ZF: new treatment of arithmetic (nat & int) may break some old proofs;
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
    50
9437
93e91040c286 * Isar/Provers: intro/elim/dest attributes: changed
wenzelm
parents: 9402
diff changeset
    51
* Isar/Provers: intro/elim/dest attributes: changed
93e91040c286 * Isar/Provers: intro/elim/dest attributes: changed
wenzelm
parents: 9402
diff changeset
    52
intro/intro!/intro!!  flags to intro!/intro/intro? (in most cases, one
93e91040c286 * Isar/Provers: intro/elim/dest attributes: changed
wenzelm
parents: 9402
diff changeset
    53
should have to change intro!! to intro? only);
93e91040c286 * Isar/Provers: intro/elim/dest attributes: changed
wenzelm
parents: 9402
diff changeset
    54
9489
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
    55
* Isar: changed syntax of local blocks from {{ }} to { };
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
    56
9612
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
    57
* Isar: renamed 'RS' attribute to 'THEN';
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
    58
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
    59
* Isar/HOL: renamed "intrs" to "intros" in inductive definitions;
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
    60
9437
93e91040c286 * Isar/Provers: intro/elim/dest attributes: changed
wenzelm
parents: 9402
diff changeset
    61
* Provers: strengthened force_tac by using new first_best_tac;
9402
480a1b40fdd6 strengthened force_tac by using new first_best_tac
oheimb
parents: 9388
diff changeset
    62
9185
30d46270a427 weak elimination rules
paulson
parents: 9085
diff changeset
    63
* Provers: Blast_tac now warns of and ignores "weak elimination rules" e.g.
30d46270a427 weak elimination rules
paulson
parents: 9085
diff changeset
    64
  [| inj ?f;          ?f ?x = ?f ?y; ?x = ?y ==> ?W |] ==> ?W
30d46270a427 weak elimination rules
paulson
parents: 9085
diff changeset
    65
use instead the strong form,
30d46270a427 weak elimination rules
paulson
parents: 9085
diff changeset
    66
  [| inj ?f; ~ ?W ==> ?f ?x = ?f ?y; ?x = ?y ==> ?W |] ==> ?W
9330
6861e3b00155 HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents: 9288
diff changeset
    67
In HOL, FOL and ZF the function cla_make_elim will create such rules
9335
5d9f02e75569 AddIffs
paulson
parents: 9330
diff changeset
    68
from destruct-rules;
9185
30d46270a427 weak elimination rules
paulson
parents: 9085
diff changeset
    69
9402
480a1b40fdd6 strengthened force_tac by using new first_best_tac
oheimb
parents: 9388
diff changeset
    70
* Provers: safe_asm_full_simp_tac is no longer in the simplifier signature. Use
480a1b40fdd6 strengthened force_tac by using new first_best_tac
oheimb
parents: 9388
diff changeset
    71
  val safe_asm_full_simp_tac = generic_simp_tac true (true,true,true);
480a1b40fdd6 strengthened force_tac by using new first_best_tac
oheimb
parents: 9388
diff changeset
    72
  if required.
480a1b40fdd6 strengthened force_tac by using new first_best_tac
oheimb
parents: 9388
diff changeset
    73
8994
803533fbb3ec * ML: renamed flags Syntax.trace_norm_ast to Syntax.trace_ast; global
wenzelm
parents: 8991
diff changeset
    74
* 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
    75
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
    76
8518
wenzelm
parents: 8487
diff changeset
    77
* ML: PureThy.add_thms/add_axioms/add_defs return theorems as well;
8440
d66f0f14b1ca * HOL: exhaust_tac on datatypes superceded by new case_tac;
wenzelm
parents: 8425
diff changeset
    78
9330
6861e3b00155 HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents: 9288
diff changeset
    79
* 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
    80
overloading (usually false);
6861e3b00155 HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents: 9288
diff changeset
    81
6861e3b00155 HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents: 9288
diff changeset
    82
* LaTeX: several changes of isabelle.sty;
8729
094dbd0fad0c * improved name spaces: ambiguous output is qualified; support for
wenzelm
parents: 8705
diff changeset
    83
8014
fdf1281a3d0c HOL changes
paulson
parents: 8007
diff changeset
    84
8487
5f3b0e02ec15 Isar: splitter support; improved diagnostics;
wenzelm
parents: 8440
diff changeset
    85
*** Document preparation ***
8358
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents: 8283
diff changeset
    86
9198
0ab3c81e9425 * formal comments (text blocks etc.) in new-style theories may now
wenzelm
parents: 9185
diff changeset
    87
* formal comments (text blocks etc.) in new-style theories may now
0ab3c81e9425 * formal comments (text blocks etc.) in new-style theories may now
wenzelm
parents: 9185
diff changeset
    88
contain antiquotations of thm/prop/term/typ to be presented according
0ab3c81e9425 * formal comments (text blocks etc.) in new-style theories may now
wenzelm
parents: 9185
diff changeset
    89
to latex print mode; concrete syntax is like this: @{term[show_types]
0ab3c81e9425 * formal comments (text blocks etc.) in new-style theories may now
wenzelm
parents: 9185
diff changeset
    90
"f(x) = a + x"};
0ab3c81e9425 * formal comments (text blocks etc.) in new-style theories may now
wenzelm
parents: 9185
diff changeset
    91
8358
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents: 8283
diff changeset
    92
* isatool mkdir provides easy setup of Isabelle session directories,
8518
wenzelm
parents: 8487
diff changeset
    93
including proper document sources;
8358
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents: 8283
diff changeset
    94
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents: 8283
diff changeset
    95
* generated LaTeX sources are now deleted after successful run
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents: 8283
diff changeset
    96
(isatool document -c); may retain a copy somewhere else via -D option
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents: 8283
diff changeset
    97
of isatool usedir;
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents: 8283
diff changeset
    98
8566
30261b1917b5 usedir -D: update styles;
wenzelm
parents: 8534
diff changeset
    99
* isatool usedir -D now lets isatool latex -o sty update the Isabelle
30261b1917b5 usedir -D: update styles;
wenzelm
parents: 8534
diff changeset
   100
style files, achieving self-contained LaTeX sources;
30261b1917b5 usedir -D: update styles;
wenzelm
parents: 8534
diff changeset
   101
8518
wenzelm
parents: 8487
diff changeset
   102
* old-style theories now produce (crude) LaTeX output as well;
8358
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents: 8283
diff changeset
   103
9057
af1ca1acf292 * browser info session directories are now self-contained (may be put
wenzelm
parents: 9052
diff changeset
   104
* browser info session directories are now self-contained (may be put
9437
93e91040c286 * Isar/Provers: intro/elim/dest attributes: changed
wenzelm
parents: 9402
diff changeset
   105
on WWW server seperately); improved graphs of nested sessions; removed
93e91040c286 * Isar/Provers: intro/elim/dest attributes: changed
wenzelm
parents: 9402
diff changeset
   106
graph for 'all sessions';
9057
af1ca1acf292 * browser info session directories are now self-contained (may be put
wenzelm
parents: 9052
diff changeset
   107
9701
533df6cedc2d * \isabellestyle{it} produces near math mode output;
wenzelm
parents: 9647
diff changeset
   108
* several improvements in isabelle.sty; \isabellestyle{it} produces
533df6cedc2d * \isabellestyle{it} produces near math mode output;
wenzelm
parents: 9647
diff changeset
   109
near math mode output; \isamarkupheader is now \section by default;
9489
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
   110
8358
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents: 8283
diff changeset
   111
8184
6b7ef9fc39da nat as names;
wenzelm
parents: 8015
diff changeset
   112
*** Isar ***
6b7ef9fc39da nat as names;
wenzelm
parents: 8015
diff changeset
   113
8621
8ba0f90f6f35 * Isar/Pure: local results and corresponding term bindings are now
wenzelm
parents: 8603
diff changeset
   114
* Pure: local results and corresponding term bindings are now subject
8ba0f90f6f35 * Isar/Pure: local results and corresponding term bindings are now
wenzelm
parents: 8603
diff changeset
   115
to Hindley-Milner polymorphism (similar to ML); this accommodates
8ba0f90f6f35 * Isar/Pure: local results and corresponding term bindings are now
wenzelm
parents: 8603
diff changeset
   116
incremental type-inference nicely;
8283
0a319c5746eb * Pure now provides its own version of intro/elim/dest attributes;
wenzelm
parents: 8271
diff changeset
   117
9489
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
   118
* Pure: new derived language element 'obtain' supports generalized
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
   119
existence reasoning;
8621
8ba0f90f6f35 * Isar/Pure: local results and corresponding term bindings are now
wenzelm
parents: 8603
diff changeset
   120
8ba0f90f6f35 * Isar/Pure: local results and corresponding term bindings are now
wenzelm
parents: 8603
diff changeset
   121
* Pure: new calculational elements 'moreover' and 'ultimately' support
9489
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
   122
accumulation of results, without applying any rules yet;
8184
6b7ef9fc39da nat as names;
wenzelm
parents: 8015
diff changeset
   123
8487
5f3b0e02ec15 Isar: splitter support; improved diagnostics;
wenzelm
parents: 8440
diff changeset
   124
* Pure: scalable support for case-analysis type proofs: new 'case'
8440
d66f0f14b1ca * HOL: exhaust_tac on datatypes superceded by new case_tac;
wenzelm
parents: 8425
diff changeset
   125
language element refers to local contexts symbolically, as produced by
d66f0f14b1ca * HOL: exhaust_tac on datatypes superceded by new case_tac;
wenzelm
parents: 8425
diff changeset
   126
certain proof methods; internally, case names are attached to theorems
d66f0f14b1ca * HOL: exhaust_tac on datatypes superceded by new case_tac;
wenzelm
parents: 8425
diff changeset
   127
as "tags";
d66f0f14b1ca * HOL: exhaust_tac on datatypes superceded by new case_tac;
wenzelm
parents: 8425
diff changeset
   128
9330
6861e3b00155 HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents: 9288
diff changeset
   129
* Pure: theory command 'hide' removes declarations from
6861e3b00155 HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents: 9288
diff changeset
   130
class/type/const name spaces;
6861e3b00155 HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents: 9288
diff changeset
   131
6861e3b00155 HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents: 9288
diff changeset
   132
* Pure: theory command 'defs' supports option "(overloaded)" to
6861e3b00155 HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents: 9288
diff changeset
   133
indicate potential overloading;
6861e3b00155 HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents: 9288
diff changeset
   134
8921
7c04c98132c4 * Pure: changed syntax of local blocks from {{ }} to { };
wenzelm
parents: 8887
diff changeset
   135
* Pure: changed syntax of local blocks from {{ }} to { };
7c04c98132c4 * Pure: changed syntax of local blocks from {{ }} to { };
wenzelm
parents: 8887
diff changeset
   136
9612
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   137
* Pure: renamed 'RS' attribute to 'THEN';
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   138
9489
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
   139
* Pure: syntax of sorts made 'inner', i.e. have to write "{a, b, c}"
8921
7c04c98132c4 * Pure: changed syntax of local blocks from {{ }} to { };
wenzelm
parents: 8887
diff changeset
   140
instead of {a, b, c};
7c04c98132c4 * Pure: changed syntax of local blocks from {{ }} to { };
wenzelm
parents: 8887
diff changeset
   141
8621
8ba0f90f6f35 * Isar/Pure: local results and corresponding term bindings are now
wenzelm
parents: 8603
diff changeset
   142
* Pure now provides its own version of intro/elim/dest attributes;
8ba0f90f6f35 * Isar/Pure: local results and corresponding term bindings are now
wenzelm
parents: 8603
diff changeset
   143
useful for building new logics, but beware of confusion with the
9612
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   144
version in Provers/classical;
8621
8ba0f90f6f35 * Isar/Pure: local results and corresponding term bindings are now
wenzelm
parents: 8603
diff changeset
   145
8991
dc70b797827f case 'antecedent';
wenzelm
parents: 8967
diff changeset
   146
* Pure: the local context of (non-atomic) goals is provided via case
dc70b797827f case 'antecedent';
wenzelm
parents: 8967
diff changeset
   147
name 'antecedent';
dc70b797827f case 'antecedent';
wenzelm
parents: 8967
diff changeset
   148
9011
0cfc347f8d19 Isar/Pure: removed obsolete 'transfer' attribute (transfer of thms to
wenzelm
parents: 8994
diff changeset
   149
* Pure: removed obsolete 'transfer' attribute (transfer of thms to the
0cfc347f8d19 Isar/Pure: removed obsolete 'transfer' attribute (transfer of thms to
wenzelm
parents: 8994
diff changeset
   150
current context is now done automatically);
0cfc347f8d19 Isar/Pure: removed obsolete 'transfer' attribute (transfer of thms to
wenzelm
parents: 8994
diff changeset
   151
9198
0ab3c81e9425 * formal comments (text blocks etc.) in new-style theories may now
wenzelm
parents: 9185
diff changeset
   152
* Pure: theory command 'method_setup' provides a simple interface for
0ab3c81e9425 * formal comments (text blocks etc.) in new-style theories may now
wenzelm
parents: 9185
diff changeset
   153
definining proof methods in ML;
0ab3c81e9425 * formal comments (text blocks etc.) in new-style theories may now
wenzelm
parents: 9185
diff changeset
   154
9709
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   155
* Provers: 'simp' method now supports 'cong' modifiers;
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   156
9612
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   157
* Provers: hypsubst support; also plain subst and symmetric attribute
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   158
(the latter supercedes [RS sym]);
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   159
8487
5f3b0e02ec15 Isar: splitter support; improved diagnostics;
wenzelm
parents: 8440
diff changeset
   160
* Provers: splitter support (via 'split' attribute and 'simp' method
5f3b0e02ec15 Isar: splitter support; improved diagnostics;
wenzelm
parents: 8440
diff changeset
   161
modifier); 'simp' method: 'only:' modifier removes loopers as well
5f3b0e02ec15 Isar: splitter support; improved diagnostics;
wenzelm
parents: 8440
diff changeset
   162
(including splits);
5f3b0e02ec15 Isar: splitter support; improved diagnostics;
wenzelm
parents: 8440
diff changeset
   163
9612
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   164
* Provers: added 'fastsimp' and 'clarsimp' methods (combination of
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   165
Simplifier and Classical reasoner);
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   166
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   167
* Provers: added 'arith_split' attribute;
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   168
8440
d66f0f14b1ca * HOL: exhaust_tac on datatypes superceded by new case_tac;
wenzelm
parents: 8425
diff changeset
   169
* HOL: new proof method 'cases' and improved version of 'induct' now
d66f0f14b1ca * HOL: exhaust_tac on datatypes superceded by new case_tac;
wenzelm
parents: 8425
diff changeset
   170
support named cases; major packages (inductive, datatype, primrec,
d66f0f14b1ca * HOL: exhaust_tac on datatypes superceded by new case_tac;
wenzelm
parents: 8425
diff changeset
   171
recdef) support case names and properly name parameters;
d66f0f14b1ca * HOL: exhaust_tac on datatypes superceded by new case_tac;
wenzelm
parents: 8425
diff changeset
   172
d66f0f14b1ca * HOL: exhaust_tac on datatypes superceded by new case_tac;
wenzelm
parents: 8425
diff changeset
   173
* HOL: removed 'case_split' thm binding, should use 'cases' proof
8283
0a319c5746eb * Pure now provides its own version of intro/elim/dest attributes;
wenzelm
parents: 8271
diff changeset
   174
method anyway;
0a319c5746eb * Pure now provides its own version of intro/elim/dest attributes;
wenzelm
parents: 8271
diff changeset
   175
9383
c21fa1c48de0 * HOL: removed obsolete expand_if = split_if; theorems if_splits =
wenzelm
parents: 9349
diff changeset
   176
* HOL: removed obsolete expand_if = split_if; theorems if_splits =
c21fa1c48de0 * HOL: removed obsolete expand_if = split_if; theorems if_splits =
wenzelm
parents: 9349
diff changeset
   177
split_if split_if_asm; datatype package provides theorems foo.splits =
c21fa1c48de0 * HOL: removed obsolete expand_if = split_if; theorems if_splits =
wenzelm
parents: 9349
diff changeset
   178
foo.split foo.split_asm for each datatype;
c21fa1c48de0 * HOL: removed obsolete expand_if = split_if; theorems if_splits =
wenzelm
parents: 9349
diff changeset
   179
9612
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   180
* HOL/Calculation: new rules for substitution in inequalities
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   181
(monotonicity conditions are extracted to be proven at end);
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   182
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   183
* HOL/inductive: rename "intrs" to "intros" (potential
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   184
INCOMPATIBILITY); emulation of mk_cases feature for proof scripts:
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   185
'inductive_cases' command and 'ind_cases' method; NOTE: use (cases
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   186
(simplified)) method in proper proofs;
8283
0a319c5746eb * Pure now provides its own version of intro/elim/dest attributes;
wenzelm
parents: 8271
diff changeset
   187
9437
93e91040c286 * Isar/Provers: intro/elim/dest attributes: changed
wenzelm
parents: 9402
diff changeset
   188
* Provers: intro/elim/dest attributes: changed intro/intro!/intro!!
93e91040c286 * Isar/Provers: intro/elim/dest attributes: changed
wenzelm
parents: 9402
diff changeset
   189
flags to intro!/intro/intro? (in most cases, one should have to change
93e91040c286 * Isar/Provers: intro/elim/dest attributes: changed
wenzelm
parents: 9402
diff changeset
   190
intro!! to intro? only);
8283
0a319c5746eb * Pure now provides its own version of intro/elim/dest attributes;
wenzelm
parents: 8271
diff changeset
   191
9612
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   192
* names of theorems etc. may be natural numbers as well;
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   193
9724
2030c5d63741 * 'pr' command: optional argument for ProofContext.prems_limit;
wenzelm
parents: 9709
diff changeset
   194
* 'pr' command: optional arguments for goals_limit and
2030c5d63741 * 'pr' command: optional argument for ProofContext.prems_limit;
wenzelm
parents: 9709
diff changeset
   195
ProofContext.prems_limit; no longer prints theory contexts, but only
2030c5d63741 * 'pr' command: optional argument for ProofContext.prems_limit;
wenzelm
parents: 9709
diff changeset
   196
proof states;
8487
5f3b0e02ec15 Isar: splitter support; improved diagnostics;
wenzelm
parents: 8440
diff changeset
   197
5f3b0e02ec15 Isar: splitter support; improved diagnostics;
wenzelm
parents: 8440
diff changeset
   198
* diagnostic commands 'pr', 'thm', 'prop', 'term', 'typ' admit
8518
wenzelm
parents: 8487
diff changeset
   199
additional print modes to be specified; e.g. "pr(latex)" will print
wenzelm
parents: 8487
diff changeset
   200
proof state according to the Isabelle LaTeX style;
8487
5f3b0e02ec15 Isar: splitter support; improved diagnostics;
wenzelm
parents: 8440
diff changeset
   201
8534
fdbabfbc3829 improved support for emulating tactic scripts;
wenzelm
parents: 8518
diff changeset
   202
* improved support for emulating tactic scripts, including proof
9612
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   203
methods 'rule_tac' etc., 'cut_tac', 'thin_tac', 'subgoal_tac',
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   204
'rename_tac', 'rotate_tac', 'tactic', and 'case_tac' / 'induct_tac'
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   205
(for HOL datatypes);
8534
fdbabfbc3829 improved support for emulating tactic scripts;
wenzelm
parents: 8518
diff changeset
   206
8673
987ea1a559d0 Isar: simplified (more robust) goal selection of proof methods;
wenzelm
parents: 8655
diff changeset
   207
* simplified (more robust) goal selection of proof methods: 1st goal,
987ea1a559d0 Isar: simplified (more robust) goal selection of proof methods;
wenzelm
parents: 8655
diff changeset
   208
all goals, or explicit goal specifier (tactic emulation); thus 'proof
987ea1a559d0 Isar: simplified (more robust) goal selection of proof methods;
wenzelm
parents: 8655
diff changeset
   209
method scripts' have to be in depth-first order;
987ea1a559d0 Isar: simplified (more robust) goal selection of proof methods;
wenzelm
parents: 8655
diff changeset
   210
9198
0ab3c81e9425 * formal comments (text blocks etc.) in new-style theories may now
wenzelm
parents: 9185
diff changeset
   211
* tuned 'let' syntax: replaced 'as' keyword by 'and';
8729
094dbd0fad0c * improved name spaces: ambiguous output is qualified; support for
wenzelm
parents: 8705
diff changeset
   212
9224
0da360494917 * Isar: removed 'help' command, which hasn't been too helpful anyway;
wenzelm
parents: 9198
diff changeset
   213
* removed 'help' command, which hasn't been too helpful anyway; should
0da360494917 * Isar: removed 'help' command, which hasn't been too helpful anyway;
wenzelm
parents: 9198
diff changeset
   214
instead use individual commands for printing items (print_commands,
0da360494917 * Isar: removed 'help' command, which hasn't been too helpful anyway;
wenzelm
parents: 9198
diff changeset
   215
print_methods etc.);
0da360494917 * Isar: removed 'help' command, which hasn't been too helpful anyway;
wenzelm
parents: 9198
diff changeset
   216
9239
b31c2132176a * added 'nothing' --- the empty list of theorems;
wenzelm
parents: 9229
diff changeset
   217
* added 'nothing' --- the empty list of theorems;
b31c2132176a * added 'nothing' --- the empty list of theorems;
wenzelm
parents: 9229
diff changeset
   218
8184
6b7ef9fc39da nat as names;
wenzelm
parents: 8015
diff changeset
   219
8014
fdf1281a3d0c HOL changes
paulson
parents: 8007
diff changeset
   220
*** HOL ***
fdf1281a3d0c HOL changes
paulson
parents: 8007
diff changeset
   221
8518
wenzelm
parents: 8487
diff changeset
   222
* HOL/Algebra: new theory of rings and univariate polynomials, by
wenzelm
parents: 8487
diff changeset
   223
Clemens Ballarin;
8014
fdf1281a3d0c HOL changes
paulson
parents: 8007
diff changeset
   224
8392
5bf82327aa36 Factorization
paulson
parents: 8358
diff changeset
   225
* HOL/ex: new theory Factorization proving the Fundamental Theorem of
5bf82327aa36 Factorization
paulson
parents: 8358
diff changeset
   226
Arithmetic, by Thomas M Rasmussen;
8007
c29e27ee4933 header;
wenzelm
parents: 7986
diff changeset
   227
8570
63d4f3ea2e70 HOL/ex/Multiquote;
wenzelm
parents: 8566
diff changeset
   228
* HOL/ex/Multiquote: multiple nested quotations and anti-quotations --
63d4f3ea2e70 HOL/ex/Multiquote;
wenzelm
parents: 8566
diff changeset
   229
basically a generalized version of de-Bruijn representation; very
9489
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
   230
useful in avoiding lifting of operations;
8570
63d4f3ea2e70 HOL/ex/Multiquote;
wenzelm
parents: 8566
diff changeset
   231
9542
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   232
* HOL/NumberTheory: Chinese Remainder Theorem, Fermat/Euler Theorem, Wilson's
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   233
Theorem, by Thomas M Rasmussen;
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   234
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   235
* HOL/Prolog: a (bare-bones) implementation of Lambda-Prolog;
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   236
8848
wenzelm
parents: 8832
diff changeset
   237
* HOL/Real: "rabs" replaced by overloaded "abs" function;
wenzelm
parents: 8832
diff changeset
   238
9612
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   239
* HOL/record: added general record equality rule to simpset; fixed
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   240
select-update simplification procedure to handle extended records as
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   241
well; admit "r" as field name;
9542
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   242
8967
00f18476ac15 overloading of 0
paulson
parents: 8925
diff changeset
   243
* HOL: 0 is now overloaded over the new sort "zero", allowing its use with
00f18476ac15 overloading of 0
paulson
parents: 8925
diff changeset
   244
other numeric types and also as the identity of groups, rings, etc.;
00f18476ac15 overloading of 0
paulson
parents: 8925
diff changeset
   245
00f18476ac15 overloading of 0
paulson
parents: 8925
diff changeset
   246
* HOL: new axclass plus_ac0 for addition with the AC-laws and 0 as identity.
00f18476ac15 overloading of 0
paulson
parents: 8925
diff changeset
   247
Types nat and int belong to this axclass;
00f18476ac15 overloading of 0
paulson
parents: 8925
diff changeset
   248
9085
5ce73f3cadff real simprocs
paulson
parents: 9057
diff changeset
   249
* greatly improved simplification involving numerals of type nat, int, real:
8788
518a5450ab6d simprocs
paulson
parents: 8736
diff changeset
   250
   (i + #8 + j) = Suc k simplifies to  #7 + (i + j) = k
8832
bcceda950cd0 more details
paulson
parents: 8788
diff changeset
   251
   i*j + k + j*#3*i     simplifies to  #4*(i*j) + k
bcceda950cd0 more details
paulson
parents: 8788
diff changeset
   252
  two terms #m*u and #n*u are replaced by #(m+n)*u
bcceda950cd0 more details
paulson
parents: 8788
diff changeset
   253
    (where #m, #n and u can implicitly be 1; this is simproc combine_numerals)
bcceda950cd0 more details
paulson
parents: 8788
diff changeset
   254
  and the term/formula #m*u+x ~~ #n*u+y simplifies simplifies to #(m-n)+x ~~ y
bcceda950cd0 more details
paulson
parents: 8788
diff changeset
   255
    or x ~~ #(n-m)+y, where ~~ is one of = < <= or - (simproc cancel_numerals);
8736
0bfd6678a5fa new simprocs for numerals of type "nat"
paulson
parents: 8729
diff changeset
   256
8848
wenzelm
parents: 8832
diff changeset
   257
* HOL: new version of "case_tac" subsumes both boolean case split and
8440
d66f0f14b1ca * HOL: exhaust_tac on datatypes superceded by new case_tac;
wenzelm
parents: 8425
diff changeset
   258
"exhaust_tac" on datatypes; INCOMPATIBILITY: exhaust_tac no longer
8518
wenzelm
parents: 8487
diff changeset
   259
exists, may define val exhaust_tac = case_tac for ad-hoc portability;
8440
d66f0f14b1ca * HOL: exhaust_tac on datatypes superceded by new case_tac;
wenzelm
parents: 8425
diff changeset
   260
8848
wenzelm
parents: 8832
diff changeset
   261
* HOL: simplification no longer dives into case-expressions: only the
wenzelm
parents: 8832
diff changeset
   262
selector expression is simplified, but not the remaining arms. To
wenzelm
parents: 8832
diff changeset
   263
enable full simplification of case-expressions for datatype t, you
wenzelm
parents: 8832
diff changeset
   264
need to remove t.weak_case_cong from the simpset, either permanently
8603
805910de7be0 *** empty log message ***
nipkow
parents: 8570
diff changeset
   265
(Delcongs[thm"t.weak_case_cong"];) or locally (delcongs [...]).
805910de7be0 *** empty log message ***
nipkow
parents: 8570
diff changeset
   266
8848
wenzelm
parents: 8832
diff changeset
   267
* HOL/recdef: the recursion equations generated by 'recdef' for
wenzelm
parents: 8832
diff changeset
   268
function 'f' are now called f.simps instead of f.rules; if all
wenzelm
parents: 8832
diff changeset
   269
termination conditions are proved automatically, these simplification
wenzelm
parents: 8832
diff changeset
   270
rules are added to the simpset, as in primrec; rules may be named
wenzelm
parents: 8832
diff changeset
   271
individually as well, resulting in a separate list of theorems for
wenzelm
parents: 8832
diff changeset
   272
each equation;
wenzelm
parents: 8832
diff changeset
   273
9489
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
   274
* HOL/While is a new theory that provides a while-combinator. It
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
   275
permits the definition of tail-recursive functions without the
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
   276
provision of a termination measure. The latter is necessary once the
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
   277
invariant proof rule for while is applied.
9457
966974a7a5b3 * HOL/While
nipkow
parents: 9437
diff changeset
   278
8925
f4599af94b83 SetInterval
nipkow
parents: 8921
diff changeset
   279
* HOL: new (overloaded) notation for the set of elements below/above some
f4599af94b83 SetInterval
nipkow
parents: 8921
diff changeset
   280
element: {..u}, {..u(}, {l..}, {)l..}. See theory SetInterval.
f4599af94b83 SetInterval
nipkow
parents: 8921
diff changeset
   281
8848
wenzelm
parents: 8832
diff changeset
   282
* HOL: theorems impI, allI, ballI bound as "strip";
wenzelm
parents: 8832
diff changeset
   283
9737
7aae235675dc *** empty log message ***
nipkow
parents: 9724
diff changeset
   284
* new function rulify: thm -> thm for turning outer -->/! into ==>/?; behaves
7aae235675dc *** empty log message ***
nipkow
parents: 9724
diff changeset
   285
like eq_spec_mp;
7aae235675dc *** empty log message ***
nipkow
parents: 9724
diff changeset
   286
9489
aa757b35b129 * blast(_tac) now handles actual object-logic rules as assumptions;
wenzelm
parents: 9457
diff changeset
   287
* 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;
wenzelm
parents: 9457
diff changeset
   288
HOL, but was unused);
8626
nipkow
parents: 8621
diff changeset
   289
8887
c0c583ce0b0b * HOL/ML: even fewer consts are declared as global (see theories Ord,
wenzelm
parents: 8848
diff changeset
   290
* 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
   291
instead of "lfp" internally; affects ML packages only);
c0c583ce0b0b * HOL/ML: even fewer consts are declared as global (see theories Ord,
wenzelm
parents: 8848
diff changeset
   292
9349
d43669fb423d * tuned AST representation of nested pairs, avoiding bogus output in
wenzelm
parents: 9335
diff changeset
   293
* tuned AST representation of nested pairs, avoiding bogus output in
d43669fb423d * tuned AST representation of nested pairs, avoiding bogus output in
wenzelm
parents: 9335
diff changeset
   294
case of overlap with user translations (e.g. judgements over tuples);
d43669fb423d * tuned AST representation of nested pairs, avoiding bogus output in
wenzelm
parents: 9335
diff changeset
   295
8412
65f9089f6f71 cases_tac
nipkow
parents: 8392
diff changeset
   296
9542
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   297
*** ZF ***
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   298
9577
9e66e8ed8237 ZF arith
paulson
parents: 9542
diff changeset
   299
* simplification automatically cancels common terms in arithmetic expressions
9e66e8ed8237 ZF arith
paulson
parents: 9542
diff changeset
   300
over nat and int;
9542
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   301
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   302
* new treatment of nat to minimize type-checking: all operators coerce their 
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   303
operands to a natural number using the function natify, making the algebraic
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   304
laws unconditional;
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   305
9577
9e66e8ed8237 ZF arith
paulson
parents: 9542
diff changeset
   306
* as above, for int: operators coerce their operands to an integer using the
9e66e8ed8237 ZF arith
paulson
parents: 9542
diff changeset
   307
function intify;
9542
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   308
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   309
* the integer library now contains many of the usual laws for the orderings, 
9577
9e66e8ed8237 ZF arith
paulson
parents: 9542
diff changeset
   310
including $<=, and monotonicity laws for $+ and $*; 
9542
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   311
9647
e9623f47275b new example ZF/ex/NatSum
paulson
parents: 9612
diff changeset
   312
* new example ZF/ex/NatSum to demonstrate integer arithmetic simplification;
9542
fa19ffdbe1de ZF arith
paulson
parents: 9489
diff changeset
   313
9388
0b039a3575eb // change; also moved entry for AddIffs
paulson
parents: 9383
diff changeset
   314
*** FOL & ZF ***
0b039a3575eb // change; also moved entry for AddIffs
paulson
parents: 9383
diff changeset
   315
0b039a3575eb // change; also moved entry for AddIffs
paulson
parents: 9383
diff changeset
   316
* 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
   317
simplifier and classical reasoner simultaneously;
9388
0b039a3575eb // change; also moved entry for AddIffs
paulson
parents: 9383
diff changeset
   318
0b039a3575eb // change; also moved entry for AddIffs
paulson
parents: 9383
diff changeset
   319
8358
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents: 8283
diff changeset
   320
*** General ***
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents: 8283
diff changeset
   321
9709
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   322
* Provers: blast(_tac) now handles actual object-logic rules as
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   323
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
   324
9709
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   325
* Provers: Simplifier.easy_setup provides a fast path to basic
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   326
Simplifier setup for new object-logics;
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   327
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   328
* 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
   329
9709
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   330
* Pure: improved name spaces: ambiguous output is qualified; support
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   331
for hiding of names;
8729
094dbd0fad0c * improved name spaces: ambiguous output is qualified; support for
wenzelm
parents: 8705
diff changeset
   332
9709
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   333
* 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
   334
option of isabelle and isatool usedir (currently only observed by
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   335
Poly/ML);
8358
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents: 8283
diff changeset
   336
9709
2d0ee9612ef1 * Isar/Provers: 'simp' method now supports 'cong' modifiers;
wenzelm
parents: 9701
diff changeset
   337
* system: provide TAGS file for Isabelle sources;
9052
7db48fe85b05 provide TAGS file for Isabelle sources;
wenzelm
parents: 9028
diff changeset
   338
9701
533df6cedc2d * \isabellestyle{it} produces near math mode output;
wenzelm
parents: 9647
diff changeset
   339
* settings: smart setup of canonical ML_HOME, ISABELLE_INTERFACE, and
533df6cedc2d * \isabellestyle{it} produces near math mode output;
wenzelm
parents: 9647
diff changeset
   340
XSYMBOL_HOME; no longer need to do manual configuration in most
533df6cedc2d * \isabellestyle{it} produces near math mode output;
wenzelm
parents: 9647
diff changeset
   341
situations;
533df6cedc2d * \isabellestyle{it} produces near math mode output;
wenzelm
parents: 9647
diff changeset
   342
9288
06a55195741b infix 'OF' is a version of 'MRS' with more appropriate argument order;
wenzelm
parents: 9239
diff changeset
   343
* 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
   344
order;
06a55195741b infix 'OF' is a version of 'MRS' with more appropriate argument order;
wenzelm
parents: 9239
diff changeset
   345
8994
803533fbb3ec * ML: renamed flags Syntax.trace_norm_ast to Syntax.trace_ast; global
wenzelm
parents: 8991
diff changeset
   346
* 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
   347
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
   348
9330
6861e3b00155 HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents: 9288
diff changeset
   349
* 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
   350
overloading (usually false);
6861e3b00155 HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents: 9288
diff changeset
   351
8518
wenzelm
parents: 8487
diff changeset
   352
* ML: new combinators |>> and |>>> for incremental transformations
wenzelm
parents: 8487
diff changeset
   353
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
   354
8358
a57d72b5d272 * isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents: 8283
diff changeset
   355
8015
wenzelm
parents: 8014
diff changeset
   356
7986
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   357
New in Isabelle99 (October 1999)
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   358
--------------------------------
4649
89ad3eb863a1 changed wrapper mechanism of classical reasoner
oheimb
parents: 4575
diff changeset
   359
5931
325300576da7 Finally removing "Compl" from HOL
paulson
parents: 5781
diff changeset
   360
*** Overview of INCOMPATIBILITIES (see below for more details) ***
325300576da7 Finally removing "Compl" from HOL
paulson
parents: 5781
diff changeset
   361
6922
f5c5b81b3f14 integer division
paulson
parents: 6795
diff changeset
   362
* HOL: The THEN and ELSE parts of conditional expressions (if P then x else y)
f5c5b81b3f14 integer division
paulson
parents: 6795
diff changeset
   363
are no longer simplified.  (This allows the simplifier to unfold recursive
f5c5b81b3f14 integer division
paulson
parents: 6795
diff changeset
   364
functional programs.)  To restore the old behaviour, declare
7215
wenzelm
parents: 7204
diff changeset
   365
wenzelm
parents: 7204
diff changeset
   366
    Delcongs [if_weak_cong];
6922
f5c5b81b3f14 integer division
paulson
parents: 6795
diff changeset
   367
6269
wenzelm
parents: 6259
diff changeset
   368
* HOL: Removed the obsolete syntax "Compl A"; use -A for set
wenzelm
parents: 6259
diff changeset
   369
complement;
5931
325300576da7 Finally removing "Compl" from HOL
paulson
parents: 5781
diff changeset
   370
6269
wenzelm
parents: 6259
diff changeset
   371
* HOL: the predicate "inj" is now defined by translation to "inj_on";
6174
paulson
parents: 6157
diff changeset
   372
7847
5a3fa0c4b215 Eliminated mutual_induct_tac.
berghofe
parents: 7805
diff changeset
   373
* HOL/datatype: mutual_induct_tac no longer exists --
5a3fa0c4b215 Eliminated mutual_induct_tac.
berghofe
parents: 7805
diff changeset
   374
  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
   375
6386
e9e8af97f48f HOL/typedef: fixed type inference for representing set;
wenzelm
parents: 6343
diff changeset
   376
* HOL/typedef: fixed type inference for representing set; type
e9e8af97f48f HOL/typedef: fixed type inference for representing set;
wenzelm
parents: 6343
diff changeset
   377
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
   378
6269
wenzelm
parents: 6259
diff changeset
   379
* ZF: The con_defs part of an inductive definition may no longer refer
wenzelm
parents: 6259
diff changeset
   380
to constants declared in the same theory;
6057
395ea7617554 *** empty log message ***
nipkow
parents: 6028
diff changeset
   381
6269
wenzelm
parents: 6259
diff changeset
   382
* HOL, ZF: the function mk_cases, generated by the inductive
wenzelm
parents: 6259
diff changeset
   383
definition package, has lost an argument.  To simplify its result, it
wenzelm
parents: 6259
diff changeset
   384
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
   385
7215
wenzelm
parents: 7204
diff changeset
   386
* HOL/List: the constructors of type list are now Nil and Cons;
wenzelm
parents: 7204
diff changeset
   387
7619
d78b8b103fd9 incompatibility solver
nipkow
parents: 7595
diff changeset
   388
* Simplifier: the type of the infix ML functions
8729
094dbd0fad0c * improved name spaces: ambiguous output is qualified; support for
wenzelm
parents: 8705
diff changeset
   389
        setSSolver addSSolver setSolver addSolver
7619
d78b8b103fd9 incompatibility solver
nipkow
parents: 7595
diff changeset
   390
is now  simpset * solver -> simpset  where `solver' is a new abstract type
d78b8b103fd9 incompatibility solver
nipkow
parents: 7595
diff changeset
   391
for packaging solvers. A solver is created via
8729
094dbd0fad0c * improved name spaces: ambiguous output is qualified; support for
wenzelm
parents: 8705
diff changeset
   392
        mk_solver: string -> (thm list -> int -> tactic) -> solver
7619
d78b8b103fd9 incompatibility solver
nipkow
parents: 7595
diff changeset
   393
where the string argument is only a comment.
6057
395ea7617554 *** empty log message ***
nipkow
parents: 6028
diff changeset
   394
7647
2ceddd91cd0a proper handling of dangling sort hypotheses (at last!);
wenzelm
parents: 7619
diff changeset
   395
6069
a99879bd9f13 if-then-else syntax for ZF
paulson
parents: 6064
diff changeset
   396
*** Proof tools ***
a99879bd9f13 if-then-else syntax for ZF
paulson
parents: 6064
diff changeset
   397
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   398
* Provers/Arith/fast_lin_arith.ML contains a functor for creating a
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   399
decision procedure for linear arithmetic. Currently it is used for
7593
wenzelm
parents: 7492
diff changeset
   400
types `nat', `int', and `real' in HOL (see below); it can, should and
wenzelm
parents: 7492
diff changeset
   401
will be instantiated for other types and logics as well.
6069
a99879bd9f13 if-then-else syntax for ZF
paulson
parents: 6064
diff changeset
   402
7324
6cb0d0202298 simplifier flex heads.
nipkow
parents: 7320
diff changeset
   403
* The simplifier now accepts rewrite rules with flexible heads, eg
6cb0d0202298 simplifier flex heads.
nipkow
parents: 7320
diff changeset
   404
     hom ?f ==> ?f(?x+?y) = ?f ?x + ?f ?y
6cb0d0202298 simplifier flex heads.
nipkow
parents: 7320
diff changeset
   405
  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
   406
  matching.
6069
a99879bd9f13 if-then-else syntax for ZF
paulson
parents: 6064
diff changeset
   407
7593
wenzelm
parents: 7492
diff changeset
   408
6014
bfd4923b0957 locales
paulson
parents: 5973
diff changeset
   409
*** General ***
bfd4923b0957 locales
paulson
parents: 5973
diff changeset
   410
7986
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   411
* New Isabelle/Isar subsystem provides an alternative to traditional
7215
wenzelm
parents: 7204
diff changeset
   412
tactical theorem proving; together with the ProofGeneral/isar user
wenzelm
parents: 7204
diff changeset
   413
interface it offers an interactive environment for developing human
wenzelm
parents: 7204
diff changeset
   414
readable proof documents (Isar == Intelligible semi-automated
7886
8fa551e22e52 the settings environment is now statically scoped;
wenzelm
parents: 7863
diff changeset
   415
reasoning); for further information see isatool doc isar-ref,
7986
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   416
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
   417
9612
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   418
* improved and simplified presentation of theories: better HTML markup
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   419
(including colors), graph views in several sizes; isatool usedir now
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   420
provides a proper interface for user theories (via -P option); actual
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   421
document preparation based on (PDF)LaTeX is available as well (for
e6ba17cd012e Isar/Pure: renamed 'RS' attribute to 'THEN';
wenzelm
parents: 9577
diff changeset
   422
new-style theories only); see isatool doc system for more information;
7215
wenzelm
parents: 7204
diff changeset
   423
7252
d3ed595dd772 replaced 'ProofGeneral' by 'Proof General';
wenzelm
parents: 7238
diff changeset
   424
* native support for Proof General, both for classic Isabelle and
7986
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   425
Isabelle/Isar;
7215
wenzelm
parents: 7204
diff changeset
   426
7791
wenzelm
parents: 7780
diff changeset
   427
* ML function thm_deps visualizes dependencies of theorems and lemmas,
wenzelm
parents: 7780
diff changeset
   428
using the graph browser tool;
wenzelm
parents: 7780
diff changeset
   429
6751
0e346c73828c Isabelle manuals now also available as PDF;
wenzelm
parents: 6671
diff changeset
   430
* Isabelle manuals now also available as PDF;
0e346c73828c Isabelle manuals now also available as PDF;
wenzelm
parents: 6671
diff changeset
   431
6449
d031cb5ea2fc loadpath replaced;
wenzelm
parents: 6420
diff changeset
   432
* theory loader rewritten from scratch (may not be fully
d031cb5ea2fc loadpath replaced;
wenzelm
parents: 6420
diff changeset
   433
bug-compatible); old loadpath variable has been replaced by show_path,
6671
wenzelm
parents: 6563
diff changeset
   434
add_path, del_path, reset_path functions; new operations such as
7593
wenzelm
parents: 7492
diff changeset
   435
update_thy, touch_thy, remove_thy, use/update_thy_only (see also
wenzelm
parents: 7492
diff changeset
   436
isatool doc ref);
6449
d031cb5ea2fc loadpath replaced;
wenzelm
parents: 6420
diff changeset
   437
7215
wenzelm
parents: 7204
diff changeset
   438
* improved isatool install: option -k creates KDE application icon,
wenzelm
parents: 7204
diff changeset
   439
option -p DIR installs standalone binaries;
wenzelm
parents: 7204
diff changeset
   440
wenzelm
parents: 7204
diff changeset
   441
* added ML_PLATFORM setting (useful for cross-platform installations);
wenzelm
parents: 7204
diff changeset
   442
more robust handling of platform specific ML images for SML/NJ;
wenzelm
parents: 7204
diff changeset
   443
7886
8fa551e22e52 the settings environment is now statically scoped;
wenzelm
parents: 7863
diff changeset
   444
* the settings environment is now statically scoped, i.e. it is never
7986
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   445
created again in sub-processes invoked from isabelle, isatool, or
7886
8fa551e22e52 the settings environment is now statically scoped;
wenzelm
parents: 7863
diff changeset
   446
Isabelle;
8fa551e22e52 the settings environment is now statically scoped;
wenzelm
parents: 7863
diff changeset
   447
7215
wenzelm
parents: 7204
diff changeset
   448
* path element specification '~~' refers to '$ISABELLE_HOME';
wenzelm
parents: 7204
diff changeset
   449
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   450
* in locales, the "assumes" and "defines" parts may be omitted if
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   451
empty;
5973
040f6d2af50d removed prs / prs_fn;
wenzelm
parents: 5931
diff changeset
   452
6269
wenzelm
parents: 6259
diff changeset
   453
* new print_mode "xsymbols" for extended symbol support (e.g. genuine
wenzelm
parents: 6259
diff changeset
   454
long arrows);
6259
488bdc1bd11a path element specification '~~' refers to '$ISABELLE_HOME';
wenzelm
parents: 6174
diff changeset
   455
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   456
* new print_mode "HTML";
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   457
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   458
* new flag show_tags controls display of tags of theorems (which are
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   459
basically just comments that may be attached by some tools);
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   460
6461
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   461
* Isamode 2.6 requires patch to accomodate change of Isabelle font
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   462
mode and goal output format:
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   463
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   464
diff -r Isamode-2.6/elisp/isa-load.el Isamode/elisp/isa-load.el
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   465
244c244
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   466
<       (list (isa-getenv "ISABELLE") "-msymbols" logic-name)
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   467
---
6533
wenzelm
parents: 6482
diff changeset
   468
>       (list (isa-getenv "ISABELLE") "-misabelle_font" "-msymbols" logic-name)
6461
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   469
diff -r Isabelle-2.6/elisp/isa-proofstate.el Isamode/elisp/isa-proofstate.el
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   470
181c181
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   471
< (defconst proofstate-proofstart-regexp "^Level [0-9]+$"
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   472
---
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   473
> (defconst proofstate-proofstart-regexp "^Level [0-9]+"
99c34e50a2c6 Isamode 2.6 requires patch;
wenzelm
parents: 6449
diff changeset
   474
7450
e329ca03fd00 added bind_thms;
wenzelm
parents: 7444
diff changeset
   475
* function bind_thms stores lists of theorems (cf. bind_thm);
e329ca03fd00 added bind_thms;
wenzelm
parents: 7444
diff changeset
   476
7593
wenzelm
parents: 7492
diff changeset
   477
* new shorthand tactics ftac, eatac, datac, fatac;
wenzelm
parents: 7492
diff changeset
   478
wenzelm
parents: 7492
diff changeset
   479
* qed (and friends) now accept "" as result name; in that case the
7986
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   480
theorem is not stored, but proper checks and presentation of the
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   481
result still apply;
7593
wenzelm
parents: 7492
diff changeset
   482
7805
0ae9ddc36fe0 theorem database now also indexes constants "Trueprop", "all",
wenzelm
parents: 7791
diff changeset
   483
* theorem database now also indexes constants "Trueprop", "all",
0ae9ddc36fe0 theorem database now also indexes constants "Trueprop", "all",
wenzelm
parents: 7791
diff changeset
   484
"==>", "=="; thus thms_containing, findI etc. may retrieve more rules;
0ae9ddc36fe0 theorem database now also indexes constants "Trueprop", "all",
wenzelm
parents: 7791
diff changeset
   485
6028
1bfd52528bde *** empty log message ***
oheimb
parents: 6014
diff changeset
   486
6057
395ea7617554 *** empty log message ***
nipkow
parents: 6028
diff changeset
   487
*** HOL ***
395ea7617554 *** empty log message ***
nipkow
parents: 6028
diff changeset
   488
7215
wenzelm
parents: 7204
diff changeset
   489
** HOL arithmetic **
wenzelm
parents: 7204
diff changeset
   490
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   491
* There are now decision procedures for linear arithmetic over nat and
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   492
int:
6131
2d9e609abcdb More Arith.
nipkow
parents: 6070
diff changeset
   493
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   494
1. arith_tac copes with arbitrary formulae involving `=', `<', `<=',
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   495
`+', `-', `Suc', `min', `max' and numerical constants; other subterms
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   496
are treated as atomic; subformulae not involving type `nat' or `int'
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   497
are ignored; quantified subformulae are ignored unless they are
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   498
positive universal or negative existential. The tactic has to be
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   499
invoked by hand and can be a little bit slow. In particular, the
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   500
running time is exponential in the number of occurrences of `min' and
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   501
`max', and `-' on `nat'.
6131
2d9e609abcdb More Arith.
nipkow
parents: 6070
diff changeset
   502
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   503
2. fast_arith_tac is a cut-down version of arith_tac: it only takes
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   504
(negated) (in)equalities among the premises and the conclusion into
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   505
account (i.e. no compound formulae) and does not know about `min' and
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   506
`max', and `-' on `nat'. It is fast and is used automatically by the
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   507
simplifier.
6131
2d9e609abcdb More Arith.
nipkow
parents: 6070
diff changeset
   508
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   509
NB: At the moment, these decision procedures do not cope with mixed
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   510
nat/int formulae where the two parts interact, such as `m < n ==>
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   511
int(m) < int(n)'.
6028
1bfd52528bde *** empty log message ***
oheimb
parents: 6014
diff changeset
   512
7215
wenzelm
parents: 7204
diff changeset
   513
* HOL/Numeral provides a generic theory of numerals (encoded
7313
300487ddfba9 real numerals;
wenzelm
parents: 7300
diff changeset
   514
efficiently as bit strings); setup for types nat/int/real is in place;
7215
wenzelm
parents: 7204
diff changeset
   515
INCOMPATIBILITY: since numeral syntax is now polymorphic, rather than
wenzelm
parents: 7204
diff changeset
   516
int, existing theories and proof scripts may require a few additional
wenzelm
parents: 7204
diff changeset
   517
type constraints;
wenzelm
parents: 7204
diff changeset
   518
wenzelm
parents: 7204
diff changeset
   519
* integer division and remainder can now be performed on constant
wenzelm
parents: 7204
diff changeset
   520
arguments;
7157
paulson
parents: 7125
diff changeset
   521
7215
wenzelm
parents: 7204
diff changeset
   522
* many properties of integer multiplication, division and remainder
wenzelm
parents: 7204
diff changeset
   523
are now available;
6922
f5c5b81b3f14 integer division
paulson
parents: 6795
diff changeset
   524
7287
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   525
* An interface to the Stanford Validity Checker (SVC) is available through the
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   526
tactic svc_tac.  Propositional tautologies and theorems of linear arithmetic
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   527
are proved automatically.  SVC must be installed separately, and its results
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   528
must be TAKEN ON TRUST (Isabelle does not check the proofs, but tags any
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   529
invocation of the underlying oracle).  For SVC see
7444
ee17ad649c26 new SVC url
paulson
parents: 7420
diff changeset
   530
  http://verify.stanford.edu/SVC
6922
f5c5b81b3f14 integer division
paulson
parents: 6795
diff changeset
   531
7125
df7cf6e85501 HOL-Real target now builds an actual image;
wenzelm
parents: 7113
diff changeset
   532
* IsaMakefile: the HOL-Real target now builds an actual image;
df7cf6e85501 HOL-Real target now builds an actual image;
wenzelm
parents: 7113
diff changeset
   533
7215
wenzelm
parents: 7204
diff changeset
   534
wenzelm
parents: 7204
diff changeset
   535
** HOL misc **
wenzelm
parents: 7204
diff changeset
   536
7595
5f5d575ddac3 * HOL/Real/HahnBanach: the Hahn-Banach theorem for real vector spaces
wenzelm
parents: 7593
diff changeset
   537
* 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
   538
(in Isabelle/Isar) -- by Gertrud Bauer;
5f5d575ddac3 * HOL/Real/HahnBanach: the Hahn-Banach theorem for real vector spaces
wenzelm
parents: 7593
diff changeset
   539
7691
b7e8277fa088 added BVC;
wenzelm
parents: 7647
diff changeset
   540
* HOL/BCV: generic model of bytecode verification, i.e. data-flow
b7e8277fa088 added BVC;
wenzelm
parents: 7647
diff changeset
   541
analysis for assembly languages with subtypes;
b7e8277fa088 added BVC;
wenzelm
parents: 7647
diff changeset
   542
6278
37b76155a49e Symbol.output subject to print mode;
wenzelm
parents: 6269
diff changeset
   543
* HOL/TLA (Lamport's Temporal Logic of Actions): major reorganization
37b76155a49e Symbol.output subject to print mode;
wenzelm
parents: 6269
diff changeset
   544
-- avoids syntactic ambiguities and treats state, transition, and
37b76155a49e Symbol.output subject to print mode;
wenzelm
parents: 6269
diff changeset
   545
temporal levels more uniformly; introduces INCOMPATIBILITIES due to
37b76155a49e Symbol.output subject to print mode;
wenzelm
parents: 6269
diff changeset
   546
changed syntax and (many) tactics;
37b76155a49e Symbol.output subject to print mode;
wenzelm
parents: 6269
diff changeset
   547
7791
wenzelm
parents: 7780
diff changeset
   548
* HOL/inductive: Now also handles more general introduction rules such
wenzelm
parents: 7780
diff changeset
   549
  as "ALL y. (y, x) : r --> y : acc r ==> x : acc r"; monotonicity
wenzelm
parents: 7780
diff changeset
   550
  theorems are now maintained within the theory (maintained via the
wenzelm
parents: 7780
diff changeset
   551
  "mono" attribute);
7780
099742c562aa Documented changes to HOL/inductive and function thm_deps.
berghofe
parents: 7691
diff changeset
   552
7238
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   553
* HOL/datatype: Now also handles arbitrarily branching datatypes
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   554
  (using function types) such as
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   555
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   556
  datatype 'a tree = Atom 'a | Branch "nat => 'a tree"
7047
d103b875ef1d Datatype package now handles arbitrarily branching datatypes.
berghofe
parents: 6925
diff changeset
   557
7326
a1555491a966 record_simproc;
wenzelm
parents: 7324
diff changeset
   558
* HOL/record: record_simproc (part of the default simpset) takes care
a1555491a966 record_simproc;
wenzelm
parents: 7324
diff changeset
   559
of selectors applied to updated records; record_split_tac is no longer
7327
wenzelm
parents: 7326
diff changeset
   560
part of the default claset; update_defs may now be removed from the
wenzelm
parents: 7326
diff changeset
   561
simpset in many cases; COMPATIBILITY: old behavior achieved by
7326
a1555491a966 record_simproc;
wenzelm
parents: 7324
diff changeset
   562
a1555491a966 record_simproc;
wenzelm
parents: 7324
diff changeset
   563
  claset_ref () := claset() addSWrapper record_split_wrapper;
a1555491a966 record_simproc;
wenzelm
parents: 7324
diff changeset
   564
  Delsimprocs [record_simproc]
a1555491a966 record_simproc;
wenzelm
parents: 7324
diff changeset
   565
6386
e9e8af97f48f HOL/typedef: fixed type inference for representing set;
wenzelm
parents: 6343
diff changeset
   566
* HOL/typedef: fixed type inference for representing set; type
e9e8af97f48f HOL/typedef: fixed type inference for representing set;
wenzelm
parents: 6343
diff changeset
   567
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
   568
7287
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   569
* HOL/recdef (TFL): 'congs' syntax now expects comma separated list of theorem
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   570
names rather than an ML expression;
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   571
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   572
* HOL/defer_recdef (TFL): like recdef but the well-founded relation can be
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   573
supplied later.  Program schemes can be defined, such as
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   574
    "While B C s = (if B s then While B C (C s) else s)"
d603a06b30df defer_recdef
paulson
parents: 7280
diff changeset
   575
where the well-founded relation can be chosen after B and C have been given.
6563
wenzelm
parents: 6533
diff changeset
   576
7215
wenzelm
parents: 7204
diff changeset
   577
* HOL/List: the constructors of type list are now Nil and Cons;
wenzelm
parents: 7204
diff changeset
   578
INCOMPATIBILITY: while [] and infix # syntax is still there, of
wenzelm
parents: 7204
diff changeset
   579
course, ML tools referring to List.list.op # etc. have to be adapted;
wenzelm
parents: 7204
diff changeset
   580
7238
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   581
* HOL_quantifiers flag superseded by "HOL" print mode, which is
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   582
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
   583
the original Gordon/HOL-style output;
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   584
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   585
* 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
   586
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
   587
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   588
* HOL basic syntax simplified (more orthogonal): all variants of
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   589
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
   590
Eps operator is provided as well: "SOME x. P[x]";
36e58620ffc8 replaced HOL_quantifiers flag by "HOL" print mode;
wenzelm
parents: 7216
diff changeset
   591
7320
e89fd7d0a624 Moved sum_case to theory HOL/Datatype.
berghofe
parents: 7313
diff changeset
   592
* 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
   593
7280
wenzelm
parents: 7261
diff changeset
   594
* HOL/Univ.thy: infix syntax <*>, <+>, <**>, <+> eliminated and made
wenzelm
parents: 7261
diff changeset
   595
thus available for user theories;
wenzelm
parents: 7261
diff changeset
   596
7300
8439bf404c28 * HOLCF/IOA/Sequents: renamed 'Cons' to 'Consq' to avoid clash with HOL/List;
wenzelm
parents: 7287
diff changeset
   597
* 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
   598
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
   599
time;
8439bf404c28 * HOLCF/IOA/Sequents: renamed 'Cons' to 'Consq' to avoid clash with HOL/List;
wenzelm
parents: 7287
diff changeset
   600
7986
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   601
* HOL: new tactic smp_tac: int -> int -> tactic, which applies spec
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   602
several times and then mp;
7492
44b333fb5b80 *** empty log message ***
oheimb
parents: 7450
diff changeset
   603
7215
wenzelm
parents: 7204
diff changeset
   604
7113
paulson
parents: 7047
diff changeset
   605
*** LK ***
paulson
parents: 7047
diff changeset
   606
7215
wenzelm
parents: 7204
diff changeset
   607
* the notation <<...>> is now available as a notation for sequences of
wenzelm
parents: 7204
diff changeset
   608
formulas;
7113
paulson
parents: 7047
diff changeset
   609
paulson
parents: 7047
diff changeset
   610
* the simplifier is now installed
paulson
parents: 7047
diff changeset
   611
8729
094dbd0fad0c * improved name spaces: ambiguous output is qualified; support for
wenzelm
parents: 8705
diff changeset
   612
* the axiom system has been generalized (thanks to Soren Heilmann)
7113
paulson
parents: 7047
diff changeset
   613
paulson
parents: 7047
diff changeset
   614
* the classical reasoner now has a default rule database
paulson
parents: 7047
diff changeset
   615
paulson
parents: 7047
diff changeset
   616
6064
0786b5afd8ee primrec, induct_tac
paulson
parents: 6063
diff changeset
   617
*** ZF ***
0786b5afd8ee primrec, induct_tac
paulson
parents: 6063
diff changeset
   618
0786b5afd8ee primrec, induct_tac
paulson
parents: 6063
diff changeset
   619
* new primrec section allows primitive recursive functions to be given
6269
wenzelm
parents: 6259
diff changeset
   620
directly (as in HOL) over datatypes and the natural numbers;
6064
0786b5afd8ee primrec, induct_tac
paulson
parents: 6063
diff changeset
   621
6269
wenzelm
parents: 6259
diff changeset
   622
* new tactics induct_tac and exhaust_tac for induction (or case
wenzelm
parents: 6259
diff changeset
   623
analysis) over datatypes and the natural numbers;
6064
0786b5afd8ee primrec, induct_tac
paulson
parents: 6063
diff changeset
   624
0786b5afd8ee primrec, induct_tac
paulson
parents: 6063
diff changeset
   625
* the datatype declaration of type T now defines the recursor T_rec;
0786b5afd8ee primrec, induct_tac
paulson
parents: 6063
diff changeset
   626
6141
a6922171b396 removal of the (thm list) argument of mk_cases
paulson
parents: 6131
diff changeset
   627
* simplification automatically does freeness reasoning for datatype
6269
wenzelm
parents: 6259
diff changeset
   628
constructors;
6141
a6922171b396 removal of the (thm list) argument of mk_cases
paulson
parents: 6131
diff changeset
   629
6269
wenzelm
parents: 6259
diff changeset
   630
* automatic type-inference, with AddTCs command to insert new
wenzelm
parents: 6259
diff changeset
   631
type-checking rules;
6155
e387d188d0ca ZF typechecking
paulson
parents: 6141
diff changeset
   632
6269
wenzelm
parents: 6259
diff changeset
   633
* datatype introduction rules are now added as Safe Introduction rules
wenzelm
parents: 6259
diff changeset
   634
to the claset;
6155
e387d188d0ca ZF typechecking
paulson
parents: 6141
diff changeset
   635
6269
wenzelm
parents: 6259
diff changeset
   636
* the syntax "if P then x else y" is now available in addition to
wenzelm
parents: 6259
diff changeset
   637
if(P,x,y);
wenzelm
parents: 6259
diff changeset
   638
6069
a99879bd9f13 if-then-else syntax for ZF
paulson
parents: 6064
diff changeset
   639
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   640
*** Internal programming interfaces ***
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   641
7919
35c18affc1d8 tuned simplifier trace output; new flag debug_simp
wenzelm
parents: 7886
diff changeset
   642
* tuned simplifier trace output; new flag debug_simp;
35c18affc1d8 tuned simplifier trace output; new flag debug_simp
wenzelm
parents: 7886
diff changeset
   643
7420
cba45c114f3b structures Vartab / Termtab (instances of TableFun);
wenzelm
parents: 7327
diff changeset
   644
* structures Vartab / Termtab (instances of TableFun) offer efficient
cba45c114f3b structures Vartab / Termtab (instances of TableFun);
wenzelm
parents: 7327
diff changeset
   645
tables indexed by indexname_ord / term_ord (compatible with aconv);
cba45c114f3b structures Vartab / Termtab (instances of TableFun);
wenzelm
parents: 7327
diff changeset
   646
6386
e9e8af97f48f HOL/typedef: fixed type inference for representing set;
wenzelm
parents: 6343
diff changeset
   647
* AxClass.axclass_tac lost the theory argument;
e9e8af97f48f HOL/typedef: fixed type inference for representing set;
wenzelm
parents: 6343
diff changeset
   648
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   649
* tuned current_goals_markers semantics: begin / end goal avoids
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   650
printing empty lines;
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   651
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   652
* removed prs and prs_fn hook, which was broken because it did not
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   653
include \n in its semantics, forcing writeln to add one
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   654
uncoditionally; replaced prs_fn by writeln_fn; consider std_output:
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   655
string -> unit if you really want to output text without newline;
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   656
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   657
* Symbol.output subject to print mode; INCOMPATIBILITY: defaults to
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   658
plain output, interface builders may have to enable 'isabelle_font'
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   659
mode to get Isabelle font glyphs as before;
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   660
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   661
* refined token_translation interface; INCOMPATIBILITY: output length
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   662
now of type real instead of int;
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   663
7196
c8d1002060e8 theory loader actions;
wenzelm
parents: 7157
diff changeset
   664
* theory loader actions may be traced via new ThyInfo.add_hook
c8d1002060e8 theory loader actions;
wenzelm
parents: 7157
diff changeset
   665
interface (see src/Pure/Thy/thy_info.ML); example application: keep
c8d1002060e8 theory loader actions;
wenzelm
parents: 7157
diff changeset
   666
your own database of information attached to *whole* theories -- as
c8d1002060e8 theory loader actions;
wenzelm
parents: 7157
diff changeset
   667
opposed to intra-theory data slots offered via TheoryDataFun;
c8d1002060e8 theory loader actions;
wenzelm
parents: 7157
diff changeset
   668
7647
2ceddd91cd0a proper handling of dangling sort hypotheses (at last!);
wenzelm
parents: 7619
diff changeset
   669
* proper handling of dangling sort hypotheses (at last!);
2ceddd91cd0a proper handling of dangling sort hypotheses (at last!);
wenzelm
parents: 7619
diff changeset
   670
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
   671
extra sort hypotheses that can be witnessed from the type signature;
7986
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   672
the force_strip_shyps flag is gone, any remaining shyps are simply
9d319a76dbeb Isabelle99;
wenzelm
parents: 7919
diff changeset
   673
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
   674
6343
97c697a32b73 updated;
wenzelm
parents: 6278
diff changeset
   675
6064
0786b5afd8ee primrec, induct_tac
paulson
parents: 6063
diff changeset
   676
5781
d37380544c39 tuned current_goals_markers;
wenzelm
parents: 5731
diff changeset
   677
New in Isabelle98-1 (October 1998)
d37380544c39 tuned current_goals_markers;
wenzelm
parents: 5731
diff changeset
   678
----------------------------------
d37380544c39 tuned current_goals_markers;
wenzelm
parents: 5731
diff changeset
   679
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   680
*** Overview of INCOMPATIBILITIES (see below for more details) ***
4842
0afcae75b34a *** empty log message ***
wenzelm
parents: 4838
diff changeset
   681
5726
wenzelm
parents: 5722
diff changeset
   682
* several changes of automated proof tools;
5373
wenzelm
parents: 5363
diff changeset
   683
5726
wenzelm
parents: 5722
diff changeset
   684
* HOL: major changes to the inductive and datatype packages, including
wenzelm
parents: 5722
diff changeset
   685
some minor incompatibilities of theory syntax;
5214
75c6392d1274 Adapted to new datatype package.
berghofe
parents: 5207
diff changeset
   686
5726
wenzelm
parents: 5722
diff changeset
   687
* HOL: renamed r^-1 to 'converse' from 'inverse'; 'inj_onto' is now
5217
wenzelm
parents: 5214
diff changeset
   688
called `inj_on';
5160
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
   689
5275
de5d5e5eb692 *** empty log message ***
nipkow
parents: 5267
diff changeset
   690
* HOL: removed duplicate thms in Arith:
de5d5e5eb692 *** empty log message ***
nipkow
parents: 5267
diff changeset
   691
  less_imp_add_less  should be replaced by  trans_less_add1
de5d5e5eb692 *** empty log message ***
nipkow
parents: 5267
diff changeset
   692
  le_imp_add_le      should be replaced by  trans_le_add1
5160
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
   693
5726
wenzelm
parents: 5722
diff changeset
   694
* HOL: unary minus is now overloaded (new type constraints may be
wenzelm
parents: 5722
diff changeset
   695
required);
5490
85855f65d0c6 From Compl(A) to -A
paulson
parents: 5475
diff changeset
   696
5726
wenzelm
parents: 5722
diff changeset
   697
* HOL and ZF: unary minus for integers is now #- instead of #~.  In
wenzelm
parents: 5722
diff changeset
   698
ZF, expressions such as n#-1 must be changed to n#- 1, since #-1 is
wenzelm
parents: 5722
diff changeset
   699
now taken as an integer constant.
5541
f8fb27db4bcd unary minus
paulson
parents: 5526
diff changeset
   700
5726
wenzelm
parents: 5722
diff changeset
   701
* Pure: ML function 'theory_of' renamed to 'theory';
5397
034ed25535b9 * Pure: ML function 'theory_of' replaced by 'theory';
wenzelm
parents: 5373
diff changeset
   702
5363
0cf15843b82f isatool install;
wenzelm
parents: 5332
diff changeset
   703
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   704
*** Proof tools ***
4880
312115d20c45 *** empty log message ***
nipkow
parents: 4879
diff changeset
   705
5657
1a6c9c6a3f8e 2. The simplifier now knows a little bit about nat-arithmetic.
nipkow
parents: 5651
diff changeset
   706
* Simplifier:
1a6c9c6a3f8e 2. The simplifier now knows a little bit about nat-arithmetic.
nipkow
parents: 5651
diff changeset
   707
  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
   708
     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
   709
        simplify.
1a6c9c6a3f8e 2. The simplifier now knows a little bit about nat-arithmetic.
nipkow
parents: 5651
diff changeset
   710
     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
   711
        rotate premises to achieve further simplification.
1a6c9c6a3f8e 2. The simplifier now knows a little bit about nat-arithmetic.
nipkow
parents: 5651
diff changeset
   712
     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
   713
     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
   714
  2. The simplifier now knows a little bit about nat-arithmetic.
4880
312115d20c45 *** empty log message ***
nipkow
parents: 4879
diff changeset
   715
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   716
* Classical reasoner: wrapper mechanism for the classical reasoner now
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   717
allows for selected deletion of wrappers, by introduction of names for
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   718
wrapper functionals.  This implies that addbefore, addSbefore,
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   719
addaltern, and addSaltern now take a pair (name, tactic) as argument,
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   720
and that adding two tactics with the same name overwrites the first
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   721
one (emitting a warning).
4824
df8fc4626a9e *** empty log message ***
oheimb
parents: 4806
diff changeset
   722
  type wrapper = (int -> tactic) -> (int -> tactic)
4649
89ad3eb863a1 changed wrapper mechanism of classical reasoner
oheimb
parents: 4575
diff changeset
   723
  setWrapper, setSWrapper, compWrapper and compSWrapper are replaced by
4824
df8fc4626a9e *** empty log message ***
oheimb
parents: 4806
diff changeset
   724
  addWrapper, addSWrapper: claset * (string * wrapper) -> claset
df8fc4626a9e *** empty log message ***
oheimb
parents: 4806
diff changeset
   725
  delWrapper, delSWrapper: claset *  string            -> claset
4649
89ad3eb863a1 changed wrapper mechanism of classical reasoner
oheimb
parents: 4575
diff changeset
   726
  getWrapper is renamed to appWrappers, getSWrapper to appSWrappers;
89ad3eb863a1 changed wrapper mechanism of classical reasoner
oheimb
parents: 4575
diff changeset
   727
5705
56f2030c46c6 tuned (all proofs are INSTABLE by David's definition of instability);
wenzelm
parents: 5671
diff changeset
   728
* Classical reasoner: addbefore/addSbefore now have APPEND/ORELSE
5726
wenzelm
parents: 5722
diff changeset
   729
semantics; addbefore now affects only the unsafe part of step_tac
wenzelm
parents: 5722
diff changeset
   730
etc.; this affects addss/auto_tac/force_tac, so EXISTING PROOFS MAY
wenzelm
parents: 5722
diff changeset
   731
FAIL, but proofs should be fixable easily, e.g. by replacing Auto_tac
wenzelm
parents: 5722
diff changeset
   732
by Force_tac;
5524
38f2a518a811 *** empty log message ***
oheimb
parents: 5490
diff changeset
   733
5726
wenzelm
parents: 5722
diff changeset
   734
* Classical reasoner: setwrapper to setWrapper and compwrapper to
wenzelm
parents: 5722
diff changeset
   735
compWrapper; added safe wrapper (and access functions for it);
5524
38f2a518a811 *** empty log message ***
oheimb
parents: 5490
diff changeset
   736
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   737
* HOL/split_all_tac is now much faster and fails if there is nothing
5726
wenzelm
parents: 5722
diff changeset
   738
to split.  Some EXISTING PROOFS MAY REQUIRE ADAPTION because the order
wenzelm
parents: 5722
diff changeset
   739
and the names of the automatically generated variables have changed.
wenzelm
parents: 5722
diff changeset
   740
split_all_tac has moved within claset() from unsafe wrappers to safe
wenzelm
parents: 5722
diff changeset
   741
wrappers, which means that !!-bound variables are split much more
wenzelm
parents: 5722
diff changeset
   742
aggressively, and safe_tac and clarify_tac now split such variables.
wenzelm
parents: 5722
diff changeset
   743
If this splitting is not appropriate, use delSWrapper "split_all_tac".
wenzelm
parents: 5722
diff changeset
   744
Note: the same holds for record_split_tac, which does the job of
wenzelm
parents: 5722
diff changeset
   745
split_all_tac for record fields.
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   746
5726
wenzelm
parents: 5722
diff changeset
   747
* HOL/Simplifier: Rewrite rules for case distinctions can now be added
wenzelm
parents: 5722
diff changeset
   748
permanently to the default simpset using Addsplits just like
wenzelm
parents: 5722
diff changeset
   749
Addsimps. They can be removed via Delsplits just like
wenzelm
parents: 5722
diff changeset
   750
Delsimps. Lower-case versions are also available.
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   751
5726
wenzelm
parents: 5722
diff changeset
   752
* HOL/Simplifier: The rule split_if is now part of the default
wenzelm
parents: 5722
diff changeset
   753
simpset. This means that the simplifier will eliminate all occurrences
wenzelm
parents: 5722
diff changeset
   754
of if-then-else in the conclusion of a goal. To prevent this, you can
wenzelm
parents: 5722
diff changeset
   755
either remove split_if completely from the default simpset by
wenzelm
parents: 5722
diff changeset
   756
`Delsplits [split_if]' or remove it in a specific call of the
wenzelm
parents: 5722
diff changeset
   757
simplifier using `... delsplits [split_if]'.  You can also add/delete
wenzelm
parents: 5722
diff changeset
   758
other case splitting rules to/from the default simpset: every datatype
wenzelm
parents: 5722
diff changeset
   759
generates suitable rules `split_t_case' and `split_t_case_asm' (where
wenzelm
parents: 5722
diff changeset
   760
t is the name of the datatype).
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   761
5726
wenzelm
parents: 5722
diff changeset
   762
* Classical reasoner / Simplifier combination: new force_tac (and
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   763
derivatives Force_tac, force) combines rewriting and classical
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   764
reasoning (and whatever other tools) similarly to auto_tac, but is
5726
wenzelm
parents: 5722
diff changeset
   765
aimed to solve the given subgoal completely.
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   766
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   767
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   768
*** General ***
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   769
5217
wenzelm
parents: 5214
diff changeset
   770
* new top-level commands `Goal' and `Goalw' that improve upon `goal'
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   771
and `goalw': the theory is no longer needed as an explicit argument -
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   772
the current theory context is used; assumptions are no longer returned
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   773
at the ML-level unless one of them starts with ==> or !!; it is
5217
wenzelm
parents: 5214
diff changeset
   774
recommended to convert to these new commands using isatool fixgoal
wenzelm
parents: 5214
diff changeset
   775
(backup your sources first!);
4842
0afcae75b34a *** empty log message ***
wenzelm
parents: 4838
diff changeset
   776
5217
wenzelm
parents: 5214
diff changeset
   777
* new top-level commands 'thm' and 'thms' for retrieving theorems from
5207
wenzelm
parents: 5160
diff changeset
   778
the current theory context, and 'theory' to lookup stored theories;
4806
79cc986bc4d7 bug fixes
paulson
parents: 4801
diff changeset
   779
5722
c669e2161b08 locales
paulson
parents: 5710
diff changeset
   780
* new theory section 'locale' for declaring constants, assumptions and
c669e2161b08 locales
paulson
parents: 5710
diff changeset
   781
definitions that have local scope;
c669e2161b08 locales
paulson
parents: 5710
diff changeset
   782
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   783
* new theory section 'nonterminals' for purely syntactic types;
4858
4b15e9e1b3a5 new theory section 'nonterminals';
wenzelm
parents: 4842
diff changeset
   784
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   785
* new theory section 'setup' for generic ML setup functions
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   786
(e.g. package initialization);
4869
f3d30c02c1db new theory section 'setup';
wenzelm
parents: 4858
diff changeset
   787
5131
dd4ac220b8b4 the distribution now includes Isabelle icons: see
wenzelm
parents: 5128
diff changeset
   788
* the distribution now includes Isabelle icons: see
dd4ac220b8b4 the distribution now includes Isabelle icons: see
wenzelm
parents: 5128
diff changeset
   789
lib/logo/isabelle-{small,tiny}.xpm;
dd4ac220b8b4 the distribution now includes Isabelle icons: see
wenzelm
parents: 5128
diff changeset
   790
5363
0cf15843b82f isatool install;
wenzelm
parents: 5332
diff changeset
   791
* isatool install - install binaries with absolute references to
0cf15843b82f isatool install;
wenzelm
parents: 5332
diff changeset
   792
ISABELLE_HOME/bin;
0cf15843b82f isatool install;
wenzelm
parents: 5332
diff changeset
   793
5572
53c6ea1e6d94 isatool logo;
wenzelm
parents: 5541
diff changeset
   794
* isatool logo -- create instances of the Isabelle logo (as EPS);
53c6ea1e6d94 isatool logo;
wenzelm
parents: 5541
diff changeset
   795
5407
b450fea6d70c * print mode 'emacs' reserved for Isamode;
wenzelm
parents: 5397
diff changeset
   796
* print mode 'emacs' reserved for Isamode;
b450fea6d70c * print mode 'emacs' reserved for Isamode;
wenzelm
parents: 5397
diff changeset
   797
5726
wenzelm
parents: 5722
diff changeset
   798
* support multiple print (ast) translations per constant name;
wenzelm
parents: 5722
diff changeset
   799
6925
8d4d45ec6a3d theorems involving oracles are now printed with a suffixed [!];
wenzelm
parents: 6922
diff changeset
   800
* theorems involving oracles are now printed with a suffixed [!];
8d4d45ec6a3d theorems involving oracles are now printed with a suffixed [!];
wenzelm
parents: 6922
diff changeset
   801
4711
75a9ef36b1fe removed pred;
wenzelm
parents: 4683
diff changeset
   802
4661
paulson
parents: 4655
diff changeset
   803
*** HOL ***
paulson
parents: 4655
diff changeset
   804
5710
wenzelm
parents: 5709
diff changeset
   805
* there is now a tutorial on Isabelle/HOL (do 'isatool doc tutorial');
5709
35b07f8e67b6 Tutorial
nipkow
parents: 5705
diff changeset
   806
5217
wenzelm
parents: 5214
diff changeset
   807
* HOL/inductive package reorganized and improved: now supports mutual
5267
41a01176b9de disjointness
paulson
parents: 5251
diff changeset
   808
definitions such as
5217
wenzelm
parents: 5214
diff changeset
   809
wenzelm
parents: 5214
diff changeset
   810
  inductive EVEN ODD
wenzelm
parents: 5214
diff changeset
   811
    intrs
wenzelm
parents: 5214
diff changeset
   812
      null "0 : EVEN"
wenzelm
parents: 5214
diff changeset
   813
      oddI "n : EVEN ==> Suc n : ODD"
wenzelm
parents: 5214
diff changeset
   814
      evenI "n : ODD ==> Suc n : EVEN"
wenzelm
parents: 5214
diff changeset
   815
wenzelm
parents: 5214
diff changeset
   816
new theorem list "elims" contains an elimination rule for each of the
wenzelm
parents: 5214
diff changeset
   817
recursive sets; inductive definitions now handle disjunctive premises
wenzelm
parents: 5214
diff changeset
   818
correctly (also ZF);
5214
75c6392d1274 Adapted to new datatype package.
berghofe
parents: 5207
diff changeset
   819
5217
wenzelm
parents: 5214
diff changeset
   820
INCOMPATIBILITIES: requires Inductive as an ancestor; component
wenzelm
parents: 5214
diff changeset
   821
"mutual_induct" no longer exists - the induction rule is always
wenzelm
parents: 5214
diff changeset
   822
contained in "induct";
wenzelm
parents: 5214
diff changeset
   823
wenzelm
parents: 5214
diff changeset
   824
wenzelm
parents: 5214
diff changeset
   825
* HOL/datatype package re-implemented and greatly improved: now
5267
41a01176b9de disjointness
paulson
parents: 5251
diff changeset
   826
supports mutually recursive datatypes such as
5217
wenzelm
parents: 5214
diff changeset
   827
wenzelm
parents: 5214
diff changeset
   828
  datatype
wenzelm
parents: 5214
diff changeset
   829
    'a aexp = IF_THEN_ELSE ('a bexp) ('a aexp) ('a aexp)
wenzelm
parents: 5214
diff changeset
   830
            | SUM ('a aexp) ('a aexp)
wenzelm
parents: 5214
diff changeset
   831
            | DIFF ('a aexp) ('a aexp)
wenzelm
parents: 5214
diff changeset
   832
            | NUM 'a
wenzelm
parents: 5214
diff changeset
   833
  and
wenzelm
parents: 5214
diff changeset
   834
    'a bexp = LESS ('a aexp) ('a aexp)
wenzelm
parents: 5214
diff changeset
   835
            | AND ('a bexp) ('a bexp)
wenzelm
parents: 5214
diff changeset
   836
            | OR ('a bexp) ('a bexp)
wenzelm
parents: 5214
diff changeset
   837
5267
41a01176b9de disjointness
paulson
parents: 5251
diff changeset
   838
as well as indirectly recursive datatypes such as
5214
75c6392d1274 Adapted to new datatype package.
berghofe
parents: 5207
diff changeset
   839
5217
wenzelm
parents: 5214
diff changeset
   840
  datatype
wenzelm
parents: 5214
diff changeset
   841
    ('a, 'b) term = Var 'a
wenzelm
parents: 5214
diff changeset
   842
                  | App 'b ((('a, 'b) term) list)
5214
75c6392d1274 Adapted to new datatype package.
berghofe
parents: 5207
diff changeset
   843
5217
wenzelm
parents: 5214
diff changeset
   844
The new tactic  mutual_induct_tac [<var_1>, ..., <var_n>] i  performs
wenzelm
parents: 5214
diff changeset
   845
induction on mutually / indirectly recursive datatypes.
wenzelm
parents: 5214
diff changeset
   846
wenzelm
parents: 5214
diff changeset
   847
Primrec equations are now stored in theory and can be accessed via
wenzelm
parents: 5214
diff changeset
   848
<function_name>.simps.
wenzelm
parents: 5214
diff changeset
   849
wenzelm
parents: 5214
diff changeset
   850
INCOMPATIBILITIES:
5214
75c6392d1274 Adapted to new datatype package.
berghofe
parents: 5207
diff changeset
   851
5217
wenzelm
parents: 5214
diff changeset
   852
  - Theories using datatypes must now have theory Datatype as an
wenzelm
parents: 5214
diff changeset
   853
    ancestor.
wenzelm
parents: 5214
diff changeset
   854
  - The specific <typename>.induct_tac no longer exists - use the
wenzelm
parents: 5214
diff changeset
   855
    generic induct_tac instead.
5226
89934cd022a9 Replaced nat.exhaustion by nat.exhaust
berghofe
parents: 5217
diff changeset
   856
  - natE has been renamed to nat.exhaust - use exhaust_tac
5217
wenzelm
parents: 5214
diff changeset
   857
    instead of res_inst_tac ... natE. Note that the variable
5226
89934cd022a9 Replaced nat.exhaustion by nat.exhaust
berghofe
parents: 5217
diff changeset
   858
    names in nat.exhaust differ from the names in natE, this
5217
wenzelm
parents: 5214
diff changeset
   859
    may cause some "fragile" proofs to fail.
wenzelm
parents: 5214
diff changeset
   860
  - The theorems split_<typename>_case and split_<typename>_case_asm
wenzelm
parents: 5214
diff changeset
   861
    have been renamed to <typename>.split and <typename>.split_asm.
wenzelm
parents: 5214
diff changeset
   862
  - Since default sorts of type variables are now handled correctly,
wenzelm
parents: 5214
diff changeset
   863
    some datatype definitions may have to be annotated with explicit
wenzelm
parents: 5214
diff changeset
   864
    sort constraints.
wenzelm
parents: 5214
diff changeset
   865
  - Primrec definitions no longer require function name and type
wenzelm
parents: 5214
diff changeset
   866
    of recursive argument.
5214
75c6392d1274 Adapted to new datatype package.
berghofe
parents: 5207
diff changeset
   867
5217
wenzelm
parents: 5214
diff changeset
   868
Consider using isatool fixdatatype to adapt your theories and proof
wenzelm
parents: 5214
diff changeset
   869
scripts to the new package (backup your sources first!).
wenzelm
parents: 5214
diff changeset
   870
wenzelm
parents: 5214
diff changeset
   871
5726
wenzelm
parents: 5722
diff changeset
   872
* HOL/record package: considerably improved implementation; now
wenzelm
parents: 5722
diff changeset
   873
includes concrete syntax for record types, terms, updates; theorems
wenzelm
parents: 5722
diff changeset
   874
for surjective pairing and splitting !!-bound record variables; proof
wenzelm
parents: 5722
diff changeset
   875
support is as follows:
wenzelm
parents: 5722
diff changeset
   876
wenzelm
parents: 5722
diff changeset
   877
  1) standard conversions (selectors or updates applied to record
wenzelm
parents: 5722
diff changeset
   878
constructor terms) are part of the standard simpset;
wenzelm
parents: 5722
diff changeset
   879
wenzelm
parents: 5722
diff changeset
   880
  2) inject equations of the form ((x, y) = (x', y')) == x=x' & y=y' are
wenzelm
parents: 5722
diff changeset
   881
made part of standard simpset and claset via addIffs;
wenzelm
parents: 5722
diff changeset
   882
wenzelm
parents: 5722
diff changeset
   883
  3) a tactic for record field splitting (record_split_tac) is part of
wenzelm
parents: 5722
diff changeset
   884
the standard claset (addSWrapper);
wenzelm
parents: 5722
diff changeset
   885
wenzelm
parents: 5722
diff changeset
   886
To get a better idea about these rules you may retrieve them via
wenzelm
parents: 5722
diff changeset
   887
something like 'thms "foo.simps"' or 'thms "foo.iffs"', where "foo" is
wenzelm
parents: 5722
diff changeset
   888
the name of your record type.
wenzelm
parents: 5722
diff changeset
   889
wenzelm
parents: 5722
diff changeset
   890
The split tactic 3) conceptually simplifies by the following rule:
wenzelm
parents: 5722
diff changeset
   891
wenzelm
parents: 5722
diff changeset
   892
  "(!!x. PROP ?P x) == (!!a b. PROP ?P (a, b))"
wenzelm
parents: 5722
diff changeset
   893
wenzelm
parents: 5722
diff changeset
   894
Thus any record variable that is bound by meta-all will automatically
wenzelm
parents: 5722
diff changeset
   895
blow up into some record constructor term, consequently the
wenzelm
parents: 5722
diff changeset
   896
simplifications of 1), 2) apply.  Thus force_tac, auto_tac etc. shall
wenzelm
parents: 5722
diff changeset
   897
solve record problems automatically.
wenzelm
parents: 5722
diff changeset
   898
5214
75c6392d1274 Adapted to new datatype package.
berghofe
parents: 5207
diff changeset
   899
5125
463a0e9df5b5 reorganized the main HOL image;
wenzelm
parents: 5109
diff changeset
   900
* reorganized the main HOL image: HOL/Integ and String loaded by
463a0e9df5b5 reorganized the main HOL image;
wenzelm
parents: 5109
diff changeset
   901
default; theory Main includes everything;
463a0e9df5b5 reorganized the main HOL image;
wenzelm
parents: 5109
diff changeset
   902
5650
38bda28c68a2 integer simprocs
paulson
parents: 5572
diff changeset
   903
* automatic simplification of integer sums and comparisons, using cancellation;
38bda28c68a2 integer simprocs
paulson
parents: 5572
diff changeset
   904
5526
e7617b57a3e6 *** empty log message ***
oheimb
parents: 5524
diff changeset
   905
* added option_map_eq_Some and not_Some_eq to the default simpset and claset;
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   906
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   907
* added disj_not1 = "(~P | Q) = (P --> Q)" to the default simpset;
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   908
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   909
* many new identities for unions, intersections, set difference, etc.;
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   910
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   911
* expand_if, expand_split, expand_sum_case and expand_nat_case are now
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   912
called split_if, split_split, split_sum_case and split_nat_case (to go
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   913
with add/delsplits);
5125
463a0e9df5b5 reorganized the main HOL image;
wenzelm
parents: 5109
diff changeset
   914
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   915
* HOL/Prod introduces simplification procedure unit_eq_proc rewriting
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   916
(?x::unit) = (); this is made part of the default simpset, which COULD
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   917
MAKE EXISTING PROOFS FAIL under rare circumstances (consider
5207
wenzelm
parents: 5160
diff changeset
   918
'Delsimprocs [unit_eq_proc];' as last resort); also note that
wenzelm
parents: 5160
diff changeset
   919
unit_abs_eta_conv is added in order to counter the effect of
wenzelm
parents: 5160
diff changeset
   920
unit_eq_proc on (%u::unit. f u), replacing it by f rather than by
wenzelm
parents: 5160
diff changeset
   921
%u.f();
5125
463a0e9df5b5 reorganized the main HOL image;
wenzelm
parents: 5109
diff changeset
   922
5217
wenzelm
parents: 5214
diff changeset
   923
* HOL/Fun INCOMPATIBILITY: `inj_onto' is now called `inj_on' (which
wenzelm
parents: 5214
diff changeset
   924
makes more sense);
5109
b3d18eb3ac20 Adapted to new inductive definition package.
berghofe
parents: 5106
diff changeset
   925
5475
410172655d64 equals0D
paulson
parents: 5428
diff changeset
   926
* HOL/Set INCOMPATIBILITY: rule `equals0D' is now a well-formed destruct rule;
410172655d64 equals0D
paulson
parents: 5428
diff changeset
   927
  It and 'sym RS equals0D' are now in the default  claset, giving automatic
410172655d64 equals0D
paulson
parents: 5428
diff changeset
   928
  disjointness reasoning but breaking a few old proofs.
5267
41a01176b9de disjointness
paulson
parents: 5251
diff changeset
   929
5217
wenzelm
parents: 5214
diff changeset
   930
* HOL/Relation INCOMPATIBILITY: renamed the relational operator r^-1
wenzelm
parents: 5214
diff changeset
   931
to 'converse' from 'inverse' (for compatibility with ZF and some
wenzelm
parents: 5214
diff changeset
   932
literature);
5085
8e5a7942fdea simplification procedure unit_eq_proc rewrites (?x::unit) = ();
wenzelm
parents: 5077
diff changeset
   933
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   934
* HOL/recdef can now declare non-recursive functions, with {} supplied as
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   935
the well-founded relation;
4838
196100237656 cleanup for split_all_tac as wrapper in claset()
oheimb
parents: 4835
diff changeset
   936
5490
85855f65d0c6 From Compl(A) to -A
paulson
parents: 5475
diff changeset
   937
* 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
   938
    Compl A.  The "Compl" syntax remains available as input syntax for this
85855f65d0c6 From Compl(A) to -A
paulson
parents: 5475
diff changeset
   939
    release ONLY.
85855f65d0c6 From Compl(A) to -A
paulson
parents: 5475
diff changeset
   940
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   941
* HOL/Update: new theory of function updates:
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   942
    f(a:=b) == %x. if x=a then b else f x
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   943
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
   944
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   945
* HOL/Vimage: new theory for inverse image of a function, syntax f-``B;
4899
447d6b2956ba HOL/Update
paulson
parents: 4880
diff changeset
   946
5282
80c75c862a8f *** empty log message ***
nipkow
parents: 5275
diff changeset
   947
* HOL/List:
80c75c862a8f *** empty log message ***
nipkow
parents: 5275
diff changeset
   948
  - new function list_update written xs[i:=v] that updates the i-th
80c75c862a8f *** empty log message ***
nipkow
parents: 5275
diff changeset
   949
    list position. May also be iterated as in xs[i:=a,j:=b,...].
5428
5a6c4f666a25 Function 'upt'
nipkow
parents: 5407
diff changeset
   950
  - new function `upt' written [i..j(] which generates the list
5a6c4f666a25 Function 'upt'
nipkow
parents: 5407
diff changeset
   951
    [i,i+1,...,j-1], i.e. the upper bound is excluded. To include the upper
5a6c4f666a25 Function 'upt'
nipkow
parents: 5407
diff changeset
   952
    bound write [i..j], which is a shorthand for [i..j+1(].
5282
80c75c862a8f *** empty log message ***
nipkow
parents: 5275
diff changeset
   953
  - new lexicographic orderings and corresponding wellfoundedness theorems.
4779
paulson
parents: 4766
diff changeset
   954
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   955
* HOL/Arith:
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   956
  - removed 'pred' (predecessor) function;
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   957
  - generalized some theorems about n-1;
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   958
  - many new laws about "div" and "mod";
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   959
  - new laws about greatest common divisors (see theory ex/Primes);
4766
9658aab68363 *** empty log message ***
oheimb
parents: 4747
diff changeset
   960
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   961
* HOL/Relation: renamed the relational operator r^-1 "converse"
4842
0afcae75b34a *** empty log message ***
wenzelm
parents: 4838
diff changeset
   962
instead of "inverse";
4711
75a9ef36b1fe removed pred;
wenzelm
parents: 4683
diff changeset
   963
5651
ca45d6126c8a *** empty log message ***
nipkow
parents: 5650
diff changeset
   964
* HOL/Induct/Multiset: a theory of multisets, including the wellfoundedness
ca45d6126c8a *** empty log message ***
nipkow
parents: 5650
diff changeset
   965
  of the multiset ordering;
ca45d6126c8a *** empty log message ***
nipkow
parents: 5650
diff changeset
   966
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   967
* directory HOL/Real: a construction of the reals using Dedekind cuts
5651
ca45d6126c8a *** empty log message ***
nipkow
parents: 5650
diff changeset
   968
  (not included by default);
4835
f90a427d903f *** empty log message ***
nipkow
parents: 4828
diff changeset
   969
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
   970
* directory HOL/UNITY: Chandy and Misra's UNITY formalism;
4711
75a9ef36b1fe removed pred;
wenzelm
parents: 4683
diff changeset
   971
5651
ca45d6126c8a *** empty log message ***
nipkow
parents: 5650
diff changeset
   972
* directory HOL/Hoare: a new version of Hoare logic which permits many-sorted
ca45d6126c8a *** empty log message ***
nipkow
parents: 5650
diff changeset
   973
  programs, i.e. different program variables may have different types.
ca45d6126c8a *** empty log message ***
nipkow
parents: 5650
diff changeset
   974
5142
c56aa8b59dc0 new stac
paulson
parents: 5140
diff changeset
   975
* calling (stac rew i) now fails if "rew" has no effect on the goal
c56aa8b59dc0 new stac
paulson
parents: 5140
diff changeset
   976
  [previously, this check worked only if the rewrite rule was unconditional]
5308
paulson
parents: 5282
diff changeset
   977
  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
   978
5363
0cf15843b82f isatool install;
wenzelm
parents: 5332
diff changeset
   979
4879
58656c6a3551 "let" is no longer restricted to FOL terms and allows any logical terms
paulson
parents: 4869
diff changeset
   980
*** ZF ***
58656c6a3551 "let" is no longer restricted to FOL terms and allows any logical terms
paulson
parents: 4869
diff changeset
   981
5332
paulson
parents: 5308
diff changeset
   982
* theory Main includes everything; INCOMPATIBILITY: theory ZF.thy contains
paulson
parents: 5308
diff changeset
   983
  only the theorems proved on ZF.ML;
5160
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
   984
5475
410172655d64 equals0D
paulson
parents: 5428
diff changeset
   985
* ZF INCOMPATIBILITY: rule `equals0D' is now a well-formed destruct rule;
410172655d64 equals0D
paulson
parents: 5428
diff changeset
   986
  It and 'sym RS equals0D' are now in the default  claset, giving automatic
410172655d64 equals0D
paulson
parents: 5428
diff changeset
   987
  disjointness reasoning but breaking a few old proofs.
5267
41a01176b9de disjointness
paulson
parents: 5251
diff changeset
   988
5160
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
   989
* ZF/Update: new theory of function updates
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
   990
    with default rewrite rule  f(x:=y) ` z = if(z=x, y, f`z)
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
   991
  may also be iterated as in f(a:=b,c:=d,...);
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
   992
4879
58656c6a3551 "let" is no longer restricted to FOL terms and allows any logical terms
paulson
parents: 4869
diff changeset
   993
* 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
   994
5142
c56aa8b59dc0 new stac
paulson
parents: 5140
diff changeset
   995
* calling (stac rew i) now fails if "rew" has no effect on the goal
c56aa8b59dc0 new stac
paulson
parents: 5140
diff changeset
   996
  [previously, this check worked only if the rewrite rule was unconditional]
5308
paulson
parents: 5282
diff changeset
   997
  Now rew can involve either definitions or equalities (either == or =).
5142
c56aa8b59dc0 new stac
paulson
parents: 5140
diff changeset
   998
5160
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
   999
* case_tac provided for compatibility with HOL
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
  1000
    (like the old excluded_middle_tac, but with subgoals swapped)
1ff6679144b9 ZF: Main, Update
paulson
parents: 5145
diff changeset
  1001
4842
0afcae75b34a *** empty log message ***
wenzelm
parents: 4838
diff changeset
  1002
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1003
*** Internal programming interfaces ***
5002
7b4c2a153738 * improved the theory data mechanism to support real encapsulation;
wenzelm
parents: 4981
diff changeset
  1004
5251
wenzelm
parents: 5226
diff changeset
  1005
* Pure: several new basic modules made available for general use, see
wenzelm
parents: 5226
diff changeset
  1006
also src/Pure/README;
5207
wenzelm
parents: 5160
diff changeset
  1007
5008
6f56d9650ee9 new type-safe user interface for theory data;
wenzelm
parents: 5002
diff changeset
  1008
* improved the theory data mechanism to support encapsulation (data
6f56d9650ee9 new type-safe user interface for theory data;
wenzelm
parents: 5002
diff changeset
  1009
kind name replaced by private Object.kind, acting as authorization
5373
wenzelm
parents: 5363
diff changeset
  1010
key); new type-safe user interface via functor TheoryDataFun; generic
wenzelm
parents: 5363
diff changeset
  1011
print_data function becomes basically useless;
5002
7b4c2a153738 * improved the theory data mechanism to support real encapsulation;
wenzelm
parents: 4981
diff changeset
  1012
5251
wenzelm
parents: 5226
diff changeset
  1013
* removed global_names compatibility flag -- all theory declarations
wenzelm
parents: 5226
diff changeset
  1014
are qualified by default;
wenzelm
parents: 5226
diff changeset
  1015
5085
8e5a7942fdea simplification procedure unit_eq_proc rewrites (?x::unit) = ();
wenzelm
parents: 5077
diff changeset
  1016
* module Pure/Syntax now offers quote / antiquote translation
8e5a7942fdea simplification procedure unit_eq_proc rewrites (?x::unit) = ();
wenzelm
parents: 5077
diff changeset
  1017
functions (useful for Hoare logic etc. with implicit dependencies);
5373
wenzelm
parents: 5363
diff changeset
  1018
see HOL/ex/Antiquote for an example use;
5085
8e5a7942fdea simplification procedure unit_eq_proc rewrites (?x::unit) = ();
wenzelm
parents: 5077
diff changeset
  1019
5127
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1020
* Simplifier now offers conversions (asm_)(full_)rewrite: simpset ->
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1021
cterm -> thm;
ef467e05da61 cleaned up;
wenzelm
parents: 5125
diff changeset
  1022
5207
wenzelm
parents: 5160
diff changeset
  1023
* new tactical CHANGED_GOAL for checking that a tactic modifies a
wenzelm
parents: 5160
diff changeset
  1024
subgoal;
5142
c56aa8b59dc0 new stac
paulson
parents: 5140
diff changeset
  1025
5251
wenzelm
parents: 5226
diff changeset
  1026
* Display.print_goals function moved to Locale.print_goals;
wenzelm
parents: 5226
diff changeset
  1027
5731
f84dc3b811e9 current_goals_markers;
wenzelm
parents: 5726
diff changeset
  1028
* standard print function for goals supports current_goals_markers
f84dc3b811e9 current_goals_markers;
wenzelm
parents: 5726
diff changeset
  1029
variable for marking begin of proof, end of proof, start of goal; the
f84dc3b811e9 current_goals_markers;
wenzelm
parents: 5726
diff changeset
  1030
default is ("", "", ""); setting current_goals_markers := ("<proof>",
f84dc3b811e9 current_goals_markers;
wenzelm
parents: 5726
diff changeset
  1031
"</proof>", "<goal>") causes SGML like tagged proof state printing,
f84dc3b811e9 current_goals_markers;
wenzelm
parents: 5726
diff changeset
  1032
for example;
f84dc3b811e9 current_goals_markers;
wenzelm
parents: 5726
diff changeset
  1033
5002
7b4c2a153738 * improved the theory data mechanism to support real encapsulation;
wenzelm
parents: 4981
diff changeset
  1034
7b4c2a153738 * improved the theory data mechanism to support real encapsulation;
wenzelm
parents: 4981
diff changeset
  1035
4410
wenzelm
parents: 4388
diff changeset
  1036
New in Isabelle98 (January 1998)
wenzelm
parents: 4388
diff changeset
  1037
--------------------------------
wenzelm
parents: 4388
diff changeset
  1038
wenzelm
parents: 4388
diff changeset
  1039
*** Overview of INCOMPATIBILITIES (see below for more details) ***
wenzelm
parents: 4388
diff changeset
  1040
wenzelm
parents: 4388
diff changeset
  1041
* changed lexical syntax of terms / types: dots made part of long
wenzelm
parents: 4388
diff changeset
  1042
identifiers, e.g. "%x.x" no longer possible, should be "%x. x";
wenzelm
parents: 4388
diff changeset
  1043
wenzelm
parents: 4388
diff changeset
  1044
* simpset (and claset) reference variable replaced by functions
wenzelm
parents: 4388
diff changeset
  1045
simpset / simpset_ref;
wenzelm
parents: 4388
diff changeset
  1046
wenzelm
parents: 4388
diff changeset
  1047
* no longer supports theory aliases (via merge) and non-trivial
wenzelm
parents: 4388
diff changeset
  1048
implicit merge of thms' signatures;
wenzelm
parents: 4388
diff changeset
  1049
wenzelm
parents: 4388
diff changeset
  1050
* most internal names of constants changed due to qualified names;
wenzelm
parents: 4388
diff changeset
  1051
wenzelm
parents: 4388
diff changeset
  1052
* changed Pure/Sequence interface (see Pure/seq.ML);
wenzelm
parents: 4388
diff changeset
  1053
3454
40b1287347d7 removed;
wenzelm
parents: 3338
diff changeset
  1054
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1055
*** General Changes ***
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1056
4174
wenzelm
parents: 4154
diff changeset
  1057
* hierachically structured name spaces (for consts, types, axms, thms
3943
b6e0c90f3bf4 tuned qualified names;
wenzelm
parents: 3930
diff changeset
  1058
etc.); new lexical class 'longid' (e.g. Foo.bar.x) may render much of
4108
1610602a2964 isatool fixclasimp;
wenzelm
parents: 4070
diff changeset
  1059
old input syntactically incorrect (e.g. "%x.x"); COMPATIBILITY:
1610602a2964 isatool fixclasimp;
wenzelm
parents: 4070
diff changeset
  1060
isatool fixdots ensures space after dots (e.g. "%x. x"); set
4174
wenzelm
parents: 4154
diff changeset
  1061
long_names for fully qualified output names; NOTE: ML programs
wenzelm
parents: 4154
diff changeset
  1062
(special tactics, packages etc.) referring to internal names may have
wenzelm
parents: 4154
diff changeset
  1063
to be adapted to cope with fully qualified names; in case of severe
wenzelm
parents: 4154
diff changeset
  1064
backward campatibility problems try setting 'global_names' at compile
wenzelm
parents: 4154
diff changeset
  1065
time to have enrything declared within a flat name space; one may also
wenzelm
parents: 4154
diff changeset
  1066
fine tune name declarations in theories via the 'global' and 'local'
wenzelm
parents: 4154
diff changeset
  1067
section;
4108
1610602a2964 isatool fixclasimp;
wenzelm
parents: 4070
diff changeset
  1068
1610602a2964 isatool fixclasimp;
wenzelm
parents: 4070
diff changeset
  1069
* reimplemented the implicit simpset and claset using the new anytype
1610602a2964 isatool fixclasimp;
wenzelm
parents: 4070
diff changeset
  1070
data filed in signatures; references simpset:simpset ref etc. are
1610602a2964 isatool fixclasimp;
wenzelm
parents: 4070
diff changeset
  1071
replaced by functions simpset:unit->simpset and
1610602a2964 isatool fixclasimp;
wenzelm
parents: 4070
diff changeset
  1072
simpset_ref:unit->simpset ref; COMPATIBILITY: use isatool fixclasimp
1610602a2964 isatool fixclasimp;
wenzelm
parents: 4070
diff changeset
  1073
to patch your ML files accordingly;
3856
177c64693954 rearranged and added TLA
paulson
parents: 3851
diff changeset
  1074
3857
16198fde5af5 browser info;
wenzelm
parents: 3856
diff changeset
  1075
* HTML output now includes theory graph data for display with Java
16198fde5af5 browser info;
wenzelm
parents: 3856
diff changeset
  1076
applet or isatool browser; data generated automatically via isatool
3901
wenzelm
parents: 3871
diff changeset
  1077
usedir (see -i option, ISABELLE_USEDIR_OPTIONS);
3857
16198fde5af5 browser info;
wenzelm
parents: 3856
diff changeset
  1078
3856
177c64693954 rearranged and added TLA
paulson
parents: 3851
diff changeset
  1079
* defs may now be conditional; improved rewrite_goals_tac to handle
177c64693954 rearranged and added TLA
paulson
parents: 3851
diff changeset
  1080
conditional equations;
177c64693954 rearranged and added TLA
paulson
parents: 3851
diff changeset
  1081
4174
wenzelm
parents: 4154
diff changeset
  1082
* defs now admits additional type arguments, using TYPE('a) syntax;
wenzelm
parents: 4154
diff changeset
  1083
3901
wenzelm
parents: 3871
diff changeset
  1084
* theory aliases via merge (e.g. M=A+B+C) no longer supported, always
wenzelm
parents: 3871
diff changeset
  1085
creates a new theory node; implicit merge of thms' signatures is
4112
wenzelm
parents: 4108
diff changeset
  1086
restricted to 'trivial' ones; COMPATIBILITY: one may have to use
3901
wenzelm
parents: 3871
diff changeset
  1087
transfer:theory->thm->thm in (rare) cases;
wenzelm
parents: 3871
diff changeset
  1088
3968
ec138de716d9 improved handling of draft signatures / theories; draft thms (and
wenzelm
parents: 3964
diff changeset
  1089
* improved handling of draft signatures / theories; draft thms (and
ec138de716d9 improved handling of draft signatures / theories; draft thms (and
wenzelm
parents: 3964
diff changeset
  1090
ctyps, cterms) are automatically promoted to real ones;
ec138de716d9 improved handling of draft signatures / theories; draft thms (and
wenzelm
parents: 3964
diff changeset
  1091
3901
wenzelm
parents: 3871
diff changeset
  1092
* slightly changed interfaces for oracles: admit many per theory, named
wenzelm
parents: 3871
diff changeset
  1093
(e.g. oracle foo = mlfun), additional name argument for invoke_oracle;
wenzelm
parents: 3871
diff changeset
  1094
wenzelm
parents: 3871
diff changeset
  1095
* print_goals: optional output of const types (set show_consts and
wenzelm
parents: 3871
diff changeset
  1096
show_types);
3851
fe9932a7cd46 print_goals: optional output of const types (set show_consts);
wenzelm
parents: 3846
diff changeset
  1097
4388
wenzelm
parents: 4381
diff changeset
  1098
* improved output of warnings (###) and errors (***);
3697
c5833dfcc2cc Pure: fixed idt/idts vs. pttrn/pttrns syntactic categories;
wenzelm
parents: 3671
diff changeset
  1099
4178
e64ff1c1bc70 subgoal_tac displays a warning if the new subgoal has type variables
paulson
parents: 4174
diff changeset
  1100
* 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
  1101
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1102
* removed old README and Makefiles;
3697
c5833dfcc2cc Pure: fixed idt/idts vs. pttrn/pttrns syntactic categories;
wenzelm
parents: 3671
diff changeset
  1103
3856
177c64693954 rearranged and added TLA
paulson
parents: 3851
diff changeset
  1104
* 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
  1105
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1106
* removed obsolete init_pps and init_database;
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1107
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1108
* deleted the obsolete tactical STATE, which was declared by
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1109
    fun STATE tacfun st = tacfun st st;
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1110
4388
wenzelm
parents: 4381
diff changeset
  1111
* cd and use now support path variables, e.g. $ISABELLE_HOME, or ~
wenzelm
parents: 4381
diff changeset
  1112
(which abbreviates $HOME);
4269
a045600f0c98 cd, use etc. now support path variables;
wenzelm
parents: 4207
diff changeset
  1113
a045600f0c98 cd, use etc. now support path variables;
wenzelm
parents: 4207
diff changeset
  1114
* changed Pure/Sequence interface (see Pure/seq.ML); COMPATIBILITY:
a045600f0c98 cd, use etc. now support path variables;
wenzelm
parents: 4207
diff changeset
  1115
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
  1116
qualified references to the Sequence structure only!);
a045600f0c98 cd, use etc. now support path variables;
wenzelm
parents: 4207
diff changeset
  1117
4381
wenzelm
parents: 4373
diff changeset
  1118
* use_thy no longer requires writable current directory; it always
wenzelm
parents: 4373
diff changeset
  1119
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
  1120
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1121
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1122
*** Classical Reasoner ***
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1123
3744
wenzelm
parents: 3719
diff changeset
  1124
* Clarify_tac, clarify_tac, clarify_step_tac, Clarify_step_tac: new
wenzelm
parents: 3719
diff changeset
  1125
tactics that use classical reasoning to simplify a subgoal without
wenzelm
parents: 3719
diff changeset
  1126
splitting it into several subgoals;
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1127
3719
6a142dab2a08 Safe_tac; qed_spec_mp in FOL
paulson
parents: 3715
diff changeset
  1128
* Safe_tac: like safe_tac but uses the default claset;
6a142dab2a08 Safe_tac; qed_spec_mp in FOL
paulson
parents: 3715
diff changeset
  1129
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1130
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1131
*** Simplifier ***
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1132
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1133
* added simplification meta rules:
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1134
    (asm_)(full_)simplify: simpset -> thm -> thm;
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1135
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1136
* simplifier.ML no longer part of Pure -- has to be loaded by object
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1137
logics (again);
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1138
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1139
* added prems argument to simplification procedures;
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1140
4325
e72cba5af6c5 addsplits now in FOL, ZF too
paulson
parents: 4269
diff changeset
  1141
* HOL, FOL, ZF: added infix function `addsplits':
e72cba5af6c5 addsplits now in FOL, ZF too
paulson
parents: 4269
diff changeset
  1142
  instead of `<simpset> setloop (split_tac <thms>)'
e72cba5af6c5 addsplits now in FOL, ZF too
paulson
parents: 4269
diff changeset
  1143
  you can simply write `<simpset> addsplits <thms>'
e72cba5af6c5 addsplits now in FOL, ZF too
paulson
parents: 4269
diff changeset
  1144
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1145
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1146
*** Syntax ***
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1147
4174
wenzelm
parents: 4154
diff changeset
  1148
* TYPE('a) syntax for type reflection terms;
wenzelm
parents: 4154
diff changeset
  1149
3985
wenzelm
parents: 3982
diff changeset
  1150
* no longer handles consts with name "" -- declare as 'syntax' instead;
3856
177c64693954 rearranged and added TLA
paulson
parents: 3851
diff changeset
  1151
177c64693954 rearranged and added TLA
paulson
parents: 3851
diff changeset
  1152
* pretty printer: changed order of mixfix annotation preference (again!);
3846
6061fa463784 hierachically structured name spaces;
wenzelm
parents: 3822
diff changeset
  1153
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1154
* Pure: fixed idt/idts vs. pttrn/pttrns syntactic categories;
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1155
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1156
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1157
*** HOL ***
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1158
5726
wenzelm
parents: 5722
diff changeset
  1159
* 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
  1160
  with `addloop' of the simplifier to faciliate case splitting in premises.
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1161
4035
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1162
* HOL/TLA: Stephan Merz's formalization of Lamport's Temporal Logic of Actions;
3985
wenzelm
parents: 3982
diff changeset
  1163
wenzelm
parents: 3982
diff changeset
  1164
* HOL/Auth: new protocol proofs including some for the Internet
4035
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1165
  protocol TLS;
3985
wenzelm
parents: 3982
diff changeset
  1166
4125
wenzelm
parents: 4123
diff changeset
  1167
* HOL/Map: new theory of `maps' a la VDM;
3982
2a903ba8d39e HOL/Map
nipkow
parents: 3968
diff changeset
  1168
4335
b0acd74da01d nat_cancel simprocs;
wenzelm
parents: 4325
diff changeset
  1169
* HOL/simplifier: simplification procedures nat_cancel_sums for
b0acd74da01d nat_cancel simprocs;
wenzelm
parents: 4325
diff changeset
  1170
cancelling out common nat summands from =, <, <= (in)equalities, or
b0acd74da01d nat_cancel simprocs;
wenzelm
parents: 4325
diff changeset
  1171
differences; simplification procedures nat_cancel_factor for
b0acd74da01d nat_cancel simprocs;
wenzelm
parents: 4325
diff changeset
  1172
cancelling common factor from =, <, <= (in)equalities over natural
4373
2f831a45d571 nat_cancel enabled by default;
wenzelm
parents: 4370
diff changeset
  1173
sums; nat_cancel contains both kinds of procedures, it is installed by
2f831a45d571 nat_cancel enabled by default;
wenzelm
parents: 4370
diff changeset
  1174
default in Arith.thy -- this COULD MAKE EXISTING PROOFS FAIL;
4335
b0acd74da01d nat_cancel simprocs;
wenzelm
parents: 4325
diff changeset
  1175
3580
04c6ae944b5e new simproc
nipkow
parents: 3579
diff changeset
  1176
* HOL/simplifier: terms of the form
4325
e72cba5af6c5 addsplits now in FOL, ZF too
paulson
parents: 4269
diff changeset
  1177
  `? x. P1(x) & ... & Pn(x) & x=t & Q1(x) & ... Qn(x)'  (or t=x)
3580
04c6ae944b5e new simproc
nipkow
parents: 3579
diff changeset
  1178
  are rewritten to
4035
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1179
  `P1(t) & ... & Pn(t) & Q1(t) & ... Qn(t)',
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1180
  and those of the form
4325
e72cba5af6c5 addsplits now in FOL, ZF too
paulson
parents: 4269
diff changeset
  1181
  `! 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
  1182
  are rewritten to
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1183
  `P1(t) & ... & Pn(t) & Q1(t) & ... Qn(t) --> R(t)',
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1184
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1185
* HOL/datatype
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1186
  Each datatype `t' now comes with a theorem `split_t_case' of the form
3580
04c6ae944b5e new simproc
nipkow
parents: 3579
diff changeset
  1187
4035
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1188
  P(t_case f1 ... fn x) =
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1189
     ( (!y1 ... ym1. x = C1 y1 ... ym1 --> P(f1 y1 ... ym1)) &
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1190
        ...
4189
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1191
       (!y1 ... ymn. x = Cn y1 ... ymn --> P(f1 y1 ... ymn))
4035
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1192
     )
6ffbc7b11abd *** empty log message ***
nipkow
parents: 3985
diff changeset
  1193
4930
89271bc4e7ed extended addsplits and delsplits to handle also split rules for assumptions
oheimb
parents: 4915
diff changeset
  1194
  and a theorem `split_t_case_asm' of the form
4189
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1195
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1196
  P(t_case f1 ... fn x) =
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1197
    ~( (? y1 ... ym1. x = C1 y1 ... ym1 & ~P(f1 y1 ... ym1)) |
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1198
        ...
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1199
       (? y1 ... ymn. x = Cn y1 ... ymn & ~P(f1 y1 ... ymn))
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1200
     )
4930
89271bc4e7ed extended addsplits and delsplits to handle also split rules for assumptions
oheimb
parents: 4915
diff changeset
  1201
  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
  1202
  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
  1203
  split_list_case and split_option_case.
4189
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1204
4361
c77a484e4f95 pred -> -1
nipkow
parents: 4357
diff changeset
  1205
* HOL/Arithmetic:
c77a484e4f95 pred -> -1
nipkow
parents: 4357
diff changeset
  1206
  - `pred n' is automatically converted to `n-1'.
c77a484e4f95 pred -> -1
nipkow
parents: 4357
diff changeset
  1207
    Users are strongly encouraged not to use `pred' any longer,
c77a484e4f95 pred -> -1
nipkow
parents: 4357
diff changeset
  1208
    because it will disappear altogether at some point.
c77a484e4f95 pred -> -1
nipkow
parents: 4357
diff changeset
  1209
  - Users are strongly encouraged to write "0 < n" rather than
c77a484e4f95 pred -> -1
nipkow
parents: 4357
diff changeset
  1210
    "n ~= 0". Theorems and proof tools have been modified towards this
c77a484e4f95 pred -> -1
nipkow
parents: 4357
diff changeset
  1211
    `standard'.
4357
b852e2d2a39a n ~= 0 should become 0 < n
nipkow
parents: 4335
diff changeset
  1212
4502
337c073de95e nth -> !
nipkow
parents: 4410
diff changeset
  1213
* HOL/Lists:
337c073de95e nth -> !
nipkow
parents: 4410
diff changeset
  1214
  the function "set_of_list" has been renamed "set" (and its theorems too);
337c073de95e nth -> !
nipkow
parents: 4410
diff changeset
  1215
  the function "nth" now takes its arguments in the reverse order and
337c073de95e nth -> !
nipkow
parents: 4410
diff changeset
  1216
  has acquired the infix notation "!" as in "xs!n".
3570
d3662f90c453 set_of_list -> set
paulson
parents: 3567
diff changeset
  1217
4154
17a3a2c5a35f UNIV & UNION1
paulson
parents: 4125
diff changeset
  1218
* HOL/Set: UNIV is now a constant and is no longer translated to Compl{};
17a3a2c5a35f UNIV & UNION1
paulson
parents: 4125
diff changeset
  1219
17a3a2c5a35f UNIV & UNION1
paulson
parents: 4125
diff changeset
  1220
* 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
  1221
  specialist theorems (like UN1_I) are gone.  Similarly for (INT x.B x);
17a3a2c5a35f UNIV & UNION1
paulson
parents: 4125
diff changeset
  1222
4575
e59cf7d816fe HOL/record;
wenzelm
parents: 4502
diff changeset
  1223
* HOL/record: extensible records with schematic structural subtyping
e59cf7d816fe HOL/record;
wenzelm
parents: 4502
diff changeset
  1224
(single inheritance); EXPERIMENTAL version demonstrating the encoding,
e59cf7d816fe HOL/record;
wenzelm
parents: 4502
diff changeset
  1225
still lacks various theorems and concrete record syntax;
e59cf7d816fe HOL/record;
wenzelm
parents: 4502
diff changeset
  1226
4125
wenzelm
parents: 4123
diff changeset
  1227
3715
6e074b41c735 Clarify_tac; general reorganization
paulson
parents: 3697
diff changeset
  1228
*** HOLCF ***
3535
19bd6c8274c4 defs may now be conditional;
wenzelm
parents: 3511
diff changeset
  1229
4125
wenzelm
parents: 4123
diff changeset
  1230
* removed "axioms" and "generated by" sections;
wenzelm
parents: 4123
diff changeset
  1231
4123
9600dd68d35b *** empty log message ***
oheimb
parents: 4112
diff changeset
  1232
* replaced "ops" section by extended "consts" section, which is capable of
4125
wenzelm
parents: 4123
diff changeset
  1233
  handling the continuous function space "->" directly;
wenzelm
parents: 4123
diff changeset
  1234
wenzelm
parents: 4123
diff changeset
  1235
* domain package:
wenzelm
parents: 4123
diff changeset
  1236
  . proves theorems immediately and stores them in the theory,
wenzelm
parents: 4123
diff changeset
  1237
  . creates hierachical name space,
wenzelm
parents: 4123
diff changeset
  1238
  . now uses normal mixfix annotations (instead of cinfix...),
wenzelm
parents: 4123
diff changeset
  1239
  . minor changes to some names and values (for consistency),
wenzelm
parents: 4123
diff changeset
  1240
  . e.g. cases -> casedist, dists_eq -> dist_eqs, [take_lemma] -> take_lemmas,
wenzelm
parents: 4123
diff changeset
  1241
  . separator between mutual domain defs: changed "," to "and",
wenzelm
parents: 4123
diff changeset
  1242
  . improved handling of sort constraints;  now they have to
wenzelm
parents: 4123
diff changeset
  1243
    appear on the left-hand side of the equations only;
4123
9600dd68d35b *** empty log message ***
oheimb
parents: 4112
diff changeset
  1244
9600dd68d35b *** empty log message ***
oheimb
parents: 4112
diff changeset
  1245
* fixed LAM <x,y,zs>.b syntax;
3567
e2539e1980b4 added simplification meta rules;
wenzelm
parents: 3561
diff changeset
  1246
3744
wenzelm
parents: 3719
diff changeset
  1247
* added extended adm_tac to simplifier in HOLCF -- can now discharge
wenzelm
parents: 3719
diff changeset
  1248
adm (%x. P (t x)), where P is chainfinite and t continuous;
3579
8bd9b4b3b61d *** empty log message ***
wenzelm
parents: 3570
diff changeset
  1249
8bd9b4b3b61d *** empty log message ***
wenzelm
parents: 3570
diff changeset
  1250
3719
6a142dab2a08 Safe_tac; qed_spec_mp in FOL
paulson
parents: 3715
diff changeset
  1251
*** FOL and ZF ***
6a142dab2a08 Safe_tac; qed_spec_mp in FOL
paulson
parents: 3715
diff changeset
  1252
5726
wenzelm
parents: 5722
diff changeset
  1253
* 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
  1254
  with `addloop' of the simplifier to faciliate case splitting in premises.
b8c7a6bc6c16 added split_prem_tac
oheimb
parents: 4178
diff changeset
  1255
3744
wenzelm
parents: 3719
diff changeset
  1256
* qed_spec_mp, qed_goal_spec_mp, qed_goalw_spec_mp are available, as
wenzelm
parents: 3719
diff changeset
  1257
in HOL, they strip ALL and --> from proved theorems;
wenzelm
parents: 3719
diff changeset
  1258
3719
6a142dab2a08 Safe_tac; qed_spec_mp in FOL
paulson
parents: 3715
diff changeset
  1259
3579
8bd9b4b3b61d *** empty log message ***
wenzelm
parents: 3570
diff changeset
  1260
3006
wenzelm
parents: 3002
diff changeset
  1261
New in Isabelle94-8 (May 1997)
wenzelm
parents: 3002
diff changeset
  1262
------------------------------
2654
6efa602921d1 *** empty log message ***
wenzelm
parents: 2653
diff changeset
  1263
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1264
*** General Changes ***
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1265
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1266
* 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
  1267
still somewhat experimental); old Makefiles etc. still functional;
2971
c1e1e8406fb2 *** empty log message ***
wenzelm
parents: 2927
diff changeset
  1268
3205
816a1f9fd620 *** empty log message ***
wenzelm
parents: 3116
diff changeset
  1269
* new 'Isabelle System Manual';
816a1f9fd620 *** empty log message ***
wenzelm
parents: 3116
diff changeset
  1270
2825
a94dba60d5f2 *** empty log message ***
wenzelm
parents: 2773
diff changeset
  1271
* INSTALL text, together with ./configure and ./build scripts;
2773
36fdd908a26c *** empty log message ***
wenzelm
parents: 2756
diff changeset
  1272
3006
wenzelm
parents: 3002
diff changeset
  1273
* reimplemented type inference for greater efficiency, better error
wenzelm
parents: 3002
diff changeset
  1274
messages and clean internal interface;
3002
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
* 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
  1277
setting goals_limit);
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1278
3006
wenzelm
parents: 3002
diff changeset
  1279
wenzelm
parents: 3002
diff changeset
  1280
*** Syntax ***
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1281
3116
b890bae4273e *** empty log message ***
wenzelm
parents: 3107
diff changeset
  1282
* supports alternative (named) syntax tables (parser and pretty
b890bae4273e *** empty log message ***
wenzelm
parents: 3107
diff changeset
  1283
printer); internal interface is provided by add_modesyntax(_i);
b890bae4273e *** empty log message ***
wenzelm
parents: 3107
diff changeset
  1284
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1285
* 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
  1286
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
  1287
"symbols" syntax table;
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1288
2705
d6e83a02061d *** empty log message ***
wenzelm
parents: 2654
diff changeset
  1289
* added token_translation interface (may translate name tokens in
2756
643cba384a61 *** empty log message ***
wenzelm
parents: 2747
diff changeset
  1290
arbitrary ways, dependent on their type (free, bound, tfree, ...) and
3116
b890bae4273e *** empty log message ***
wenzelm
parents: 3107
diff changeset
  1291
the current print_mode); IMPORTANT: user print translation functions
b890bae4273e *** empty log message ***
wenzelm
parents: 3107
diff changeset
  1292
are responsible for marking newly introduced bounds
b890bae4273e *** empty log message ***
wenzelm
parents: 3107
diff changeset
  1293
(Syntax.mark_boundT);
2705
d6e83a02061d *** empty log message ***
wenzelm
parents: 2654
diff changeset
  1294
2730
865995b744f5 *** empty log message ***
wenzelm
parents: 2726
diff changeset
  1295
* token translations for modes "xterm" and "xterm_color" that display
3006
wenzelm
parents: 3002
diff changeset
  1296
names in bold, underline etc. or colors (which requires a color
wenzelm
parents: 3002
diff changeset
  1297
version of xterm);
2730
865995b744f5 *** empty log message ***
wenzelm
parents: 2726
diff changeset
  1298
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1299
* 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
  1300
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1301
* added typed_print_translation (like print_translation, but may
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1302
access type of constant);
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1303
3006
wenzelm
parents: 3002
diff changeset
  1304
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1305
*** Classical Reasoner ***
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1306
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1307
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
  1308
some limitations.  Blast_tac...
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1309
  + ignores addss, addbefore, addafter; this restriction is intrinsic
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1310
  + ignores elimination rules that don't have the correct format
5726
wenzelm
parents: 5722
diff changeset
  1311
        (the conclusion MUST be a formula variable)
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1312
  + ignores types, which can make HOL proofs fail
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1313
  + 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
  1314
    [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
  1315
  + 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
  1316
3107
wenzelm
parents: 3042
diff changeset
  1317
* substitution with equality assumptions no longer permutes other
wenzelm
parents: 3042
diff changeset
  1318
assumptions;
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1319
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1320
* 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
  1321
setwrapper to setWrapper and compwrapper to compWrapper; added safe wrapper
3107
wenzelm
parents: 3042
diff changeset
  1322
(and access functions for it);
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1323
5726
wenzelm
parents: 5722
diff changeset
  1324
* improved combination of classical reasoner and simplifier:
3317
2cfb98c49c42 adapted entry for addss, addSss
oheimb
parents: 3316
diff changeset
  1325
  + functions for handling clasimpsets
2cfb98c49c42 adapted entry for addss, addSss
oheimb
parents: 3316
diff changeset
  1326
  + improvement of addss: now the simplifier is called _after_ the
2cfb98c49c42 adapted entry for addss, addSss
oheimb
parents: 3316
diff changeset
  1327
    safe steps.
2cfb98c49c42 adapted entry for addss, addSss
oheimb
parents: 3316
diff changeset
  1328
  + safe variant of addss called addSss: uses safe simplifications
5726
wenzelm
parents: 5722
diff changeset
  1329
    _during_ the safe steps. It is more complete as it allows multiple
3317
2cfb98c49c42 adapted entry for addss, addSss
oheimb
parents: 3316
diff changeset
  1330
    instantiations of unknowns (e.g. with slow_tac).
3006
wenzelm
parents: 3002
diff changeset
  1331
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1332
*** Simplifier ***
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1333
3006
wenzelm
parents: 3002
diff changeset
  1334
* added interface for simplification procedures (functions that
wenzelm
parents: 3002
diff changeset
  1335
produce *proven* rewrite rules on the fly, depending on current
wenzelm
parents: 3002
diff changeset
  1336
redex);
wenzelm
parents: 3002
diff changeset
  1337
wenzelm
parents: 3002
diff changeset
  1338
* ordering on terms as parameter (used for ordered rewriting);
wenzelm
parents: 3002
diff changeset
  1339
3107
wenzelm
parents: 3042
diff changeset
  1340
* 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
  1341
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1342
* 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
  1343
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
  1344
functions setsolver and addsolver have been renamed to setSolver and
3107
wenzelm
parents: 3042
diff changeset
  1345
addSolver; added safe_asm_full_simp_tac;
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1346
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1347
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1348
*** HOL ***
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1349
3042
21cd332b65d3 induct_tac
nipkow
parents: 3006
diff changeset
  1350
* a generic induction tactic `induct_tac' which works for all datatypes and
3107
wenzelm
parents: 3042
diff changeset
  1351
also for type `nat';
3042
21cd332b65d3 induct_tac
nipkow
parents: 3006
diff changeset
  1352
3316
nipkow
parents: 3227
diff changeset
  1353
* a generic case distinction tactic `exhaust_tac' which works for all
nipkow
parents: 3227
diff changeset
  1354
datatypes and also for type `nat';
nipkow
parents: 3227
diff changeset
  1355
nipkow
parents: 3227
diff changeset
  1356
* each datatype comes with a function `size';
nipkow
parents: 3227
diff changeset
  1357
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1358
* patterns in case expressions allow tuple patterns as arguments to
3107
wenzelm
parents: 3042
diff changeset
  1359
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
  1360
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1361
* primrec now also works with type nat;
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1362
3338
b99d750f6a37 Added recdef
paulson
parents: 3321
diff changeset
  1363
* recdef: a new declaration form, allows general recursive functions to be
b99d750f6a37 Added recdef
paulson
parents: 3321
diff changeset
  1364
defined in theory files.  See HOL/ex/Fib, HOL/ex/Primes, HOL/Subst/Unify.
b99d750f6a37 Added recdef
paulson
parents: 3321
diff changeset
  1365
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1366
* the constant for negation has been renamed from "not" to "Not" to
3107
wenzelm
parents: 3042
diff changeset
  1367
harmonize with FOL, ZF, LK, etc.;
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1368
3107
wenzelm
parents: 3042
diff changeset
  1369
* HOL/ex/LFilter theory of a corecursive "filter" functional for
wenzelm
parents: 3042
diff changeset
  1370
infinite lists;
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1371
3227
9190438471ea *** empty log message ***
wenzelm
parents: 3205
diff changeset
  1372
* HOL/Modelcheck demonstrates invocation of model checker oracle;
9190438471ea *** empty log message ***
wenzelm
parents: 3205
diff changeset
  1373
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1374
* 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
  1375
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
  1376
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1377
* more examples in HOL/MiniML and HOL/Auth;
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1378
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1379
* more default rewrite rules for quantifiers, union/intersection;
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1380
3321
c609a0119fd8 arbitrary
nipkow
parents: 3317
diff changeset
  1381
* a new constant `arbitrary == @x.False';
c609a0119fd8 arbitrary
nipkow
parents: 3317
diff changeset
  1382
3107
wenzelm
parents: 3042
diff changeset
  1383
* HOLCF/IOA replaces old HOL/IOA;
wenzelm
parents: 3042
diff changeset
  1384
5726
wenzelm
parents: 5722
diff changeset
  1385
* HOLCF changes: derived all rules and arities
wenzelm
parents: 5722
diff changeset
  1386
  + axiomatic type classes instead of classes
2653
f1a6997cdc06 described changes for HOLCF-Version without rules and arities
slotosch
parents: 2649
diff changeset
  1387
  + typedef instead of faking type definitions
2747
9fdc1461085f Tidied and updated
paulson
parents: 2732
diff changeset
  1388
  + eliminated the internal constants less_fun, less_cfun, UU_fun, UU_cfun etc.
2730
865995b744f5 *** empty log message ***
wenzelm
parents: 2726
diff changeset
  1389
  + 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
  1390
  + eliminated the types void, one, tr
f1a6997cdc06 described changes for HOLCF-Version without rules and arities
slotosch
parents: 2649
diff changeset
  1391
  + 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
  1392
  + eliminated blift from Lift3.thy (use Def instead of blift)
3107
wenzelm
parents: 3042
diff changeset
  1393
  all eliminated rules are derived as theorems --> no visible changes ;
2649
2edc5b01e5a7 improved description of recent changes
oheimb
parents: 2639
diff changeset
  1394
3006
wenzelm
parents: 3002
diff changeset
  1395
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
  1396
*** ZF ***
2553
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
  1397
2865
77daca16b2f4 ZF.thy is again usable
paulson
parents: 2825
diff changeset
  1398
* 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
  1399
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
  1400
as ZF_cs addSIs [equalityI];
2553
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
  1401
2554
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1402
2732
84fc9c3b6bf0 *** empty log message ***
wenzelm
parents: 2731
diff changeset
  1403
2553
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
  1404
New in Isabelle94-7 (November 96)
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
  1405
---------------------------------
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
  1406
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
  1407
* allowing negative levels (as offsets) in prlev and choplev;
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
  1408
2554
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1409
* super-linear speedup for large simplifications;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1410
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1411
* FOL, ZF and HOL now use miniscoping: rewriting pushes
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1412
quantifications in as far as possible (COULD MAKE EXISTING PROOFS
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1413
FAIL); can suppress it using the command Delsimps (ex_simps @
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1414
all_simps); De Morgan laws are also now included, by default;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1415
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1416
* improved printing of ==>  :  ~:
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1417
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1418
* new object-logic "Sequents" adds linear logic, while replacing LK
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1419
and Modal (thanks to Sara Kalvala);
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1420
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1421
* HOL/Auth: correctness proofs for authentication protocols;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1422
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1423
* HOL: new auto_tac combines rewriting and classical reasoning (many
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1424
examples on HOL/Auth);
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1425
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1426
* HOL: new command AddIffs for declaring theorems of the form P=Q to
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1427
the rewriter and classical reasoner simultaneously;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1428
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1429
* function uresult no longer returns theorems in "standard" format;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1430
regain previous version by: val uresult = standard o uresult;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1431
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1432
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1433
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1434
New in Isabelle94-6
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1435
-------------------
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1436
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1437
* oracles -- these establish an interface between Isabelle and trusted
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1438
external reasoners, which may deliver results as theorems;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1439
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1440
* proof objects (in particular record all uses of oracles);
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1441
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1442
* Simp_tac, Fast_tac, etc. that refer to implicit simpset / claset;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1443
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1444
* "constdefs" section in theory files;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1445
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1446
* "primrec" section (HOL) no longer requires names;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1447
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1448
* internal type "tactic" now simply "thm -> thm Sequence.seq";
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1449
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1450
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1451
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1452
New in Isabelle94-5
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1453
-------------------
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1454
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1455
* reduced space requirements;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1456
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1457
* automatic HTML generation from theories;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1458
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1459
* theory files no longer require "..." (quotes) around most types;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1460
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1461
* new examples, including two proofs of the Church-Rosser theorem;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1462
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1463
* non-curried (1994) version of HOL is no longer distributed;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
  1464
2553
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
  1465
2557
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1466
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1467
New in Isabelle94-4
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1468
-------------------
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1469
2747
9fdc1461085f Tidied and updated
paulson
parents: 2732
diff changeset
  1470
* greatly reduced space requirements;
2557
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1471
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1472
* theory files (.thy) no longer require \...\ escapes at line breaks;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1473
5726
wenzelm
parents: 5722
diff changeset
  1474
* searchable theorem database (see the section "Retrieving theorems" on
2557
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1475
page 8 of the Reference Manual);
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1476
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1477
* new examples, including Grabczewski's monumental case study of the
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1478
Axiom of Choice;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1479
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1480
* The previous version of HOL renamed to Old_HOL;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1481
5726
wenzelm
parents: 5722
diff changeset
  1482
* The new version of HOL (previously called CHOL) uses a curried syntax
2557
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1483
for functions.  Application looks like f a b instead of f(a,b);
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1484
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1485
* Mutually recursive inductive definitions finally work in HOL;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1486
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1487
* In ZF, pattern-matching on tuples is now available in all abstractions and
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1488
translates to the operator "split";
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1489
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1490
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1491
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1492
New in Isabelle94-3
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1493
-------------------
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1494
5726
wenzelm
parents: 5722
diff changeset
  1495
* new infix operator, addss, allowing the classical reasoner to
2557
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1496
perform simplification at each step of its search.  Example:
5726
wenzelm
parents: 5722
diff changeset
  1497
        fast_tac (cs addss ss)
2557
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1498
5726
wenzelm
parents: 5722
diff changeset
  1499
* a new logic, CHOL, the same as HOL, but with a curried syntax
wenzelm
parents: 5722
diff changeset
  1500
for functions.  Application looks like f a b instead of f(a,b).  Also pairs
2557
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1501
look like (a,b) instead of <a,b>;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1502
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1503
* PLEASE NOTE: CHOL will eventually replace HOL!
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1504
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1505
* In CHOL, pattern-matching on tuples is now available in all abstractions.
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1506
It translates to the operator "split".  A new theory of integers is available;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1507
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1508
* In ZF, integer numerals now denote two's-complement binary integers.
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1509
Arithmetic operations can be performed by rewriting.  See ZF/ex/Bin.ML;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1510
5726
wenzelm
parents: 5722
diff changeset
  1511
* Many new examples: I/O automata, Church-Rosser theorem, equivalents
2557
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1512
of the Axiom of Choice;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1513
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1514
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1515
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1516
New in Isabelle94-2
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1517
-------------------
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1518
5726
wenzelm
parents: 5722
diff changeset
  1519
* Significantly faster resolution;
2557
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1520
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1521
* the different sections in a .thy file can now be mixed and repeated
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1522
freely;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1523
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1524
* Database of theorems for FOL, HOL and ZF.  New
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1525
commands including qed, qed_goal and bind_thm store theorems in the database.
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1526
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1527
* Simple database queries: return a named theorem (get_thm) or all theorems of
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1528
a given theory (thms_of), or find out what theory a theorem was proved in
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1529
(theory_of_thm);
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1530
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1531
* Bugs fixed in the inductive definition and datatype packages;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1532
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1533
* The classical reasoner provides deepen_tac and depth_tac, making FOL_dup_cs
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1534
and HOL_dup_cs obsolete;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1535
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1536
* Syntactic ambiguities caused by the new treatment of syntax in Isabelle94-1
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1537
have been removed;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1538
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1539
* Simpler definition of function space in ZF;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1540
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1541
* new results about cardinal and ordinal arithmetic in ZF;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1542
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1543
* 'subtype' facility in HOL for introducing new types as subsets of existing
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1544
types;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1545
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
  1546
2553
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
  1547
$Id$