NEWS
author wenzelm
Thu, 11 Sep 1997 16:20:56 +0200
changeset 3670 9fea3562f8c7
parent 3658 f87dd7b68d8c
child 3671 8326f03d667c
permissions -rw-r--r--
replaced print_goals_ref hook by print_current_goals_fn and result_error_fn;
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
2553
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
     1
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
     2
Isabelle NEWS -- history of user-visible changes
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
     3
================================================
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
     4
3454
40b1287347d7 removed;
wenzelm
parents: 3338
diff changeset
     5
New in Isabelle???? (DATE ????)
40b1287347d7 removed;
wenzelm
parents: 3338
diff changeset
     6
-------------------------------
40b1287347d7 removed;
wenzelm
parents: 3338
diff changeset
     7
3670
9fea3562f8c7 replaced print_goals_ref hook by print_current_goals_fn and
wenzelm
parents: 3658
diff changeset
     8
* replaced print_goals_ref hook by print_current_goals_fn and
9fea3562f8c7 replaced print_goals_ref hook by print_current_goals_fn and
wenzelm
parents: 3658
diff changeset
     9
  result_error_fn;
9fea3562f8c7 replaced print_goals_ref hook by print_current_goals_fn and
wenzelm
parents: 3658
diff changeset
    10
3580
04c6ae944b5e new simproc
nipkow
parents: 3579
diff changeset
    11
* HOL/simplifier: terms of the form
04c6ae944b5e new simproc
nipkow
parents: 3579
diff changeset
    12
  `? x. P1(x) & ... & Pn(x) & x=t & Q1(x) & ... Qn(x)' (or t=x)
04c6ae944b5e new simproc
nipkow
parents: 3579
diff changeset
    13
  are rewritten to
04c6ae944b5e new simproc
nipkow
parents: 3579
diff changeset
    14
  `P1(t) & ... & Pn(t) & Q1(t) & ... Qn(t)'
04c6ae944b5e new simproc
nipkow
parents: 3579
diff changeset
    15
3658
f87dd7b68d8c set_of_list
paulson
parents: 3580
diff changeset
    16
* HOL/Lists: the function "set_of_list" has been renamed "set" (and its 
3670
9fea3562f8c7 replaced print_goals_ref hook by print_current_goals_fn and
wenzelm
parents: 3658
diff changeset
    17
  theorems too);
3570
d3662f90c453 set_of_list -> set
paulson
parents: 3567
diff changeset
    18
3454
40b1287347d7 removed;
wenzelm
parents: 3338
diff changeset
    19
* removed old README and Makefiles;
40b1287347d7 removed;
wenzelm
parents: 3338
diff changeset
    20
3511
da4dd8b7ced4 removed obsolete init_pps and init_thy_reader;
wenzelm
parents: 3454
diff changeset
    21
* removed obsolete init_pps and init_database;
da4dd8b7ced4 removed obsolete init_pps and init_thy_reader;
wenzelm
parents: 3454
diff changeset
    22
3579
8bd9b4b3b61d *** empty log message ***
wenzelm
parents: 3570
diff changeset
    23
* defs may now be conditional; improved rewrite_goals_tac to handle
8bd9b4b3b61d *** empty log message ***
wenzelm
parents: 3570
diff changeset
    24
conditional equations;
3535
19bd6c8274c4 defs may now be conditional;
wenzelm
parents: 3511
diff changeset
    25
19bd6c8274c4 defs may now be conditional;
wenzelm
parents: 3511
diff changeset
    26
* improved output of warnings / errors;
19bd6c8274c4 defs may now be conditional;
wenzelm
parents: 3511
diff changeset
    27
3579
8bd9b4b3b61d *** empty log message ***
wenzelm
parents: 3570
diff changeset
    28
* deleted the obsolete tactical STATE, which was declared by:
3567
e2539e1980b4 added simplification meta rules;
wenzelm
parents: 3561
diff changeset
    29
    fun STATE tacfun st = tacfun st st;
e2539e1980b4 added simplification meta rules;
wenzelm
parents: 3561
diff changeset
    30
3579
8bd9b4b3b61d *** empty log message ***
wenzelm
parents: 3570
diff changeset
    31
* added simplification meta rules:
3567
e2539e1980b4 added simplification meta rules;
wenzelm
parents: 3561
diff changeset
    32
    (asm_)(full_)simplify: simpset -> thm -> thm;
3561
329441e7eeee Removal of tactical STATE
paulson
parents: 3535
diff changeset
    33
3579
8bd9b4b3b61d *** empty log message ***
wenzelm
parents: 3570
diff changeset
    34
* simplifier.ML no longer part of Pure -- has to be loaded by object
8bd9b4b3b61d *** empty log message ***
wenzelm
parents: 3570
diff changeset
    35
logics (again);
8bd9b4b3b61d *** empty log message ***
wenzelm
parents: 3570
diff changeset
    36
8bd9b4b3b61d *** empty log message ***
wenzelm
parents: 3570
diff changeset
    37
* added prems argument to simplification procedures;
8bd9b4b3b61d *** empty log message ***
wenzelm
parents: 3570
diff changeset
    38
8bd9b4b3b61d *** empty log message ***
wenzelm
parents: 3570
diff changeset
    39
8bd9b4b3b61d *** empty log message ***
wenzelm
parents: 3570
diff changeset
    40
3006
wenzelm
parents: 3002
diff changeset
    41
New in Isabelle94-8 (May 1997)
wenzelm
parents: 3002
diff changeset
    42
------------------------------
2654
6efa602921d1 *** empty log message ***
wenzelm
parents: 2653
diff changeset
    43
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
    44
*** General Changes ***
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
    45
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
    46
* 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
    47
still somewhat experimental); old Makefiles etc. still functional;
2971
c1e1e8406fb2 *** empty log message ***
wenzelm
parents: 2927
diff changeset
    48
3205
816a1f9fd620 *** empty log message ***
wenzelm
parents: 3116
diff changeset
    49
* new 'Isabelle System Manual';
816a1f9fd620 *** empty log message ***
wenzelm
parents: 3116
diff changeset
    50
2825
a94dba60d5f2 *** empty log message ***
wenzelm
parents: 2773
diff changeset
    51
* INSTALL text, together with ./configure and ./build scripts;
2773
36fdd908a26c *** empty log message ***
wenzelm
parents: 2756
diff changeset
    52
3006
wenzelm
parents: 3002
diff changeset
    53
* reimplemented type inference for greater efficiency, better error
wenzelm
parents: 3002
diff changeset
    54
messages and clean internal interface;
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
    55
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
    56
* 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
    57
setting goals_limit);
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
    58
3006
wenzelm
parents: 3002
diff changeset
    59
wenzelm
parents: 3002
diff changeset
    60
*** Syntax ***
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
    61
3116
b890bae4273e *** empty log message ***
wenzelm
parents: 3107
diff changeset
    62
* supports alternative (named) syntax tables (parser and pretty
b890bae4273e *** empty log message ***
wenzelm
parents: 3107
diff changeset
    63
printer); internal interface is provided by add_modesyntax(_i);
b890bae4273e *** empty log message ***
wenzelm
parents: 3107
diff changeset
    64
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
    65
* 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
    66
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
    67
"symbols" syntax table;
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
    68
2705
d6e83a02061d *** empty log message ***
wenzelm
parents: 2654
diff changeset
    69
* added token_translation interface (may translate name tokens in
2756
643cba384a61 *** empty log message ***
wenzelm
parents: 2747
diff changeset
    70
arbitrary ways, dependent on their type (free, bound, tfree, ...) and
3116
b890bae4273e *** empty log message ***
wenzelm
parents: 3107
diff changeset
    71
the current print_mode); IMPORTANT: user print translation functions
b890bae4273e *** empty log message ***
wenzelm
parents: 3107
diff changeset
    72
are responsible for marking newly introduced bounds
b890bae4273e *** empty log message ***
wenzelm
parents: 3107
diff changeset
    73
(Syntax.mark_boundT);
2705
d6e83a02061d *** empty log message ***
wenzelm
parents: 2654
diff changeset
    74
2730
865995b744f5 *** empty log message ***
wenzelm
parents: 2726
diff changeset
    75
* token translations for modes "xterm" and "xterm_color" that display
3006
wenzelm
parents: 3002
diff changeset
    76
names in bold, underline etc. or colors (which requires a color
wenzelm
parents: 3002
diff changeset
    77
version of xterm);
2730
865995b744f5 *** empty log message ***
wenzelm
parents: 2726
diff changeset
    78
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
    79
* 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
    80
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
    81
* added typed_print_translation (like print_translation, but may
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
    82
access type of constant);
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
    83
3006
wenzelm
parents: 3002
diff changeset
    84
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
    85
*** Classical Reasoner ***
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
    86
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
    87
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
    88
some limitations.  Blast_tac...
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
    89
  + ignores addss, addbefore, addafter; this restriction is intrinsic
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
    90
  + ignores elimination rules that don't have the correct format
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
    91
	(the conclusion MUST be a formula variable)
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
    92
  + ignores types, which can make HOL proofs fail
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
    93
  + 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
    94
    [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
    95
  + 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
    96
3107
wenzelm
parents: 3042
diff changeset
    97
* substitution with equality assumptions no longer permutes other
wenzelm
parents: 3042
diff changeset
    98
assumptions;
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
    99
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
   100
* 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
   101
setwrapper to setWrapper and compwrapper to compWrapper; added safe wrapper
3107
wenzelm
parents: 3042
diff changeset
   102
(and access functions for it);
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
   103
3317
2cfb98c49c42 adapted entry for addss, addSss
oheimb
parents: 3316
diff changeset
   104
* improved combination of classical reasoner and simplifier: 
2cfb98c49c42 adapted entry for addss, addSss
oheimb
parents: 3316
diff changeset
   105
  + functions for handling clasimpsets
2cfb98c49c42 adapted entry for addss, addSss
oheimb
parents: 3316
diff changeset
   106
  + improvement of addss: now the simplifier is called _after_ the
2cfb98c49c42 adapted entry for addss, addSss
oheimb
parents: 3316
diff changeset
   107
    safe steps.
2cfb98c49c42 adapted entry for addss, addSss
oheimb
parents: 3316
diff changeset
   108
  + safe variant of addss called addSss: uses safe simplifications
2cfb98c49c42 adapted entry for addss, addSss
oheimb
parents: 3316
diff changeset
   109
    _during_ the safe steps. It is more complete as it allows multiple 
2cfb98c49c42 adapted entry for addss, addSss
oheimb
parents: 3316
diff changeset
   110
    instantiations of unknowns (e.g. with slow_tac).
3006
wenzelm
parents: 3002
diff changeset
   111
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
   112
*** Simplifier ***
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
   113
3006
wenzelm
parents: 3002
diff changeset
   114
* added interface for simplification procedures (functions that
wenzelm
parents: 3002
diff changeset
   115
produce *proven* rewrite rules on the fly, depending on current
wenzelm
parents: 3002
diff changeset
   116
redex);
wenzelm
parents: 3002
diff changeset
   117
wenzelm
parents: 3002
diff changeset
   118
* ordering on terms as parameter (used for ordered rewriting);
wenzelm
parents: 3002
diff changeset
   119
3107
wenzelm
parents: 3042
diff changeset
   120
* 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
   121
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
   122
* 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
   123
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
   124
functions setsolver and addsolver have been renamed to setSolver and
3107
wenzelm
parents: 3042
diff changeset
   125
addSolver; added safe_asm_full_simp_tac;
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
   126
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
   127
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
   128
*** HOL ***
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
   129
3042
21cd332b65d3 induct_tac
nipkow
parents: 3006
diff changeset
   130
* a generic induction tactic `induct_tac' which works for all datatypes and
3107
wenzelm
parents: 3042
diff changeset
   131
also for type `nat';
3042
21cd332b65d3 induct_tac
nipkow
parents: 3006
diff changeset
   132
3316
nipkow
parents: 3227
diff changeset
   133
* a generic case distinction tactic `exhaust_tac' which works for all
nipkow
parents: 3227
diff changeset
   134
datatypes and also for type `nat';
nipkow
parents: 3227
diff changeset
   135
nipkow
parents: 3227
diff changeset
   136
* each datatype comes with a function `size';
nipkow
parents: 3227
diff changeset
   137
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
   138
* patterns in case expressions allow tuple patterns as arguments to
3107
wenzelm
parents: 3042
diff changeset
   139
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
   140
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
   141
* primrec now also works with type nat;
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
   142
3338
b99d750f6a37 Added recdef
paulson
parents: 3321
diff changeset
   143
* recdef: a new declaration form, allows general recursive functions to be
b99d750f6a37 Added recdef
paulson
parents: 3321
diff changeset
   144
defined in theory files.  See HOL/ex/Fib, HOL/ex/Primes, HOL/Subst/Unify.
b99d750f6a37 Added recdef
paulson
parents: 3321
diff changeset
   145
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
   146
* the constant for negation has been renamed from "not" to "Not" to
3107
wenzelm
parents: 3042
diff changeset
   147
harmonize with FOL, ZF, LK, etc.;
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
   148
3107
wenzelm
parents: 3042
diff changeset
   149
* HOL/ex/LFilter theory of a corecursive "filter" functional for
wenzelm
parents: 3042
diff changeset
   150
infinite lists;
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
   151
3227
9190438471ea *** empty log message ***
wenzelm
parents: 3205
diff changeset
   152
* HOL/Modelcheck demonstrates invocation of model checker oracle;
9190438471ea *** empty log message ***
wenzelm
parents: 3205
diff changeset
   153
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
   154
* 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
   155
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
   156
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
   157
* more examples in HOL/MiniML and HOL/Auth;
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
   158
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
   159
* more default rewrite rules for quantifiers, union/intersection;
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
   160
3321
c609a0119fd8 arbitrary
nipkow
parents: 3317
diff changeset
   161
* a new constant `arbitrary == @x.False';
c609a0119fd8 arbitrary
nipkow
parents: 3317
diff changeset
   162
3107
wenzelm
parents: 3042
diff changeset
   163
* HOLCF/IOA replaces old HOL/IOA;
wenzelm
parents: 3042
diff changeset
   164
2653
f1a6997cdc06 described changes for HOLCF-Version without rules and arities
slotosch
parents: 2649
diff changeset
   165
* HOLCF changes: derived all rules and arities 
f1a6997cdc06 described changes for HOLCF-Version without rules and arities
slotosch
parents: 2649
diff changeset
   166
  + axiomatic type classes instead of classes 
f1a6997cdc06 described changes for HOLCF-Version without rules and arities
slotosch
parents: 2649
diff changeset
   167
  + typedef instead of faking type definitions
2747
9fdc1461085f Tidied and updated
paulson
parents: 2732
diff changeset
   168
  + eliminated the internal constants less_fun, less_cfun, UU_fun, UU_cfun etc.
2730
865995b744f5 *** empty log message ***
wenzelm
parents: 2726
diff changeset
   169
  + 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
   170
  + eliminated the types void, one, tr
f1a6997cdc06 described changes for HOLCF-Version without rules and arities
slotosch
parents: 2649
diff changeset
   171
  + 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
   172
  + eliminated blift from Lift3.thy (use Def instead of blift)
3107
wenzelm
parents: 3042
diff changeset
   173
  all eliminated rules are derived as theorems --> no visible changes ;
2649
2edc5b01e5a7 improved description of recent changes
oheimb
parents: 2639
diff changeset
   174
3006
wenzelm
parents: 3002
diff changeset
   175
3002
223e5d65faaa Reorganized under headings. Also documented Blast_tac and LFilter
paulson
parents: 2993
diff changeset
   176
*** ZF ***
2553
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
   177
2865
77daca16b2f4 ZF.thy is again usable
paulson
parents: 2825
diff changeset
   178
* 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
   179
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
   180
as ZF_cs addSIs [equalityI];
2553
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
   181
2554
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   182
2732
84fc9c3b6bf0 *** empty log message ***
wenzelm
parents: 2731
diff changeset
   183
2553
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
   184
New in Isabelle94-7 (November 96)
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
   185
---------------------------------
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
   186
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
   187
* allowing negative levels (as offsets) in prlev and choplev;
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
   188
2554
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   189
* super-linear speedup for large simplifications;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   190
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   191
* FOL, ZF and HOL now use miniscoping: rewriting pushes
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   192
quantifications in as far as possible (COULD MAKE EXISTING PROOFS
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   193
FAIL); can suppress it using the command Delsimps (ex_simps @
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   194
all_simps); De Morgan laws are also now included, by default;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   195
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   196
* improved printing of ==>  :  ~:
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   197
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   198
* new object-logic "Sequents" adds linear logic, while replacing LK
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   199
and Modal (thanks to Sara Kalvala);
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   200
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   201
* HOL/Auth: correctness proofs for authentication protocols;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   202
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   203
* HOL: new auto_tac combines rewriting and classical reasoning (many
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   204
examples on HOL/Auth);
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   205
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   206
* HOL: new command AddIffs for declaring theorems of the form P=Q to
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   207
the rewriter and classical reasoner simultaneously;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   208
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   209
* function uresult no longer returns theorems in "standard" format;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   210
regain previous version by: val uresult = standard o uresult;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   211
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   212
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   213
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   214
New in Isabelle94-6
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   215
-------------------
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   216
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   217
* oracles -- these establish an interface between Isabelle and trusted
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   218
external reasoners, which may deliver results as theorems;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   219
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   220
* proof objects (in particular record all uses of oracles);
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   221
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   222
* Simp_tac, Fast_tac, etc. that refer to implicit simpset / claset;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   223
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   224
* "constdefs" section in theory files;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   225
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   226
* "primrec" section (HOL) no longer requires names;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   227
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   228
* internal type "tactic" now simply "thm -> thm Sequence.seq";
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   229
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   230
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   231
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   232
New in Isabelle94-5
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   233
-------------------
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   234
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   235
* reduced space requirements;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   236
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   237
* automatic HTML generation from theories;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   238
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   239
* theory files no longer require "..." (quotes) around most types;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   240
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   241
* new examples, including two proofs of the Church-Rosser theorem;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   242
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   243
* non-curried (1994) version of HOL is no longer distributed;
1b160cd50130 *** empty log message ***
wenzelm
parents: 2553
diff changeset
   244
2553
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
   245
2557
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   246
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   247
New in Isabelle94-4
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   248
-------------------
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   249
2747
9fdc1461085f Tidied and updated
paulson
parents: 2732
diff changeset
   250
* greatly reduced space requirements;
2557
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   251
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   252
* theory files (.thy) no longer require \...\ escapes at line breaks;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   253
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   254
* searchable theorem database (see the section "Retrieving theorems" on 
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   255
page 8 of the Reference Manual);
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   256
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   257
* new examples, including Grabczewski's monumental case study of the
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   258
Axiom of Choice;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   259
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   260
* The previous version of HOL renamed to Old_HOL;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   261
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   262
* The new version of HOL (previously called CHOL) uses a curried syntax 
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   263
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
   264
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   265
* Mutually recursive inductive definitions finally work in HOL;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   266
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   267
* 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
   268
translates to the operator "split";
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   269
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   270
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   271
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   272
New in Isabelle94-3
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   273
-------------------
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   274
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   275
* new infix operator, addss, allowing the classical reasoner to 
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   276
perform simplification at each step of its search.  Example:
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   277
	fast_tac (cs addss ss)
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   278
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   279
* a new logic, CHOL, the same as HOL, but with a curried syntax 
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   280
for functions.  Application looks like f a b instead of f(a,b).  Also pairs 
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   281
look like (a,b) instead of <a,b>;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   282
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   283
* PLEASE NOTE: CHOL will eventually replace HOL!
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   284
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   285
* 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
   286
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
   287
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   288
* In ZF, integer numerals now denote two's-complement binary integers.
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   289
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
   290
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   291
* Many new examples: I/O automata, Church-Rosser theorem, equivalents 
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   292
of the Axiom of Choice;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   293
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   294
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   295
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   296
New in Isabelle94-2
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   297
-------------------
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   298
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   299
* Significantly faster resolution;  
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   300
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   301
* 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
   302
freely;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   303
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   304
* Database of theorems for FOL, HOL and ZF.  New
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   305
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
   306
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   307
* 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
   308
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
   309
(theory_of_thm);
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   310
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   311
* Bugs fixed in the inductive definition and datatype packages;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   312
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   313
* 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
   314
and HOL_dup_cs obsolete;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   315
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   316
* 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
   317
have been removed;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   318
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   319
* Simpler definition of function space in ZF;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   320
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   321
* new results about cardinal and ordinal arithmetic in ZF;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   322
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   323
* '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
   324
types;
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   325
dffebc6ab0a1 More news items, dating back to 1995
paulson
parents: 2556
diff changeset
   326
2553
ed941505cab7 Isabelle NEWS -- history of user-visible changes;
wenzelm
parents:
diff changeset
   327
$Id$