author  nipkow 
Wed, 04 Aug 2004 11:25:08 +0200  
changeset 15106  e8cef6993701 
parent 15103  79846e8792eb 
child 15119  e5f167042c1d 
permissions  rwrr 
5363  1 
Isabelle NEWS  history userrelevant changes 
2 
============================================== 

2553  3 

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New in this Isabelle release 
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*** General *** 
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8 

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* Provers/quasi.ML: new transitivity reasoners for transitivity only 
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and quasi orders. 
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New prover for transitive and reflexivetransitive closure of relations.
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* Provers/trancl.ML: new transitivity reasoner for transitive and 
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reflexivetransitive closure of relations. 
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* Pure: considerably improved version of 'constdefs' command. Now 
14731  16 
performs automatic typeinference of declared constants; additional 
17 
support for local structure declarations (cf. locales and HOL 

18 
records), see also isarref manual. Potential INCOMPATIBILITY: need 

19 
to observe strictly sequential dependencies of definitions within a 

20 
single 'constdefs' section; moreover, the declared name needs to be 

21 
an identifier. If all fails, consider to fall back on 'consts' and 

22 
'defs' separately. 

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* Pure: improved indexed syntax and implicit structures. First of 
14731  25 
all, indexed syntax provides a notational device for subscripted 
26 
application, using the new syntax \<^bsub>term\<^esub> for arbitrary 

27 
expressions. Secondly, in a local context with structure 

28 
declarations, number indexes \<^sub>n or the empty index (default 

29 
number 1) refer to a certain fixed variable implicitly; option 

30 
show_structs controls printing of implicit structures. Typical 

31 
applications of these concepts involve record types and locales. 

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* Pure: clear separation of logical types and nonterminals, where the 
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latter may only occur in 'syntax' specifications or type 
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abbreviations. Before that distinction was only partially 
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implemented via type class "logic" vs. "{}". Potential 
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INCOMPATIBILITY in rare cases of improper use of 'types'/'consts' 
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instead of 'nonterminals'/'syntax'. Some very exotic syntax 
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specifications may require further adaption (e.g. Cube/Base.thy). 
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14854  41 
* Pure: removed obsolete type class "logic", use the top sort {} 
42 
instead. Note that nonlogical types should be declared as 

43 
'nonterminals' rather than 'types'. INCOMPATIBILITY for new 

44 
objectlogic specifications. 

45 

15022  46 
* Pure: print_tac now outputs the goal through the trace channel. 
47 

48 
* Pure: reference Namespace.unique_names included. If true the 

49 
(shortest) namespaceprefix is printed to disambiguate conflicts (as 

50 
yet). If false the first entry wins (as during parsing). Default 

51 
value is true. 

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* Pure: tuned internal renaming of symbolic identifiers  attach 
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primes instead of base 26 numbers. 
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* Pure/Syntax: inner syntax includes (*(*nested*) comments*). 
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* Pure/Syntax: pretty pinter now supports unbreakable blocks, 
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specified in mixfix annotations as "(00...)". 
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* Pure/Syntax: 'advanced' translation functions (parse_translation 
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etc.) may depend on the signature of the theory context being 
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presently used for parsing/printing, see also isarref manual. 
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* Pure/Simplifier: simplification procedures may now take the current 
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simpset into account (cf. Simplifier.simproc(_i) / mk_simproc 
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interface), which is very useful for calling the Simplifier 
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recursively. Minor INCOMPATIBILITY: the 'prems' argument of 
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simprocs is gone  use prems_of_ss on the simpset instead. 
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Moreover, the lowlevel mk_simproc no longer applies Logic.varify 
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internally, to allow for use in a context of fixed variables. 
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* Provers: Simplifier and Classical Reasoner now support proof context 
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dependent plugins (simprocs, solvers, wrappers etc.). These extra 
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components are stored in the theory and patched into the 
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simpset/claset when used in an Isar proof context. Context 
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dependent components are maintained by the following theory 
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operations: 
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Simplifier.add_context_simprocs 
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Simplifier.del_context_simprocs 
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Simplifier.set_context_subgoaler 
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Simplifier.reset_context_subgoaler 
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Simplifier.add_context_looper 
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Simplifier.del_context_looper 
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Simplifier.add_context_unsafe_solver 
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Simplifier.add_context_safe_solver 
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88 

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Classical.add_context_safe_wrapper 
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Classical.del_context_safe_wrapper 
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Classical.add_context_unsafe_wrapper 
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Classical.del_context_unsafe_wrapper 
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IMPORTANT NOTE: proof tools (methods etc.) need to use 
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local_simpset_of and local_claset_of to instead of the primitive 
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Simplifier.get_local_simpset and Classical.get_local_claset, 
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respectively, in order to see the context dependent fields! 
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* Document preparation: antiquotations now provide the option 
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'locale=NAME' to specify an alternative context used for evaluating 
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and printing the subsequent argument, as in @{thm [locale=LC] 
14919  102 
fold_commute}, for example. 
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14934  104 
* Document preparation: commands 'display_drafts' and 'print_drafts' 
105 
perform simple output of raw sources. Only those symbols that do 

106 
not require additional LaTeX packages (depending on comments in 

107 
isabellesym.sty) are displayed properly, everything else is left 

108 
verbatim. We use isatool display and isatool print as front ends; 

109 
these are subject to the DVI_VIEWER and PRINT_COMMAND settings, 

110 
respectively. 

111 

14917  112 
* ML: output via the Isabelle channels of writeln/warning/error 
113 
etc. is now passed through Output.output, with a hook for arbitrary 

114 
transformations depending on the print_mode (cf. Output.add_mode  

115 
the first active mode that provides a output function wins). 

116 
Already formatted output may be embedded into further text via 

117 
Output.raw; the result of Pretty.string_of/str_of and derived 

118 
functions (string_of_term/cterm/thm etc.) is already marked raw to 

119 
accommodate easy composition of diagnostic messages etc. 

120 
Programmers rarely need to care about Output.output or Output.raw at 

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all, with some notable exceptions: Output.output is required when 

122 
bypassing the standard channels (writeln etc.), or in token 

123 
translations to produce properly formatted results; Output.raw is 

124 
required when capturing already output material that will eventually 

14972  125 
be presented to the user a second time. For the default print mode, 
126 
both Output.output and Output.raw have no effect. 

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*** HOL *** 
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14731  131 
* HOL/record: reimplementation of records. Improved scalability for 
132 
records with many fields, avoiding performance problems for type 

133 
inference. Records are no longer composed of nested field types, but 

134 
of nested extension types. Therefore the record type only grows 

135 
linear in the number of extensions and not in the number of fields. 

136 
The toplevel (users) view on records is preserved. Potential 

137 
INCOMPATIBILITY only in strange cases, where the theory depends on 

138 
the old record representation. The type generated for a record is 

139 
called <record_name>_ext_type. 

140 

15022  141 
* HOL/record: Reference record_quick_and_dirty_sensitive can be 
142 
enabled to skip the proofs triggered by a record definition or a 

143 
simproc (if quick_and_dirty is enabled). Definitions of large 

144 
records can take quite long. 

145 

146 
* HOL/record: "record_upd_simproc" for simplification of multiple 

147 
record updates enabled by default. Moreover, trivial updates are 

148 
also removed: r(x := x r) = r. INCOMPATIBILITY: old proofs break 

149 
occasionally, since simplification is more powerful by default. 

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14878  151 
* HOL: symbolic syntax of Hilbert Choice Operator is now as follows: 
152 

153 
syntax (epsilon) 

154 
"_Eps" :: "[pttrn, bool] => 'a" ("(3\<some>_./ _)" [0, 10] 10) 

155 

156 
The symbol \<some> is displayed as the alternative epsilon of LaTeX 

157 
and xsymbol; use option 'm epsilon' to get it actually printed. 

158 
Moreover, the mathematically important symbolic identifier 

159 
\<epsilon> becomes available as variable, constant etc. 

160 

15046  161 
* HOL/SetInterval: The syntax for open intervals has changed: 
162 

163 
Old New 

164 
{..n(} > {..<n} 

165 
{)n..} > {n<..} 

166 
{m..n(} > {m..<n} 

167 
{)m..n} > {m<..n} 

168 
{)m..n(} > {m<..<n} 

169 

170 
The old syntax is still supported but will disappear in the future. 

171 
For conversion use the following emacs search and replace patterns: 

172 

173 
{)\([^\.]*\)\.\. > {\1<\.\.} 

174 
\.\.\([^(}]*\)(} > \.\.<\1} 

175 

176 
They are not perfect but work quite well. 

177 

15073  178 
* HOL: The syntax for 'setsum', summation over finite sets, has changed: 
179 

180 
The syntax for 'setsum (%x. e) A' used to be '\<Sum>x:A. e' 

181 
and is now either 'SUM x:A. e' or '\<Sum>x\<in>A. e'. 

182 

183 
There is new syntax for summation over finite sets: 

15046  184 

15050  185 
'\<Sum>x  P. e' is the same as 'setsum (%x. e) {x. P}' 
186 
'\<Sum>x=a..b. e' is the same as 'setsum (%x. e) {a..b}' 

187 
'\<Sum>x=a..<b. e' is the same as 'setsum (%x. e) {a..<b}' 

188 
'\<Sum>x<k. e' is the same as 'setsum (%x. e) {..<k}' 

15046  189 

190 
Function 'Summation' over nat is gone, its syntax '\<Sum>i<k. e' 

191 
now translates into 'setsum' as above. 

192 

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* HOL/Simplifier: Is now set up to reason about transitivity chains 
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involving "trancl" (r^+) and "rtrancl" (r^*) by setting up tactics 
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provided by Provers/trancl.ML as additional solvers. 
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INCOMPATIBILITY: old proofs break occasionally as simplification may 
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now solve more goals than previously. 
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198 

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*** HOLCF *** 
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* HOLCF: discontinued special version of 'constdefs' (which used to 
14731  203 
support continuous functions) in favor of the general Pure one with 
204 
full typeinference. 

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*** ZF *** 
208 

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* ZF/ex/{Group,Ring}: examples in abstract algebra, including the 
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First Isomorphism Theorem (on quotienting by the kernel of a 
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homomorphism). 
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* ZF/Simplifier: install second copy of type solver that actually 
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makes use of TC rules declared to Isar proof contexts (or locales); 
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the old version is still required for ML proof scripts. 
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217 

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New in Isabelle2004 (April 2004) 
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*** General *** 
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223 

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* Provers/order.ML: new efficient reasoner for partial and linear orders. 
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Replaces linorder.ML. 
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14606  227 
* Pure: Greek letters (except small lambda, \<lambda>), as well as Gothic 
228 
(\<aa>...\<zz>\<AA>...\<ZZ>), calligraphic (\<A>...\<Z>), and Euler 

14173  229 
(\<a>...\<z>), are now considered normal letters, and can therefore 
230 
be used anywhere where an ASCII letter (a...zA...Z) has until 

231 
now. COMPATIBILITY: This obviously changes the parsing of some 

232 
terms, especially where a symbol has been used as a binder, say 

233 
'\<Pi>x. ...', which is now a type error since \<Pi>x will be parsed 

234 
as an identifier. Fix it by inserting a space around former 

235 
symbols. Call 'isatool fixgreek' to try to fix parsing errors in 

236 
existing theory and ML files. 

14171
0cab06e3bbd0
Extended the notion of letter and digit, such that now one may use greek,
skalberg
parents:
14136
diff
changeset

237 

14237  238 
* Pure: Macintosh and Windows linebreaks are now allowed in theory files. 
239 

14731  240 
* Pure: single letter sub/superscripts (\<^isub> and \<^isup>) are now 
241 
allowed in identifiers. Similar to Greek letters \<^isub> is now considered 

242 
a normal (but invisible) letter. For multiple letter subscripts repeat 

243 
\<^isub> like this: x\<^isub>1\<^isub>2. 

14233  244 

14333  245 
* Pure: There are now sub/superscripts that can span more than one 
246 
character. Text between \<^bsub> and \<^esub> is set in subscript in 

14606  247 
ProofGeneral and LaTeX, text between \<^bsup> and \<^esup> in 
248 
superscript. The new control characters are not identifier parts. 

14333  249 

14561
c53396af770e
* raw control symbols are of the form \<^raw:...> now.
schirmer
parents:
14556
diff
changeset

250 
* Pure: Controlsymbols of the form \<^raw:...> will literally print the 
14606  251 
content of "..." to the latex file instead of \isacntrl... . The "..." 
252 
may consist of any printable characters excluding the end bracket >. 

14361
ad2f5da643b4
* Support for raw latex output in control symbols: \<^raw...>
schirmer
parents:
14333
diff
changeset

253 

14237  254 
* Pure: Using new Isar command "finalconsts" (or the ML functions 
255 
Theory.add_finals or Theory.add_finals_i) it is now possible to 

256 
declare constants "final", which prevents their being given a definition 

257 
later. It is useful for constants whose behaviour is fixed axiomatically 

14224  258 
rather than definitionally, such as the metalogic connectives. 
259 

14606  260 
* Pure: 'instance' now handles general arities with general sorts 
261 
(i.e. intersections of classes), 

14503
255ad604e08e
Added check that Theory.ML does not occur in the files section of the theory
skalberg
parents:
14480
diff
changeset

262 

14547  263 
* Presentation: generated HTML now uses a CSS style sheet to make layout 
14731  264 
(somewhat) independent of content. It is copied from lib/html/isabelle.css. 
14547  265 
It can be changed to alter the colors/layout of generated pages. 
266 

14556
c5078f6c99a9
* Calculation commands "moreover" and "also" no longer interfere with
wenzelm
parents:
14551
diff
changeset

267 

14175
dbd16ebaf907
Method rule_tac understands Isar contexts: documentation.
ballarin
parents:
14173
diff
changeset

268 
*** Isar *** 
dbd16ebaf907
Method rule_tac understands Isar contexts: documentation.
ballarin
parents:
14173
diff
changeset

269 

14508
859b11514537
Experimental command for instantiation of locales in proof contexts:
ballarin
parents:
14503
diff
changeset

270 
* Tactic emulation methods rule_tac, erule_tac, drule_tac, frule_tac, 
859b11514537
Experimental command for instantiation of locales in proof contexts:
ballarin
parents:
14503
diff
changeset

271 
cut_tac, subgoal_tac and thin_tac: 
14175
dbd16ebaf907
Method rule_tac understands Isar contexts: documentation.
ballarin
parents:
14173
diff
changeset

272 
 Now understand static (Isar) contexts. As a consequence, users of Isar 
dbd16ebaf907
Method rule_tac understands Isar contexts: documentation.
ballarin
parents:
14173
diff
changeset

273 
locales are no longer forced to write Isar proof scripts. 
dbd16ebaf907
Method rule_tac understands Isar contexts: documentation.
ballarin
parents:
14173
diff
changeset

274 
For details see Isar Reference Manual, paragraph 4.3.2: Further tactic 
dbd16ebaf907
Method rule_tac understands Isar contexts: documentation.
ballarin
parents:
14173
diff
changeset

275 
emulations. 
dbd16ebaf907
Method rule_tac understands Isar contexts: documentation.
ballarin
parents:
14173
diff
changeset

276 
 INCOMPATIBILITY: names of variables to be instantiated may no 
14211
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
parents:
14199
diff
changeset

277 
longer be enclosed in quotes. Instead, precede variable name with `?'. 
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
parents:
14199
diff
changeset

278 
This is consistent with the instantiation attribute "where". 
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
parents:
14199
diff
changeset

279 

14257
a7ef3f7588c5
Type inference bug in Isar attributes "where" and "of" fixed.
ballarin
parents:
14255
diff
changeset

280 
* Attributes "where" and "of": 
14285
92ed032e83a1
Isar: where attribute supports instantiation of type vars.
ballarin
parents:
14283
diff
changeset

281 
 Now take type variables of instantiated theorem into account when reading 
92ed032e83a1
Isar: where attribute supports instantiation of type vars.
ballarin
parents:
14283
diff
changeset

282 
the instantiation string. This fixes a bug that caused instantiated 
92ed032e83a1
Isar: where attribute supports instantiation of type vars.
ballarin
parents:
14283
diff
changeset

283 
theorems to have too special types in some circumstances. 
92ed032e83a1
Isar: where attribute supports instantiation of type vars.
ballarin
parents:
14283
diff
changeset

284 
 "where" permits explicit instantiations of type variables. 
14257
a7ef3f7588c5
Type inference bug in Isar attributes "where" and "of" fixed.
ballarin
parents:
14255
diff
changeset

285 

14556
c5078f6c99a9
* Calculation commands "moreover" and "also" no longer interfere with
wenzelm
parents:
14551
diff
changeset

286 
* Calculation commands "moreover" and "also" no longer interfere with 
c5078f6c99a9
* Calculation commands "moreover" and "also" no longer interfere with
wenzelm
parents:
14551
diff
changeset

287 
current facts ("this"), admitting arbitrary combinations with "then" 
c5078f6c99a9
* Calculation commands "moreover" and "also" no longer interfere with
wenzelm
parents:
14551
diff
changeset

288 
and derived forms. 
14283  289 

14211
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
parents:
14199
diff
changeset

290 
* Locales: 
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
parents:
14199
diff
changeset

291 
 Goal statements involving the context element "includes" no longer 
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
parents:
14199
diff
changeset

292 
generate theorems with internal delta predicates (those ending on 
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
parents:
14199
diff
changeset

293 
"_axioms") in the premise. 
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
parents:
14199
diff
changeset

294 
Resolve particular premise with <locale>.intro to obtain old form. 
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
parents:
14199
diff
changeset

295 
 Fixed bug in type inference ("unify_frozen") that prevented mix of target 
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
parents:
14199
diff
changeset

296 
specification and "includes" elements in goal statement. 
14254
342634f38451
Isar/Locales: <loc>.intro and <loc>.axioms no longer intro? and elim? by
ballarin
parents:
14243
diff
changeset

297 
 Rule sets <locale>.intro and <locale>.axioms no longer declared as 
342634f38451
Isar/Locales: <loc>.intro and <loc>.axioms no longer intro? and elim? by
ballarin
parents:
14243
diff
changeset

298 
[intro?] and [elim?] (respectively) by default. 
14508
859b11514537
Experimental command for instantiation of locales in proof contexts:
ballarin
parents:
14503
diff
changeset

299 
 Experimental command for instantiation of locales in proof contexts: 
14551  300 
instantiate <label>[<attrs>]: <loc> 
14508
859b11514537
Experimental command for instantiation of locales in proof contexts:
ballarin
parents:
14503
diff
changeset

301 
Instantiates locale <loc> and adds all its theorems to the current context 
14551  302 
taking into account their attributes. Label and attrs are optional 
303 
modifiers, like in theorem declarations. If present, names of 

304 
instantiated theorems are qualified with <label>, and the attributes 

305 
<attrs> are applied after any attributes these theorems might have already. 

306 
If the locale has assumptions, a chained fact of the form 

14508
859b11514537
Experimental command for instantiation of locales in proof contexts:
ballarin
parents:
14503
diff
changeset

307 
"<loc> t1 ... tn" is expected from which instantiations of the parameters 
14551  308 
are derived. The command does not support oldstyle locales declared 
309 
with "locale (open)". 

310 
A few (very simple) examples can be found in FOL/ex/LocaleInst.thy. 

14175
dbd16ebaf907
Method rule_tac understands Isar contexts: documentation.
ballarin
parents:
14173
diff
changeset

311 

dbd16ebaf907
Method rule_tac understands Isar contexts: documentation.
ballarin
parents:
14173
diff
changeset

312 
* HOL: Tactic emulation methods induct_tac and case_tac understand static 
dbd16ebaf907
Method rule_tac understands Isar contexts: documentation.
ballarin
parents:
14173
diff
changeset

313 
(Isar) contexts. 
dbd16ebaf907
Method rule_tac understands Isar contexts: documentation.
ballarin
parents:
14173
diff
changeset

314 

14556
c5078f6c99a9
* Calculation commands "moreover" and "also" no longer interfere with
wenzelm
parents:
14551
diff
changeset

315 

14136  316 
*** HOL *** 
317 

14624  318 
* Proof import: new image HOL4 contains the imported library from 
319 
the HOL4 system with about 2500 theorems. It is imported by 

320 
replaying proof terms produced by HOL4 in Isabelle. The HOL4 image 

321 
can be used like any other Isabelle image. See 

322 
HOL/Import/HOL/README for more information. 

323 

14398
c5c47703f763
Efficient, graphbased reasoner for linear and partial orders.
ballarin
parents:
14389
diff
changeset

324 
* Simplifier: 
c5c47703f763
Efficient, graphbased reasoner for linear and partial orders.
ballarin
parents:
14389
diff
changeset

325 
 Much improved handling of linear and partial orders. 
c5c47703f763
Efficient, graphbased reasoner for linear and partial orders.
ballarin
parents:
14389
diff
changeset

326 
Reasoners for linear and partial orders are set up for type classes 
c5c47703f763
Efficient, graphbased reasoner for linear and partial orders.
ballarin
parents:
14389
diff
changeset

327 
"linorder" and "order" respectively, and are added to the default simpset 
c5c47703f763
Efficient, graphbased reasoner for linear and partial orders.
ballarin
parents:
14389
diff
changeset

328 
as solvers. This means that the simplifier can build transitivity chains 
c5c47703f763
Efficient, graphbased reasoner for linear and partial orders.
ballarin
parents:
14389
diff
changeset

329 
to solve goals from the assumptions. 
c5c47703f763
Efficient, graphbased reasoner for linear and partial orders.
ballarin
parents:
14389
diff
changeset

330 
 INCOMPATIBILITY: old proofs break occasionally. Typically, applications 
c5c47703f763
Efficient, graphbased reasoner for linear and partial orders.
ballarin
parents:
14389
diff
changeset

331 
of blast or auto after simplification become unnecessary because the goal 
c5c47703f763
Efficient, graphbased reasoner for linear and partial orders.
ballarin
parents:
14389
diff
changeset

332 
is solved by simplification already. 
c5c47703f763
Efficient, graphbased reasoner for linear and partial orders.
ballarin
parents:
14389
diff
changeset

333 

14731  334 
* Numerics: new theory Ring_and_Field contains over 250 basic numerical laws, 
14389  335 
all proved in axiomatic type classes for semirings, rings and fields. 
336 

337 
* Numerics: 

338 
 Numeric types (nat, int, and in HOLComplex rat, real, complex, etc.) are 

14731  339 
now formalized using the Ring_and_Field theory mentioned above. 
14389  340 
 INCOMPATIBILITY: simplification and arithmetic behaves somewhat differently 
341 
than before, because now they are set up once in a generic manner. 

14731  342 
 INCOMPATIBILITY: many typespecific arithmetic laws have gone. 
14480  343 
Look for the general versions in Ring_and_Field (and Power if they concern 
344 
exponentiation). 

14389  345 

14401  346 
* Type "rat" of the rational numbers is now available in HOLComplex. 
14389  347 

14255  348 
* Records: 
349 
 Record types are now by default printed with their type abbreviation 

350 
instead of the list of all field types. This can be configured via 

351 
the reference "print_record_type_abbr". 

14731  352 
 Simproc "record_upd_simproc" for simplification of multiple updates added 
14255  353 
(not enabled by default). 
14427  354 
 Simproc "record_ex_sel_eq_simproc" to simplify EX x. sel r = x resp. 
355 
EX x. x = sel r to True (not enabled by default). 

14255  356 
 Tactic "record_split_simp_tac" to split and simplify records added. 
14731  357 

14136  358 
* 'specification' command added, allowing for definition by 
14224  359 
specification. There is also an 'ax_specification' command that 
360 
introduces the new constants axiomatically. 

14136  361 

14375  362 
* arith(_tac) is now able to generate counterexamples for reals as well. 
363 

14399
dc677b35e54f
New lemmas about inversion of restricted functions.
ballarin
parents:
14398
diff
changeset

364 
* HOLAlgebra: new locale "ring" for noncommutative rings. 
dc677b35e54f
New lemmas about inversion of restricted functions.
ballarin
parents:
14398
diff
changeset

365 

14243  366 
* HOLex: InductiveInvariant_examples illustrates advanced recursive function 
14610  367 
definitions, thanks to Sava Krsti\'{c} and John Matthews. 
368 

14731  369 
* HOLMatrix: a first theory for matrices in HOL with an application of 
14610  370 
matrix theory to linear programming. 
14136  371 

14380  372 
* Unions and Intersections: 
373 
The xsymbol output syntax of UN and INT has been changed 

374 
from "\<Union>x \<in> A. B" to "\<Union\<^bsub>x \<in> A\<^esub> B" 

375 
i.e. the index formulae has become a subscript, like in normal math. 

376 
Similarly for "\<Union>x. B", and for \<Inter> instead of \<Union>. 

377 
The subscript version is also accepted as input syntax. 

378 

14418  379 
* Unions and Intersections over Intervals: 
14731  380 
There is new short syntax "UN i<=n. A" for "UN i:{0..n}. A". There is 
381 
also an xsymbol version with subscripts "\<Union>\<^bsub>i <= n\<^esub>. A" 

14418  382 
like in normal math, and corresponding versions for < and for intersection. 
383 

14401  384 
* ML: the legacy theory structures Int and List have been removed. They had 
385 
conflicted with ML Basis Library structures having the same names. 

14380  386 

14464  387 
* 'refute' command added to search for (finite) countermodels. Only works 
388 
for a fragment of HOL. The installation of an external SAT solver is 

389 
highly recommended. See "HOL/Refute.thy" for details. 

390 

14602  391 
* 'quickcheck' command: Allows to find counterexamples by evaluating 
392 
formulae under an assignment of free variables to random values. 

393 
In contrast to 'refute', it can deal with inductive datatypes, 

394 
but cannot handle quantifiers. See "HOL/ex/Quickcheck_Examples.thy" 

395 
for examples. 

14464  396 

14606  397 

14536  398 
*** HOLCF *** 
399 

400 
* Streams now come with concatenation and are part of the HOLCF image 

401 

14572  402 

403 

14136  404 
New in Isabelle2003 (May 2003) 
14606  405 
 
14136  406 

13280
306ef3aef61b
* improved thms_containing: proper indexing of facts instead of raw
wenzelm
parents:
13190
diff
changeset

407 
*** General *** 
306ef3aef61b
* improved thms_containing: proper indexing of facts instead of raw
wenzelm
parents:
13190
diff
changeset

408 

13618  409 
* Provers/simplifier: 
410 

13781  411 
 Completely reimplemented method simp (ML: Asm_full_simp_tac): 
13618  412 
Assumptions are now subject to complete mutual simplification, 
413 
not just from left to right. The simplifier now preserves 

414 
the order of assumptions. 

415 

416 
Potential INCOMPATIBILITY: 

417 

13781  418 
 simp sometimes diverges where the old version did 
419 
not, e.g. invoking simp on the goal 

13618  420 

421 
[ P (f x); y = x; f x = f y ] ==> Q 

422 

13781  423 
now gives rise to the infinite reduction sequence 
424 

425 
P(f x) (f x = f y)> P(f y) (y = x)> P(f x) (f x = f y)> ... 

426 

427 
Using "simp (asm_lr)" (ML: Asm_lr_simp_tac) instead often solves this 

428 
kind of problem. 

429 

430 
 Tactics combining classical reasoner and simplification (such as auto) 

431 
are also affected by this change, because many of them rely on 

432 
simp. They may sometimes diverge as well or yield a different numbers 

433 
of subgoals. Try to use e.g. force, fastsimp, or safe instead of auto 

434 
in case of problems. Sometimes subsequent calls to the classical 

435 
reasoner will fail because a preceeding call to the simplifier too 

436 
eagerly simplified the goal, e.g. deleted redundant premises. 

13618  437 

438 
 The simplifier trace now shows the names of the applied rewrite rules 

439 

13829  440 
 You can limit the number of recursive invocations of the simplifier 
441 
during conditional rewriting (where the simplifie tries to solve the 

442 
conditions before applying the rewrite rule): 

443 
ML "simp_depth_limit := n" 

444 
where n is an integer. Thus you can force termination where previously 

445 
the simplifier would diverge. 

446 

13835
12b2ffbe543a
Change to meta simplifier: congruence rules may now have frees as head of term.
ballarin
parents:
13829
diff
changeset

447 
 Accepts free variables as head terms in congruence rules. Useful in Isar. 
13829  448 

13938  449 
 No longer aborts on failed congruence proof. Instead, the 
450 
congruence is ignored. 

451 

14008  452 
* Pure: New generic framework for extracting programs from constructive 
453 
proofs. See HOL/Extraction.thy for an example instantiation, as well 

454 
as HOL/Extraction for some case studies. 

455 

13868  456 
* Pure: The main goal of the proof state is no longer shown by default, only 
457 
the subgoals. This behaviour is controlled by a new flag. 

13835
12b2ffbe543a
Change to meta simplifier: congruence rules may now have frees as head of term.
ballarin
parents:
13829
diff
changeset

458 
PG menu: Isabelle/Isar > Settings > Show Main Goal 
13815  459 
(ML: Proof.show_main_goal). 
460 

461 
* Pure: You can find all matching introduction rules for subgoal 1, i.e. all 

462 
rules whose conclusion matches subgoal 1: 

463 
PG menu: Isabelle/Isar > Show me > matching rules 

464 
The rules are ordered by how closely they match the subgoal. 

465 
In particular, rules that solve a subgoal outright are displayed first 

466 
(or rather last, the way they are printed). 

467 
(ML: ProofGeneral.print_intros()) 

468 

469 
* Pure: New flag trace_unify_fail causes unification to print 

13781  470 
diagnostic information (PG: in trace buffer) when it fails. This is 
471 
useful for figuring out why single step proofs like rule, erule or 

472 
assumption failed. 

473 

13815  474 
* Pure: Locale specifications now produce predicate definitions 
13410
f2cd09766864
* Pure: locale specifications now produce predicate definitions;
wenzelm
parents:
13344
diff
changeset

475 
according to the body of text (covering assumptions modulo local 
f2cd09766864
* Pure: locale specifications now produce predicate definitions;
wenzelm
parents:
13344
diff
changeset

476 
definitions); predicate "loc_axioms" covers newly introduced text, 
f2cd09766864
* Pure: locale specifications now produce predicate definitions;
wenzelm
parents:
13344
diff
changeset

477 
while "loc" is cumulative wrt. all included locale expressions; the 
f2cd09766864
* Pure: locale specifications now produce predicate definitions;
wenzelm
parents:
13344
diff
changeset

478 
latter view is presented only on export into the global theory 
f2cd09766864
* Pure: locale specifications now produce predicate definitions;
wenzelm
parents:
13344
diff
changeset

479 
context; potential INCOMPATIBILITY, use "(open)" option to fall back 
f2cd09766864
* Pure: locale specifications now produce predicate definitions;
wenzelm
parents:
13344
diff
changeset

480 
on the old view without predicates; 
f2cd09766864
* Pure: locale specifications now produce predicate definitions;
wenzelm
parents:
13344
diff
changeset

481 

13459
83f41b047a39
* Pure: predefined locales "var" and "struct" are useful for sharing
wenzelm
parents:
13443
diff
changeset

482 
* Pure: predefined locales "var" and "struct" are useful for sharing 
83f41b047a39
* Pure: predefined locales "var" and "struct" are useful for sharing
wenzelm
parents:
13443
diff
changeset

483 
parameters (as in CASL, for example); just specify something like 
83f41b047a39
* Pure: predefined locales "var" and "struct" are useful for sharing
wenzelm
parents:
13443
diff
changeset

484 
``var x + var y + struct M'' as import; 
83f41b047a39
* Pure: predefined locales "var" and "struct" are useful for sharing
wenzelm
parents:
13443
diff
changeset

485 

13463
07747943c626
* Provers: Simplifier.simproc(_i) now provide sane interface for
wenzelm
parents:
13459
diff
changeset

486 
* Pure: improved thms_containing: proper indexing of facts instead of 
07747943c626
* Provers: Simplifier.simproc(_i) now provide sane interface for
wenzelm
parents:
13459
diff
changeset

487 
raw theorems; check validity of results wrt. current name space; 
07747943c626
* Provers: Simplifier.simproc(_i) now provide sane interface for
wenzelm
parents:
13459
diff
changeset

488 
include local facts of proof configuration (also covers active 
13541  489 
locales), cover fixed variables in index; may use "_" in term 
490 
specification; an optional limit for the number of printed facts may 

491 
be given (the default is 40); 

492 

493 
* Pure: disallow duplicate fact bindings within newstyle theory files 

494 
(batchmode only); 

13540
aede0306e214
* Pure: disallow duplicate fact bindings within newstyle theory files;
wenzelm
parents:
13522
diff
changeset

495 

13463
07747943c626
* Provers: Simplifier.simproc(_i) now provide sane interface for
wenzelm
parents:
13459
diff
changeset

496 
* Provers: improved induct method: assumptions introduced by case 
07747943c626
* Provers: Simplifier.simproc(_i) now provide sane interface for
wenzelm
parents:
13459
diff
changeset

497 
"foo" are split into "foo.hyps" (from the rule) and "foo.prems" (from 
07747943c626
* Provers: Simplifier.simproc(_i) now provide sane interface for
wenzelm
parents:
13459
diff
changeset

498 
the goal statement); "foo" still refers to all facts collectively; 
07747943c626
* Provers: Simplifier.simproc(_i) now provide sane interface for
wenzelm
parents:
13459
diff
changeset

499 

13550  500 
* Provers: the function blast.overloaded has been removed: all constants 
501 
are regarded as potentially overloaded, which improves robustness in exchange 

502 
for slight decrease in efficiency; 

503 

13781  504 
* Provers/linorder: New generic prover for transitivity reasoning over 
505 
linear orders. Note: this prover is not efficient! 

506 

13522
934fffeb6f38
* Isar: preview of problems to finish 'show' now produce an error
wenzelm
parents:
13518
diff
changeset

507 
* Isar: preview of problems to finish 'show' now produce an error 
934fffeb6f38
* Isar: preview of problems to finish 'show' now produce an error
wenzelm
parents:
13518
diff
changeset

508 
rather than just a warning (in interactive mode); 
934fffeb6f38
* Isar: preview of problems to finish 'show' now produce an error
wenzelm
parents:
13518
diff
changeset

509 

13280
306ef3aef61b
* improved thms_containing: proper indexing of facts instead of raw
wenzelm
parents:
13190
diff
changeset

510 

13158  511 
*** HOL *** 
512 

13899  513 
* arith(_tac) 
514 

515 
 Produces a counter example if it cannot prove a goal. 

516 
Note that the counter example may be spurious if the goal is not a formula 

517 
of quantifierfree linear arithmetic. 

518 
In ProofGeneral the counter example appears in the trace buffer. 

519 

520 
 Knows about div k and mod k where k is a numeral of type nat or int. 

521 

522 
 Calls full Presburger arithmetic (by Amine Chaieb) if quantifierfree 

523 
linear arithmetic fails. This takes account of quantifiers and divisibility. 

14731  524 
Presburger arithmetic can also be called explicitly via presburger(_tac). 
13899  525 

526 
* simp's arithmetic capabilities have been enhanced a bit: it now 

527 
takes ~= in premises into account (by performing a case split); 

528 

529 
* simp reduces "m*(n div m) + n mod m" to n, even if the two summands 

530 
are distributed over a sum of terms; 

531 

13735  532 
* New tactic "trans_tac" and method "trans" instantiate 
533 
Provers/linorder.ML for axclasses "order" and "linorder" (predicates 

14731  534 
"<=", "<" and "="). 
535 

536 
* function INCOMPATIBILITIES: Pisets have been redefined and moved from main 

13587  537 
HOL to Library/FuncSet; constant "Fun.op o" is now called "Fun.comp"; 
538 

13443  539 
* 'typedef' command has new option "open" to suppress the set 
540 
definition; 

541 

13522
934fffeb6f38
* Isar: preview of problems to finish 'show' now produce an error
wenzelm
parents:
13518
diff
changeset

542 
* functions Min and Max on finite sets have been introduced (theory 
934fffeb6f38
* Isar: preview of problems to finish 'show' now produce an error
wenzelm
parents:
13518
diff
changeset

543 
Finite_Set); 
13492  544 

13443  545 
* attribute [symmetric] now works for relations as well; it turns 
546 
(x,y) : R^1 into (y,x) : R, and vice versa; 

547 

13613  548 
* induct over a !!quantified statement (say !!x1..xn): 
549 
each "case" automatically performs "fix x1 .. xn" with exactly those names. 

550 

13899  551 
* Map: `empty' is no longer a constant but a syntactic abbreviation for 
552 
%x. None. Warning: empty_def now refers to the previously hidden definition 

553 
of the empty set. 

554 

14018  555 
* Algebra: formalization of classical algebra. Intended as base for 
556 
any algebraic development in Isabelle. Currently covers group theory 

557 
(up to Sylow's theorem) and ring theory (Universal Property of 

558 
Univariate Polynomials). Contributions welcome; 

13960  559 

560 
* GroupTheory: deleted, since its material has been moved to Algebra; 

561 

14731  562 
* Complex: new directory of the complex numbers with numeric constants, 
563 
nonstandard complex numbers, and some complex analysis, standard and 

13966
2160abf7cfe7
removal of the image HOLReal and merging of HOLRealex with HOLComplexex
paulson
parents:
13960
diff
changeset

564 
nonstandard (Jacques Fleuriot); 
2160abf7cfe7
removal of the image HOLReal and merging of HOLRealex with HOLComplexex
paulson
parents:
13960
diff
changeset

565 

2160abf7cfe7
removal of the image HOLReal and merging of HOLRealex with HOLComplexex
paulson
parents:
13960
diff
changeset

566 
* HOLComplex: new image for analysis, replacing HOLReal and HOLHyperreal; 
2160abf7cfe7
removal of the image HOLReal and merging of HOLRealex with HOLComplexex
paulson
parents:
13960
diff
changeset

567 

14731  568 
* Hyperreal: introduced Gauge integration and hyperreal logarithms (Jacques 
13966
2160abf7cfe7
removal of the image HOLReal and merging of HOLRealex with HOLComplexex
paulson
parents:
13960
diff
changeset

569 
Fleuriot); 
13960  570 

13549  571 
* Real/HahnBanach: updated and adapted to locales; 
572 

13995  573 
* NumberTheory: added Gauss's law of quadratic reciprocity (by Avigad, 
574 
Gray and Kramer); 

13872  575 

576 
* UNITY: added the MeierSanders theory of progress sets; 

577 

14011  578 
* MicroJava: bytecode verifier and lightweight bytecode verifier 
579 
as abstract algorithms, instantiated to the JVM; 

580 

14010  581 
* Bali: Java source language formalization. Type system, operational 
582 
semantics, axiomatic semantics. Supported language features: 

583 
classes, interfaces, objects,virtual methods, static methods, 

584 
static/instance fields, arrays, access modifiers, definite 

585 
assignment, exceptions. 

13549  586 

14011  587 

13549  588 
*** ZF *** 
589 

590 
* ZF/Constructible: consistency proof for AC (Gödel's constructible 

591 
universe, etc.); 

592 

13872  593 
* Main ZF: virtually all theories converted to newstyle format; 
13518  594 

13280
306ef3aef61b
* improved thms_containing: proper indexing of facts instead of raw
wenzelm
parents:
13190
diff
changeset

595 

13478  596 
*** ML *** 
597 

598 
* Pure: Tactic.prove provides sane interface for internal proofs; 

599 
omits the infamous "standard" operation, so this is more appropriate 

600 
than prove_goalw_cterm in many situations (e.g. in simprocs); 

601 

602 
* Pure: improved error reporting of simprocs; 

603 

604 
* Provers: Simplifier.simproc(_i) provides sane interface for setting 

605 
up simprocs; 

606 

607 

13953  608 
*** Document preparation *** 
609 

610 
* uses \par instead of \\ for line breaks in theory text. This may 

611 
shift some page breaks in large documents. To get the old behaviour 

612 
use \renewcommand{\isanewline}{\mbox{}\\\mbox{}} in root.tex. 

613 

14731  614 
* minimized dependencies of isabelle.sty and isabellesym.sty on 
13953  615 
other packages 
616 

617 
* \<euro> now needs package babel/greek instead of marvosym (which 

618 
broke \Rightarrow) 

619 

14731  620 
* normal size for \<zero>...\<nine> (uses \mathbf instead of 
13954  621 
textcomp package) 
13953  622 

13280
306ef3aef61b
* improved thms_containing: proper indexing of facts instead of raw
wenzelm
parents:
13190
diff
changeset

623 

14572  624 

12984  625 
New in Isabelle2002 (March 2002) 
626 
 

11474  627 

11572  628 
*** Document preparation *** 
629 

11842
b903d3dabbe2
* greatly simplified document preparation setup, including more
wenzelm
parents:
11817
diff
changeset

630 
* greatly simplified document preparation setup, including more 
b903d3dabbe2
* greatly simplified document preparation setup, including more
wenzelm
parents:
11817
diff
changeset

631 
graceful interpretation of isatool usedir i/d/D options, and more 
b903d3dabbe2
* greatly simplified document preparation setup, including more
wenzelm
parents:
11817
diff
changeset

632 
instructive isatool mkdir; users should basically be able to get 
12899
7d5b690253ee
"isatool usedir D output HOL Test && isatool document Test/output";
wenzelm
parents:
12889
diff
changeset

633 
started with "isatool mkdir HOL Test && isatool make"; alternatively, 
7d5b690253ee
"isatool usedir D output HOL Test && isatool document Test/output";
wenzelm
parents:
12889
diff
changeset

634 
users may run a separate document processing stage manually like this: 
7d5b690253ee
"isatool usedir D output HOL Test && isatool document Test/output";
wenzelm
parents:
12889
diff
changeset

635 
"isatool usedir D output HOL Test && isatool document Test/output"; 
11842
b903d3dabbe2
* greatly simplified document preparation setup, including more
wenzelm
parents:
11817
diff
changeset

636 

b903d3dabbe2
* greatly simplified document preparation setup, including more
wenzelm
parents:
11817
diff
changeset

637 
* theory dependency graph may now be incorporated into documents; 
b903d3dabbe2
* greatly simplified document preparation setup, including more
wenzelm
parents:
11817
diff
changeset

638 
isatool usedir g true will produce session_graph.eps/.pdf for use 
b903d3dabbe2
* greatly simplified document preparation setup, including more
wenzelm
parents:
11817
diff
changeset

639 
with \includegraphics of LaTeX; 
b903d3dabbe2
* greatly simplified document preparation setup, including more
wenzelm
parents:
11817
diff
changeset

640 

11864
371ce685b0ec
* proper spacing of consecutive markup elements, especially text
wenzelm
parents:
11842
diff
changeset

641 
* proper spacing of consecutive markup elements, especially text 
371ce685b0ec
* proper spacing of consecutive markup elements, especially text
wenzelm
parents:
11842
diff
changeset

642 
blocks after section headings; 
371ce685b0ec
* proper spacing of consecutive markup elements, especially text
wenzelm
parents:
11842
diff
changeset

643 

11572  644 
* support bold style (for single symbols only), input syntax is like 
645 
this: "\<^bold>\<alpha>" or "\<^bold>A"; 

646 

11814  647 
* \<bullet> is now output as bold \cdot by default, which looks much 
11572  648 
better in printed text; 
649 

11712
deb8cac87063
* added default LaTeX bindings for \<tturnstile> and \<TTurnstile>;
wenzelm
parents:
11702
diff
changeset

650 
* added default LaTeX bindings for \<tturnstile> and \<TTurnstile>; 
deb8cac87063
* added default LaTeX bindings for \<tturnstile> and \<TTurnstile>;
wenzelm
parents:
11702
diff
changeset

651 
note that these symbols are currently unavailable in Proof General / 
12769  652 
XSymbol; new symbols \<zero>, \<one>, ..., \<nine>, and \<euro>; 
12690  653 

654 
* isatool latex no longer depends on changed TEXINPUTS, instead 

655 
isatool document copies the Isabelle style files to the target 

656 
location; 

11712
deb8cac87063
* added default LaTeX bindings for \<tturnstile> and \<TTurnstile>;
wenzelm
parents:
11702
diff
changeset

657 

11572  658 

11633  659 
*** Isar *** 
660 

12312
f0f06950820d
* Isar/Pure: "sorry" no longer requires quick_and_dirty in interactive mode;
wenzelm
parents:
12280
diff
changeset

661 
* Pure/Provers: improved proof by cases and induction; 
12280  662 
 'case' command admits impromptu naming of parameters (such as 
663 
"case (Suc n)"); 

664 
 'induct' method divinates rule instantiation from the inductive 

665 
claim; no longer requires excessive ?P bindings for proper 

666 
instantiation of cases; 

667 
 'induct' method properly enumerates all possibilities of set/type 

668 
rules; as a consequence facts may be also passed through *type* 

669 
rules without further ado; 

670 
 'induct' method now derives symbolic cases from the *rulified* 

671 
rule (before it used to rulify cases stemming from the internal 

672 
atomized version); this means that the context of a nonatomic 

673 
statement becomes is included in the hypothesis, avoiding the 

674 
slightly cumbersome show "PROP ?case" form; 

675 
 'induct' may now use elimstyle induction rules without chaining 

676 
facts, using ``missing'' premises from the goal state; this allows 

677 
rules stemming from inductive sets to be applied in unstructured 

678 
scripts, while still benefitting from proper handling of nonatomic 

679 
statements; NB: major inductive premises need to be put first, all 

680 
the rest of the goal is passed through the induction; 

681 
 'induct' proper support for mutual induction involving nonatomic 

682 
rule statements (uses the new concept of simultaneous goals, see 

683 
below); 

12853  684 
 append all possible rule selections, but only use the first 
685 
success (no backtracking); 

11995
4a622f5fb164
 'induct' may now use elimstyle induction rules without chaining
wenzelm
parents:
11986
diff
changeset

686 
 removed obsolete "(simplified)" and "(stripped)" options of methods; 
12754
044a59921f3b
Isar: undeclared rule case names default to numbers 1, 2, 3, ...;
wenzelm
parents:
12753
diff
changeset

687 
 undeclared rule case names default to numbers 1, 2, 3, ...; 
044a59921f3b
Isar: undeclared rule case names default to numbers 1, 2, 3, ...;
wenzelm
parents:
12753
diff
changeset

688 
 added 'print_induct_rules' (covered by help item in recent Proof 
044a59921f3b
Isar: undeclared rule case names default to numbers 1, 2, 3, ...;
wenzelm
parents:
12753
diff
changeset

689 
General versions); 
11995
4a622f5fb164
 'induct' may now use elimstyle induction rules without chaining
wenzelm
parents:
11986
diff
changeset

690 
 moved induct/cases attributes to Pure, methods to Provers; 
4a622f5fb164
 'induct' may now use elimstyle induction rules without chaining
wenzelm
parents:
11986
diff
changeset

691 
 generic method setup instantiated for FOL and HOL; 
11986
26b95a6f3f79
 'induct' method now derives symbolic cases from the *rulified* rule
wenzelm
parents:
11965
diff
changeset

692 

12163
04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

693 
* Pure: support multiple simultaneous goal statements, for example 
04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

694 
"have a: A and b: B" (same for 'theorem' etc.); being a pure 
04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

695 
metalevel mechanism, this acts as if several individual goals had 
04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

696 
been stated separately; in particular common proof methods need to be 
04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

697 
repeated in order to cover all claims; note that a single elimination 
04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

698 
step is *not* sufficient to establish the two conjunctions, so this 
04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

699 
fails: 
04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

700 

04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

701 
assume "A & B" then have A and B .. (*".." fails*) 
04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

702 

04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

703 
better use "obtain" in situations as above; alternative refer to 
04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

704 
multistep methods like 'auto', 'simp_all', 'blast+' etc.; 
04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

705 

12078
4eb8061286e5
* Isar/Pure: proper integration with ``locales''; unlike the original
wenzelm
parents:
12034
diff
changeset

706 
* Pure: proper integration with ``locales''; unlike the original 
12210
2f510d8d8291
* ZF: newstyle theory commands '(co)inductive', '(co)datatype',
wenzelm
parents:
12177
diff
changeset

707 
version by Florian Kammüller, Isar locales package highlevel proof 
12078
4eb8061286e5
* Isar/Pure: proper integration with ``locales''; unlike the original
wenzelm
parents:
12034
diff
changeset

708 
contexts rather than raw logical ones (e.g. we admit to include 
12280  709 
attributes everywhere); operations on locales include merge and 
12964  710 
rename; support for implicit arguments (``structures''); simultaneous 
711 
typeinference over imports and text; see also HOL/ex/Locales.thy for 

712 
some examples; 

12078
4eb8061286e5
* Isar/Pure: proper integration with ``locales''; unlike the original
wenzelm
parents:
12034
diff
changeset

713 

12707
4013be8572c5
* Pure: localized 'lemmas', 'theorems', 'declare';
wenzelm
parents:
12690
diff
changeset

714 
* Pure: the following commands have been ``localized'', supporting a 
4013be8572c5
* Pure: localized 'lemmas', 'theorems', 'declare';
wenzelm
parents:
12690
diff
changeset

715 
target locale specification "(in name)": 'lemma', 'theorem', 
4013be8572c5
* Pure: localized 'lemmas', 'theorems', 'declare';
wenzelm
parents:
12690
diff
changeset

716 
'corollary', 'lemmas', 'theorems', 'declare'; the results will be 
4013be8572c5
* Pure: localized 'lemmas', 'theorems', 'declare';
wenzelm
parents:
12690
diff
changeset

717 
stored both within the locale and at the theory level (exported and 
4013be8572c5
* Pure: localized 'lemmas', 'theorems', 'declare';
wenzelm
parents:
12690
diff
changeset

718 
qualified by the locale name); 
4013be8572c5
* Pure: localized 'lemmas', 'theorems', 'declare';
wenzelm
parents:
12690
diff
changeset

719 

12964  720 
* Pure: theory goals may now be specified in ``long'' form, with 
721 
adhoc contexts consisting of arbitrary locale elements. for example 

722 
``lemma foo: fixes x assumes "A x" shows "B x"'' (local syntax and 

723 
definitions may be given, too); the result is a metalevel rule with 

724 
the context elements being discharged in the obvious way; 

725 

726 
* Pure: new proof command 'using' allows to augment currently used 

727 
facts after a goal statement ('using' is syntactically analogous to 

728 
'apply', but acts on the goal's facts only); this allows chained facts 

729 
to be separated into parts given before and after a claim, as in 

730 
``from a and b have C using d and e <proof>''; 

12078
4eb8061286e5
* Isar/Pure: proper integration with ``locales''; unlike the original
wenzelm
parents:
12034
diff
changeset

731 

11722  732 
* Pure: renamed "antecedent" case to "rule_context"; 
733 

12964  734 
* Pure: new 'judgment' command records explicit information about the 
735 
objectlogic embedding (used by several tools internally); no longer 

736 
use hardwired "Trueprop"; 

737 

11738  738 
* Pure: added 'corollary' command; 
739 

11722  740 
* Pure: fixed 'token_translation' command; 
741 

11899  742 
* Pure: removed obsolete 'exported' attribute; 
743 

11933  744 
* Pure: dummy pattern "_" in is/let is now automatically lifted over 
745 
bound variables: "ALL x. P x > Q x" (is "ALL x. _ > ?C x") 

11899  746 
supersedes more cumbersome ... (is "ALL x. _ x > ?C x"); 
747 

11952
b10f1e8862f4
* Pure: method 'atomize' presents local goal premises as objectlevel
wenzelm
parents:
11937
diff
changeset

748 
* Pure: method 'atomize' presents local goal premises as objectlevel 
b10f1e8862f4
* Pure: method 'atomize' presents local goal premises as objectlevel
wenzelm
parents:
11937
diff
changeset

749 
statements (atomic metalevel propositions); setup controlled via 
b10f1e8862f4
* Pure: method 'atomize' presents local goal premises as objectlevel
wenzelm
parents:
11937
diff
changeset

750 
rewrite rules declarations of 'atomize' attribute; example 
b10f1e8862f4
* Pure: method 'atomize' presents local goal premises as objectlevel
wenzelm
parents:
11937
diff
changeset

751 
application: 'induct' method with proper rule statements in improper 
b10f1e8862f4
* Pure: method 'atomize' presents local goal premises as objectlevel
wenzelm
parents:
11937
diff
changeset

752 
proof *scripts*; 
b10f1e8862f4
* Pure: method 'atomize' presents local goal premises as objectlevel
wenzelm
parents:
11937
diff
changeset

753 

12106
4a8558dbb6a0
* Isar/Pure: emulation of instantiation tactics (rule_tac, cut_tac,
wenzelm
parents:
12078
diff
changeset

754 
* Pure: emulation of instantiation tactics (rule_tac, cut_tac, etc.) 
4a8558dbb6a0
* Isar/Pure: emulation of instantiation tactics (rule_tac, cut_tac,
wenzelm
parents:
12078
diff
changeset

755 
now consider the syntactic context of assumptions, giving a better 
4a8558dbb6a0
* Isar/Pure: emulation of instantiation tactics (rule_tac, cut_tac,
wenzelm
parents:
12078
diff
changeset

756 
chance to get typeinference of the arguments right (this is 
4a8558dbb6a0
* Isar/Pure: emulation of instantiation tactics (rule_tac, cut_tac,
wenzelm
parents:
12078
diff
changeset

757 
especially important for locales); 
4a8558dbb6a0
* Isar/Pure: emulation of instantiation tactics (rule_tac, cut_tac,
wenzelm
parents:
12078
diff
changeset

758 

12312
f0f06950820d
* Isar/Pure: "sorry" no longer requires quick_and_dirty in interactive mode;
wenzelm
parents:
12280
diff
changeset

759 
* Pure: "sorry" no longer requires quick_and_dirty in interactive 
f0f06950820d
* Isar/Pure: "sorry" no longer requires quick_and_dirty in interactive mode;
wenzelm
parents:
12280
diff
changeset

760 
mode; 
f0f06950820d
* Isar/Pure: "sorry" no longer requires quick_and_dirty in interactive mode;
wenzelm
parents:
12280
diff
changeset

761 

12405
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

762 
* Pure/obtain: the formal conclusion "thesis", being marked as 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

763 
``internal'', may no longer be reference directly in the text; 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

764 
potential INCOMPATIBILITY, may need to use "?thesis" in rare 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

765 
situations; 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

766 

9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

767 
* Pure: generic 'sym' attribute which declares a rule both as pure 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

768 
'elim?' and for the 'symmetric' operation; 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

769 

12877
b9635eb8a448
* Isar/Pure: marginal comments ``'' may now occur just anywhere in the text;
wenzelm
parents:
12853
diff
changeset

770 
* Pure: marginal comments ``'' may now occur just anywhere in the 
b9635eb8a448
* Isar/Pure: marginal comments ``'' may now occur just anywhere in the text;
wenzelm
parents:
12853
diff
changeset

771 
text; the fixed correlation with particular command syntax has been 
b9635eb8a448
* Isar/Pure: marginal comments ``'' may now occur just anywhere in the text;
wenzelm
parents:
12853
diff
changeset

772 
discontinued; 
b9635eb8a448
* Isar/Pure: marginal comments ``'' may now occur just anywhere in the text;
wenzelm
parents:
12853
diff
changeset

773 

13023
f869b6822006
Added two paragraphs on "rules" method and code generator.
berghofe
parents:
12984
diff
changeset

774 
* Pure: new method 'rules' is particularly wellsuited for proof 
f869b6822006
Added two paragraphs on "rules" method and code generator.
berghofe
parents:
12984
diff
changeset

775 
search in intuitionistic logic; a bit slower than 'blast' or 'fast', 
f869b6822006
Added two paragraphs on "rules" method and code generator.
berghofe
parents:
12984
diff
changeset

776 
but often produces more compact proof terms with less detours; 
f869b6822006
Added two paragraphs on "rules" method and code generator.
berghofe
parents:
12984
diff
changeset

777 

12364
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

778 
* Pure/Provers/classical: simplified integration with pure rule 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

779 
attributes and methods; the classical "intro?/elim?/dest?" 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

780 
declarations coincide with the pure ones; the "rule" method no longer 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

781 
includes classically swapped intros; "intro" and "elim" methods no 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

782 
longer pick rules from the context; also got rid of ML declarations 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

783 
AddXIs/AddXEs/AddXDs; all of this has some potential for 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

784 
INCOMPATIBILITY; 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

785 

12405
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

786 
* Provers/classical: attribute 'swapped' produces classical inversions 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

787 
of introduction rules; 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

788 

12364
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

789 
* Provers/simplifier: 'simplified' attribute may refer to explicit 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

790 
rules instead of full simplifier context; 'iff' attribute handles 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

791 
conditional rules; 
11936
fef099613354
* Provers: 'simplified' attribute may refer to explicit rules instead
wenzelm
parents:
11933
diff
changeset

792 

11745
06cd8c3b5487
* HOL: 'typedef' now allows alternative names for Rep/Abs morphisms;
wenzelm
parents:
11738
diff
changeset

793 
* HOL: 'typedef' now allows alternative names for Rep/Abs morphisms; 
06cd8c3b5487
* HOL: 'typedef' now allows alternative names for Rep/Abs morphisms;
wenzelm
parents:
11738
diff
changeset

794 

11690  795 
* HOL: 'recdef' now fails on unfinished automated proofs, use 
11633  796 
"(permissive)" option to recover old behavior; 
797 

11933  798 
* HOL: 'inductive' no longer features separate (collective) attributes 
799 
for 'intros' (was found too confusing); 

800 

12405
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

801 
* HOL: properly declared induction rules less_induct and 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

802 
wf_induct_rule; 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

803 

11788
60054fee3c16
canonical 'cases'/'induct' rules for ntuples (n=3..7)
kleing
parents:
11745
diff
changeset

804 

11474  805 
*** HOL *** 
806 

11702  807 
* HOL: moved over to sane numeral syntax; the new policy is as 
808 
follows: 

809 

810 
 0 and 1 are polymorphic constants, which are defined on any 

811 
numeric type (nat, int, real etc.); 

812 

813 
 2, 3, 4, ... and 1, 2, 3, ... are polymorphic numerals, based 

814 
binary representation internally; 

815 

816 
 type nat has special constructor Suc, and generally prefers Suc 0 

817 
over 1::nat and Suc (Suc 0) over 2::nat; 

818 

12364
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

819 
This change may cause significant problems of INCOMPATIBILITY; here 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

820 
are some hints on converting existing sources: 
11702  821 

822 
 due to the new "num" token, "0" and "1" etc. are now atomic 

823 
entities, so expressions involving "" (unary or binary minus) need 

824 
to be spaced properly; 

825 

826 
 existing occurrences of "1" may need to be constraint "1::nat" or 

827 
even replaced by Suc 0; similar for old "2"; 

828 

829 
 replace "#nnn" by "nnn", and "#nnn" by "nnn"; 

830 

831 
 remove all special provisions on numerals in proofs; 

832 

13042  833 
* HOL: simp rules nat_number expand numerals on nat to Suc/0 
12837  834 
representation (depends on bin_arith_simps in the default context); 
835 

12736  836 
* HOL: symbolic syntax for x^2 (numeral 2); 
837 

12335
db4d5f498742
* HOL: the class of all HOL types is now called "type" rather than
wenzelm
parents:
12312
diff
changeset

838 
* HOL: the class of all HOL types is now called "type" rather than 
db4d5f498742
* HOL: the class of all HOL types is now called "type" rather than
wenzelm
parents:
12312
diff
changeset

839 
"term"; INCOMPATIBILITY, need to adapt references to this type class 
db4d5f498742
* HOL: the class of all HOL types is now called "type" rather than
wenzelm
parents:
12312
diff
changeset

840 
in axclass/classes, instance/arities, and (usually rare) occurrences 
db4d5f498742
* HOL: the class of all HOL types is now called "type" rather than
wenzelm
parents:
12312
diff
changeset

841 
in typings (of consts etc.); internally the class is called 
db4d5f498742
* HOL: the class of all HOL types is now called "type" rather than
wenzelm
parents:
12312
diff
changeset

842 
"HOL.type", ML programs should refer to HOLogic.typeS; 
db4d5f498742
* HOL: the class of all HOL types is now called "type" rather than
wenzelm
parents:
12312
diff
changeset

843 

12280  844 
* HOL/record package improvements: 
845 
 new derived operations "fields" to build a partial record section, 

846 
"extend" to promote a fixed record to a record scheme, and 

847 
"truncate" for the reverse; cf. theorems "xxx.defs", which are *not* 

848 
declared as simp by default; 

12587
3f3d2ffb5df5
HOL/record: shared operations ("more", "fields", etc.) now need to be
wenzelm
parents:
12564
diff
changeset

849 
 shared operations ("more", "fields", etc.) now need to be always 
3f3d2ffb5df5
HOL/record: shared operations ("more", "fields", etc.) now need to be
wenzelm
parents:
12564
diff
changeset

850 
qualified)  potential INCOMPATIBILITY; 
12280  851 
 removed "make_scheme" operations (use "make" with "extend")  
852 
INCOMPATIBILITY; 

11937  853 
 removed "more" class (simply use "term")  INCOMPATIBILITY; 
12253  854 
 provides cases/induct rules for use with corresponding Isar 
855 
methods (for concrete records, record schemes, concrete more 

12280  856 
parts, and schematic more parts  in that order); 
11930  857 
 internal definitions directly based on a lightweight abstract 
858 
theory of product types over typedef rather than datatype; 

859 

13023
f869b6822006
Added two paragraphs on "rules" method and code generator.
berghofe
parents:
12984
diff
changeset

860 
* HOL: generic code generator for generating executable ML code from 
f869b6822006
Added two paragraphs on "rules" method and code generator.
berghofe
parents:
12984
diff
changeset

861 
specifications; specific support for HOL constructs such as inductive 
f869b6822006
Added two paragraphs on "rules" method and code generator.
berghofe
parents:
12984
diff
changeset

862 
datatypes and sets, as well as recursive functions; can be invoked 
f869b6822006
Added two paragraphs on "rules" method and code generator.
berghofe
parents:
12984
diff
changeset

863 
via 'generate_code' theory section; 
f869b6822006
Added two paragraphs on "rules" method and code generator.
berghofe
parents:
12984
diff
changeset

864 

11933  865 
* HOL: canonical cases/induct rules for ntuples (n = 3..7); 
866 

13824  867 
* HOL: consolidated and renamed several theories. In particular: 
14731  868 
Ord.thy has been absorbed into HOL.thy 
869 
String.thy has been absorbed into List.thy 

870 

11802
1d5f5d2427d2
* HOL: concrete setsum syntax "\<Sum>i:A. b" == "setsum (%i. b) A"
wenzelm
parents:
11797
diff
changeset

871 
* HOL: concrete setsum syntax "\<Sum>i:A. b" == "setsum (%i. b) A" 
1d5f5d2427d2
* HOL: concrete setsum syntax "\<Sum>i:A. b" == "setsum (%i. b) A"
wenzelm
parents:
11797
diff
changeset

872 
(beware of argument permutation!); 
1d5f5d2427d2
* HOL: concrete setsum syntax "\<Sum>i:A. b" == "setsum (%i. b) A"
wenzelm
parents:
11797
diff
changeset

873 

11657  874 
* HOL: linorder_less_split superseded by linorder_cases; 
875 

12917  876 
* HOL/List: "nodups" renamed to "distinct"; 
12889  877 

11633  878 
* HOL: added "The" definite description operator; move Hilbert's "Eps" 
13824  879 
to peripheral theory "Hilbert_Choice"; some INCOMPATIBILITIES: 
880 
 Ex_def has changed, now need to use some_eq_ex 

11437  881 

11572  882 
* HOL: made split_all_tac safe; EXISTING PROOFS MAY FAIL OR LOOP, so 
883 
in this (rare) case use: 

884 

885 
delSWrapper "split_all_tac" 

886 
addSbefore ("unsafe_split_all_tac", unsafe_split_all_tac) 

887 

888 
* HOL: added safe wrapper "split_conv_tac" to claset; EXISTING PROOFS 

11474  889 
MAY FAIL; 
11361  890 

11572  891 
* HOL: introduced f^n = f o ... o f; warning: due to the limits of 
892 
Isabelle's type classes, ^ on functions and relations has too general 

893 
a domain, namely ('a * 'b) set and 'a => 'b; this means that it may be 

894 
necessary to attach explicit type constraints; 

11307  895 

12917  896 
* HOL/Relation: the prefix name of the infix "O" has been changed from 
897 
"comp" to "rel_comp"; INCOMPATIBILITY: a few theorems have been 

898 
renamed accordingly (eg "compI" > "rel_compI"). 

12489  899 

11487
95071c9e85a3
* HOL: syntax translations now work properly with numerals and records
wenzelm
parents:
11475
diff
changeset

900 
* HOL: syntax translations now work properly with numerals and records 
95071c9e85a3
* HOL: syntax translations now work properly with numerals and records
wenzelm
parents:
11475
diff
changeset

901 
expressions; 
11474  902 

12457
cbfc53e45476
* HOL: bounded abstraction now uses syntax "%" / "\<lambda>" instead
wenzelm
parents:
12405
diff
changeset

903 
* HOL: bounded abstraction now uses syntax "%" / "\<lambda>" instead 
cbfc53e45476
* HOL: bounded abstraction now uses syntax "%" / "\<lambda>" instead
wenzelm
parents:
12405
diff
changeset

904 
of "lam"  INCOMPATIBILITY; 
11474  905 

11933  906 
* HOL: got rid of some global declarations (potential INCOMPATIBILITY 
907 
for ML tools): const "()" renamed "Product_Type.Unity", type "unit" 

908 
renamed "Product_Type.unit"; 

11611  909 

12564  910 
* HOL: renamed rtrancl_into_rtrancl2 to converse_rtrancl_into_rtrancl 
911 

12924  912 
* HOL: removed obsolete theorem "optionE" (use "option.exhaust", or 
913 
the "cases" method); 

914 

12597
14822e4436bf
HOL/IMP and HOLCF/IMP updated and converted (Gerwin Klein);
wenzelm
parents:
12587
diff
changeset

915 
* HOL/GroupTheory: group theory examples including Sylow's theorem (by 
14822e4436bf
HOL/IMP and HOLCF/IMP updated and converted (Gerwin Klein);
wenzelm
parents:
12587
diff
changeset

916 
Florian Kammüller); 
14822e4436bf
HOL/IMP and HOLCF/IMP updated and converted (Gerwin Klein);
wenzelm
parents:
12587
diff
changeset

917 

12608
2df381faa787
* ZF/IMP: updated and converted to newstyle theory format;
wenzelm
parents:
12597
diff
changeset

918 
* HOL/IMP: updated and converted to newstyle theory format; several 
2df381faa787
* ZF/IMP: updated and converted to newstyle theory format;
wenzelm
parents:
12597
diff
changeset

919 
parts turned into readable document, with proper Isar proof texts and 
2df381faa787
* ZF/IMP: updated and converted to newstyle theory format;
wenzelm
parents:
12597
diff
changeset

920 
some explanations (by Gerwin Klein); 
12597
14822e4436bf
HOL/IMP and HOLCF/IMP updated and converted (Gerwin Klein);
wenzelm
parents:
12587
diff
changeset

921 

12734  922 
* HOLReal: added Complex_Numbers (by Gertrud Bauer); 
923 

12690  924 
* HOLHyperreal is now a logic image; 
925 

11611  926 

12022
9c3377b133c0
HOLCF: proper rep_datatype lift (see theory Lift); use plain induct_tac
wenzelm
parents:
11995
diff
changeset

927 
*** HOLCF *** 
9c3377b133c0
HOLCF: proper rep_datatype lift (see theory Lift); use plain induct_tac
wenzelm
parents:
11995
diff
changeset

928 

12622  929 
* Isar: consts/constdefs supports mixfix syntax for continuous 
930 
operations; 

931 

932 
* Isar: domain package adapted to newstyle theory format, e.g. see 

933 
HOLCF/ex/Dnat.thy; 

934 

935 
* theory Lift: proper use of rep_datatype lift instead of ML hacks  

12280  936 
potential INCOMPATIBILITY; now use plain induct_tac instead of former 
937 
lift.induct_tac, always use UU instead of Undef; 

12022
9c3377b133c0
HOLCF: proper rep_datatype lift (see theory Lift); use plain induct_tac
wenzelm
parents:
11995
diff
changeset

938 

12597
14822e4436bf
HOL/IMP and HOLCF/IMP updated and converted (Gerwin Klein);
wenzelm
parents:
12587
diff
changeset

939 
* HOLCF/IMP: updated and converted to newstyle theory; 
14822e4436bf
HOL/IMP and HOLCF/IMP updated and converted (Gerwin Klein);
wenzelm
parents:
12587
diff
changeset

940 

12022
9c3377b133c0
HOLCF: proper rep_datatype lift (see theory Lift); use plain induct_tac
wenzelm
parents:
11995
diff
changeset

941 

11474  942 
*** ZF *** 
943 

12622  944 
* Isar: proper integration of logicspecific tools and packages, 
945 
including theory commands '(co)inductive', '(co)datatype', 

946 
'rep_datatype', 'inductive_cases', as well as methods 'ind_cases', 

947 
'induct_tac', 'case_tac', and 'typecheck' (with attribute 'TC'); 

948 

949 
* theory Main no longer includes AC; for the Axiom of Choice, base 

950 
your theory on Main_ZFC; 

951 

952 
* the integer library now covers quotients and remainders, with many 

953 
laws relating division to addition, multiplication, etc.; 

12563  954 

12280  955 
* ZF/UNITY: Chandy and Misra's UNITY is now available in ZF, giving a 
956 
typeless version of the formalism; 

957 

13025  958 
* ZF/AC, Coind, IMP, Resid: updated and converted to newstyle theory 
959 
format; 

12608
2df381faa787
* ZF/IMP: updated and converted to newstyle theory format;
wenzelm
parents:
12597
diff
changeset

960 

12280  961 
* ZF/Induct: new directory for examples of inductive definitions, 
12608
2df381faa787
* ZF/IMP: updated and converted to newstyle theory format;
wenzelm
parents:
12597
diff
changeset

962 
including theory Multiset for multiset orderings; converted to 
2df381faa787
* ZF/IMP: updated and converted to newstyle theory format;
wenzelm
parents:
12597
diff
changeset

963 
newstyle theory format; 
12177
b1c16d685a99
* ZF: newstyle theory commands 'inductive', 'inductive_cases', and
wenzelm
parents:
12163
diff
changeset

964 

13025  965 
* ZF: many new theorems about lists, ordinals, etc.; 
12850  966 

11474  967 

968 
*** General *** 

969 

12280  970 
* Pure/kernel: metalevel proof terms (by Stefan Berghofer); reference 
971 
variable proof controls level of detail: 0 = no proofs (only oracle 

972 
dependencies), 1 = lemma dependencies, 2 = compact proof terms; see 

973 
also ref manual for further ML interfaces; 

974 

975 
* Pure/axclass: removed obsolete ML interface 

976 
goal_subclass/goal_arity; 

977 

978 
* Pure/syntax: new token syntax "num" for plain numerals (without "#" 

979 
of "xnum"); potential INCOMPATIBILITY, since 0, 1 etc. are now 

980 
separate tokens, so expressions involving minus need to be spaced 

981 
properly; 

982 

12312
f0f06950820d
* Isar/Pure: "sorry" no longer requires quick_and_dirty in interactive mode;
wenzelm
parents:
12280
diff
changeset

983 
* Pure/syntax: support nonoriented infixes, using keyword "infix" 
f0f06950820d
* Isar/Pure: "sorry" no longer requires quick_and_dirty in interactive mode;
wenzelm
parents:
12280
diff
changeset

984 
rather than "infixl" or "infixr"; 
f0f06950820d
* Isar/Pure: "sorry" no longer requires quick_and_dirty in interactive mode;
wenzelm
parents:
12280
diff
changeset

985 

f0f06950820d
* Isar/Pure: "sorry" no longer requires quick_and_dirty in interactive mode;
wenzelm
parents:
12280
diff
changeset

986 
* Pure/syntax: concrete syntax for dummy type variables admits genuine 
f0f06950820d
* Isar/Pure: "sorry" no longer requires quick_and_dirty in interactive mode;
wenzelm
parents:
12280
diff
changeset

987 
sort constraint specifications in type inference; e.g. "x::_::foo" 
f0f06950820d
* Isar/Pure: "sorry" no longer requires quick_and_dirty in interactive mode;
wenzelm
parents:
12280
diff
changeset

988 
ensures that the type of "x" is of sort "foo" (but not necessarily a 
f0f06950820d
* Isar/Pure: "sorry" no longer requires quick_and_dirty in interactive mode;
wenzelm
parents:
12280
diff
changeset

989 
type variable); 
12280  990 

991 
* Pure/syntax: print modes "type_brackets" and "no_type_brackets" 

992 
control output of nested => (types); the default behavior is 

993 
"type_brackets"; 

994 

995 
* Pure/syntax: builtin parse translation for "_constify" turns valued 

11817  996 
tokens into AST constants; 
11474  997 

12280  998 
* Pure/syntax: prefer later declarations of translations and print 
999 
translation functions; potential INCOMPATIBILITY: need to reverse 

1000 
multiple declarations for same syntax element constant; 

1001 

12832
c31b44286a8a
* Pure/show_hyps reset by default (in accordance to existing Isar practice);
wenzelm
parents:
12777
diff
changeset

1002 
* Pure/show_hyps reset by default (in accordance to existing Isar 
c31b44286a8a
* Pure/show_hyps reset by default (in accordance to existing Isar practice);
wenzelm
parents:
12777
diff
changeset

1003 
practice); 
c31b44286a8a
* Pure/show_hyps reset by default (in accordance to existing Isar practice);
wenzelm
parents:
12777
diff
changeset

1004 

12280  1005 
* Provers/classical: renamed addaltern to addafter, addSaltern to 
1006 
addSafter; 

1007 

1008 
* Provers/clasimp: ``iff'' declarations now handle conditional rules 

1009 
as well; 

12253  1010 

12538  1011 
* system: tested support for MacOS X; should be able to get Isabelle + 
1012 
Proof General to work in a plain Terminal after installing Poly/ML 

1013 
(e.g. from the Isabelle distribution area) and GNU bash alone 

1014 
(e.g. from http://www.apple.com); full X11, XEmacs and XSymbol 

1015 
support requires further installations, e.g. from 

1016 
http://fink.sourceforge.net/); 

1017 

12280  1018 
* system: support Poly/ML 4.1.1 (able to manage larger heaps); 
11551  1019 

12753
3a62df7ae926
* system: reduced base memory usage by Poly/ML (approx. 20 MB instead
wenzelm
parents:
12736
diff
changeset

1020 
* system: reduced base memory usage by Poly/ML (approx. 20 MB instead 
3a62df7ae926
* system: reduced base memory usage by Poly/ML (approx. 20 MB instead
wenzelm
parents:
12736
diff
changeset

1021 
of 40 MB), cf. ML_OPTIONS; 
3a62df7ae926
* system: reduced base memory usage by Poly/ML (approx. 20 MB instead
wenzelm
parents:
12736
diff
changeset

1022 

11633  1023 
* system: Proof General keywords specification is now part of the 
1024 
Isabelle distribution (see etc/isarkeywords.el); 

1025 

12728  1026 
* system: support for persistent Proof General sessions (refrain from 
1027 
outdating all loaded theories on startup); user may create writable 

1028 
logic images like this: ``isabelle q HOL Test''; 

12597
14822e4436bf
HOL/IMP and HOLCF/IMP updated and converted (Gerwin Klein);
wenzelm
parents:
12587
diff
changeset

1029 

11551  1030 
* system: smart selection of Isabelle process versus Isabelle 
11572  1031 
interface, accommodates caseinsensitive file systems (e.g. HFS+); may 
1032 
run both "isabelle" and "Isabelle" even if file names are badly 

1033 
damaged (executable inspects the case of the first letter of its own 

1034 
name); added separate "isabelleprocess" and "isabelleinterface"; 

11551  1035 

12472  1036 
* system: refrain from any attempt at filtering input streams; no 
1037 
longer support ``8bit'' encoding of old isabelle font, instead proper 

1038 
isolatin characters may now be used; the related isatools 

1039 
"symbolinput" and "nonascii" have disappeared as well; 

1040 

1041 
* system: removed old "xterm" interface (the print modes "xterm" and 

1042 
"xterm_color" are still available for direct use in a suitable 

1043 
terminal); 

1044 

11314  1045 

11169
98c2f741e32b
made split_all_tac safe introducing safe_full_simp_tac, EXISTING PROOFS MAY FAIL
oheimb
parents:
11130
diff
changeset

1046 

11062  1047 
New in Isabelle992 (February 2001) 
1048 
 

1049 

10224  1050 
*** Overview of INCOMPATIBILITIES *** 
1051 

11241  1052 
* HOL: please note that theories in the Library and elsewhere often use the 
1053 
newstyle (Isar) format; to refer to their theorems in an ML script you must 

12622  1054 
bind them to ML identifers by e.g. val thm_name = thm "thm_name"; 
11241  1055 

11043
2e3bbac8763b
HOL: inductive package no longer splits induction rule aggressively,
wenzelm
parents:
11016
diff
changeset

1056 
* HOL: inductive package no longer splits induction rule aggressively, 
2e3bbac8763b
HOL: inductive package no longer splits induction rule aggressively,
wenzelm
parents:
11016
diff
changeset

1057 
but only as far as specified by the introductions given; the old 
11130  1058 
format may be recovered via ML function complete_split_rule or attribute 
11043
2e3bbac8763b
HOL: inductive package no longer splits induction rule aggressively,
wenzelm
parents:
11016
diff
changeset

1059 
'split_rule (complete)'; 
2e3bbac8763b
HOL: inductive package no longer splits induction rule aggressively,
wenzelm
parents:
11016
diff
changeset

1060 

10998  1061 
* HOL: induct renamed to lfp_induct, lfp_Tarski to lfp_unfold, 
1062 
gfp_Tarski to gfp_unfold; 

10224  1063 

10288  1064 
* HOL: contrapos, contrapos2 renamed to contrapos_nn, contrapos_pp; 
1065 

10858  1066 
* HOL: infix "dvd" now has priority 50 rather than 70 (because it is a 
1067 
relation); infix "^^" has been renamed "``"; infix "``" has been 

1068 
renamed "`"; "univalent" has been renamed "single_valued"; 

10793  1069 

10998  1070 
* HOL/Real: "rinv" and "hrinv" replaced by overloaded "inverse" 
1071 
operation; 

1072 

10868  1073 
* HOLCF: infix "`" has been renamed "$"; the symbol syntax is \<cdot>; 
10856  1074 

10391  1075 
* Isar: 'obtain' no longer declares "that" fact as simp/intro; 
1076 

10401
58bb50f69497
* Isar/HOL: method 'induct' now handles nonatomic goals; as a
wenzelm
parents:
10391
diff
changeset

1077 
* Isar/HOL: method 'induct' now handles nonatomic goals; as a 
58bb50f69497
* Isar/HOL: method 'induct' now handles nonatomic goals; as a
wenzelm
parents:
10391
diff
changeset

1078 
consequence, it is no longer monotonic wrt. the local goal context 
58bb50f69497
* Isar/HOL: method 'induct' now handles nonatomic goals; as a
wenzelm
parents:
10391
diff
changeset

1079 
(which is now passed through the inductive cases); 
58bb50f69497
* Isar/HOL: method 'induct' now handles nonatomic goals; as a
wenzelm
parents:
10391
diff
changeset

1080 

10976
0e7cf6f9fa29
* Document preparation: renamed standard symbols \<ll> to \<lless> and
wenzelm
parents:
10966
diff
changeset

1081 
* Document preparation: renamed standard symbols \<ll> to \<lless> and 
0e7cf6f9fa29
* Document preparation: renamed standard symbols \<ll> to \<lless> and
wenzelm
parents:
10966
diff
changeset

1082 
\<gg> to \<ggreater>; 
0e7cf6f9fa29
* Document preparation: renamed standard symbols \<ll> to \<lless> and
wenzelm
parents:
10966
diff
changeset

1083 

10224  1084 

10245
87771e2f49fe
* HOL/Library: a collection of generic theories to be used together
wenzelm
parents:
10224
diff
changeset

1085 
*** Document preparation *** 
87771e2f49fe
* HOL/Library: a collection of generic theories to be used together
wenzelm
parents:
10224
diff
changeset

1086 

10858  1087 
* \isabellestyle{NAME} selects version of Isabelle output (currently 
1088 
available: are "it" for near mathmode beststyle output, "sl" for 

1089 
slanted text style, and "tt" for plain typewriter; if no 

1090 
\isabellestyle command is given, output is according to slanted 

1091 
typewriter); 

1092 

10322
df38c61bf541
* support sub/super scripts (for single symbols only), input syntax is
wenzelm
parents:
10306
diff
changeset

1093 
* support sub/super scripts (for single symbols only), input syntax is 
df38c61bf541
* support sub/super scripts (for single symbols only), input syntax is
wenzelm
parents:
10306
diff
changeset

1094 
like this: "A\<^sup>*" or "A\<^sup>\<star>"; 
df38c61bf541
* support sub/super scripts (for single symbols only), input syntax is
wenzelm
parents:
10306
diff
changeset

1095 

10858  1096 
* some more standard symbols; see Appendix A of the system manual for 
11062  1097 
the complete list of symbols defined in isabellesym.sty; 
10858  1098 

10998  1099 
* improved isabelle style files; more abstract symbol implementation 
1100 
(should now use \isamath{...} and \isatext{...} in custom symbol 

1101 
definitions); 

1102 

10634  1103 
* antiquotation @{goals} and @{subgoals} for output of *dynamic* goals 
1104 
state; Note that presentation of goal states does not conform to 

1105 
actual humanreadable proof documents. Please do not include goal 

1106 
states into document output unless you really know what you are doing! 

10322
df38c61bf541
* support sub/super scripts (for single symbols only), input syntax is
wenzelm
parents:
10306
diff
changeset

1107 

11062  1108 
* proper indentation of antiquoted output with proportional LaTeX 
1109 
fonts; 

10862  1110 

11050
ac5709ac50b9
* no_document ML operator temporarily disables LaTeX document
wenzelm
parents:
11043
diff
changeset

1111 
* no_document ML operator temporarily disables LaTeX document 
ac5709ac50b9
* no_document ML operator temporarily disables LaTeX document
wenzelm
parents:
11043
diff
changeset

1112 
generation; 
ac5709ac50b9
* no_document ML operator temporarily disables LaTeX document
wenzelm
parents:
11043
diff
changeset

1113 

11062  1114 
* isatool unsymbolize tunes sources for plain ASCII communication; 
1115 

10322
df38c61bf541
* support sub/super scripts (for single symbols only), input syntax is
wenzelm
parents:
10306
diff
changeset

1116 

10306
b0ab988a27a9
* HOL: default proof step now includes 'intro_classes';
wenzelm
parents:
10288
diff
changeset

1117 
*** Isar *** 
b0ab988a27a9
* HOL: default proof step now includes 'intro_classes';
wenzelm
parents:
10288
diff
changeset

1118 

10547  1119 
* Pure: Isar now suffers initial goal statements to contain unbound 
1120 
schematic variables (this does not conform to actual readable proof 

1121 
documents, due to unpredictable outcome and noncompositional proof 

1122 
checking); users who know what they are doing may use schematic goals 

1123 
for Prologstyle synthesis of proven results; 

1124 

10391  1125 
* Pure: assumption method (an implicit finishing) now handles actual 
1126 
rules as well; 

1127 

1128 
* Pure: improved 'obtain'  moved to Pure, insert "that" into 

1129 
initial goal, declare "that" only as Pure intro (only for single 

1130 
steps); the "that" rule assumption may now be involved in implicit 

1131 
finishing, thus ".." becomes a feasible for trivial obtains; 

1132 

1133 
* Pure: default proof step now includes 'intro_classes'; thus trivial 

1134 
instance proofs may be performed by ".."; 

1135 

1136 
* Pure: ?thesis / ?this / "..." now work for pure metalevel 

1137 
statements as well; 

10306
b0ab988a27a9
* HOL: default proof step now includes 'intro_classes';
wenzelm
parents:
10288
diff
changeset

1138 

11097  1139 
* Pure: more robust selection of calculational rules; 
1140 

10858  1141 
* Pure: the builtin notion of 'finished' goal now includes the ==refl 
1142 
rule (as well as the assumption rule); 

1143 

1144 
* Pure: 'thm_deps' command visualizes dependencies of theorems and 

1145 
lemmas, using the graph browser tool; 

1146 

10944  1147 
* Pure: predict failure of "show" in interactive mode; 
1148 

11016
8f8ba41a5e7a
* Pure: 'thms_containing' now takes actual terms as arguments;
wenzelm
parents:
10998
diff
changeset

1149 
* Pure: 'thms_containing' now takes actual terms as arguments; 
8f8ba41a5e7a
* Pure: 'thms_containing' now takes actual terms as arguments;
wenzelm
parents:
10998
diff
changeset

1150 

10401
58bb50f69497
* Isar/HOL: method 'induct' now handles nonatomic goals; as a
wenzelm
parents:
10391
diff
changeset

1151 
* HOL: improved method 'induct'  now handles nonatomic goals 
58bb50f69497
* Isar/HOL: method 'induct' now handles nonatomic goals; as a
wenzelm
parents:
10391
diff
changeset

1152 
(potential INCOMPATIBILITY); tuned error handling; 
58bb50f69497
* Isar/HOL: method 'induct' now handles nonatomic goals; as a
wenzelm
parents:
10391
diff
changeset

1153 

10557  1154 
* HOL: cases and induct rules now provide explicit hints about the 
10547  1155 
number of facts to be consumed (0 for "type" and 1 for "set" rules); 
1156 
any remaining facts are inserted into the goal verbatim; 

1157 

10858  1158 
* HOL: local contexts (aka cases) may now contain term bindings as 
1159 
well; the 'cases' and 'induct' methods new provide a ?case binding for 

1160 
the result to be shown in each case; 

1161 

10770  1162 
* HOL: added 'recdef_tc' command; 
1163 

11016
8f8ba41a5e7a
* Pure: 'thms_containing' now takes actual terms as arguments;
wenzelm
parents:
10998
diff
changeset

1164 
* isatool convert assists in eliminating legacy ML scripts; 
8f8ba41a5e7a
* Pure: 'thms_containing' now takes actual terms as arguments;
wenzelm
parents:
10998
diff
changeset

1165 

10306
b0ab988a27a9
* HOL: default proof step now includes 'intro_classes';
wenzelm
parents:
10288
diff
changeset

1166 

10245
87771e2f49fe
* HOL/Library: a collection of generic theories to be used together
wenzelm
parents:
10224
diff
changeset

1167 
*** HOL *** 
87771e2f49fe
* HOL/Library: a collection of generic theories to be used together
wenzelm
parents:
10224
diff
changeset

1168 

87771e2f49fe
* HOL/Library: a collection of generic theories to be used together
wenzelm
parents:
10224
diff
changeset

1169 
* HOL/Library: a collection of generic theories to be used together 
87771e2f49fe
* HOL/Library: a collection of generic theories to be used together
wenzelm
parents:
10224
diff
changeset

1170 
with main HOL; the theory loader path already includes this directory 
87771e2f49fe
* HOL/Library: a collection of generic theories to be used together
wenzelm
parents:
10224
diff
changeset

1171 
by default; the following existing theories have been moved here: 
87771e2f49fe
* HOL/Library: a collection of generic theories to be used together
wenzelm
parents:
10224
diff
changeset

1172 
HOL/Induct/Multiset, HOL/Induct/Acc (as Accessible_Part), HOL/While 
10337  1173 
(as While_Combinator), HOL/Lex/Prefix (as List_Prefix); 
10245
87771e2f49fe
* HOL/Library: a collection of generic theories to be used together
wenzelm
parents:
10224
diff
changeset

1174 

10966  1175 
* HOL/Unix: "Some aspects of Unix filesystem security", a typical 
1176 
modelling and verification task performed in Isabelle/HOL + 

1177 
Isabelle/Isar + Isabelle document preparation (by Markus Wenzel). 

1178 

11094  1179 
* HOL/Algebra: special summation operator SUM no longer exists, it has 
1180 
been replaced by setsum; infix 'assoc' now has priority 50 (like 

1181 
'dvd'); axiom 'one_not_zero' has been moved from axclass 'ring' to 

1182 
'domain', this makes the theory consistent with mathematical 

1183 
literature; 

1184 

10514  1185 
* HOL basics: added overloaded operations "inverse" and "divide" 
10726  1186 
(infix "/"), syntax for generic "abs" operation, generic summation 
11094  1187 
operator \<Sum>; 
10452
abeefb0a79ae
* added overloaded operations "inverse" and "divide" (infix "/");
wenzelm
parents:
10428
diff
changeset

1188 

10391  1189 
* HOL/typedef: simplified package, provide more useful rules (see also 
1190 
HOL/subset.thy); 

1191 

10915
6b66a8a530ce
* HOL/datatype: induction rule for arbitrarily branching datatypes is
wenzelm
parents:
10868
diff
changeset

1192 
* HOL/datatype: induction rule for arbitrarily branching datatypes is 
6b66a8a530ce
* HOL/datatype: induction rule for arbitrarily branching datatypes is
wenzelm
parents:
10868
diff
changeset

1193 
now expressed as a proper nested rule (oldstyle tactic scripts may 
6b66a8a530ce
* HOL/datatype: induction rule for arbitrarily branching datatypes is
wenzelm
parents:
10868
diff
changeset

1194 
require atomize_strip_tac to cope with nonatomic premises); 
6b66a8a530ce
* HOL/datatype: induction rule for arbitrarily branching datatypes is
wenzelm
parents:
10868
diff
changeset

1195 

6b66a8a530ce
* HOL/datatype: induction rule for arbitrarily branching datatypes is
wenzelm
parents:
10868
diff
changeset

1196 
* HOL: renamed theory "Prod" to "Product_Type", renamed "split" rule 
6b66a8a530ce
* HOL/datatype: induction rule for arbitrarily branching datatypes is
wenzelm
parents:
10868
diff
changeset

1197 
to "split_conv" (old name still available for compatibility); 
6b66a8a530ce
* HOL/datatype: induction rule for arbitrarily branching datatypes is
wenzelm
parents:
10868
diff
changeset

1198 

6b66a8a530ce
* HOL/datatype: induction rule for arbitrarily branching datatypes is
wenzelm
parents:
10868
diff
changeset

1199 
* HOL: improved concrete syntax for strings (e.g. allows translation 
6b66a8a530ce
* HOL/datatype: induction rule for arbitrarily branching datatypes is
wenzelm
parents:
10868
diff
changeset

1200 
rules with string literals); 
6b66a8a530ce
* HOL/datatype: induction rule for arbitrarily branching datatypes is
wenzelm
parents:
10868
diff
changeset

1201 

12245  1202 
* HOLRealHyperreal: this extends HOLReal with the hyperreals 
1203 
and Fleuriot's mechanization of analysis, including the transcendental 

1204 
functions for the reals; 

10756  1205 

11094  1206 
* HOL/Real, HOL/Hyperreal: improved arithmetic simplification; 
10391  1207 

10858  1208 

10474  1209 
*** CTT *** 
1210 

10547  1211 
* CTT: xsymbol support for Pi, Sigma, >, : (membership); note that 
1212 
"lam" is displayed as TWO lambdasymbols 

10474  1213 

10547  1214 
* CTT: theory Main now available, containing everything (that is, Bool 
1215 
and Arith); 

1216 

10474  1217 

10391  1218 
*** General *** 
1219 

10547  1220 
* Pure: the Simplifier has been implemented properly as a derived rule 
1221 
outside of the actual kernel (at last!); the overall performance 

1222 
penalty in practical applications is about 50%, while reliability of 

1223 
the Isabelle inference kernel has been greatly improved; 

1224 

11112  1225 
* print modes "brackets" and "no_brackets" control output of nested => 
1226 
(types) and ==> (props); the default behaviour is "brackets"; 

1227 

10391  1228 
* Provers: fast_tac (and friends) now handle actual objectlogic rules 
1229 
as assumptions as well; 

1230 

11124  1231 
* system: support Poly/ML 4.0; 
1232 

1233 
* system: isatool install handles KDE version 1 or 2; 

1234 

10391  1235 

10245
87771e2f49fe
* HOL/Library: a collection of generic theories to be used together
wenzelm
parents:
10224
diff
changeset

1236 

10103  1237 
New in Isabelle991 (October 2000) 
1238 
 

8015  1239 

10003  1240 
*** Overview of INCOMPATIBILITIES *** 
8014  1241 

8848  1242 
* HOL: simplification of natural numbers is much changed; to partly 
1243 
recover the old behaviour (e.g. to prevent n+n rewriting to #2*n) 

1244 
issue the following ML commands: 

1245 

1246 
Delsimprocs Nat_Numeral_Simprocs.cancel_numerals; 

1247 
Delsimprocs [Nat_Numeral_Simprocs.combine_numerals]; 

8788  1248 

10129  1249 
* HOL: simplification no longer dives into caseexpressions; this is 
1250 
controlled by "t.weak_case_cong" for each datatype t; 

10003  1251 

1252 
* HOL: nat_less_induct renamed to less_induct; 

1253 

1254 
* HOL: systematic renaming of the SOME (Eps) rules, may use isatool 

1255 
fixsome to patch .thy and .ML sources automatically; 

8967  1256 

10003  1257 
select_equality > some_equality 
1258 
select_eq_Ex > some_eq_ex 

1259 
selectI2EX > someI2_ex 

1260 
selectI2 > someI2 

1261 
selectI > someI 

1262 
select1_equality > some1_equality 

1263 
Eps_sym_eq > some_sym_eq_trivial 

1264 
Eps_eq > some_eq_trivial 

1265 

1266 
* HOL: exhaust_tac on datatypes superceded by new generic case_tac; 

1267 

1268 
* HOL: removed obsolete theorem binding expand_if (refer to split_if 

1269 
instead); 

1270 

1271 
* HOL: the recursion equations generated by 'recdef' are now called 

1272 
f.simps instead of f.rules; 

1273 

1274 
* HOL: qed_spec_mp now also handles bounded ALL as well; 

1275 

1276 
* HOL: 0 is now overloaded, so the type constraint ":: nat" may 

1277 
sometimes be needed; 

1278 

1279 
* HOL: the constant for "f``x" is now "image" rather than "op ``"; 

8014  1280 

10065  1281 
* HOL: the constant for "f``x" is now "vimage" rather than "op ``"; 
1282 

9330
6861e3b00155
HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents:
9288
diff
changeset

1283 
* HOL: the disjoint sum is now "<+>" instead of "Plus"; the cartesian 
6861e3b00155
HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents:
9288
diff
changeset

1284 
product is now "<*>" instead of "Times"; the lexicographic product is 
6861e3b00155
HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents:
9288
diff
changeset

1285 
now "<*lex*>" instead of "**"; 
8705  1286 

10003  1287 
* HOL: theory Sexp is now in HOL/Induct examples (it used to be part 
1288 
of main HOL, but was unused); better use HOL's datatype package; 

9971  1289 

10137
d1c2bef01e2f
removed "symbols" syntax for constant "override";
wenzelm
parents:
10129
diff
changeset

1290 
* HOL: removed "symbols" syntax for constant "override" of theory Map; 
d1c2bef01e2f
removed "symbols" syntax for constant "override";
wenzelm
parents:
10129
diff
changeset

1291 
the old syntax may be recovered as follows: 
d1c2bef01e2f
removed "symbols" syntax for constant "override";
wenzelm
parents:
10129
diff
changeset

1292 

d1c2bef01e2f
removed "symbols" syntax for constant "override";
wenzelm
parents:
10129
diff
changeset

1293 
syntax (symbols) 
d1c2bef01e2f
removed "symbols" syntax for constant "override";
wenzelm
parents:
10129
diff
changeset

1294 
override :: "('a ~=> 'b) => ('a ~=> 'b) => ('a ~=> 'b)" 
d1c2bef01e2f
removed "symbols" syntax for constant "override";
wenzelm
parents:
10129
diff
changeset

1295 
(infixl "\\<oplus>" 100) 
d1c2bef01e2f
removed "symbols" syntax for constant "override";
wenzelm
parents:
10129
diff
changeset

1296 

8848  1297 
* HOL/Real: "rabs" replaced by overloaded "abs" function; 
1298 

8887
c0c583ce0b0b
* HOL/ML: even fewer consts are declared as global (see theories Ord,
wenzelm
parents:
8848
diff
changeset

1299 
* HOL/ML: even fewer consts are declared as global (see theories Ord, 
c0c583ce0b0b
* HOL/ML: even fewer consts are declared as global (see theories Ord,
wenzelm
parents:
8848
diff
changeset

1300 
Lfp, Gfp, WF); this only affects ML packages that refer to const names 
c0c583ce0b0b
* HOL/ML: even fewer consts are declared as global (see theories Ord,
wenzelm
parents:
8848
diff
changeset

1301 
internally; 
c0c583ce0b0b
* HOL/ML: even fewer consts are declared as global (see theories Ord,
wenzelm
parents:
8848
diff
changeset

1302 

10003  1303 
* HOL and ZF: syntax for quotienting wrt an equivalence relation 
1304 
changed from A/r to A//r; 

9908  1305 

10003  1306 
* ZF: new treatment of arithmetic (nat & int) may break some old 
1307 
proofs; 

8921
7c04c98132c4
* Pure: changed syntax of local blocks from {{ }} to { };
wenzelm
parents:
8887
diff
changeset

1308 

10003  1309 
* Isar: renamed some attributes (RS > THEN, simplify > simplified, 
1310 
rulify > rule_format, elimify > elim_format, ...); 

9542  1311 

9941
fe05af7ec816
renamed atts: rulify to rule_format, elimify to elim_format;
wenzelm
parents:
9937
diff
changeset

1312 
* Isar/Provers: intro/elim/dest attributes changed; renamed 
fe05af7ec816
renamed atts: rulify to rule_format, elimify to elim_format;
wenzelm
parents:
9937
diff
changeset

1313 
intro/intro!/intro!! flags to intro!/intro/intro? (in most cases, one 
9937  1314 
should have to change intro!! to intro? only); replaced "delrule" by 
1315 
"rule del"; 

9437
93e91040c286
* Isar/Provers: intro/elim/dest attributes: changed
wenzelm
parents:
9402
diff
changeset

1316 

9612  1317 
* Isar/HOL: renamed "intrs" to "intros" in inductive definitions; 
1318 

9437
93e91040c286
* Isar/Provers: intro/elim/dest attributes: changed
wenzelm
parents:
9402
diff
changeset

1319 
* Provers: strengthened force_tac by using new first_best_tac; 
9402  1320 

10003  1321 
* LaTeX document preparation: several changes of isabelle.sty (see 
1322 
lib/texinputs); 

8729
094dbd0fad0c
* improved name spaces: ambiguous output is qualified; support for
wenzelm
parents:
8705
diff
changeset

1323 

8014  1324 

8487  1325 
*** Document preparation *** 
8358
a57d72b5d272
* isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents:
8283
diff
changeset

1326 

9198
0ab3c81e9425
* formal comments (text blocks etc.) in newstyle theories may now
wenzelm
parents:
9185
diff
changeset

1327 
* formal comments (text blocks etc.) in newstyle theories may now 
9753  1328 
contain antiquotations of thm/prop/term/typ/text to be presented 
1329 
according to latex print mode; concrete syntax is like this: 

1330 
@{term[show_types] "f(x) = a + x"}; 

9198
0ab3c81e9425
* formal comments (text blocks etc.) in newstyle theories may now
wenzelm
parents:
9185
diff
changeset

1331 

8358
a57d72b5d272
* isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents:
8283
diff
changeset

1332 
* isatool mkdir provides easy setup of Isabelle session directories, 
8518  1333 
including proper document sources; 
8358
a57d72b5d272
* isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents:
8283
diff
changeset

1334 

a57d72b5d272
* isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents:
8283
diff
changeset

1335 
* generated LaTeX sources are now deleted after successful run 
a57d72b5d272
* isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents:
8283
diff
changeset

1336 
(isatool document c); may retain a copy somewhere else via D option 
a57d72b5d272
* isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents:
8283
diff
changeset

1337 
of isatool usedir; 
a57d72b5d272
* isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents:
8283
diff
changeset

1338 

8566  1339 
* isatool usedir D now lets isatool latex o sty update the Isabelle 
10003  1340 
style files, achieving selfcontained LaTeX sources and simplifying 
1341 
LaTeX debugging; 

8566  1342 

8518  1343 
* oldstyle theories now produce (crude) LaTeX output as well; 
8358
a57d72b5d272
* isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents:
8283
diff
changeset

1344 

9057
af1ca1acf292
* browser info session directories are now selfcontained (may be put
wenzelm
parents:
9052
diff
changeset

1345 
* browser info session directories are now selfcontained (may be put 
9437
93e91040c286
* Isar/Provers: intro/elim/dest attributes: changed
wenzelm
parents:
9402
diff
changeset

1346 
on WWW server seperately); improved graphs of nested sessions; removed 
93e91040c286
* Isar/Provers: intro/elim/dest attributes: changed
wenzelm
parents:
9402
diff
changeset

1347 
graph for 'all sessions'; 
9057
af1ca1acf292
* browser info session directories are now selfcontained (may be put
wenzelm
parents:
9052
diff
changeset

1348 

10003  1349 
* several improvements in isabelle style files; \isabellestyle{it} 
1350 
produces fake math mode output; \isamarkupheader is now \section by 

1351 
default; see lib/texinputs/isabelle.sty etc.; 

9489
aa757b35b129
* blast(_tac) now handles actual objectlogic rules as assumptions;
wenzelm
parents:
9457
diff
changeset

1352 

8358
a57d72b5d272
* isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents:
8283
diff
changeset

1353 

8184  1354 
*** Isar *** 
1355 

10003  1356 
* Isar/Pure: local results and corresponding term bindings are now 
1357 
subject to HindleyMilner polymorphism (similar to ML); this 

1358 
accommodates incremental typeinference very nicely; 

8283
0a319c5746eb
* Pure now provides its own version of intro/elim/dest attributes;
wenzelm
parents:
8271
diff
changeset

1359 

10003  1360 
* Isar/Pure: new derived language element 'obtain' supports 
1361 
generalized existence reasoning; 

8621
8ba0f90f6f35
* Isar/Pure: local results and corresponding term bindings are now
wenzelm
parents:
8603
diff
changeset

1362 

10003  1363 
* Isar/Pure: new calculational elements 'moreover' and 'ultimately' 
1364 
support accumulation of results, without applying any rules yet; 

1365 
useful to collect intermediate results without explicit name 

1366 
references, and for use with transitivity rules with more than 2 

1367 
premises; 

8184  1368 

10003  1369 
* Isar/Pure: scalable support for caseanalysis type proofs: new 
1370 
'case' language element refers to local contexts symbolically, as 

1371 
produced by certain proof methods; internally, case names are attached 

1372 
to theorems as "tags"; 

8440
d66f0f14b1ca
* HOL: exhaust_tac on datatypes superceded by new case_tac;
wenzelm
parents:
8425
diff
changeset

1373 

10003  1374 
* Isar/Pure: theory command 'hide' removes declarations from 
9330
6861e3b00155
HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents:
9288
diff
changeset

1375 
class/type/const name spaces; 
6861e3b00155
HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents:
9288
diff
changeset

1376 

10003  1377 
* Isar/Pure: theory command 'defs' supports option "(overloaded)" to 
9330
6861e3b00155
HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents:
9288
diff
changeset

1378 
indicate potential overloading; 
6861e3b00155
HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents:
9288
diff
changeset

1379 

10003  1380 
* Isar/Pure: changed syntax of local blocks from {{ }} to { }; 
8621
8ba0f90f6f35
* Isar/Pure: local results and corresponding term bindings are now
wenzelm
parents:
8603
diff
changeset

1381 

10003  1382 
* Isar/Pure: syntax of sorts made 'inner', i.e. have to write 
1383 
"{a,b,c}" instead of {a,b,c}; 

9011
0cfc347f8d19
Isar/Pure: removed obsolete 'transfer' attribute (transfer of thms to
wenzelm
parents:
8994
diff
changeset

1384 

10003  1385 
* Isar/Pure now provides its own version of intro/elim/dest 
1386 
attributes; useful for building new logics, but beware of confusion 

1387 
with the version in Provers/classical; 

9612  1388 

10003  1389 
* Isar/Pure: the local context of (nonatomic) goals is provided via 
1390 
case name 'antecedent'; 

8440
d66f0f14b1ca
* HOL: exhaust_tac on datatypes superceded by new case_tac;
wenzelm
parents:
8425
diff
changeset

1391 

10003  1392 
* Isar/Pure: removed obsolete 'transfer' attribute (transfer of thms 
1393 
to the current context is now done automatically); 

9383
c21fa1c48de0
* HOL: removed obsolete expand_if = split_if; theorems if_splits =
wenzelm
parents:
9349
diff
changeset

1394 

10003  1395 
* Isar/Pure: theory command 'method_setup' provides a simple interface 
1396 
for definining proof methods in ML; 

9612  1397 

10003  1398 
* Isar/Provers: intro/elim/dest attributes changed; renamed 
9941
fe05af7ec816
renamed atts: rulify to rule_format, elimify to elim_format;
wenzelm
parents:
9937
diff
changeset

1399 
intro/intro!/intro!! flags to intro!/intro/intro? (INCOMPATIBILITY, in 
fe05af7ec816
renamed atts: rulify to rule_format, elimify to elim_format;
wenzelm
parents:
9937
diff
changeset

1400 
most cases, one should have to change intro!! to intro? only); 
fe05af7ec816
renamed atts: rulify to rule_format, elimify to elim_format;
wenzelm
parents:
9937
diff
changeset

1401 
replaced "delrule" by "rule del"; 
8283
0a319c5746eb
* Pure now provides its own version of intro/elim/dest attributes;
wenzelm
parents:
8271
diff
changeset

1402 

10003  1403 
* Isar/Provers: new 'hypsubst' method, plain 'subst' method and 
1404 
'symmetric' attribute (the latter supercedes [RS sym]); 

1405 

1406 
* Isar/Provers: splitter support (via 'split' attribute and 'simp' 

1407 
method modifier); 'simp' method: 'only:' modifier removes loopers as 
