author  wenzelm 
Sun, 30 Nov 2008 14:43:29 +0100  
changeset 28917  20f43e0e0958 
parent 28915  0642cbb60c98 
child 28952  15a4b2cf8c34 
permissions  rwrr 
5363  1 
Isabelle NEWS  history userrelevant changes 
2 
============================================== 

2553  3 

27122  4 
New in this Isabelle version 
5 
 

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6 

27599  7 
*** General *** 
8 

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9 
* Simplified main Isabelle executables, with less surprises on 
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10 
caseinsensitive filesystems (such as Mac OS). 
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11 

7ad7d7d6df47
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12 
 The main Isabelle tool wrapper is now called "isabelle" instead of 
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13 
"isatool." 
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14 

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15 
 The former "isabelle" alias for "isabelleprocess" has been 
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16 
removed (should rarely occur to regular users). 
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17 

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18 
 The former "isabelleinterface" and its alias "Isabelle" have been 
0642cbb60c98
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19 
removed (interfaces are now regular Isabelle tools). 
28504
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20 

7ad7d7d6df47
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21 
Within scripts and make files, the Isabelle environment variables 
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22 
ISABELLE_TOOL and ISABELLE_PROCESS replace old ISATOOL and ISABELLE, 
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23 
respectively. (The latter are still available as legacy feature.) 
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24 

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25 
The old isabelleinterface wrapper could react in confusing ways if 
0642cbb60c98
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26 
the interface was uninstalled or changed otherwise. Individual 
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removed obsolete isabelleinterface executable and ISABELLE_INTERFACE setting;
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27 
interface tool configuration is now more explicit, see also the 
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28 
Isabelle system manual. In particular, Proof General is now available 
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29 
via "isabelle emacs". 
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30 

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31 
INCOMPATIBILITY, need to adapt derivative scripts. Users may need to 
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32 
purge installed copies of Isabelle executables and rerun "isabelle 
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33 
install p ...", or use symlinks. 
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34 

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35 
* The default for ISABELLE_HOME_USER is now ~/.isabelle instead of the 
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36 
old ~/isabelle, which was slightly nonstandard and apt cause 
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37 
surprises on caseinsensitive filesystems. 
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38 

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39 
INCOMPATIBILITY, need to move existing ~/isabelle/etc, 
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40 
~/isabelle/heaps, ~/isabelle/browser_info to the new place. Special 
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41 
care is required when using older releases of Isabelle. Note that 
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42 
ISABELLE_HOME_USER can be changed in Isabelle/etc/settings of any 
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43 
Isabelle distribution. 
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44 

28252  45 
* The Isabelle System Manual (system) has been updated, with formally 
46 
checked references as hyperlinks. 

47 

27599  48 
* Generalized Isar history, with support for linear undo, direct state 
49 
addressing etc. 

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50 

27191  51 
* Recovered hiding of consts, which was accidentally broken in 
52 
Isabelle2007. Potential INCOMPATIBILITY, ``hide const c'' really 

53 
makes c inaccessible; consider using ``hide (open) const c'' instead. 

54 

27599  55 
* Removed exotic 'token_translation' command. INCOMPATIBILITY, use ML 
56 
interface instead. 

57 

58 

59 
*** Pure *** 

60 

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61 
* Slightly more coherent Pure syntax, with updated documentation in 
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62 
isarref manual. Removed locales meta_term_syntax and 
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63 
meta_conjunction_syntax: TERM and &&& (formerly &&) are now permanent, 
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64 
INCOMPATIBILITY in rare situations. 
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65 

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66 
* Goaldirected proof now enforces strict proof irrelevance wrt. sort 
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67 
hypotheses. Sorts required in the course of reasoning need to be 
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68 
covered by the constraints in the initial statement, completed by the 
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69 
type instance information of the background theory. Nontrivial sort 
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70 
hypotheses, which rarely occur in practice, may be specified via 
28633  71 
vacuous propositions of the form SORT_CONSTRAINT('a::c). For example: 
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72 

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73 
lemma assumes "SORT_CONSTRAINT('a::empty)" shows False ... 
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74 

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75 
The result contains an implicit sort hypotheses as before  
28631  76 
SORT_CONSTRAINT premises are eliminated as part of the canonical rule 
77 
normalization. 

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78 

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* Changed defaults for unify configuration options;
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79 
* Changed defaults for unify configuration options: 
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* Changed defaults for unify configuration options;
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80 

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81 
unify_trace_bound = 50 (formerly 25) 
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82 
unify_search_bound = 60 (formerly 30) 
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83 

28143  84 
* Different bookkeeping for code equations: 
85 
a) On theory merge, the last set of code equations for a particular constant 

86 
is taken (in accordance with the policy applied by other parts of the 

87 
code generator framework). 

88 
b) Code equations stemming from explicit declarations (e.g. code attribute) 

89 
gain priority over default code equations stemming from definition, primrec, 

90 
fun etc. 

91 
INCOMPATIBILITY. 

92 

28058  93 
* Global versions of theorems stemming from classes do not carry 
94 
a parameter prefix any longer. INCOMPATIBILITY. 

95 

28710  96 
* Dropped locale element "includes". This is a major INCOMPATIBILITY. 
97 
In existing theorem specifications replace the includes element by the 

98 
respective context elements of the included locale, omitting those that 

99 
are already present in the theorem specification. Multiple assume 

100 
elements of a locale should be replaced by a single one involving the 

101 
locale predicate. In the proof body, declarations (most notably 

102 
theorems) may be regained by interpreting the respective locales in the 

103 
proof context as required (command "interpret"). 

104 
If using "includes" in replacement of a target solely because the 

105 
parameter types in the theorem are not as general as in the target, 

106 
consider declaring a new locale with additional type constraints on the 

107 
parameters (context element "constrains"). 

108 

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* Dropped "locale (open)". INCOMPATBILITY. 
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Interpretation command (theory/proof context) no longer simplifies goal.
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110 

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* Interpretation commands no longer attempt to simplify goal. 
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INCOMPATIBILITY: in rare situations the generated goal differs. Use 
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113 
methods intro_locales and unfold_locales to clarify. 
27681  114 

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115 
* Interpretation commands no longer accept interpretation attributes. 
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116 
INCOMPATBILITY. 
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117 

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* Command 'instance': attached definitions no longer accepted. 
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119 
INCOMPATIBILITY, use proper 'instantiation' target. 
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120 

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* Keyword 'code_exception' now named 'code_abort'. INCOMPATIBILITY. 
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122 

28114  123 
* The 'axiomatization' command now only works within a global theory 
124 
context. INCOMPATIBILITY. 

125 

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126 

27381  127 
*** Document preparation *** 
128 

129 
* Antiquotation @{lemma} now imitates a regular terminal proof, 

27392  130 
demanding keyword 'by' and supporting the full method expression 
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131 
syntax just like the Isar command 'by'. 
27381  132 

133 

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*** HOL *** 
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135 

28741  136 
* If methods "eval" and "evaluation" encounter a structured proof state 
137 
with !!/==>, only the conclusion is evaluated to True (if possible), 

138 
avoiding strange error messages. 

139 

140 
* Simplifier: simproc for let expressions now unfolds if bound variable 

141 
occurs at most one time in let expression body. INCOMPATIBILITY. 

142 

28685  143 
* New classes "top" and "bot" with corresponding operations "top" and "bot" 
144 
in theory Orderings; instantiation of class "complete_lattice" requires 

145 
instantiation of classes "top" and "bot". INCOMPATIBILITY. 

146 

147 
* Changed definition lemma "less_fun_def" in order to provide an instance 

148 
for preorders on functions; use lemma "less_le" instead. INCOMPATIBILITY. 

149 

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* Unified theorem tables for both code code generators. Thus 
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[code func] has disappeared and only [code] remains. INCOMPATIBILITY. 
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152 

28685  153 
* Constants "undefined" and "default" replace "arbitrary". Usually 
154 
"undefined" is the right choice to replace "arbitrary", though logically 

155 
there is no difference. INCOMPATIBILITY. 

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156 

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* Generic ATP manager for Sledgehammer, based on ML threads instead of 
28605  158 
Posix processes. Avoids potentially expensive forking of the ML 
159 
process. New threadbased implementation also works on nonUnix 

160 
platforms (Cygwin). Provers are no longer hardwired, but defined 

28606  161 
within the theory via plain ML wrapper functions. Basic Sledgehammer 
162 
commands are covered in the isarref manual 

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163 

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* Wrapper scripts for remote SystemOnTPTP service allows to use 
28475  165 
sledgehammer without local ATP installation (Vampire etc.). See also 
166 
ISABELLE_HOME/contrib/SystemOnTPTP and the VAMPIRE_HOME setting 

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variable. Other provers may be included via suitable ML wrappers, see 
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also src/HOL/ATP_Linkup.thy. 
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169 

28350  170 
* Normalization by evaluation now allows nonleftlinear equations. 
171 
Declare with attribute [code nbe]. 

172 

173 
* Command "value" now integrates different evaluation 

28248  174 
mechanisms. The result of the first successful evaluation mechanism 
175 
is printed. In square brackets a particular named evaluation 

176 
mechanisms may be specified (currently, [SML], [code] or [nbe]). See 

177 
further src/HOL/ex/Eval_Examples.thy. 

28227  178 

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179 
* HOL/Orderings: class "wellorder" moved here, with explicit induction 
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180 
rule "less_induct" as assumption. For instantiation of "wellorder" by 
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181 
means of predicate "wf", use rule wf_wellorderI. INCOMPATIBILITY. 
27823  182 

27793  183 
* HOL/Orderings: added class "preorder" as superclass of "order". 
184 
INCOMPATIBILITY: Instantiation proofs for order, linorder 

185 
etc. slightly changed. Some theorems named order_class.* now named 

186 
preorder_class.*. 

187 

28855  188 
* HOL/Finite_Set: added a new fold combinator of type 
189 
('a => 'b => 'b) => 'b => 'a set => 'b 

190 
Occasionally this is more convenient than the old fold combinator which is 

191 
now defined in terms of the new one and renamed to fold_image. 

192 

27793  193 
* HOL/Ring_and_Field and HOL/Divides: Definition of "op dvd" has been 
194 
moved to separate class dvd in Ring_and_Field; a couple of lemmas on 

195 
dvd has been generalized to class comm_semiring_1. Likewise a bunch 

196 
of lemmas from Divides has been generalized from nat to class 

197 
semiring_div. INCOMPATIBILITY. This involves the following theorem 

198 
renames resulting from duplicate elimination: 

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199 

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200 
dvd_def_mod ~> dvd_eq_mod_eq_0 
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201 
zero_dvd_iff ~> dvd_0_left_iff 
28559  202 
dvd_0 ~> dvd_0_right 
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203 
DIVISION_BY_ZERO_DIV ~> div_by_0 
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204 
DIVISION_BY_ZERO_MOD ~> mod_by_0 
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205 
mult_div ~> div_mult_self2_is_id 
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206 
mult_mod ~> mod_mult_self2_is_0 
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207 

27599  208 
* HOL/Library/GCD: Curried operations gcd, lcm (for nat) and zgcd, 
209 
zlcm (for int); carried together from various gcd/lcm developements in 

210 
the HOL Distribution. zgcd and zlcm replace former igcd and ilcm; 

211 
corresponding theorems renamed accordingly. INCOMPATIBILY. To 

212 
recover tupled syntax, use syntax declarations like: 

27556  213 

214 
hide (open) const gcd 

215 
abbreviation gcd where 

216 
"gcd == (%(a, b). GCD.gcd a b)" 

217 
notation (output) 

218 
GCD.gcd ("gcd '(_, _')") 

219 

220 
(analogously for lcm, zgcd, zlcm). 

221 

222 
* HOL/Real/Rational: 'Fract k 0' now equals '0'. INCOMPATIBILITY. 

27551  223 

27651
16a26996c30e
moved op dvd to theory Ring_and_Field; generalized a couple of lemmas
haftmann
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224 
* New ML antiquotation @{code}: takes constant as argument, generates 
16a26996c30e
moved op dvd to theory Ring_and_Field; generalized a couple of lemmas
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225 
corresponding code in background and inserts name of the corresponding 
16a26996c30e
moved op dvd to theory Ring_and_Field; generalized a couple of lemmas
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226 
resulting ML value/function/datatype constructor binding in place. 
16a26996c30e
moved op dvd to theory Ring_and_Field; generalized a couple of lemmas
haftmann
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227 
All occurrences of @{code} with a single ML block are generated 
16a26996c30e
moved op dvd to theory Ring_and_Field; generalized a couple of lemmas
haftmann
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228 
simultaneously. Provides a generic and safe interface for 
16a26996c30e
moved op dvd to theory Ring_and_Field; generalized a couple of lemmas
haftmann
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diff
changeset

229 
instrumentalizing code generation. See HOL/ex/Code_Antiq for a toy 
16a26996c30e
moved op dvd to theory Ring_and_Field; generalized a couple of lemmas
haftmann
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diff
changeset

230 
example, or HOL/Complex/ex/ReflectedFerrack for a more ambitious 
16a26996c30e
moved op dvd to theory Ring_and_Field; generalized a couple of lemmas
haftmann
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231 
application. In future you ought refrain from adhoc compiling 
16a26996c30e
moved op dvd to theory Ring_and_Field; generalized a couple of lemmas
haftmann
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changeset

232 
generated SML code on the ML toplevel. Note that (for technical 
16a26996c30e
moved op dvd to theory Ring_and_Field; generalized a couple of lemmas
haftmann
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233 
reasons) @{code} cannot refer to constants for which userdefined 
16a26996c30e
moved op dvd to theory Ring_and_Field; generalized a couple of lemmas
haftmann
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234 
serializations are set. Refer to the corresponding ML counterpart 
16a26996c30e
moved op dvd to theory Ring_and_Field; generalized a couple of lemmas
haftmann
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diff
changeset

235 
directly in that cases. 
16a26996c30e
moved op dvd to theory Ring_and_Field; generalized a couple of lemmas
haftmann
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diff
changeset

236 

27424  237 
* Integrated image HOLComplex with HOL. Entry points Main.thy and 
238 
Complex_Main.thy remain as they are. 

239 

27599  240 
* New image HOLPlain provides a minimal HOL with the most important 
241 
tools available (inductive, datatype, primrec, ...). By convention 

242 
the corresponding theory Plain should be ancestor of every further 

243 
(library) theory. Some library theories now have ancestor Plain 

244 
(instead of Main), thus theory Main occasionally has to be imported 

245 
explicitly. 

27421  246 

28248  247 
* The metis method now fails in the usual manner, rather than raising 
248 
an exception, if it determines that it cannot prove the theorem. 

28233
f14f34194f63
The metis method now fails in the usual manner, rather than raising an exception,
paulson
parents:
28227
diff
changeset

249 

28700
fb92b1d1b285
The metis method no longer fails because the theorem is too trivial
paulson
parents:
28685
diff
changeset

250 
* The metis method no longer fails because the theorem is too trivial 
fb92b1d1b285
The metis method no longer fails because the theorem is too trivial
paulson
parents:
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diff
changeset

251 
(contains the empty clause). 
fb92b1d1b285
The metis method no longer fails because the theorem is too trivial
paulson
parents:
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diff
changeset

252 

27324
904acdaf4299
induct_tac: mutual rules work as for method "induct";
wenzelm
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253 
* Methods "case_tac" and "induct_tac" now refer to the very same rules 
904acdaf4299
induct_tac: mutual rules work as for method "induct";
wenzelm
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254 
as the structured Isar versions "cases" and "induct", cf. the 
904acdaf4299
induct_tac: mutual rules work as for method "induct";
wenzelm
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255 
corresponding "cases" and "induct" attributes. Mutual induction rules 
904acdaf4299
induct_tac: mutual rules work as for method "induct";
wenzelm
parents:
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diff
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256 
are now presented as a list of individual projections 
904acdaf4299
induct_tac: mutual rules work as for method "induct";
wenzelm
parents:
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diff
changeset

257 
(e.g. foo_bar.inducts for types foo and bar); the old format with 
904acdaf4299
induct_tac: mutual rules work as for method "induct";
wenzelm
parents:
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diff
changeset

258 
explicit HOL conjunction is no longer supported. INCOMPATIBILITY, in 
904acdaf4299
induct_tac: mutual rules work as for method "induct";
wenzelm
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diff
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259 
rare situations a different rule is selected  notably nested tuple 
904acdaf4299
induct_tac: mutual rules work as for method "induct";
wenzelm
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260 
elimination instead of former prod.exhaust: use explicit (case_tac t 
904acdaf4299
induct_tac: mutual rules work as for method "induct";
wenzelm
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diff
changeset

261 
rule: prod.exhaust) here. 
27122  262 

27141
9bfcdb1905e1
* Attributes cases, induct, coinduct support del option.
wenzelm
parents:
27122
diff
changeset

263 
* Attributes "cases", "induct", "coinduct" support "del" option. 
9bfcdb1905e1
* Attributes cases, induct, coinduct support del option.
wenzelm
parents:
27122
diff
changeset

264 

27122  265 
* Removed fact "case_split_thm", which duplicates "case_split". 
266 

267 
* Command 'rep_datatype': instead of theorem names the command now 

268 
takes a list of terms denoting the constructors of the type to be 

269 
represented as datatype. The characteristic theorems have to be 

270 
proven. INCOMPATIBILITY. Also observe that the following theorems 

271 
have disappeared in favour of existing ones: 

272 

27104
791607529f6d
rep_datatype command now takes list of constructors as input arguments
haftmann
parents:
27067
diff
changeset

273 
unit_induct ~> unit.induct 
791607529f6d
rep_datatype command now takes list of constructors as input arguments
haftmann
parents:
27067
diff
changeset

274 
prod_induct ~> prod.induct 
791607529f6d
rep_datatype command now takes list of constructors as input arguments
haftmann
parents:
27067
diff
changeset

275 
sum_induct ~> sum.induct 
791607529f6d
rep_datatype command now takes list of constructors as input arguments
haftmann
parents:
27067
diff
changeset

276 
Suc_Suc_eq ~> nat.inject 
791607529f6d
rep_datatype command now takes list of constructors as input arguments
haftmann
parents:
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diff
changeset

277 
Suc_not_Zero Zero_not_Suc ~> nat.distinct 
791607529f6d
rep_datatype command now takes list of constructors as input arguments
haftmann
parents:
27067
diff
changeset

278 

27122  279 
* Library/Nat_Infinity: added addition, numeral syntax and more 
280 
instantiations for algebraic structures. Removed some duplicate 

281 
theorems. Changes in simp rules. INCOMPATIBILITY. 

27104
791607529f6d
rep_datatype command now takes list of constructors as input arguments
haftmann
parents:
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diff
changeset

282 

28088
723735f2d73a
* Name bindings in higher specification mechanisms;
wenzelm
parents:
28085
diff
changeset

283 
* ATP selection (E/Vampire/Spass) is now via Proof General's settings 
723735f2d73a
* Name bindings in higher specification mechanisms;
wenzelm
parents:
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diff
changeset

284 
menu. 
28067  285 

27104
791607529f6d
rep_datatype command now takes list of constructors as input arguments
haftmann
parents:
27067
diff
changeset

286 

27696  287 
*** HOLAlgebra *** 
288 

27713
95b36bfe7fc4
New locales for orders and lattices where the equivalence relation is not restricted to equality.
ballarin
parents:
27704
diff
changeset

289 
* New locales for orders and lattices where the equivalence relation 
95b36bfe7fc4
New locales for orders and lattices where the equivalence relation is not restricted to equality.
ballarin
parents:
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diff
changeset

290 
is not restricted to equality. INCOMPATIBILITY: all order and 
95b36bfe7fc4
New locales for orders and lattices where the equivalence relation is not restricted to equality.
ballarin
parents:
27704
diff
changeset

291 
lattice locales use a record structure with field eq for the 
95b36bfe7fc4
New locales for orders and lattices where the equivalence relation is not restricted to equality.
ballarin
parents:
27704
diff
changeset

292 
equivalence. 
95b36bfe7fc4
New locales for orders and lattices where the equivalence relation is not restricted to equality.
ballarin
parents:
27704
diff
changeset

293 

95b36bfe7fc4
New locales for orders and lattices where the equivalence relation is not restricted to equality.
ballarin
parents:
27704
diff
changeset

294 
* New theory of factorial domains. 
95b36bfe7fc4
New locales for orders and lattices where the equivalence relation is not restricted to equality.
ballarin
parents:
27704
diff
changeset

295 

27696  296 
* Units_l_inv and Units_r_inv are now simprules by default. 
297 
INCOMPATIBILITY. Simplifier proof that require deletion of l_inv 

298 
and/or r_inv will now also require deletion of these lemmas. 

299 

300 
* Renamed the following theorems. INCOMPATIBILITY. 

301 
UpperD ~> Upper_memD 

302 
LowerD ~> Lower_memD 

303 
least_carrier ~> least_closed 

304 
greatest_carrier ~> greatest_closed 

305 
greatest_Lower_above ~> greatest_Lower_below 

27717
21bbd410ba04
Generalised polynomial lemmas from cring to ring.
ballarin
parents:
27713
diff
changeset

306 
one_zero ~> carrier_one_zero 
21bbd410ba04
Generalised polynomial lemmas from cring to ring.
ballarin
parents:
27713
diff
changeset

307 
one_not_zero ~> carrier_one_not_zero (collision with assumption) 
27696  308 

27793  309 

27485  310 
*** HOLNSA *** 
311 

312 
* Created new image HOLNSA, containing theories of nonstandard 

313 
analysis which were previously part of HOLComplex. Entry point 

314 
Hyperreal.thy remains valid, but theories formerly using 

315 
Complex_Main.thy should now use new entry point Hypercomplex.thy. 

316 

317 

27704  318 
*** ZF *** 
319 

320 
* Proof of Zorn's Lemma for partial orders. 

321 

322 

27246
df85326af57c
* Rules and tactics that read instantiations now demand a proper context;
wenzelm
parents:
27200
diff
changeset

323 
*** ML *** 
28088
723735f2d73a
* Name bindings in higher specification mechanisms;
wenzelm
parents:
28085
diff
changeset

324 

28294  325 
* Simplified ML oracle interface Thm.add_oracle promotes 'a > cterm 
326 
to 'a > thm, while results are always tagged with an authentic oracle 

327 
name. The Isar command 'oracle' is now polymorphic, no argument type 

328 
is specified. INCOMPATIBILITY, need to simplify existing oracle code 

329 
accordingly. Note that extra performance may be gained by producing 

330 
the cterm carefully, avoiding slow Thm.cterm_of. 

331 

28282
44664ffc9725
* ML bindings produced via Isar commands are stored within the Isar context.
wenzelm
parents:
28254
diff
changeset

332 
* ML bindings produced via Isar commands are stored within the Isar 
44664ffc9725
* ML bindings produced via Isar commands are stored within the Isar context.
wenzelm
parents:
28254
diff
changeset

333 
context (theory or proof). Consequently, commands like 'use' and 'ML' 
44664ffc9725
* ML bindings produced via Isar commands are stored within the Isar context.
wenzelm
parents:
28254
diff
changeset

334 
become threadsafe and work with undo as expected (concerning 
44664ffc9725
* ML bindings produced via Isar commands are stored within the Isar context.
wenzelm
parents:
28254
diff
changeset

335 
toplevel bindings, not sideeffects on global references). 
44664ffc9725
* ML bindings produced via Isar commands are stored within the Isar context.
wenzelm
parents:
28254
diff
changeset

336 
INCOMPATIBILITY, need to provide proper Isar context when invoking the 
44664ffc9725
* ML bindings produced via Isar commands are stored within the Isar context.
wenzelm
parents:
28254
diff
changeset

337 
compiler at runtime; really global bindings need to be given outside a 
44664ffc9725
* ML bindings produced via Isar commands are stored within the Isar context.
wenzelm
parents:
28254
diff
changeset

338 
theory. [Poly/ML 5.2 or later] 
44664ffc9725
* ML bindings produced via Isar commands are stored within the Isar context.
wenzelm
parents:
28254
diff
changeset

339 

44664ffc9725
* ML bindings produced via Isar commands are stored within the Isar context.
wenzelm
parents:
28254
diff
changeset

340 
* Command 'ML_prf' is analogous to 'ML' but works within a proof 
44664ffc9725
* ML bindings produced via Isar commands are stored within the Isar context.
wenzelm
parents:
28254
diff
changeset

341 
context. Toplevel ML bindings are stored within the proof context in 
44664ffc9725
* ML bindings produced via Isar commands are stored within the Isar context.
wenzelm
parents:
28254
diff
changeset

342 
a purely sequential fashion, disregarding the nested proof structure. 
44664ffc9725
* ML bindings produced via Isar commands are stored within the Isar context.
wenzelm
parents:
28254
diff
changeset

343 
ML bindings introduced by 'ML_prf' are discarded at the end of the 
44664ffc9725
* ML bindings produced via Isar commands are stored within the Isar context.
wenzelm
parents:
28254
diff
changeset

344 
proof. [Poly/ML 5.2 or later] 
44664ffc9725
* ML bindings produced via Isar commands are stored within the Isar context.
wenzelm
parents:
28254
diff
changeset

345 

28099
fb16a07d6580
* Generic Toplevel.add_hook interface allows to analyze the result of
wenzelm
parents:
28089
diff
changeset

346 
* Generic Toplevel.add_hook interface allows to analyze the result of 
28103
b79e61861f0f
simplified Toplevel.add_hook: cover successful transactions only;
wenzelm
parents:
28099
diff
changeset

347 
transactions. E.g. see src/Pure/ProofGeneral/proof_general_pgip.ML 
b79e61861f0f
simplified Toplevel.add_hook: cover successful transactions only;
wenzelm
parents:
28099
diff
changeset

348 
for theorem dependency output of transactions resulting in a new 
b79e61861f0f
simplified Toplevel.add_hook: cover successful transactions only;
wenzelm
parents:
28099
diff
changeset

349 
theory state. 
28099
fb16a07d6580
* Generic Toplevel.add_hook interface allows to analyze the result of
wenzelm
parents:
28089
diff
changeset

350 

28088
723735f2d73a
* Name bindings in higher specification mechanisms;
wenzelm
parents:
28085
diff
changeset

351 
* Name bindings in higher specification mechanisms (notably 
723735f2d73a
* Name bindings in higher specification mechanisms;
wenzelm
parents:
28085
diff
changeset

352 
LocalTheory.define, LocalTheory.note, and derived packages) are now 
723735f2d73a
* Name bindings in higher specification mechanisms;
wenzelm
parents:
28085
diff
changeset

353 
formalized as type Name.binding, replacing old bstring. 
723735f2d73a
* Name bindings in higher specification mechanisms;
wenzelm
parents:
28085
diff
changeset

354 
INCOMPATIBILITY, need to wrap strings via Name.binding function, see 
723735f2d73a
* Name bindings in higher specification mechanisms;
wenzelm
parents:
28085
diff
changeset

355 
also Name.name_of. Packages should pass name bindings given by the 
723735f2d73a
* Name bindings in higher specification mechanisms;
wenzelm
parents:
28085
diff
changeset

356 
user to underlying specification mechanisms; this enables precise 
723735f2d73a
* Name bindings in higher specification mechanisms;
wenzelm
parents:
28085
diff
changeset

357 
tracking of source positions, for example. 
723735f2d73a
* Name bindings in higher specification mechanisms;
wenzelm
parents:
28085
diff
changeset

358 

28089
66ae1926482a
* Result facts now refer to the *full* internal name;
wenzelm
parents:
28088
diff
changeset

359 
* Result facts (from PureThy.note_thms, ProofContext.note_thms, 
66ae1926482a
* Result facts now refer to the *full* internal name;
wenzelm
parents:
28088
diff
changeset

360 
LocalTheory.note etc.) now refer to the *full* internal name, not the 
66ae1926482a
* Result facts now refer to the *full* internal name;
wenzelm
parents:
28088
diff
changeset

361 
bstring as before. INCOMPATIBILITY, not detected by ML typechecking! 
66ae1926482a
* Result facts now refer to the *full* internal name;
wenzelm
parents:
28088
diff
changeset

362 

27246
df85326af57c
* Rules and tactics that read instantiations now demand a proper context;
wenzelm
parents:
27200
diff
changeset

363 
* Rules and tactics that read instantiations (read_instantiate, 
df85326af57c
* Rules and tactics that read instantiations now demand a proper context;
wenzelm
parents:
27200
diff
changeset

364 
res_inst_tac, thin_tac, subgoal_tac etc.) now demand a proper proof 
df85326af57c
* Rules and tactics that read instantiations now demand a proper context;
wenzelm
parents:
27200
diff
changeset

365 
context, which is required for parsing and typechecking. Moreover, 
df85326af57c
* Rules and tactics that read instantiations now demand a proper context;
wenzelm
parents:
27200
diff
changeset

366 
the variables are specified as plain indexnames, not string encodings 
df85326af57c
* Rules and tactics that read instantiations now demand a proper context;
wenzelm
parents:
27200
diff
changeset

367 
thereof. INCOMPATIBILITY. 
df85326af57c
* Rules and tactics that read instantiations now demand a proper context;
wenzelm
parents:
27200
diff
changeset

368 

27287  369 
* Disposed old type and term read functions (Sign.read_def_typ, 
370 
Sign.read_typ, Sign.read_def_terms, Sign.read_term, 

371 
Thm.read_def_cterms, Thm.read_cterm etc.). INCOMPATIBILITY, should 

372 
use regular Syntax.read_typ, Syntax.read_term, Syntax.read_typ_global, 

27269  373 
Syntax.read_term_global etc.; see also OldGoals.read_term as last 
374 
resort for legacy applications. 

375 

27380  376 
* Antiquotations: blockstructured compilation context indicated by 
27391  377 
\<lbrace> ... \<rbrace>; additional antiquotation forms: 
378 

27519
59b54d80d2ae
slightly improved @{lemma} (both for latex and ML);
wenzelm
parents:
27485
diff
changeset

379 
@{let ?pat = term}  term abbreviation (HO matching) 
59b54d80d2ae
slightly improved @{lemma} (both for latex and ML);
wenzelm
parents:
27485
diff
changeset

380 
@{note name = fact}  fact abbreviation 
59b54d80d2ae
slightly improved @{lemma} (both for latex and ML);
wenzelm
parents:
27485
diff
changeset

381 
@{thm fact}  singleton fact (with attributes) 
59b54d80d2ae
slightly improved @{lemma} (both for latex and ML);
wenzelm
parents:
27485
diff
changeset

382 
@{thms fact}  general fact (with attributes) 
59b54d80d2ae
slightly improved @{lemma} (both for latex and ML);
wenzelm
parents:
27485
diff
changeset

383 
@{lemma prop by method}  singleton goal 
59b54d80d2ae
slightly improved @{lemma} (both for latex and ML);
wenzelm
parents:
27485
diff
changeset

384 
@{lemma prop by meth1 meth2}  singleton goal 
59b54d80d2ae
slightly improved @{lemma} (both for latex and ML);
wenzelm
parents:
27485
diff
changeset

385 
@{lemma prop1 ... propN by method}  general goal 
59b54d80d2ae
slightly improved @{lemma} (both for latex and ML);
wenzelm
parents:
27485
diff
changeset

386 
@{lemma prop1 ... propN by meth1 meth2}  general goal 
59b54d80d2ae
slightly improved @{lemma} (both for latex and ML);
wenzelm
parents:
27485
diff
changeset

387 
@{lemma (open) ...}  open derivation 
27380  388 

27246
df85326af57c
* Rules and tactics that read instantiations now demand a proper context;
wenzelm
parents:
27200
diff
changeset

389 

27979  390 
*** System *** 
391 

28676
78688a5fafc2
multithreading support only for polyml5.2.1 or later;
wenzelm
parents:
28633
diff
changeset

392 
* Multithreading for Poly/ML 5.1/5.2 is no longer supported, only for 
78688a5fafc2
multithreading support only for polyml5.2.1 or later;
wenzelm
parents:
28633
diff
changeset

393 
Poly/ML 5.2.1 or later. 
28254
d67ba23e0277
multithreading for Poly/ML 5.1 is no longer supported;
wenzelm
parents:
28252
diff
changeset

394 

28248  395 
* The Isabelle "emacs" tool provides a specific interface to invoke 
396 
Proof General / Emacs, with more explicit failure if that is not 

397 
installed (the old isabelleinterface script silently falls back on 

398 
isabelleprocess). The PROOFGENERAL_HOME setting determines the 

399 
installation location of the Proof General distribution. 

400 

27979  401 
* Isabelle/lib/classes/Pure.jar provides basic support to integrate 
402 
the Isabelle process into a JVM/Scala application. See 

403 
Isabelle/lib/jedit/plugin for a minimal example. (The obsolete Java 

404 
process wrapper has been discontinued.) 

405 

406 
* Status messages (with exact source position information) are 

407 
emitted, if proper markup print mode is enabled. This allows 

408 
userinterface components to provide detailed feedback on internal 

409 
prover operations. 

410 

411 
* Homegrown Isabelle font with unicode layout, see Isabelle/lib/fonts. 

412 

413 

27143  414 

27008  415 
New in Isabelle2008 (June 2008) 
416 
 

25464
0ca80ce89001
moved new NEWS from Isabelle2007 to this Isabelle version'';
wenzelm
parents:
25459
diff
changeset

417 

25522  418 
*** General *** 
419 

27061  420 
* The Isabelle/Isar Reference Manual (isarref) has been reorganized 
421 
and updated, with formally checked references as hyperlinks. 

422 

25994  423 
* Theory loader: use_thy (and similar operations) no longer set the 
424 
implicit ML context, which was occasionally hard to predict and in 

425 
conflict with concurrency. INCOMPATIBILITY, use ML within Isar which 

426 
provides a proper context already. 

427 

26323
73efc70edeef
theory loader: discontinued *attached* ML scripts;
wenzelm
parents:
26315
diff
changeset

428 
* Theory loader: oldstyle ML proof scripts being *attached* to a thy 
73efc70edeef
theory loader: discontinued *attached* ML scripts;
wenzelm
parents:
26315
diff
changeset

429 
file are no longer supported. INCOMPATIBILITY, regular 'uses' and 
73efc70edeef
theory loader: discontinued *attached* ML scripts;
wenzelm
parents:
26315
diff
changeset

430 
'use' within a theory file will do the job. 
73efc70edeef
theory loader: discontinued *attached* ML scripts;
wenzelm
parents:
26315
diff
changeset

431 

26650  432 
* Name space merge now observes canonical order, i.e. the second space 
433 
is inserted into the first one, while existing entries in the first 

26659  434 
space take precedence. INCOMPATIBILITY in rare situations, may try to 
26650  435 
swap theory imports. 
436 

27067  437 
* Syntax: symbol \<chi> is now considered a letter. Potential 
438 
INCOMPATIBILITY in identifier syntax etc. 

439 

440 
* Outer syntax: string tokens no longer admit escaped white space, 

441 
which was an accidental (undocumented) feature. INCOMPATIBILITY, use 

442 
white space without escapes. 

443 

444 
* Outer syntax: string tokens may contain arbitrary character codes 

445 
specified via 3 decimal digits (as in SML). E.g. "foo\095bar" for 

446 
"foo_bar". 

447 

25522  448 

25502  449 
*** Pure *** 
450 

26718  451 
* Contextdependent token translations. Default setup reverts locally 
452 
fixed variables, and adds hilite markup for undeclared frees. 

453 

26681  454 
* Unused theorems can be found using the new command 'unused_thms'. 
455 
There are three ways of invoking it: 

456 

457 
(1) unused_thms 

458 
Only finds unused theorems in the current theory. 

459 

460 
(2) unused_thms thy_1 ... thy_n  

461 
Finds unused theorems in the current theory and all of its ancestors, 

462 
excluding the theories thy_1 ... thy_n and all of their ancestors. 

463 

464 
(3) unused_thms thy_1 ... thy_n  thy'_1 ... thy'_m 

465 
Finds unused theorems in the theories thy'_1 ... thy'_m and all of 

466 
their ancestors, excluding the theories thy_1 ... thy_n and all of 

467 
their ancestors. 

468 

26718  469 
In order to increase the readability of the list produced by 
470 
unused_thms, theorems that have been created by a particular instance 

26874  471 
of a theory command such as 'inductive' or 'function' are considered 
472 
to belong to the same "group", meaning that if at least one theorem in 

26718  473 
this group is used, the other theorems in the same group are no longer 
474 
reported as unused. Moreover, if all theorems in the group are 

475 
unused, only one theorem in the group is displayed. 

476 

477 
Note that proof objects have to be switched on in order for 

478 
unused_thms to work properly (i.e. !proofs must be >= 1, which is 

26874  479 
usually the case when using Proof General with the default settings). 
26681  480 

26650  481 
* Authentic naming of facts disallows adhoc overwriting of previous 
482 
theorems within the same name space. INCOMPATIBILITY, need to remove 

483 
duplicate fact bindings, or even accidental fact duplications. Note 

484 
that tools may maintain dynamically scoped facts systematically, using 

485 
PureThy.add_thms_dynamic. 

486 

26660  487 
* Command 'hide' now allows to hide from "fact" name space as well. 
488 

26496
49ae9456eba9
purely functional setup of claset/simpset/clasimpset;
wenzelm
parents:
26495
diff
changeset

489 
* Eliminated destructive theorem database, simpset, claset, and 
49ae9456eba9
purely functional setup of claset/simpset/clasimpset;
wenzelm
parents:
26495
diff
changeset

490 
clasimpset. Potential INCOMPATIBILITY, really need to observe linear 
49ae9456eba9
purely functional setup of claset/simpset/clasimpset;
wenzelm
parents:
26495
diff
changeset

491 
update of theories within ML code. 
26479  492 

26955
ebbaa935eae0
* Eliminated theory ProtoPure and CPure, leaving just one Pure theory.
wenzelm
parents:
26925
diff
changeset

493 
* Eliminated theory ProtoPure and CPure, leaving just one Pure theory. 
ebbaa935eae0
* Eliminated theory ProtoPure and CPure, leaving just one Pure theory.
wenzelm
parents:
26925
diff
changeset

494 
INCOMPATIBILITY, objectlogics depending on former Pure require 
ebbaa935eae0
* Eliminated theory ProtoPure and CPure, leaving just one Pure theory.
wenzelm
parents:
26925
diff
changeset

495 
additional setup PureThy.old_appl_syntax_setup; objectlogics 
ebbaa935eae0
* Eliminated theory ProtoPure and CPure, leaving just one Pure theory.
wenzelm
parents:
26925
diff
changeset

496 
depending on former CPure need to refer to Pure. 
26650  497 

26495  498 
* Commands 'use' and 'ML' are now purely functional, operating on 
26479  499 
theory/local_theory. Removed former 'ML_setup' (on theory), use 'ML' 
500 
instead. Added 'ML_val' as mere diagnostic replacement for 'ML'. 

501 
INCOMPATIBILITY. 

502 

26874  503 
* Command 'setup': discontinued implicit version with ML reference. 
26434  504 

25970
9053fd546501
* Default settings: PROOFGENERAL_OPTIONS no longer impose xemacs here;
wenzelm
parents:
25961
diff
changeset

505 
* Instantiation target allows for simultaneous specification of class 
9053fd546501
* Default settings: PROOFGENERAL_OPTIONS no longer impose xemacs here;
wenzelm
parents:
25961
diff
changeset

506 
instance operations together with an instantiation proof. 
9053fd546501
* Default settings: PROOFGENERAL_OPTIONS no longer impose xemacs here;
wenzelm
parents:
25961
diff
changeset

507 
Typechecking phase allows to refer to class operations uniformly. 
27067  508 
See src/HOL/Complex/Complex.thy for an Isar example and 
509 
src/HOL/Library/Eval.thy for an ML example. 

25502  510 

26201
d3363a854708
indexing literal facts: exclude background context;
wenzelm
parents:
26197
diff
changeset

511 
* Indexing of literal facts: be more serious about including only 
d3363a854708
indexing literal facts: exclude background context;
wenzelm
parents:
26197
diff
changeset

512 
facts from the visible specification/proof context, but not the 
d3363a854708
indexing literal facts: exclude background context;
wenzelm
parents:
26197
diff
changeset

513 
background context (locale etc.). Affects `prop` notation and method 
d3363a854708
indexing literal facts: exclude background context;
wenzelm
parents:
26197
diff
changeset

514 
"fact". INCOMPATIBILITY: need to name facts explicitly in rare 
d3363a854708
indexing literal facts: exclude background context;
wenzelm
parents:
26197
diff
changeset

515 
situations. 
d3363a854708
indexing literal facts: exclude background context;
wenzelm
parents:
26197
diff
changeset

516 

26925
ce964f0df281
* Method "cases", "induct", "coinduct": removed obsolete "(open)" option;
wenzelm
parents:
26920
diff
changeset

517 
* Method "cases", "induct", "coinduct": removed obsolete/undocumented 
ce964f0df281
* Method "cases", "induct", "coinduct": removed obsolete "(open)" option;
wenzelm
parents:
26920
diff
changeset

518 
"(open)" option, which used to expose internal bound variables to the 
ce964f0df281
* Method "cases", "induct", "coinduct": removed obsolete "(open)" option;
wenzelm
parents:
26920
diff
changeset

519 
proof text. 
ce964f0df281
* Method "cases", "induct", "coinduct": removed obsolete "(open)" option;
wenzelm
parents:
26920
diff
changeset

520 

ce964f0df281
* Method "cases", "induct", "coinduct": removed obsolete "(open)" option;
wenzelm
parents:
26920
diff
changeset

521 
* Isar statements: removed obsolete case "rule_context". 
ce964f0df281
* Method "cases", "induct", "coinduct": removed obsolete "(open)" option;
wenzelm
parents:
26920
diff
changeset

522 
INCOMPATIBILITY, better use explicit fixes/assumes. 
ce964f0df281
* Method "cases", "induct", "coinduct": removed obsolete "(open)" option;
wenzelm
parents:
26920
diff
changeset

523 

26874  524 
* Locale proofs: default proof step now includes 'unfold_locales'; 
525 
hence 'proof' without argument may be used to unfold locale 

526 
predicates. 

26765  527 

528 

26762  529 
*** Document preparation *** 
530 

26914  531 
* Simplified pdfsetup.sty: color/hyperref is used unconditionally for 
532 
both pdf and dvi (hyperlinks usually work in xdvi as well); removed 

533 
obsolete thumbpdf setup (contemporary PDF viewers do this on the 

534 
spot); renamed link color from "darkblue" to "linkcolor" (default 

26920  535 
value unchanged, can be redefined via \definecolor); no longer sets 
536 
"a4paper" option (unnecessary or even intrusive). 

26914  537 

27008  538 
* Antiquotation @{lemma A method} proves proposition A by the given 
539 
method (either a method name or a method name plus (optional) method 

540 
arguments in parentheses) and prints A just like @{prop A}. 

26762  541 

542 

25464
0ca80ce89001
moved new NEWS from Isabelle2007 to this Isabelle version'';
wenzelm
parents:
25459
diff
changeset

543 
*** HOL *** 
0ca80ce89001
moved new NEWS from Isabelle2007 to this Isabelle version'';
wenzelm
parents:
25459
diff
changeset

544 

27067  545 
* New primrec package. Specification syntax conforms in style to 
546 
definition/function/.... No separate induction rule is provided. The 

547 
"primrec" command distinguishes oldstyle and newstyle specifications 

548 
by syntax. The former primrec package is now named OldPrimrecPackage. 

549 
When adjusting theories, beware: constants stemming from newstyle 

550 
primrec specifications have authentic syntax. 

551 

552 
* Metis prover is now an order of magnitude faster, and also works 

553 
with multithreading. 

554 

555 
* Metis: the maximum number of clauses that can be produced from a 

556 
theorem is now given by the attribute max_clauses. Theorems that 

557 
exceed this number are ignored, with a warning printed. 

558 

559 
* Sledgehammer no longer produces structured proofs by default. To 

560 
enable, declare [[sledgehammer_full = true]]. Attributes 

561 
reconstruction_modulus, reconstruction_sorts renamed 

562 
sledgehammer_modulus, sledgehammer_sorts. INCOMPATIBILITY. 

563 

27104
791607529f6d
rep_datatype command now takes list of constructors as input arguments
haftmann
parents:
27067
diff
changeset

564 
* Method "induct_scheme" derives userspecified induction rules 
27067  565 
from wellfounded induction and completeness of patterns. This factors 
566 
out some operations that are done internally by the function package 

567 
and makes them available separately. See 

568 
src/HOL/ex/Induction_Scheme.thy for examples. 

569 

570 
* More flexible generation of measure functions for termination 

571 
proofs: Measure functions can be declared by proving a rule of the 

572 
form "is_measure f" and giving it the [measure_function] attribute. 

573 
The "is_measure" predicate is logically meaningless (always true), and 

574 
just guides the heuristic. To find suitable measure functions, the 

575 
termination prover sets up the goal "is_measure ?f" of the appropriate 

576 
type and generates all solutions by prologstyle backwards proof using 

577 
the declared rules. 

578 

579 
This setup also deals with rules like 

580 

581 
"is_measure f ==> is_measure (list_size f)" 

582 

583 
which accommodates nested datatypes that recurse through lists. 

584 
Similar rules are predeclared for products and option types. 

585 

26964
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

586 
* Turned the type of sets "'a set" into an abbreviation for "'a => bool" 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

587 

df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

588 
INCOMPATIBILITIES: 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

589 

27008  590 
 Definitions of overloaded constants on sets have to be replaced by 
591 
definitions on => and bool. 

26964
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

592 

df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

593 
 Some definitions of overloaded operators on sets can now be proved 
27008  594 
using the definitions of the operators on => and bool. Therefore, 
595 
the following theorems have been renamed: 

26964
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

596 

df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

597 
subset_def > subset_eq 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

598 
psubset_def > psubset_eq 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

599 
set_diff_def > set_diff_eq 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

600 
Compl_def > Compl_eq 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

601 
Sup_set_def > Sup_set_eq 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

602 
Inf_set_def > Inf_set_eq 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

603 
sup_set_def > sup_set_eq 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

604 
inf_set_def > inf_set_eq 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

605 

df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

606 
 Due to the incompleteness of the HO unification algorithm, some 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

607 
rules such as subst may require manual instantiation, if some of 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

608 
the unknowns in the rule is a set. 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

609 

df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

610 
 Higher order unification and forward proofs: 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

611 
The proof pattern 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

612 

df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

613 
have "P (S::'a set)" <...> 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

614 
then have "EX S. P S" .. 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

615 

27008  616 
no longer works (due to the incompleteness of the HO unification 
617 
algorithm) and must be replaced by the pattern 

26964
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

618 

df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

619 
have "EX S. P S" 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

620 
proof 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

621 
show "P S" <...> 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

622 
qed 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

623 

df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

624 
 Calculational reasoning with subst (or similar rules): 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

625 
The proof pattern 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

626 

df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

627 
have "P (S::'a set)" <...> 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

628 
also have "S = T" <...> 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

629 
finally have "P T" . 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

630 

27008  631 
no longer works (for similar reasons as the previous example) and 
632 
must be replaced by something like 

26964
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

633 

df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

634 
have "P (S::'a set)" <...> 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

635 
moreover have "S = T" <...> 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

636 
ultimately have "P T" by simp 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

637 

df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

638 
 Tactics or packages written in ML code: 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

639 
Code performing pattern matching on types via 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

640 

df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

641 
Type ("set", [T]) => ... 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

642 

27008  643 
must be rewritten. Moreover, functions like strip_type or 
644 
binder_types no longer return the right value when applied to a 

645 
type of the form 

26964
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

646 

df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

647 
T1 => ... => Tn => U => bool 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

648 

df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

649 
rather than 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

650 

df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

651 
T1 => ... => Tn => U set 
df1f238a05f7
Added entry explaining incompatibilities introduced by replacing sets by predicates.
berghofe
parents:
26955
diff
changeset

652 

26874  653 
* Merged theories Wellfounded_Recursion, Accessible_Part and 
27067  654 
Wellfounded_Relations to theory Wellfounded. 
26748
4d51ddd6aa5c
Merged theories about wellfoundedness into one: Wellfounded.thy
krauss
parents:
26724
diff
changeset

655 

26513  656 
* Explicit class "eq" for executable equality. INCOMPATIBILITY. 
657 

26874  658 
* Class finite no longer treats UNIV as class parameter. Use class 
659 
enum from theory Library/Enum instead to achieve a similar effect. 

26445  660 
INCOMPATIBILITY. 
661 

26874  662 
* Theory List: rule list_induct2 now has explicitly named cases "Nil" 
663 
and "Cons". INCOMPATIBILITY. 

664 

26422
d5883907c514
HOL (and FOL): renamed variables in rules imp_elim and swap;
wenzelm
parents:
26401
diff
changeset

665 
* HOL (and FOL): renamed variables in rules imp_elim and swap. 
d5883907c514
HOL (and FOL): renamed variables in rules imp_elim and swap;
wenzelm
parents:
26401
diff
changeset

666 
Potential INCOMPATIBILITY. 
d5883907c514
HOL (and FOL): renamed variables in rules imp_elim and swap;
wenzelm
parents:
26401
diff
changeset

667 

26874  668 
* Theory Product_Type: duplicated lemmas split_Pair_apply and 
669 
injective_fst_snd removed, use split_eta and prod_eqI instead. 

670 
Renamed upd_fst to apfst and upd_snd to apsnd. INCOMPATIBILITY. 

26355  671 

26335
961bbcc9d85b
removed redundant Nat.less_not_sym, Nat.less_asym;
wenzelm
parents:
26333
diff
changeset

672 
* Theory Nat: removed redundant lemmas that merely duplicate lemmas of 
961bbcc9d85b
removed redundant Nat.less_not_sym, Nat.less_asym;
wenzelm
parents:
26333
diff
changeset

673 
the same name in theory Orderings: 
961bbcc9d85b
removed redundant Nat.less_not_sym, Nat.less_asym;
wenzelm
parents:
26333
diff
changeset

674 

961bbcc9d85b
removed redundant Nat.less_not_sym, Nat.less_asym;
wenzelm
parents:
26333
diff
changeset

675 
less_trans 
961bbcc9d85b
removed redundant Nat.less_not_sym, Nat.less_asym;
wenzelm
parents:
26333
diff
changeset

676 
less_linear 
961bbcc9d85b
removed redundant Nat.less_not_sym, Nat.less_asym;
wenzelm
parents:
26333
diff
changeset

677 
le_imp_less_or_eq 
961bbcc9d85b
removed redundant Nat.less_not_sym, Nat.less_asym;
wenzelm
parents:
26333
diff
changeset

678 
le_less_trans 
961bbcc9d85b
removed redundant Nat.less_not_sym, Nat.less_asym;
wenzelm
parents:
26333
diff
changeset

679 
less_le_trans 
961bbcc9d85b
removed redundant Nat.less_not_sym, Nat.less_asym;
wenzelm
parents:
26333
diff
changeset

680 
less_not_sym 
961bbcc9d85b
removed redundant Nat.less_not_sym, Nat.less_asym;
wenzelm
parents:
26333
diff
changeset

681 
less_asym 
961bbcc9d85b
removed redundant Nat.less_not_sym, Nat.less_asym;
wenzelm
parents:
26333
diff
changeset

682 

961bbcc9d85b
removed redundant Nat.less_not_sym, Nat.less_asym;
wenzelm
parents:
26333
diff
changeset

683 
Renamed less_imp_le to less_imp_le_nat, and less_irrefl to 
961bbcc9d85b
removed redundant Nat.less_not_sym, Nat.less_asym;
wenzelm
parents:
26333
diff
changeset

684 
less_irrefl_nat. Potential INCOMPATIBILITY due to more general types 
961bbcc9d85b
removed redundant Nat.less_not_sym, Nat.less_asym;
wenzelm
parents:
26333
diff
changeset

685 
and different variable names. 
26315
cb3badaa192e
removed redundant less_trans, less_linear, le_imp_less_or_eq, le_less_trans, less_le_trans (cf. Orderings.thy);
wenzelm
parents:
26231
diff
changeset

686 

26231  687 
* Library/Option_ord.thy: Canonical order on option type. 
688 

27008  689 
* Library/RBT.thy: Redblack trees, an efficient implementation of 
690 
finite maps. 

26197  691 

26231  692 
* Library/Countable.thy: Type class for countable types. 
693 

26180
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

694 
* Theory Int: The representation of numerals has changed. The infix 
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

695 
operator BIT and the bit datatype with constructors B0 and B1 have 
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

696 
disappeared. INCOMPATIBILITY, use "Int.Bit0 x" and "Int.Bit1 y" in 
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

697 
place of "x BIT bit.B0" and "y BIT bit.B1", respectively. Theorems 
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

698 
involving BIT, B0, or B1 have been renamed with "Bit0" or "Bit1" 
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

699 
accordingly. 
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

700 

cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

701 
* Theory Nat: definition of <= and < on natural numbers no longer 
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

702 
depend on wellfounded relations. INCOMPATIBILITY. Definitions 
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

703 
le_def and less_def have disappeared. Consider lemmas not_less 
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

704 
[symmetric, where ?'a = nat] and less_eq [symmetric] instead. 
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

705 

cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

706 
* Theory Finite_Set: locales ACf, ACe, ACIf, ACIfSL and ACIfSLlin 
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

707 
(whose purpose mainly is for various fold_set functionals) have been 
26874  708 
abandoned in favor of the existing algebraic classes 
26180
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

709 
ab_semigroup_mult, comm_monoid_mult, ab_semigroup_idem_mult, 
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

710 
lower_semilattice (resp. upper_semilattice) and linorder. 
26139  711 
INCOMPATIBILITY. 
26041
c2e15e65165f
locales ACf, ACIf, ACIfSL and ACIfSLlin have been abandoned in favour of the existing algebraic classes ab_semigroup_mult, ab_semigroup_idem_mult, lower_semilattice (resp. uper_semilattice) and linorder
haftmann
parents:
26013
diff
changeset

712 

26180
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

713 
* Theory Transitive_Closure: induct and cases rules now declare proper 
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

714 
case_names ("base" and "step"). INCOMPATIBILITY. 
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

715 

cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

716 
* Theorem Inductive.lfp_ordinal_induct generalized to complete 
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

717 
lattices. The form setspecific version is available as 
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

718 
Inductive.lfp_ordinal_induct_set. 
26013
8764a1f1253b
Theorem Inductive.lfp_ordinal_induct generalized to complete lattices
haftmann
parents:
26006
diff
changeset

719 

26874  720 
* Renamed theorems "power.simps" to "power_int.simps". 
27067  721 
INCOMPATIBILITY. 
25961  722 

26180
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

723 
* Class semiring_div provides basic abstract properties of semirings 
25942  724 
with division and modulo operations. Subsumes former class dvd_mod. 
725 

26180
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

726 
* Merged theories IntDef, Numeral and IntArith into unified theory 
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

727 
Int. INCOMPATIBILITY. 
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

728 

cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

729 
* Theory Library/Code_Index: type "index" now represents natural 
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

730 
numbers rather than integers. INCOMPATIBILITY. 
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

731 

cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

732 
* New class "uminus" with operation "uminus" (split of from class 
cc85eaab20f6
Transitive_Closure: induct and cases rules now declare proper case_names;
wenzelm
parents:
26139
diff
changeset

733 
"minus" which now only has operation "minus", binary). 
25919
8b1c0d434824
joined theories IntDef, Numeral, IntArith to theory Int
haftmann
parents:
25900
diff
changeset

734 
INCOMPATIBILITY. 
8b1c0d434824
joined theories IntDef, Numeral, IntArith to theory Int
haftmann
parents:
25900
diff
changeset

735 

25522  736 
* Constants "card", "internal_split", "option_map" now with authentic 
25919
8b1c0d434824
joined theories IntDef, Numeral, IntArith to theory Int
haftmann
parents:
25900
diff
changeset

737 
syntax. INCOMPATIBILITY. 
25522  738 

739 
* Definitions subset_def, psubset_def, set_diff_def, Compl_def, 

740 
le_bool_def, less_bool_def, le_fun_def, less_fun_def, inf_bool_def, 

741 
sup_bool_def, Inf_bool_def, Sup_bool_def, inf_fun_def, sup_fun_def, 

742 
Inf_fun_def, Sup_fun_def, inf_set_def, sup_set_def, Inf_set_def, 

743 
Sup_set_def, le_def, less_def, option_map_def now with object 

25919
8b1c0d434824
joined theories IntDef, Numeral, IntArith to theory Int
haftmann
parents:
25900
diff
changeset

744 
equality. INCOMPATIBILITY. 
25464
0ca80ce89001
moved new NEWS from Isabelle2007 to this Isabelle version'';
wenzelm
parents:
25459
diff
changeset

745 

25705  746 
* Records. Removed K_record, and replaced it by pure lambda term 
25726
9728f319ffc6
* Metis prover an order of magnitude faster, works with multithreading.
wenzelm
parents:
25712
diff
changeset

747 
%x. c. The simplifier setup is now more robust against eta expansion. 
25705  748 
INCOMPATIBILITY: in cases explicitly referring to K_record. 
25464
0ca80ce89001
moved new NEWS from Isabelle2007 to this Isabelle version'';
wenzelm
parents:
25459
diff
changeset

749 

27067  750 
* Library/Multiset: {#a, b, c#} abbreviates {#a#} + {#b#} + {#c#}. 
751 

752 
* Library/ListVector: new theory of arithmetic vector operations. 

753 

754 
* Library/Order_Relation: new theory of various orderings as sets of 

755 
pairs. Defines preorders, partial orders, linear orders and 

756 
wellorders on sets and on types. 

26877  757 

25726
9728f319ffc6
* Metis prover an order of magnitude faster, works with multithreading.
wenzelm
parents:
25712
diff
changeset

758 

26197  759 
*** ZF *** 
760 

26874  761 
* Renamed some theories to allow to loading both ZF and HOL in the 
762 
same session: 

763 

764 
Datatype > Datatype_ZF 

765 
Inductive > Inductive_ZF 

766 
Int > Int_ZF 

767 
IntDiv > IntDiv_ZF 

768 
Nat > Nat_ZF 

769 
List > List_ZF 

770 
Main > Main_ZF 

771 

772 
INCOMPATIBILITY: ZF theories that import individual theories below 

773 
Main might need to be adapted. Regular theory Main is still 

774 
available, as trivial extension of Main_ZF. 

26197  775 

776 

25737
84c92fc48e36
``print mode'' is now a threadlocal value derived from a global template;
wenzelm
parents:
25726
diff
changeset

777 
*** ML *** 
84c92fc48e36
``print mode'' is now a threadlocal value derived from a global template;
wenzelm
parents:
25726
diff
changeset

778 

27067  779 
* ML within Isar: antiquotation @{const name} or @{const 
780 
name(typargs)} produces staticallychecked Const term. 

781 

26401
e7a94081dce7
Functor NamedThmsFun: data is available to the user as dynamic fact;
wenzelm
parents:
26387
diff
changeset

782 
* Functor NamedThmsFun: data is available to the user as dynamic fact 
26724
ff6ff3a9010e
NamedThmsFun: removed obsolete print command  facts are accesible via dynamic name;
wenzelm
parents:
26718
diff
changeset

783 
(of the same name). Removed obsolete print command. 
26401
e7a94081dce7
Functor NamedThmsFun: data is available to the user as dynamic fact;
wenzelm
parents:
26387
diff
changeset

784 

27067  785 
* Removed obsolete "use_legacy_bindings" function. 
26188  786 

25737
84c92fc48e36
``print mode'' is now a threadlocal value derived from a global template;
wenzelm
parents:
25726
diff
changeset

787 
* The ``print mode'' is now a threadlocal value derived from a global 
84c92fc48e36
``print mode'' is now a threadlocal value derived from a global template;
wenzelm
parents:
25726
diff
changeset

788 
template (the former print_mode reference), thus access becomes 
84c92fc48e36
``print mode'' is now a threadlocal value derived from a global template;
wenzelm
parents:
25726
diff
changeset

789 
noncritical. The global print_mode reference is for session 
84c92fc48e36
``print mode'' is now a threadlocal value derived from a global template;
wenzelm
parents:
25726
diff
changeset

790 
management only; usercode should use print_mode_value, 
84c92fc48e36
``print mode'' is now a threadlocal value derived from a global template;
wenzelm
parents:
25726
diff
changeset

791 
print_mode_active, PrintMode.setmp etc. INCOMPATIBILITY. 
84c92fc48e36
``print mode'' is now a threadlocal value derived from a global template;
wenzelm
parents:
25726
diff
changeset

792 

26874  793 
* Functions system/system_out provide a robust way to invoke external 
27008  794 
shell commands, with propagation of interrupts (requires Poly/ML 5.2). 
26874  795 
Do not use OS.Process.system etc. from the basis library! 
26222
edf6473ac9e9
* system/system_out provides a robust way to invoke external shell
wenzelm
parents:
26218
diff
changeset

796 

25737
84c92fc48e36
``print mode'' is now a threadlocal value derived from a global template;
wenzelm
parents:
25726
diff
changeset

797 

25626
3000965b1fdf
* isatool tty runs Isabelle process with plain tty interaction;
wenzelm
parents:
25609
diff
changeset

798 
*** System *** 
3000965b1fdf
* isatool tty runs Isabelle process with plain tty interaction;
wenzelm
parents:
25609
diff
changeset

799 

25971  800 
* Default settings: PROOFGENERAL_OPTIONS no longer impose xemacs  
801 
in accordance with Proof General 3.7, which prefers GNU emacs. 

25970
9053fd546501
* Default settings: PROOFGENERAL_OPTIONS no longer impose xemacs here;
wenzelm
parents:
25961
diff
changeset

802 

25626
3000965b1fdf
* isatool tty runs Isabelle process with plain tty interaction;
wenzelm
parents:
25609
diff
changeset

803 
* isatool tty runs Isabelle process with plain tty interaction; 
3000965b1fdf
* isatool tty runs Isabelle process with plain tty interaction;
wenzelm
parents:
25609
diff
changeset

804 
optional line editor may be specified via ISABELLE_LINE_EDITOR 
3000965b1fdf
* isatool tty runs Isabelle process with plain tty interaction;
wenzelm
parents:
25609
diff
changeset

805 
setting, the default settings attempt to locate "ledit" and "rlwrap". 
3000965b1fdf
* isatool tty runs Isabelle process with plain tty interaction;
wenzelm
parents:
25609
diff
changeset

806 

25651  807 
* isatool browser now works with Cygwin as well, using general 
808 
"javapath" function defined in Isabelle process environment. 

809 

27067  810 
* YXML notation provides a simple and efficient alternative to 
811 
standard XML transfer syntax. See src/Pure/General/yxml.ML and 

812 
isatool yxml as described in the Isabelle system manual. 

25651  813 

25652  814 
* JVM class isabelle.IsabelleProcess (located in Isabelle/lib/classes) 
25651  815 
provides general wrapper for managing an Isabelle process in a robust 
816 
fashion, with ``cooked'' output from stdin/stderr. 

817 

25855  818 
* Rudimentary Isabelle plugin for jEdit (see Isabelle/lib/jedit), 
819 
based on Isabelle/JVM process wrapper (see Isabelle/lib/classes). 

820 

27067  821 
* Removed obsolete THIS_IS_ISABELLE_BUILD feature. NB: the documented 
822 
way of changing the user's settings is via 

823 
ISABELLE_HOME_USER/etc/settings, which is a fully featured bash 

824 
script. 

825 

826 
* Multithreading.max_threads := 0 refers to the number of actual CPU 

827 
cores of the underlying machine, which is a good starting point for 

828 
optimal performance tuning. The corresponding usedir option M allows 

829 
"max" as an alias for "0". WARNING: does not work on certain versions 

830 
of Mac OS (with Poly/ML 5.1). 

831 

832 
* isabelleprocess: nonML sessions are run with "nice", to reduce the 

833 
adverse effect of Isabelle flooding interactive frontends (notably 

834 
ProofGeneral / XEmacs). 

835 

25626
3000965b1fdf
* isatool tty runs Isabelle process with plain tty interaction;
wenzelm
parents:
25609
diff
changeset

836 

25464
0ca80ce89001
moved new NEWS from Isabelle2007 to this Isabelle version'';
wenzelm
parents:
25459
diff
changeset

837 

25429  838 
New in Isabelle2007 (November 2007) 
839 
 

17754
58a306d9f736
* Command 'find_theorems': support * wildcard in name: criterion.
wenzelm
parents:
17725
diff
changeset

840 

58a306d9f736
* Command 'find_theorems': support * wildcard in name: criterion.
wenzelm
parents:
17725
diff
changeset

841 
*** General *** 
58a306d9f736
* Command 'find_theorems': support * wildcard in name: criterion.
wenzelm
parents:
17725
diff
changeset

842 

22826  843 
* More uniform information about legacy features, notably a 
844 
warning/error of "Legacy feature: ...", depending on the state of the 

23367  845 
tolerate_legacy_features flag (default true). FUTURE INCOMPATIBILITY: 
846 
legacy features will disappear eventually. 

22826  847 

17918
93e26302733e
* Theory syntax: discontinued nonIsar format and old Isar headers;
wenzelm
parents:
17890
diff
changeset

848 
* Theory syntax: the header format ``theory A = B + C:'' has been 
93e26302733e
* Theory syntax: discontinued nonIsar format and old Isar headers;
wenzelm
parents:
17890
diff
changeset

849 
discontinued in favour of ``theory A imports B C begin''. Use isatool 
93e26302733e
* Theory syntax: discontinued nonIsar format and old Isar headers;
wenzelm
parents:
17890
diff
changeset

850 
fixheaders to convert existing theory files. INCOMPATIBILITY. 
93e26302733e
* Theory syntax: discontinued nonIsar format and old Isar headers;
wenzelm
parents:
17890
diff
changeset

851 

93e26302733e
* Theory syntax: discontinued nonIsar format and old Isar headers;
wenzelm
parents:
17890
diff
changeset

852 
* Theory syntax: the old nonIsar theory file format has been 
93e26302733e
* Theory syntax: discontinued nonIsar format and old Isar headers;
wenzelm
parents:
17890
diff
changeset

853 
discontinued altogether. Note that ML proof scripts may still be used 
93e26302733e
* Theory syntax: discontinued nonIsar format and old Isar headers;
wenzelm
parents:
17890
diff
changeset

854 
with Isar theories; migration is usually quite simple with the ML 
93e26302733e
* Theory syntax: discontinued nonIsar format and old Isar headers;
wenzelm
parents:
17890
diff
changeset

855 
function use_legacy_bindings. INCOMPATIBILITY. 
93e26302733e
* Theory syntax: discontinued nonIsar format and old Isar headers;
wenzelm
parents:
17890
diff
changeset

856 

22871  857 
* Theory syntax: some popular names (e.g. 'class', 'declaration', 
858 
'fun', 'help', 'if') are now keywords. INCOMPATIBILITY, use double 

859 
quotes. 

19814
faa698d46686
* Theory syntax: some popular names (e.g. "class", "if") are now keywords.
wenzelm
parents:
19783
diff
changeset

860 

23888
babe337cce2d
* Theory loader: be more serious about observing the static theory header specifications;
wenzelm
parents:
23881
diff
changeset

861 
* Theory loader: be more serious about observing the static theory 
babe337cce2d
* Theory loader: be more serious about observing the static theory header specifications;
wenzelm
parents:
23881
diff
changeset

862 
header specifications (including optional directories), but not the 
24172
06e42cf7df4e
theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents:
24110
diff
changeset

863 
accidental file locations of previously successful loads. The strict 
06e42cf7df4e
theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents:
24110
diff
changeset

864 
update policy of former update_thy is now already performed by 
06e42cf7df4e
theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents:
24110
diff
changeset

865 
use_thy, so the former has been removed; use_thys updates several 
06e42cf7df4e
theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents:
24110
diff
changeset

866 
theories simultaneously, just as 'imports' within a theory header 
06e42cf7df4e
theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents:
24110
diff
changeset

867 
specification, but without merging the results. Potential 
06e42cf7df4e
theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents:
24110
diff
changeset

868 
INCOMPATIBILITY: may need to refine theory headers and commands 
06e42cf7df4e
theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents:
24110
diff
changeset

869 
ROOT.ML which depend on load order. 
23888
babe337cce2d
* Theory loader: be more serious about observing the static theory header specifications;
wenzelm
parents:
23881
diff
changeset

870 

babe337cce2d
* Theory loader: be more serious about observing the static theory header specifications;
wenzelm
parents:
23881
diff
changeset

871 
* Theory loader: optional support for contentbased file 
babe337cce2d
* Theory loader: be more serious about observing the static theory header specifications;
wenzelm
parents:
23881
diff
changeset

872 
identification, instead of the traditional scheme of full physical 
23889  873 
path plus date stamp; configured by the ISABELLE_FILE_IDENT setting 
23888
babe337cce2d
* Theory loader: be more serious about observing the static theory header specifications;
wenzelm
parents:
23881
diff
changeset

874 
(cf. the system manual). The new scheme allows to work with 
babe337cce2d
* Theory loader: be more serious about observing the static theory header specifications;
wenzelm
parents:
23881
diff
changeset

875 
nonfinished theories in persistent session images, such that source 
babe337cce2d
* Theory loader: be more serious about observing the static theory header specifications;
wenzelm
parents:
23881
diff
changeset

876 
files may be moved later on without requiring reloads. 
babe337cce2d
* Theory loader: be more serious about observing the static theory header specifications;
wenzelm
parents:
23881
diff
changeset

877 

24187
8bdf5ca5871f
* Theory loader: oldstyle ML proof scripts are considered a legacy feature;
wenzelm
parents:
24172
diff
changeset

878 
* Theory loader: oldstyle ML proof scripts being *attached* to a thy 
8bdf5ca5871f
* Theory loader: oldstyle ML proof scripts are considered a legacy feature;
wenzelm
parents:
24172
diff
changeset

879 
file (with the same base name as the theory) are considered a legacy 
24800  880 
feature, which will disappear eventually. Even now, the theory loader 
881 
no longer maintains dependencies on such files. 

882 

883 
* Syntax: the scope for resolving ambiguities via typeinference is 

884 
now limited to individual terms, instead of whole simultaneous 

24234
4714e04fb8e9
* Syntax: scope for resolving ambiguities via typeinference is now limited to individual terms;
wenzelm
parents:
24213
diff
changeset

885 
specifications as before. This greatly reduces the complexity of the 
4714e04fb8e9
* Syntax: scope for resolving ambiguities via typeinference is now limited to individual terms;
wenzelm
parents:
24213
diff
changeset

886 
syntax module and improves flexibility by separating parsing and 
4714e04fb8e9
* Syntax: scope for resolving ambiguities via typeinference is now limited to individual terms;
wenzelm
parents:
24213
diff
changeset

887 
typechecking. INCOMPATIBILITY: additional typeconstraints (explicit 
4714e04fb8e9
* Syntax: scope for resolving ambiguities via typeinference is now limited to individual terms;
wenzelm
parents:
24213
diff
changeset

888 
'fixes' etc.) are required in rare situations. 
4714e04fb8e9
* Syntax: scope for resolving ambiguities via typeinference is now limited to individual terms;
wenzelm
parents:
24213
diff
changeset

889 

25034  890 
* Syntax: constants introduced by newstyle packages ('definition', 
891 
'abbreviation' etc.) are passed through the syntax module in 

892 
``authentic mode''. This means that associated mixfix annotations 

893 
really stick to such constants, independently of potential name space 

894 
ambiguities introduced later on. INCOMPATIBILITY: constants in parse 

895 
trees are represented slightly differently, may need to adapt syntax 

896 
translations accordingly. Use CONST marker in 'translations' and 

897 
@{const_syntax} antiquotation in 'parse_translation' etc. 

898 

17981
2602be0d99ae
* Legacy goal package: reduced interface to the bare minimum required to keep existing proof scripts running.
wenzelm
parents:
17918
diff
changeset

899 
* Legacy goal package: reduced interface to the bare minimum required 
2602be0d99ae
* Legacy goal package: reduced interface to the bare minimum required to keep existing proof scripts running.
wenzelm
parents:
17918
diff
changeset

900 
to keep existing proof scripts running. Most other userlevel 
2602be0d99ae
* Legacy goal package: reduced interface to the bare minimum required to keep existing proof scripts running.
wenzelm
parents:
17918
diff
changeset

901 
functions are now part of the OldGoals structure, which is *not* open 
2602be0d99ae
* Legacy goal package: reduced interface to the bare minimum required to keep existing proof scripts running.
wenzelm
parents:
17918
diff
changeset

902 
by default (consider isatool expandshort before open OldGoals). 
2602be0d99ae
* Legacy goal package: reduced interface to the bare minimum required to keep existing proof scripts running.
wenzelm
parents:
17918
diff
changeset

903 
Removed top_sg, prin, printyp, pprint_term/typ altogether, because 
2602be0d99ae
* Legacy goal package: reduced interface to the bare minimum required to keep existing proof scripts running.
wenzelm
parents:
17918
diff
changeset

904 
these tend to cause confusion about the actual goal (!) context being 
2602be0d99ae
* Legacy goal package: reduced interface to the bare minimum required to keep existing proof scripts running.
wenzelm
parents:
17918
diff
changeset

905 
used here, which is not necessarily the same as the_context(). 
17918
93e26302733e
* Theory syntax: discontinued nonIsar format and old Isar headers;
wenzelm
parents:
17890
diff
changeset

906 

23379
d0e3f790bd73
updated 'find_theorems'  moved ProofGeneral specifics to ProofGeneral/CHANGES;
wenzelm
parents:
23377
diff
changeset

907 
* Command 'find_theorems': supports "*" wildcard in "name:" 
d0e3f790bd73
updated 'find_theorems'  moved ProofGeneral specifics to ProofGeneral/CHANGES;
wenzelm
parents:
23377
diff
changeset

908 
criterion; "with_dups" option. Certain ProofGeneral versions might 
d0e3f790bd73
updated 'find_theorems'  moved ProofGeneral specifics to ProofGeneral/CHANGES;
wenzelm
parents:
23377
diff
changeset

909 
support a specific search form (see ProofGeneral/CHANGES). 
22965  910 

20370  911 
* The ``prems limit'' option (cf. ProofContext.prems_limit) is now 1 
912 
by default, which means that "prems" (and also "fixed variables") are 

913 
suppressed from proof state output. Note that the ProofGeneral 

914 
settings mechanism allows to change and save options persistently, but 

915 
older versions of Isabelle will fail to start up if a negative prems 

916 
limit is imposed. 

917 

21308
73883a528b26
* Local theory targets ``context/locale/class ... begin'' followed by ``end''.
wenzelm
parents:
21265
diff
changeset

918 
* Local theory targets may be specified by nonnested blocks of 
73883a528b26
* Local theory targets ``context/locale/class ... begin'' followed by ``end''.
wenzelm
parents:
21265
diff
changeset

919 
``context/locale/class ... begin'' followed by ``end''. The body may 
73883a528b26
* Local theory targets ``context/locale/class ... begin'' followed by ``end''.
wenzelm
parents:
21265
diff
changeset

920 
contain definitions, theorems etc., including any derived mechanism 
73883a528b26
* Local theory targets ``context/locale/class ... begin'' followed by ``end''.
wenzelm
parents:
21265
diff
changeset

921 
that has been implemented on top of these primitives. This concept 
73883a528b26
* Local theory targets ``context/locale/class ... begin'' followed by ``end''.
wenzelm
parents:
21265
diff
changeset

922 
generalizes the existing ``theorem (in ...)'' towards more versatility 
73883a528b26
* Local theory targets ``context/locale/class ... begin'' followed by ``end''.
wenzelm
parents:
21265
diff
changeset

923 
and scalability. 
73883a528b26
* Local theory targets ``context/locale/class ... begin'' followed by ``end''.
wenzelm
parents:
21265
diff
changeset

924 

21960
0574f192b78a
* Proof General: proper undo of final 'end'; discontinued Isabelle/classic;
wenzelm
parents:
21896
diff
changeset

925 
* Proof General interface: proper undo of final 'end' command; 
0574f192b78a
* Proof General: proper undo of final 'end'; discontinued Isabelle/classic;
wenzelm
parents:
21896
diff
changeset

926 
discontinued Isabelle/classic mode (ML proof scripts). 
0574f192b78a
* Proof General: proper undo of final 'end'; discontinued Isabelle/classic;
wenzelm
parents:
21896
diff
changeset

927 

17754
58a306d9f736
* Command 'find_theorems': support * wildcard in name: criterion.
wenzelm
parents:
17725
diff
changeset

928 

17865  929 
*** Document preparation *** 
930 

21717  931 
* Added antiquotation @{theory name} which prints the given name, 
932 
after checking that it refers to a valid ancestor theory in the 

933 
current context. 

21339  934 

17869  935 
* Added antiquotations @{ML_type text} and @{ML_struct text} which 
936 
check the given source text as ML type/structure, printing verbatim. 

17865  937 

21717  938 
* Added antiquotation @{abbrev "c args"} which prints the abbreviation 
939 
"c args == rhs" given in the current context. (Any number of 

21735  940 
arguments may be given on the LHS.) 
21717  941 

942 

17779  943 
*** Pure *** 
944 

24800  945 
* The 'class' package offers a combination of axclass and locale to 
25129  946 
achieve Haskelllike type classes in Isabelle. Definitions and 
947 
theorems within a class context produce both relative results (with 

948 
implicit parameters according to the locale context), and polymorphic 

949 
constants with qualified polymorphism (according to the class 

950 
context). Within the body context of a 'class' target, a separate 

951 
syntax layer ("user space type system") takes care of converting 

952 
between global polymorphic consts and internal locale representation. 

25177  953 
See src/HOL/ex/Classpackage.thy for examples (as well as main HOL). 
25184  954 
"isatool doc classes" provides a tutorial. 
20807  955 

25199  956 
* Generic code generator framework allows to generate executable 
24800  957 
code for ML and Haskell (including Isabelle classes). A short usage 
958 
sketch: 

20188
8b22026445af
added notes on class_package.ML and codegen_package.ML
haftmann
parents:
20169
diff
changeset

959 

8b22026445af
added notes on class_package.ML and codegen_package.ML
haftmann
parents:
20169
diff
changeset

960 
internal compilation: 
25199  961 
export_code <list of constants (term syntax)> in SML 
20453
855f07fabd76
final syntax for some Isar code generator keywords
haftmann
parents:
20375
diff
changeset

962 
writing SML code to a file: 
25199  963 
export_code <list of constants (term syntax)> in SML <filename> 
22735  964 
writing OCaml code to a file: 
25199  965 
export_code <list of constants (term syntax)> in OCaml <filename> 
20188
8b22026445af
added notes on class_package.ML and codegen_package.ML
haftmann
parents:
20169
diff
changeset

966 
writing Haskell code to a bunch of files: 
25199  967 
export_code <list of constants (term syntax)> in Haskell <filename> 
968 

969 
evaluating closed propositions to True/False using code generation: 

25184  970 
method ``eval'' 
971 

972 
Reasonable default setup of framework in HOL. 

20453
855f07fabd76
final syntax for some Isar code generator keywords
haftmann
parents:
20375
diff
changeset

973 

855f07fabd76
final syntax for some Isar code generator keywords
haftmann
parents:
20375
diff
changeset

974 
Theorem attributs for selecting and transforming function equations theorems: 
855f07fabd76
final syntax for some Isar code generator keywords
haftmann
parents:
20375
diff
changeset

975 

22845  976 
[code fun]: select a theorem as function equation for a specific constant 
977 
[code fun del]: deselect a theorem as function equation for a specific constant 

978 
[code inline]: select an equation theorem for unfolding (inlining) in place 

979 
[code inline del]: deselect an equation theorem for unfolding (inlining) in place 

20453
855f07fabd76
final syntax for some Isar code generator keywords
haftmann
parents:
20375
diff
changeset

980 

22735  981 
Userdefined serializations (target in {SML, OCaml, Haskell}): 
20453
855f07fabd76
final syntax for some Isar code generator keywords
haftmann
parents:
20375
diff
changeset

982 

855f07fabd76
final syntax for some Isar code generator keywords
haftmann
parents:
20375
diff
changeset

983 
code_const <andlist of constants (term syntax)> 
855f07fabd76
final syntax for some Isar code generator keywords
haftmann
parents:
20375
diff
changeset

984 
{(target) <andlist of const target syntax>}+ 
855f07fabd76
final syntax for some Isar code generator keywords
haftmann
parents:
20375
diff
changeset

985 

855f07fabd76
final syntax for some Isar code generator keywords
haftmann
parents:
20375
diff
changeset

986 
code_type <andlist of type constructors> 
855f07fabd76
final syntax for some Isar code generator keywords
haftmann
parents:
20375
diff
changeset

987 
{(target) <andlist of type target syntax>}+ 
855f07fabd76
final syntax for some Isar code generator keywords
haftmann
parents:
20375
diff
changeset

988 

855f07fabd76
final syntax for some Isar code generator keywords
haftmann
parents:
20375
diff
changeset

989 
code_instance <andlist of instances> 
855f07fabd76
final syntax for some Isar code generator keywords
haftmann
parents:
20375
diff
changeset

990 
{(target)}+ 
855f07fabd76
final syntax for some Isar code generator keywords
haftmann
parents:
20375
diff
changeset

991 
where instance ::= <type constructor> :: <class> 
855f07fabd76
final syntax for some Isar code generator keywords
haftmann
parents:
20375
diff
changeset

992 

855f07fabd76
final syntax for some Isar code generator keywords
haftmann
parents:
20375
diff
changeset

993 
code_class <and_list of classes> 
855f07fabd76
final syntax for some Isar code generator keywords
haftmann
parents:
20375
diff
changeset

994 
{(target) <andlist of class target syntax>}+ 
855f07fabd76
final syntax for some Isar code generator keywords
haftmann
parents:
20375
diff
changeset

995 
where class target syntax ::= <class name> {where {<classop> == <target syntax>}+}? 
855f07fabd76
final syntax for some Isar code generator keywords
haftmann
parents:
20375
diff
changeset

996 

25199  997 
code_instance and code_class only are effective to target Haskell. 
22735  998 

25177  999 
For example usage see src/HOL/ex/Codegenerator.thy and 
1000 
src/HOL/ex/Codegenerator_Pretty.thy. A separate tutorial on code 

24800  1001 
generation from Isabelle/HOL theories is available via "isatool doc 
1002 
codegen". 

20188
8b22026445af
added notes on class_package.ML and codegen_package.ML
haftmann
parents:
20169
diff
changeset

1003 

25129  1004 
* Code generator: consts in 'consts_code' Isar commands are now 
1005 
referred to by usual term syntax (including optional type 

1006 
annotations). 

1007 

19254  1008 
* Command 'no_translations' removes translation rules from theory 
1009 
syntax. 

1010 

19625
285771cec083
* Pure: overloaded definitions are now actually checked for acyclic dependencies;
wenzelm
parents:
19587
diff
changeset

1011 
* Overloaded definitions are now actually checked for acyclic 
19714  1012 
dependencies. The overloading scheme is slightly more general than 
1013 
that of Haskell98, although Isabelle does not demand an exact 

1014 
correspondence to type class and instance declarations. 

1015 
INCOMPATIBILITY, use ``defs (unchecked overloaded)'' to admit more 

1016 
exotic versions of overloading  at the discretion of the user! 

19711  1017 

1018 
Polymorphic constants are represented via type arguments, i.e. the 

1019 
instantiation that matches an instance against the most general 

1020 
declaration given in the signature. For example, with the declaration 

1021 
c :: 'a => 'a => 'a, an instance c :: nat => nat => nat is represented 

1022 
as c(nat). Overloading is essentially simultaneous structural 

1023 
recursion over such type arguments. Incomplete specification patterns 

19714  1024 
impose global constraints on all occurrences, e.g. c('a * 'a) on the 
19715  1025 
LHS means that more general c('a * 'b) will be disallowed on any RHS. 
19714  1026 
Command 'print_theory' outputs the normalized system of recursive 
1027 
equations, see section "definitions". 

19625
285771cec083
* Pure: overloaded definitions are now actually checked for acyclic dependencies;
wenzelm
parents:
19587
diff
changeset

1028 

24086  1029 
* Configuration options are maintained within the theory or proof 
1030 
context (with name and type bool/int/string), providing a very simple 

1031 
interface to a poorman's version of general context data. Tools may 

24110
4ab3084e311c
tuned config options: eliminated separate attribute "option";
wenzelm
parents:
24086
diff
changeset

1032 
declare options in ML (e.g. using Attrib.config_int) and then refer to 
4ab3084e311c
tuned config options: eliminated separate attribute "option";
wenzelm
parents:
24086
diff
changeset

1033 
these values using Config.get etc. Users may change options via an 
4ab3084e311c
tuned config options: eliminated separate attribute "option";
wenzelm
parents:
24086
diff
changeset

1034 
associated attribute of the same name. This form of context 
4ab3084e311c
tuned config options: eliminated separate attribute "option";
wenzelm
parents:
24086
diff
changeset

1035 
declaration works particularly well with commands 'declare' or 
4ab3084e311c
tuned config options: eliminated separate attribute "option";
wenzelm
parents:
24086
diff
changeset

1036 
'using', for example ``declare [[foo = 42]]''. Thus it has become 
4ab3084e311c
tuned config options: eliminated separate attribute "option";
wenzelm
parents:
24086
diff
changeset

1037 
very easy to avoid global references, which would not observe Isar 
4ab3084e311c
tuned config options: eliminated separate attribute "option";
wenzelm
parents:
24086
diff
changeset

1038 
toplevel undo/redo and fail to work with multithreading. 
24086  1039 

24172
06e42cf7df4e
theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents:
24110
diff
changeset

1040 
Various global ML references of Pure and HOL have been turned into 
06e42cf7df4e
theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents:
24110
diff
changeset

1041 
configuration options: 
06e42cf7df4e
theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents:
24110
diff
changeset

1042 

06e42cf7df4e
theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents:
24110
diff
changeset

1043 
Unify.search_bound unify_search_bound 
06e42cf7df4e
theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents:
24110
diff
changeset

1044 
Unify.trace_bound unify_trace_bound 
06e42cf7df4e
theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents:
24110
diff
changeset

1045 
Unify.trace_simp unify_trace_simp 
06e42cf7df4e
theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents:
24110
diff
changeset

1046 
Unify.trace_types unify_trace_types 
06e42cf7df4e
theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents:
24110
diff
changeset

1047 
Simplifier.simp_depth_limit simp_depth_limit 
06e42cf7df4e
theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents:
24110
diff
changeset

1048 
Blast.depth_limit blast_depth_limit 
06e42cf7df4e
theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents:
24110
diff
changeset

1049 
DatatypeProp.dtK datatype_distinctness_limit 
06e42cf7df4e
theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents:
24110
diff
changeset

1050 
fast_arith_neq_limit fast_arith_neq_limit 
06e42cf7df4e
theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents:
24110
diff
changeset

1051 
fast_arith_split_limit fast_arith_split_limit 
06e42cf7df4e
theory loader: added use_thys, removed obsolete update_thy;
wenzelm
parents:
24110
diff
changeset

1052 

24086  1053 
* Named collections of theorems may be easily installed as context 
24800  1054 
data using the functor NamedThmsFun (see also 
24086  1055 
src/Pure/Tools/named_thms.ML). The user may add or delete facts via 
24110
4ab3084e311c
tuned config options: eliminated separate attribute "option";
wenzelm
parents:
24086
diff
changeset

1056 
attributes; there is also a toplevel print command. This facility is 
4ab3084e311c
tuned config options: eliminated separate attribute "option";
wenzelm
parents:
24086
diff
changeset

1057 
just a common case of general context data, which is the preferred way 
4ab3084e311c
tuned config options: eliminated separate attribute "option";
wenzelm
parents:
24086
diff
changeset

1058 
for anything more complex than just a list of facts in canonical 
4ab3084e311c
tuned config options: eliminated separate attribute "option";
wenzelm
parents:
24086
diff
changeset

1059 
order. 
24086  1060 

24032  1061 
* Isar: command 'declaration' augments a local theory by generic 
1062 
declaration functions written in ML. This enables arbitrary content 

1063 
being added to the context, depending on a morphism that tells the 

1064 
difference of the original declaration context wrt. the application 

1065 
context encountered later on. 

1066 

1067 
* Isar: proper interfaces for simplification procedures. Command 

1068 
'simproc_setup' declares named simprocs (with match patterns, and body 

1069 
text in ML). Attribute "simproc" adds/deletes simprocs in the current 

1070 
context. ML antiquotation @{simproc name} retrieves named simprocs. 

1071 

1072 
* Isar: an extra pair of brackets around attribute declarations 

1073 
abbreviates a theorem reference involving an internal dummy fact, 

1074 
which will be ignored later  only the effect of the attribute on 

1075 
the background context will persist. This form of inplace 

1076 
declarations is particularly useful with commands like 'declare' and 

1077 
'using', for example ``have A using [[simproc a]] by simp''. 

1078 

23369
227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
wenzelm
parents:
23367
diff
changeset

1079 
* Isar: method "assumption" (and implicit closing of subproofs) now 
227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
wenzelm
parents:
23367
diff
changeset

1080 
takes simple nonatomic goal assumptions into account: after applying 
227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
wenzelm
parents:
23367
diff
changeset

1081 
an assumption as a rule the resulting subgoals are solved by atomic 
227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
wenzelm
parents:
23367
diff
changeset

1082 
assumption steps. This is particularly useful to finish 'obtain' 
227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
wenzelm
parents:
23367
diff
changeset

1083 
goals, such as "!!x. (!!x. P x ==> thesis) ==> P x ==> thesis", 
227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
wenzelm
parents:
23367
diff
changeset

1084 
without referring to the original premise "!!x. P x ==> thesis" in the 
227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
wenzelm
parents:
23367
diff
changeset

1085 
Isar proof context. POTENTIAL INCOMPATIBILITY: method "assumption" is 
227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
wenzelm
parents:
23367
diff
changeset

1086 
more permissive. 
227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
wenzelm
parents:
23367
diff
changeset

1087 

227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
wenzelm
parents:
23367
diff
changeset

1088 
* Isar: implicit use of prems from the Isar proof context is 
227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
wenzelm
parents:
23367
diff
changeset

1089 
considered a legacy feature. Common applications like ``have A .'' 
227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
wenzelm
parents:
23367
diff
changeset

1090 
may be replaced by ``have A by fact'' or ``note `A`''. In general, 
227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
wenzelm
parents:
23367
diff
changeset

1091 
referencing facts explicitly here improves readability and 
227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
wenzelm
parents:
23367
diff
changeset

1092 
maintainability of proof texts. 
227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
wenzelm
parents:
23367
diff
changeset

1093 

17865  1094 
* Isar: improper proof element 'guess' is like 'obtain', but derives 
1095 
the obtained context from the course of reasoning! For example: 

1096 

1097 
assume "EX x y. A x & B y"  "any previous fact" 

1098 
then guess x and y by clarify 

1099 

1100 
This technique is potentially adventurous, depending on the facts and 

1101 
proof tools being involved here. 

1102 

18020  1103 
* Isar: known facts from the proof context may be specified as literal 
1104 
propositions, using ASCII backquote syntax. This works wherever 

1105 
named facts used to be allowed so far, in proof commands, proof 

1106 
methods, attributes etc. Literal facts are retrieved from the context 

1107 
according to unification of type and term parameters. For example, 

1108 
provided that "A" and "A ==> B" and "!!x. P x ==> Q x" are known 

1109 
theorems in the current context, then these are valid literal facts: 

1110 
`A` and `A ==> B` and `!!x. P x ==> Q x" as well as `P a ==> Q a` etc. 

1111 

1112 
There is also a proof method "fact" which does the same composition 

18044  1113 
for explicit goal states, e.g. the following proof texts coincide with 
1114 
certain special cases of literal facts: 

18020  1115 

1116 
have "A" by fact == note `A` 

1117 
have "A ==> B" by fact == note `A ==> B` 

1118 
have "!!x. P x ==> Q x" by fact == note `!!x. P x ==> Q x` 

1119 
have "P a ==> Q a" by fact == note `P a ==> Q a` 

1120 

20118
0c1ec587a5a8
* Isar: ":" (colon) is no longer a symbolic identifier character;
wenzelm
parents:
20090
diff
changeset

1121 
* Isar: ":" (colon) is no longer a symbolic identifier character in 
0c1ec587a5a8
* Isar: ":" (colon) is no longer a symbolic identifier character;
wenzelm
parents:
20090
diff
changeset

1122 
outer syntax. Thus symbolic identifiers may be used without 
0c1ec587a5a8
* Isar: ":" (colon) is no longer a symbolic identifier character;
wenzelm
parents:
20090
diff
changeset

1123 
additional white space in declarations like this: ``assume *: A''. 
0c1ec587a5a8
* Isar: ":" (colon) is no longer a symbolic identifier character;
wenzelm
parents:
20090
diff
changeset

1124 

20013  1125 
* Isar: 'print_facts' prints all local facts of the current context, 
1126 
both named and unnamed ones. 

1127 

18308  1128 
* Isar: 'def' now admits simultaneous definitions, e.g.: 
1129 

1130 
def x == "t" and y == "u" 

1131 

18540  1132 
* Isar: added command 'unfolding', which is structurally similar to 
1133 
'using', but affects both the goal state and facts by unfolding given 

18815
cb778c0ce1b5
Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents:
18738
diff
changeset

1134 
rewrite rules. Thus many occurrences of the 'unfold' method or 
18540  1135 
'unfolded' attribute may be replaced by firstclass proof text. 
1136 

18815
cb778c0ce1b5
Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents:
18738
diff
changeset

1137 
* Isar: methods 'unfold' / 'fold', attributes 'unfolded' / 'folded', 
cb778c0ce1b5
Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents:
18738
diff
changeset

1138 
and command 'unfolding' now all support objectlevel equalities 
cb778c0ce1b5
Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents:
18738
diff
changeset

1139 
(potentially conditional). The underlying notion of rewrite rule is 
cb778c0ce1b5
Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents:
18738
diff
changeset

1140 
analogous to the 'rule_format' attribute, but *not* that of the 
cb778c0ce1b5
Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents:
18738
diff
changeset

1141 
Simplifier (which is usually more generous). 
cb778c0ce1b5
Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents:
18738
diff
changeset

1142 

24238  1143 
* Isar: the new attribute [rotated n] (default n = 1) rotates the 
1144 
premises of a theorem by n. Useful in conjunction with drule. 

1145 

19220  1146 
* Isar: the goal restriction operator [N] (default N = 1) evaluates a 
1147 
method expression within a sandbox consisting of the first N 

19240  1148 
subgoals, which need to exist. For example, ``simp_all [3]'' 
1149 
simplifies the first three subgoals, while (rule foo, simp_all)[] 

1150 
simplifies all new goals that emerge from applying rule foo to the 

1151 
originally first one. 

19220  1152 

19814
faa698d46686
* Theory syntax: some popular names (e.g. "class", "if") are now keywords.
wenzelm
parents:
19783
diff
changeset

1153 
* Isar: schematic goals are no longer restricted to higherorder 
faa698d46686
* Theory syntax: some popular names (e.g. "class", "if") are now keywords.
wenzelm
parents:
19783
diff
changeset

1154 
patterns; e.g. ``lemma "?P(?x)" by (rule TrueI)'' now works as 
faa698d46686
* Theory syntax: some popular names (e.g. "class", "if") are now keywords.
wenzelm
parents:
19783
diff
changeset

1155 
expected. 
faa698d46686
* Theory syntax: some popular names (e.g. "class", "if") are now keywords.
wenzelm
parents:
19783
diff
changeset

1156 

18901  1157 
* Isar: the conclusion of a long theorem statement is now either 
1158 
'shows' (a simultaneous conjunction, as before), or 'obtains' 

1159 
(essentially a disjunction of cases with local parameters and 

1160 
assumptions). The latter allows to express general elimination rules 

18910  1161 
adequately; in this notation common elimination rules look like this: 
18901  1162 

1163 
lemma exE:  "EX x. P x ==> (!!x. P x ==> thesis) ==> thesis" 

1164 
assumes "EX x. P x" 

1165 
obtains x where "P x" 

1166 

1167 
lemma conjE:  "A & B ==> (A ==> B ==> thesis) ==> thesis" 

1168 
assumes "A & B" 

1169 
obtains A and B 

1170 

1171 
lemma disjE:  "A  B ==> (A ==> thesis) ==> (B ==> thesis) ==> thesis" 

1172 
assumes "A  B" 

1173 
obtains 

1174 
A 

1175 
 B 

1176 

18910  1177 
The subsequent classical rules even refer to the formal "thesis" 
18901  1178 
explicitly: 
1179 

1180 
lemma classical:  "(~ thesis ==> thesis) ==> thesis" 

1181 
obtains "~ thesis" 

1182 

18910  1183 
lemma Peirce's_Law:  "((thesis ==> something) ==> thesis) ==> thesis" 
1184 
obtains "thesis ==> something" 

18901  1185 

1186 
The actual proof of an 'obtains' statement is analogous to that of the 

18910  1187 
Isar proof element 'obtain', only that there may be several cases. 
1188 
Optional case names may be specified in parentheses; these will be 

1189 
available both in the present proof and as annotations in the 

1190 
resulting rule, for later use with the 'cases' method (cf. attribute 

1191 
case_names). 

18901  1192 

21447
379f130843f7
* Isar: the assumptions of a long theorem statement are available as assms;
wenzelm
parents:
21406
diff
changeset

1193 
* Isar: the assumptions of a long theorem statement are available as 
379f130843f7
* Isar: the assumptions of a long theorem statement are available as assms;
wenzelm
parents:
21406
diff
changeset

1194 
"assms" fact in the proof context. This is more appropriate than the 
379f130843f7
* Isar: the assumptions of a long theorem statement are available as assms;
wenzelm
parents:
21406
diff
changeset

1195 
(historical) "prems", which refers to all assumptions of the current 
379f130843f7
* Isar: the assumptions of a long theorem statement are available as assms;
wenzelm
parents:
21406
diff
changeset

1196 
context, including those from the target locale, proof body etc. 
379f130843f7
* Isar: the assumptions of a long theorem statement are available as assms;
wenzelm
parents:
21406
diff
changeset

1197 

19263  1198 
* Isar: 'print_statement' prints theorems from the current theory or 
1199 
proof context in long statement form, according to the syntax of a 

1200 
toplevel lemma. 

1201 

18901  1202 
* Isar: 'obtain' takes an optional case name for the local context 
1203 
introduction rule (default "that"). 

1204 

19587  1205 
* Isar: removed obsolete 'concl is' patterns. INCOMPATIBILITY, use 
1206 
explicit (is "_ ==> ?foo") in the rare cases where this still happens 

1207 
to occur. 

1208 

19682
c8c301eb965a
* Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
parents:
19665
diff
changeset

1209 
* Pure: syntax "CONST name" produces a fully internalized constant 
c8c301eb965a
* Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
parents:
19665
diff
changeset

1210 
according to the current context. This is particularly useful for 
c8c301eb965a
* Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
parents:
19665
diff
changeset

1211 
syntax translations that should refer to internal constant 
c8c301eb965a
* Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
parents:
19665
diff
changeset

1212 
representations independently of name spaces. 
c8c301eb965a
* Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
parents:
19665
diff
changeset

1213 

21537
45b3a85ee548
* Pure: syntax constant for foo (binder) is called foo_binder;
wenzelm
parents:
21471
diff
changeset

1214 
* Pure: syntax constant for foo (binder "FOO ") is called "foo_binder" 
45b3a85ee548
* Pure: syntax constant for foo (binder) is called foo_binder;
wenzelm
parents:
21471
diff
changeset

1215 
instead of "FOO ". This allows multiple binder declarations to coexist 
45b3a85ee548
* Pure: syntax constant for foo (binder) is called foo_binder;
wenzelm
parents:
21471
diff
changeset

1216 
in the same context. INCOMPATIBILITY. 
45b3a85ee548
* Pure: syntax constant for foo (binder) is called foo_binder;
wenzelm
parents:
21471
diff
changeset

1217 

21209
dbb8decc36bc
'const_syntax' command: allow fixed variables, renamed to 'notation';
wenzelm
parents:
21200
diff
changeset

1218 
* Isar/locales: 'notation' provides a robust interface to the 'syntax' 
dbb8decc36bc
'const_syntax' command: allow fixed variables, renamed to 'notation';
wenzelm
parents:
21200
diff
changeset

1219 
primitive that also works in a locale context (both for constants and 
24950  1220 
fixed variables). Type declaration and internal syntactic representation 
1221 
of given constants retrieved from the context. Likewise, the 

1222 
'no_notation' command allows to remove given syntax annotations from the 

1223 
current context. 

19682
c8c301eb965a
* Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
parents:
19665
diff
changeset

1224 

19665  1225 
* Isar/locales: new derived specification elements 'axiomatization', 
1226 
'definition', 'abbreviation', which support typeinference, admit 

19083  1227 
objectlevel specifications (equality, equivalence). See also the 
1228 
isarref manual. Examples: 

19081
085b5badb8de
* Isar/locales: new derived specification elements 'definition', 'abbreviation', 'axiomatization';
wenzelm
parents:
19034
diff
changeset

1229 

19665  1230 
axiomatization 
21595  1231 
eq (infix "===" 50) where 
1232 
eq_refl: "x === x" and eq_subst: "x === y ==> P x ==> P y" 

1233 

1234 
definition "f x y = x + y + 1" 

1235 
definition g where "g x = f x x" 

19081
085b5badb8de
* Isar/locales: new derived specification elements 'definition', 'abbreviation', 'axiomatization';
wenzelm
parents:
19034
diff
changeset

1236 

19363  1237 
abbreviation 
21595  1238 
neq (infix "=!=" 50) where 
19363  1239 
"x =!= y == ~ (x === y)" 
19081
085b5badb8de
* Isar/locales: new derived specification elements 'definition', 'abbreviation', 'axiomatization';
wenzelm
parents:
19034
diff
changeset

1240 

19083  1241 
These specifications may be also used in a locale context. Then the 
1242 
constants being introduced depend on certain fixed parameters, and the 

1243 
constant name is qualified by the locale base name. An internal 

1244 
abbreviation takes care for convenient input and output, making the 

19088  1245 
parameters implicit and using the original short name. See also 
25177  1246 
src/HOL/ex/Abstract_NAT.thy for an example of deriving polymorphic 
19083  1247 
entities from a monomorphic theory. 
1248 

1249 
Presently, abbreviations are only available 'in' a target locale, but 

19363  1250 
not inherited by general import expressions. Also note that 
1251 
'abbreviation' may be used as a typesafe replacement for 'syntax' + 

24735
3a55ee2cae70
* Pure/Isar: unified specification syntax admits type inference and dummy patterns;
wenzelm
parents:
24706
diff
changeset

1252 
'translations' in common applications. The "no_abbrevs" print mode 
3a55ee2cae70
* Pure/Isar: unified specification syntax admits type inference and dummy patterns;
wenzelm
parents:
24706
diff
changeset

1253 
prevents folding of abbreviations in term output. 
19084  1254 

19682
c8c301eb965a
* Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
parents:
19665
diff
changeset

1255 
Concrete syntax is attached to specified constants in internal form, 
c8c301eb965a
* Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
parents:
19665
diff
changeset

1256 
independently of name spaces. The parse tree representation is 
21209
dbb8decc36bc
'const_syntax' command: allow fixed variables, renamed to 'notation';
wenzelm
parents:
21200
diff
changeset

1257 
slightly different  use 'notation' instead of raw 'syntax', and 
19682
c8c301eb965a
* Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
parents:
19665
diff
changeset

1258 
'translations' with explicit "CONST" markup to accommodate this. 
19665  1259 

24800  1260 
* Pure/Isar: unified syntax for newstyle specification mechanisms 
1261 
(e.g. 'definition', 'abbreviation', or 'inductive' in HOL) admits 

1262 
full type inference and dummy patterns ("_"). For example: 

24735
3a55ee2cae70
* Pure/Isar: unified specification syntax admits type inference and dummy patterns;
wenzelm
parents:
24706
diff
changeset

1263 

3a55ee2cae70
* Pure/Isar: unified specification syntax admits type inference and dummy patterns;
wenzelm
parents:
24706
diff
changeset

1264 
definition "K x _ = x" 
3a55ee2cae70
* Pure/Isar: unified specification syntax admits type inference and dummy patterns;
wenzelm
parents:
24706
diff
changeset

1265 

24738  1266 
inductive conj for A B 
1267 
where "A ==> B ==> conj A B" 

1268 

21735  1269 
* Pure: command 'print_abbrevs' prints all constant abbreviations of 
1270 
the current context. Print mode "no_abbrevs" prevents inversion of 

1271 
abbreviations on output. 

1272 

24800  1273 
* Isar/locales: improved parameter handling: use of locales "var" and 
1274 
"struct" no longer necessary;  parameter renamings are no longer 

1275 
required to be injective. For example, this allows to define 

1276 
endomorphisms as locale endom = homom mult mult h. 

19783  1277 

19931
fb32b43e7f80
Restructured locales with predicates: import is now an interpretation.
ballarin
parents:
19895
diff
changeset

1278 
* Isar/locales: changed the way locales with predicates are defined. 
fb32b43e7f80
Restructured locales with predicates: import is now an interpretation.
ballarin
parents:
19895
diff
changeset

1279 
Instead of accumulating the specification, the imported expression is 
22126  1280 
now an interpretation. INCOMPATIBILITY: different normal form of 
1281 
locale expressions. In particular, in interpretations of locales with 

1282 
predicates, goals repesenting already interpreted fragments are not 

1283 
removed automatically. Use methods `intro_locales' and 

1284 
`unfold_locales'; see below. 

1285 

1286 
* Isar/locales: new methods `intro_locales' and `unfold_locales' 

1287 
provide backward reasoning on locales predicates. The methods are 

1288 
aware of interpretations and discharge corresponding goals. 

1289 
`intro_locales' is less aggressive then `unfold_locales' and does not 

1290 
unfold predicates to assumptions. 

19931
fb32b43e7f80
Restructured locales with predicates: import is now an interpretation.
ballarin
parents:
19895
diff
changeset

1291 

fb32b43e7f80
Restructured locales with predicates: import is now an interpretation.
ballarin
parents:
19895
diff
changeset

1292 
* Isar/locales: the order in which locale fragments are accumulated 
22126  1293 
has changed. This enables to override declarations from fragments due 
1294 
to interpretations  for example, unwanted simp rules. 

19931
fb32b43e7f80
Restructured locales with predicates: import is now an interpretation.
ballarin
parents:
19895
diff
changeset

1295 

23920  1296 
* Isar/locales: interpretation in theories and proof contexts has been 
1297 
extended. One may now specify (and prove) equations, which are 

1298 
unfolded in interpreted theorems. This is useful for replacing 

1299 
defined concepts (constants depending on locale parameters) by 

1300 
concepts already existing in the target context. Example: 

1301 

1302 
interpretation partial_order ["op <= :: [int, int] => bool"] 

1303 
where "partial_order.less (op <=) (x::int) y = (x < y)" 

1304 

24800  1305 
Typically, the constant `partial_order.less' is created by a 
1306 
definition specification element in the context of locale 

1307 
partial_order. 

1308 

24859  1309 
* Method "induct": improved internal context management to support 
24800  1310 
local fixes and defines onthefly. Thus explicit metalevel 
1311 
connectives !! and ==> are rarely required anymore in inductive goals 

1312 
(using objectlogic connectives for this purpose has been long 

1313 
obsolete anyway). Common proof patterns are explained in 

25177  1314 
src/HOL/Induct/Common_Patterns.thy, see also 
1315 
src/HOL/Isar_examples/Puzzle.thy and src/HOL/Lambda for realistic 

1316 
examples. 

24606
7acbb982fc77
moved induct patterns to HOL/Induct/Common_Patterns.thy;
wenzelm
parents:
24507
diff
changeset

1317 

24859  1318 
* Method "induct": improved handling of simultaneous goals. Instead of 
24606
7acbb982fc77
moved induct patterns to HOL/Induct/Common_Patterns.thy;
wenzelm
parents:
24507
diff
changeset

1319 
introducing objectlevel conjunction, the statement is now split into 
7acbb982fc77
moved induct patterns to HOL/Induct/Common_Patterns.thy;
wenzelm
parents:
24507
diff
changeset

1320 
several conclusions, while the corresponding symbolic cases are nested 
7acbb982fc77
moved induct patterns to HOL/Induct/Common_Patterns.thy;
wenzelm
parents:
24507
diff
changeset

1321 
accordingly. INCOMPATIBILITY, proofs need to be structured explicitly, 
25177  1322 
see src/HOL/Induct/Common_Patterns.thy, for example. 
24606
7acbb982fc77
moved induct patterns to HOL/Induct/Common_Patterns.thy;
wenzelm
parents:
24507
diff
changeset

1323 

24859  1324 
* Method "induct": mutual induction rules are now specified as a list 
24800  1325 
of rule sharing the same induction cases. HOL packages usually provide 
24606
7acbb982fc77
moved induct patterns to HOL/Induct/Common_Patterns.thy;
wenzelm
parents:
24507
diff
changeset

1326 
foo_bar.inducts for mutually defined items foo and bar (e.g. inductive 
24859  1327 
predicates/sets or datatypes). INCOMPATIBILITY, users need to specify 
1328 
mutual induction rules differently, i.e. like this: 

18506
96260fb11449
* Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents:
18495
diff
changeset

1329 

96260fb11449
* Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents:
18495
diff
changeset

1330 
(induct rule: foo_bar.inducts) 
96260fb11449
* Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents:
18495
diff
changeset

1331 
(induct set: foo bar) 
24859  1332 
(induct pred: foo bar) 
18506
96260fb11449
* Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents:
18495
diff
changeset

1333 
(induct type: foo bar) 
96260fb11449
* Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents:
18495
diff
changeset

1334 

96260fb11449
* Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents:
18495
diff
changeset

1335 
The ML function ProjectRule.projections turns oldstyle rules into the 
96260fb11449
* Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents:
18495
diff
changeset

1336 
new format. 
96260fb11449
* Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents:
18495
diff
changeset

1337 

24859  1338 
* Method "coinduct": dual of induction, see 
18399  1339 
src/HOL/Library/Coinductive_List.thy for various examples. 
1340 

24859  1341 
* Method "cases", "induct", "coinduct": the ``(open)'' option is 
1342 
considered a legacy feature. 

1343 

20919
dab803075c62
attribute "symmetric": standardized schematic variables;
wenzelm
parents:
20857
diff
changeset

1344 
* Attribute "symmetric" produces result with standardized schematic 
dab803075c62
attribute "symmetric": standardized schematic variables;
wenzelm
parents:
20857
diff
changeset

1345 
variables (index 0). Potential INCOMPATIBILITY. 
dab803075c62
attribute "symmetric": standardized schematic variables;
wenzelm
parents:
20857
diff
changeset

1346 

22126  1347 
* Simplifier: by default the simplifier trace only shows top level 
1348 
rewrites now. That is, trace_simp_depth_limit is set to 1 by 

1349 
default. Thus there is less danger of being flooded by the trace. The 

1350 
trace indicates where parts have been suppressed. 

18674  1351 

18536
ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

1352 
* Provers/classical: removed obsolete classical version of elim_format 
ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

1353 
attribute; classical elim/dest rules are now treated uniformly when 
ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

1354 
manipulating the claset. 
ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

1355 

18694  1356 
* Provers/classical: stricter checks to ensure that supplied intro, 
1357 
dest and elim rules are wellformed; dest and elim rules must have at 

1358 
least one premise. 

1359 

1360 
* Provers/classical: attributes dest/elim/intro take an optional 

18695  1361 
weight argument for the rule (just as the Pure versions). Weights are 
18696  1362 
ignored by automated tools, but determine the search order of single 
18694  1363 
rule steps. 
18557
60a0f9caa0a2
Provers/classical: stricter checks to ensure that supplied intro, dest and
paulson
parents:
18549
diff
changeset

1364 

18536
ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

1365 
* Syntax: input syntax now supports dummy variable binding "%_. b", 
ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

1366 
where the body does not mention the bound variable. Note that dummy 
ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

1367 
patterns implicitly depend on their context of bounds, which makes 
ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

1368 
"{_. _}" match any set comprehension as expected. Potential 
ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

1369 
INCOMPATIBILITY  parse translations need to cope with syntactic 
ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

1370 
constant "_idtdummy" in the binding position. 
ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

1371 

ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

1372 
* Syntax: removed obsolete syntactic constant "_K" and its associated 
ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

1373 
parse translation. INCOMPATIBILITY  use dummy abstraction instead, 
ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

1374 
for example "A > B" => "Pi A (%_. B)". 
17779  1375 

20582
ebd0e03c6a9b
* Pure: 'class_deps' command visualizes the subclass relation;
wenzelm
parents:
20503
diff
changeset

1376 
* Pure: 'class_deps' command visualizes the subclass relation, using 
ebd0e03c6a9b
* Pure: 'class_deps' command visualizes the subclass relation;
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the graph browser tool. 
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* Pure: 'class_deps' command visualizes the subclass relation;
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* Pure: 'print_theory' now suppresses certain internal declarations by 
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default; use '!' option for full details. 

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* Pure: 'print_theory' now suppresses entities with internal name;
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*** HOL *** 
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* Method "metis" proves goals by applying the Metis generalpurpose 
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resolution prover (see also http://gilith.com/software/metis/). 

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Examples are in the directory MetisExamples. WARNING: the 

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Isabelle/HOLMetis integration does not yet work properly with 

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multithreading. 

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* Command 'sledgehammer' invokes external automatic theorem provers as 

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background processes. It generates calls to the "metis" method if 

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misc 