author  nipkow 
Thu, 15 Jul 2004 13:24:45 +0200  
changeset 15046  d6a4c3992e9d 
parent 15044  f224d27bb1f8 
child 15050  e02f678887bb 
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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* Pure: considerably improved version of 'constdefs' command. Now 
14731  10 
performs automatic typeinference of declared constants; additional 
11 
support for local structure declarations (cf. locales and HOL 

12 
records), see also isarref manual. Potential INCOMPATIBILITY: need 

13 
to observe strictly sequential dependencies of definitions within a 

14 
single 'constdefs' section; moreover, the declared name needs to be 

15 
an identifier. If all fails, consider to fall back on 'consts' and 

16 
'defs' separately. 

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* Pure: improved indexed syntax and implicit structures. First of 
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all, indexed syntax provides a notational device for subscripted 
20 
application, using the new syntax \<^bsub>term\<^esub> for arbitrary 

21 
expressions. Secondly, in a local context with structure 

22 
declarations, number indexes \<^sub>n or the empty index (default 

23 
number 1) refer to a certain fixed variable implicitly; option 

24 
show_structs controls printing of implicit structures. Typical 

25 
applications of these concepts involve record types and locales. 

26 

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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  35 
* Pure: removed obsolete type class "logic", use the top sort {} 
36 
instead. Note that nonlogical types should be declared as 

37 
'nonterminals' rather than 'types'. INCOMPATIBILITY for new 

38 
objectlogic specifications. 

39 

15022  40 
* Pure: print_tac now outputs the goal through the trace channel. 
41 

42 
* Pure: reference Namespace.unique_names included. If true the 

43 
(shortest) namespaceprefix is printed to disambiguate conflicts (as 

44 
yet). If false the first entry wins (as during parsing). Default 

45 
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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82 

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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 provide option 'locale=NAME';
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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  96 
fold_commute}, for example. 
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14934  98 
* Document preparation: commands 'display_drafts' and 'print_drafts' 
99 
perform simple output of raw sources. Only those symbols that do 

100 
not require additional LaTeX packages (depending on comments in 

101 
isabellesym.sty) are displayed properly, everything else is left 

102 
verbatim. We use isatool display and isatool print as front ends; 

103 
these are subject to the DVI_VIEWER and PRINT_COMMAND settings, 

104 
respectively. 

105 

14917  106 
* ML: output via the Isabelle channels of writeln/warning/error 
107 
etc. is now passed through Output.output, with a hook for arbitrary 

108 
transformations depending on the print_mode (cf. Output.add_mode  

109 
the first active mode that provides a output function wins). 

110 
Already formatted output may be embedded into further text via 

111 
Output.raw; the result of Pretty.string_of/str_of and derived 

112 
functions (string_of_term/cterm/thm etc.) is already marked raw to 

113 
accommodate easy composition of diagnostic messages etc. 

114 
Programmers rarely need to care about Output.output or Output.raw at 

115 
all, with some notable exceptions: Output.output is required when 

116 
bypassing the standard channels (writeln etc.), or in token 

117 
translations to produce properly formatted results; Output.raw is 

118 
required when capturing already output material that will eventually 

14972  119 
be presented to the user a second time. For the default print mode, 
120 
both Output.output and Output.raw have no effect. 

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*** HOL *** 
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14731  125 
* HOL/record: reimplementation of records. Improved scalability for 
126 
records with many fields, avoiding performance problems for type 

127 
inference. Records are no longer composed of nested field types, but 

128 
of nested extension types. Therefore the record type only grows 

129 
linear in the number of extensions and not in the number of fields. 

130 
The toplevel (users) view on records is preserved. Potential 

131 
INCOMPATIBILITY only in strange cases, where the theory depends on 

132 
the old record representation. The type generated for a record is 

133 
called <record_name>_ext_type. 

134 

15022  135 
* HOL/record: Reference record_quick_and_dirty_sensitive can be 
136 
enabled to skip the proofs triggered by a record definition or a 

137 
simproc (if quick_and_dirty is enabled). Definitions of large 

138 
records can take quite long. 

139 

140 
* HOL/record: "record_upd_simproc" for simplification of multiple 

141 
record updates enabled by default. Moreover, trivial updates are 

142 
also removed: r(x := x r) = r. INCOMPATIBILITY: old proofs break 

143 
occasionally, since simplification is more powerful by default. 

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14878  145 
* HOL: symbolic syntax of Hilbert Choice Operator is now as follows: 
146 

147 
syntax (epsilon) 

148 
"_Eps" :: "[pttrn, bool] => 'a" ("(3\<some>_./ _)" [0, 10] 10) 

149 

150 
The symbol \<some> is displayed as the alternative epsilon of LaTeX 

151 
and xsymbol; use option 'm epsilon' to get it actually printed. 

152 
Moreover, the mathematically important symbolic identifier 

153 
\<epsilon> becomes available as variable, constant etc. 

154 

15046  155 
* HOL/SetInterval: The syntax for open intervals has changed: 
156 

157 
Old New 

158 
{..n(} > {..<n} 

159 
{)n..} > {n<..} 

160 
{m..n(} > {m..<n} 

161 
{)m..n} > {m<..n} 

162 
{)m..n(} > {m<..<n} 

163 

164 
The old syntax is still supported but will disappear in the future. 

165 
For conversion use the following emacs search and replace patterns: 

166 

167 
{)\([^\.]*\)\.\. > {\1<\.\.} 

168 
\.\.\([^(}]*\)(} > \.\.<\1} 

169 

170 
They are not perfect but work quite well. 

171 

172 
* HOL: There is new syntax for summation over finite sets: 

173 

174 
'\<Sum>x  P. e' is the same as 'setsum (%x. e) {x. P}' 

175 
'\<Sum>x<k. e' is the same as 'setsum (%x. e) {..<k}' 

176 

177 
Function 'Summation' over nat is gone, its syntax '\<Sum>i<k. e' 

178 
now translates into 'setsum' as above. 

179 

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*** HOLCF *** 
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* HOLCF: discontinued special version of 'constdefs' (which used to 
14731  184 
support continuous functions) in favor of the general Pure one with 
185 
full typeinference. 

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14885  188 
*** ZF *** 
189 

190 
* ZF/ex/{Group,Ring}: examples in abstract algebra, including the First 

191 
Isomorphism Theorem (on quotienting by the kernel of a homomorphism). 

192 

193 

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New in Isabelle2004 (April 2004) 
196 
 

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*** General *** 
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199 

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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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* Pure: Greek letters (except small lambda, \<lambda>), as well as Gothic 
204 
(\<aa>...\<zz>\<AA>...\<ZZ>), calligraphic (\<A>...\<Z>), and Euler 

14173  205 
(\<a>...\<z>), are now considered normal letters, and can therefore 
206 
be used anywhere where an ASCII letter (a...zA...Z) has until 

207 
now. COMPATIBILITY: This obviously changes the parsing of some 

208 
terms, especially where a symbol has been used as a binder, say 

209 
'\<Pi>x. ...', which is now a type error since \<Pi>x will be parsed 

210 
as an identifier. Fix it by inserting a space around former 

211 
symbols. Call 'isatool fixgreek' to try to fix parsing errors in 

212 
existing theory and ML files. 

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14237  214 
* Pure: Macintosh and Windows linebreaks are now allowed in theory files. 
215 

14731  216 
* Pure: single letter sub/superscripts (\<^isub> and \<^isup>) are now 
217 
allowed in identifiers. Similar to Greek letters \<^isub> is now considered 

218 
a normal (but invisible) letter. For multiple letter subscripts repeat 

219 
\<^isub> like this: x\<^isub>1\<^isub>2. 

14233  220 

14333  221 
* Pure: There are now sub/superscripts that can span more than one 
222 
character. Text between \<^bsub> and \<^esub> is set in subscript in 

14606  223 
ProofGeneral and LaTeX, text between \<^bsup> and \<^esup> in 
224 
superscript. The new control characters are not identifier parts. 

14333  225 

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* Pure: Controlsymbols of the form \<^raw:...> will literally print the 
14606  227 
content of "..." to the latex file instead of \isacntrl... . The "..." 
228 
may consist of any printable characters excluding the end bracket >. 

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14237  230 
* Pure: Using new Isar command "finalconsts" (or the ML functions 
231 
Theory.add_finals or Theory.add_finals_i) it is now possible to 

232 
declare constants "final", which prevents their being given a definition 

233 
later. It is useful for constants whose behaviour is fixed axiomatically 

14224  234 
rather than definitionally, such as the metalogic connectives. 
235 

14606  236 
* Pure: 'instance' now handles general arities with general sorts 
237 
(i.e. intersections of classes), 

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14547  239 
* Presentation: generated HTML now uses a CSS style sheet to make layout 
14731  240 
(somewhat) independent of content. It is copied from lib/html/isabelle.css. 
14547  241 
It can be changed to alter the colors/layout of generated pages. 
242 

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243 

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*** Isar *** 
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245 

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* Tactic emulation methods rule_tac, erule_tac, drule_tac, frule_tac, 
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cut_tac, subgoal_tac and thin_tac: 
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Method rule_tac understands Isar contexts: documentation.
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248 
 Now understand static (Isar) contexts. As a consequence, users of Isar 
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14173
diff
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249 
locales are no longer forced to write Isar proof scripts. 
dbd16ebaf907
Method rule_tac understands Isar contexts: documentation.
ballarin
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14173
diff
changeset

250 
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

251 
emulations. 
dbd16ebaf907
Method rule_tac understands Isar contexts: documentation.
ballarin
parents:
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diff
changeset

252 
 INCOMPATIBILITY: names of variables to be instantiated may no 
14211
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
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14199
diff
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253 
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

254 
This is consistent with the instantiation attribute "where". 
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
parents:
14199
diff
changeset

255 

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

256 
* Attributes "where" and "of": 
14285
92ed032e83a1
Isar: where attribute supports instantiation of type vars.
ballarin
parents:
14283
diff
changeset

257 
 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

258 
the instantiation string. This fixes a bug that caused instantiated 
92ed032e83a1
Isar: where attribute supports instantiation of type vars.
ballarin
parents:
14283
diff
changeset

259 
theorems to have too special types in some circumstances. 
92ed032e83a1
Isar: where attribute supports instantiation of type vars.
ballarin
parents:
14283
diff
changeset

260 
 "where" permits explicit instantiations of type variables. 
14257
a7ef3f7588c5
Type inference bug in Isar attributes "where" and "of" fixed.
ballarin
parents:
14255
diff
changeset

261 

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

262 
* Calculation commands "moreover" and "also" no longer interfere with 
c5078f6c99a9
* Calculation commands "moreover" and "also" no longer interfere with
wenzelm
parents:
14551
diff
changeset

263 
current facts ("this"), admitting arbitrary combinations with "then" 
c5078f6c99a9
* Calculation commands "moreover" and "also" no longer interfere with
wenzelm
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14551
diff
changeset

264 
and derived forms. 
14283  265 

14211
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
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14199
diff
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266 
* Locales: 
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
parents:
14199
diff
changeset

267 
 Goal statements involving the context element "includes" no longer 
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
parents:
14199
diff
changeset

268 
generate theorems with internal delta predicates (those ending on 
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
parents:
14199
diff
changeset

269 
"_axioms") in the premise. 
7286c187596d
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ballarin
parents:
14199
diff
changeset

270 
Resolve particular premise with <locale>.intro to obtain old form. 
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
parents:
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diff
changeset

271 
 Fixed bug in type inference ("unify_frozen") that prevented mix of target 
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
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diff
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272 
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
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273 
 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

274 
[intro?] and [elim?] (respectively) by default. 
14508
859b11514537
Experimental command for instantiation of locales in proof contexts:
ballarin
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14503
diff
changeset

275 
 Experimental command for instantiation of locales in proof contexts: 
14551  276 
instantiate <label>[<attrs>]: <loc> 
14508
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Experimental command for instantiation of locales in proof contexts:
ballarin
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14503
diff
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277 
Instantiates locale <loc> and adds all its theorems to the current context 
14551  278 
taking into account their attributes. Label and attrs are optional 
279 
modifiers, like in theorem declarations. If present, names of 

280 
instantiated theorems are qualified with <label>, and the attributes 

281 
<attrs> are applied after any attributes these theorems might have already. 

282 
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

283 
"<loc> t1 ... tn" is expected from which instantiations of the parameters 
14551  284 
are derived. The command does not support oldstyle locales declared 
285 
with "locale (open)". 

286 
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

287 

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

288 
* HOL: Tactic emulation methods induct_tac and case_tac understand static 
dbd16ebaf907
Method rule_tac understands Isar contexts: documentation.
ballarin
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14173
diff
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289 
(Isar) contexts. 
dbd16ebaf907
Method rule_tac understands Isar contexts: documentation.
ballarin
parents:
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diff
changeset

290 

14556
c5078f6c99a9
* Calculation commands "moreover" and "also" no longer interfere with
wenzelm
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diff
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291 

14136  292 
*** HOL *** 
293 

14624  294 
* Proof import: new image HOL4 contains the imported library from 
295 
the HOL4 system with about 2500 theorems. It is imported by 

296 
replaying proof terms produced by HOL4 in Isabelle. The HOL4 image 

297 
can be used like any other Isabelle image. See 

298 
HOL/Import/HOL/README for more information. 

299 

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

300 
* Simplifier: 
c5c47703f763
Efficient, graphbased reasoner for linear and partial orders.
ballarin
parents:
14389
diff
changeset

301 
 Much improved handling of linear and partial orders. 
c5c47703f763
Efficient, graphbased reasoner for linear and partial orders.
ballarin
parents:
14389
diff
changeset

302 
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

303 
"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

304 
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

305 
to solve goals from the assumptions. 
c5c47703f763
Efficient, graphbased reasoner for linear and partial orders.
ballarin
parents:
14389
diff
changeset

306 
 INCOMPATIBILITY: old proofs break occasionally. Typically, applications 
c5c47703f763
Efficient, graphbased reasoner for linear and partial orders.
ballarin
parents:
14389
diff
changeset

307 
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

308 
is solved by simplification already. 
c5c47703f763
Efficient, graphbased reasoner for linear and partial orders.
ballarin
parents:
14389
diff
changeset

309 

14731  310 
* Numerics: new theory Ring_and_Field contains over 250 basic numerical laws, 
14389  311 
all proved in axiomatic type classes for semirings, rings and fields. 
312 

313 
* Numerics: 

314 
 Numeric types (nat, int, and in HOLComplex rat, real, complex, etc.) are 

14731  315 
now formalized using the Ring_and_Field theory mentioned above. 
14389  316 
 INCOMPATIBILITY: simplification and arithmetic behaves somewhat differently 
317 
than before, because now they are set up once in a generic manner. 

14731  318 
 INCOMPATIBILITY: many typespecific arithmetic laws have gone. 
14480  319 
Look for the general versions in Ring_and_Field (and Power if they concern 
320 
exponentiation). 

14389  321 

14401  322 
* Type "rat" of the rational numbers is now available in HOLComplex. 
14389  323 

14255  324 
* Records: 
325 
 Record types are now by default printed with their type abbreviation 

326 
instead of the list of all field types. This can be configured via 

327 
the reference "print_record_type_abbr". 

14731  328 
 Simproc "record_upd_simproc" for simplification of multiple updates added 
14255  329 
(not enabled by default). 
14427  330 
 Simproc "record_ex_sel_eq_simproc" to simplify EX x. sel r = x resp. 
331 
EX x. x = sel r to True (not enabled by default). 

14255  332 
 Tactic "record_split_simp_tac" to split and simplify records added. 
14731  333 

14136  334 
* 'specification' command added, allowing for definition by 
14224  335 
specification. There is also an 'ax_specification' command that 
336 
introduces the new constants axiomatically. 

14136  337 

14375  338 
* arith(_tac) is now able to generate counterexamples for reals as well. 
339 

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

340 
* HOLAlgebra: new locale "ring" for noncommutative rings. 
dc677b35e54f
New lemmas about inversion of restricted functions.
ballarin
parents:
14398
diff
changeset

341 

14243  342 
* HOLex: InductiveInvariant_examples illustrates advanced recursive function 
14610  343 
definitions, thanks to Sava Krsti\'{c} and John Matthews. 
344 

14731  345 
* HOLMatrix: a first theory for matrices in HOL with an application of 
14610  346 
matrix theory to linear programming. 
14136  347 

14380  348 
* Unions and Intersections: 
349 
The xsymbol output syntax of UN and INT has been changed 

350 
from "\<Union>x \<in> A. B" to "\<Union\<^bsub>x \<in> A\<^esub> B" 

351 
i.e. the index formulae has become a subscript, like in normal math. 

352 
Similarly for "\<Union>x. B", and for \<Inter> instead of \<Union>. 

353 
The subscript version is also accepted as input syntax. 

354 

14418  355 
* Unions and Intersections over Intervals: 
14731  356 
There is new short syntax "UN i<=n. A" for "UN i:{0..n}. A". There is 
357 
also an xsymbol version with subscripts "\<Union>\<^bsub>i <= n\<^esub>. A" 

14418  358 
like in normal math, and corresponding versions for < and for intersection. 
359 

14401  360 
* ML: the legacy theory structures Int and List have been removed. They had 
361 
conflicted with ML Basis Library structures having the same names. 

14380  362 

14464  363 
* 'refute' command added to search for (finite) countermodels. Only works 
364 
for a fragment of HOL. The installation of an external SAT solver is 

365 
highly recommended. See "HOL/Refute.thy" for details. 

366 

14602  367 
* 'quickcheck' command: Allows to find counterexamples by evaluating 
368 
formulae under an assignment of free variables to random values. 

369 
In contrast to 'refute', it can deal with inductive datatypes, 

370 
but cannot handle quantifiers. See "HOL/ex/Quickcheck_Examples.thy" 

371 
for examples. 

14464  372 

14606  373 

14536  374 
*** HOLCF *** 
375 

376 
* Streams now come with concatenation and are part of the HOLCF image 

377 

14572  378 

379 

14136  380 
New in Isabelle2003 (May 2003) 
14606  381 
 
14136  382 

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

383 
*** General *** 
306ef3aef61b
* improved thms_containing: proper indexing of facts instead of raw
wenzelm
parents:
13190
diff
changeset

384 

13618  385 
* Provers/simplifier: 
386 

13781  387 
 Completely reimplemented method simp (ML: Asm_full_simp_tac): 
13618  388 
Assumptions are now subject to complete mutual simplification, 
389 
not just from left to right. The simplifier now preserves 

390 
the order of assumptions. 

391 

392 
Potential INCOMPATIBILITY: 

393 

13781  394 
 simp sometimes diverges where the old version did 
395 
not, e.g. invoking simp on the goal 

13618  396 

397 
[ P (f x); y = x; f x = f y ] ==> Q 

398 

13781  399 
now gives rise to the infinite reduction sequence 
400 

401 
P(f x) (f x = f y)> P(f y) (y = x)> P(f x) (f x = f y)> ... 

402 

403 
Using "simp (asm_lr)" (ML: Asm_lr_simp_tac) instead often solves this 

404 
kind of problem. 

405 

406 
 Tactics combining classical reasoner and simplification (such as auto) 

407 
are also affected by this change, because many of them rely on 

408 
simp. They may sometimes diverge as well or yield a different numbers 

409 
of subgoals. Try to use e.g. force, fastsimp, or safe instead of auto 

410 
in case of problems. Sometimes subsequent calls to the classical 

411 
reasoner will fail because a preceeding call to the simplifier too 

412 
eagerly simplified the goal, e.g. deleted redundant premises. 

13618  413 

414 
 The simplifier trace now shows the names of the applied rewrite rules 

415 

13829  416 
 You can limit the number of recursive invocations of the simplifier 
417 
during conditional rewriting (where the simplifie tries to solve the 

418 
conditions before applying the rewrite rule): 

419 
ML "simp_depth_limit := n" 

420 
where n is an integer. Thus you can force termination where previously 

421 
the simplifier would diverge. 

422 

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

423 
 Accepts free variables as head terms in congruence rules. Useful in Isar. 
13829  424 

13938  425 
 No longer aborts on failed congruence proof. Instead, the 
426 
congruence is ignored. 

427 

14008  428 
* Pure: New generic framework for extracting programs from constructive 
429 
proofs. See HOL/Extraction.thy for an example instantiation, as well 

430 
as HOL/Extraction for some case studies. 

431 

13868  432 
* Pure: The main goal of the proof state is no longer shown by default, only 
433 
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

434 
PG menu: Isabelle/Isar > Settings > Show Main Goal 
13815  435 
(ML: Proof.show_main_goal). 
436 

437 
* Pure: You can find all matching introduction rules for subgoal 1, i.e. all 

438 
rules whose conclusion matches subgoal 1: 

439 
PG menu: Isabelle/Isar > Show me > matching rules 

440 
The rules are ordered by how closely they match the subgoal. 

441 
In particular, rules that solve a subgoal outright are displayed first 

442 
(or rather last, the way they are printed). 

443 
(ML: ProofGeneral.print_intros()) 

444 

445 
* Pure: New flag trace_unify_fail causes unification to print 

13781  446 
diagnostic information (PG: in trace buffer) when it fails. This is 
447 
useful for figuring out why single step proofs like rule, erule or 

448 
assumption failed. 

449 

13815  450 
* Pure: Locale specifications now produce predicate definitions 
13410
f2cd09766864
* Pure: locale specifications now produce predicate definitions;
wenzelm
parents:
13344
diff
changeset

451 
according to the body of text (covering assumptions modulo local 
f2cd09766864
* Pure: locale specifications now produce predicate definitions;
wenzelm
parents:
13344
diff
changeset

452 
definitions); predicate "loc_axioms" covers newly introduced text, 
f2cd09766864
* Pure: locale specifications now produce predicate definitions;
wenzelm
parents:
13344
diff
changeset

453 
while "loc" is cumulative wrt. all included locale expressions; the 
f2cd09766864
* Pure: locale specifications now produce predicate definitions;
wenzelm
parents:
13344
diff
changeset

454 
latter view is presented only on export into the global theory 
f2cd09766864
* Pure: locale specifications now produce predicate definitions;
wenzelm
parents:
13344
diff
changeset

455 
context; potential INCOMPATIBILITY, use "(open)" option to fall back 
f2cd09766864
* Pure: locale specifications now produce predicate definitions;
wenzelm
parents:
13344
diff
changeset

456 
on the old view without predicates; 
f2cd09766864
* Pure: locale specifications now produce predicate definitions;
wenzelm
parents:
13344
diff
changeset

457 

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

458 
* 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

459 
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

460 
``var x + var y + struct M'' as import; 
83f41b047a39
* Pure: predefined locales "var" and "struct" are useful for sharing
wenzelm
parents:
13443
diff
changeset

461 

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

462 
* 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

463 
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

464 
include local facts of proof configuration (also covers active 
13541  465 
locales), cover fixed variables in index; may use "_" in term 
466 
specification; an optional limit for the number of printed facts may 

467 
be given (the default is 40); 

468 

469 
* Pure: disallow duplicate fact bindings within newstyle theory files 

470 
(batchmode only); 

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

471 

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

472 
* Provers: improved induct method: assumptions introduced by case 
07747943c626
* Provers: Simplifier.simproc(_i) now provide sane interface for
wenzelm
parents:
13459
diff
changeset

473 
"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

474 
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

475 

13550  476 
* Provers: the function blast.overloaded has been removed: all constants 
477 
are regarded as potentially overloaded, which improves robustness in exchange 

478 
for slight decrease in efficiency; 

479 

13781  480 
* Provers/linorder: New generic prover for transitivity reasoning over 
481 
linear orders. Note: this prover is not efficient! 

482 

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

483 
* 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

484 
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

485 

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

486 

13158  487 
*** HOL *** 
488 

13899  489 
* arith(_tac) 
490 

491 
 Produces a counter example if it cannot prove a goal. 

492 
Note that the counter example may be spurious if the goal is not a formula 

493 
of quantifierfree linear arithmetic. 

494 
In ProofGeneral the counter example appears in the trace buffer. 

495 

496 
 Knows about div k and mod k where k is a numeral of type nat or int. 

497 

498 
 Calls full Presburger arithmetic (by Amine Chaieb) if quantifierfree 

499 
linear arithmetic fails. This takes account of quantifiers and divisibility. 

14731  500 
Presburger arithmetic can also be called explicitly via presburger(_tac). 
13899  501 

502 
* simp's arithmetic capabilities have been enhanced a bit: it now 

503 
takes ~= in premises into account (by performing a case split); 

504 

505 
* simp reduces "m*(n div m) + n mod m" to n, even if the two summands 

506 
are distributed over a sum of terms; 

507 

13735  508 
* New tactic "trans_tac" and method "trans" instantiate 
509 
Provers/linorder.ML for axclasses "order" and "linorder" (predicates 

14731  510 
"<=", "<" and "="). 
511 

512 
* function INCOMPATIBILITIES: Pisets have been redefined and moved from main 

13587  513 
HOL to Library/FuncSet; constant "Fun.op o" is now called "Fun.comp"; 
514 

13443  515 
* 'typedef' command has new option "open" to suppress the set 
516 
definition; 

517 

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

518 
* 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

519 
Finite_Set); 
13492  520 

13443  521 
* attribute [symmetric] now works for relations as well; it turns 
522 
(x,y) : R^1 into (y,x) : R, and vice versa; 

523 

13613  524 
* induct over a !!quantified statement (say !!x1..xn): 
525 
each "case" automatically performs "fix x1 .. xn" with exactly those names. 

526 

13899  527 
* Map: `empty' is no longer a constant but a syntactic abbreviation for 
528 
%x. None. Warning: empty_def now refers to the previously hidden definition 

529 
of the empty set. 

530 

14018  531 
* Algebra: formalization of classical algebra. Intended as base for 
532 
any algebraic development in Isabelle. Currently covers group theory 

533 
(up to Sylow's theorem) and ring theory (Universal Property of 

534 
Univariate Polynomials). Contributions welcome; 

13960  535 

536 
* GroupTheory: deleted, since its material has been moved to Algebra; 

537 

14731  538 
* Complex: new directory of the complex numbers with numeric constants, 
539 
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

540 
nonstandard (Jacques Fleuriot); 
2160abf7cfe7
removal of the image HOLReal and merging of HOLRealex with HOLComplexex
paulson
parents:
13960
diff
changeset

541 

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

542 
* 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

543 

14731  544 
* 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

545 
Fleuriot); 
13960  546 

13549  547 
* Real/HahnBanach: updated and adapted to locales; 
548 

13995  549 
* NumberTheory: added Gauss's law of quadratic reciprocity (by Avigad, 
550 
Gray and Kramer); 

13872  551 

552 
* UNITY: added the MeierSanders theory of progress sets; 

553 

14011  554 
* MicroJava: bytecode verifier and lightweight bytecode verifier 
555 
as abstract algorithms, instantiated to the JVM; 

556 

14010  557 
* Bali: Java source language formalization. Type system, operational 
558 
semantics, axiomatic semantics. Supported language features: 

559 
classes, interfaces, objects,virtual methods, static methods, 

560 
static/instance fields, arrays, access modifiers, definite 

561 
assignment, exceptions. 

13549  562 

14011  563 

13549  564 
*** ZF *** 
565 

566 
* ZF/Constructible: consistency proof for AC (Gödel's constructible 

567 
universe, etc.); 

568 

13872  569 
* Main ZF: virtually all theories converted to newstyle format; 
13518  570 

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

571 

13478  572 
*** ML *** 
573 

574 
* Pure: Tactic.prove provides sane interface for internal proofs; 

575 
omits the infamous "standard" operation, so this is more appropriate 

576 
than prove_goalw_cterm in many situations (e.g. in simprocs); 

577 

578 
* Pure: improved error reporting of simprocs; 

579 

580 
* Provers: Simplifier.simproc(_i) provides sane interface for setting 

581 
up simprocs; 

582 

583 

13953  584 
*** Document preparation *** 
585 

586 
* uses \par instead of \\ for line breaks in theory text. This may 

587 
shift some page breaks in large documents. To get the old behaviour 

588 
use \renewcommand{\isanewline}{\mbox{}\\\mbox{}} in root.tex. 

589 

14731  590 
* minimized dependencies of isabelle.sty and isabellesym.sty on 
13953  591 
other packages 
592 

593 
* \<euro> now needs package babel/greek instead of marvosym (which 

594 
broke \Rightarrow) 

595 

14731  596 
* normal size for \<zero>...\<nine> (uses \mathbf instead of 
13954  597 
textcomp package) 
13953  598 

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

599 

14572  600 

12984  601 
New in Isabelle2002 (March 2002) 
602 
 

11474  603 

11572  604 
*** Document preparation *** 
605 

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

606 
* greatly simplified document preparation setup, including more 
b903d3dabbe2
* greatly simplified document preparation setup, including more
wenzelm
parents:
11817
diff
changeset

607 
graceful interpretation of isatool usedir i/d/D options, and more 
b903d3dabbe2
* greatly simplified document preparation setup, including more
wenzelm
parents:
11817
diff
changeset

608 
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

609 
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

610 
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

611 
"isatool usedir D output HOL Test && isatool document Test/output"; 
11842
b903d3dabbe2
* greatly simplified document preparation setup, including more
wenzelm
parents:
11817
diff
changeset

612 

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

613 
* theory dependency graph may now be incorporated into documents; 
b903d3dabbe2
* greatly simplified document preparation setup, including more
wenzelm
parents:
11817
diff
changeset

614 
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

615 
with \includegraphics of LaTeX; 
b903d3dabbe2
* greatly simplified document preparation setup, including more
wenzelm
parents:
11817
diff
changeset

616 

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

617 
* proper spacing of consecutive markup elements, especially text 
371ce685b0ec
* proper spacing of consecutive markup elements, especially text
wenzelm
parents:
11842
diff
changeset

618 
blocks after section headings; 
371ce685b0ec
* proper spacing of consecutive markup elements, especially text
wenzelm
parents:
11842
diff
changeset

619 

11572  620 
* support bold style (for single symbols only), input syntax is like 
621 
this: "\<^bold>\<alpha>" or "\<^bold>A"; 

622 

11814  623 
* \<bullet> is now output as bold \cdot by default, which looks much 
11572  624 
better in printed text; 
625 

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

626 
* added default LaTeX bindings for \<tturnstile> and \<TTurnstile>; 
deb8cac87063
* added default LaTeX bindings for \<tturnstile> and \<TTurnstile>;
wenzelm
parents:
11702
diff
changeset

627 
note that these symbols are currently unavailable in Proof General / 
12769  628 
XSymbol; new symbols \<zero>, \<one>, ..., \<nine>, and \<euro>; 
12690  629 

630 
* isatool latex no longer depends on changed TEXINPUTS, instead 

631 
isatool document copies the Isabelle style files to the target 

632 
location; 

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

633 

11572  634 

11633  635 
*** Isar *** 
636 

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

637 
* Pure/Provers: improved proof by cases and induction; 
12280  638 
 'case' command admits impromptu naming of parameters (such as 
639 
"case (Suc n)"); 

640 
 'induct' method divinates rule instantiation from the inductive 

641 
claim; no longer requires excessive ?P bindings for proper 

642 
instantiation of cases; 

643 
 'induct' method properly enumerates all possibilities of set/type 

644 
rules; as a consequence facts may be also passed through *type* 

645 
rules without further ado; 

646 
 'induct' method now derives symbolic cases from the *rulified* 

647 
rule (before it used to rulify cases stemming from the internal 

648 
atomized version); this means that the context of a nonatomic 

649 
statement becomes is included in the hypothesis, avoiding the 

650 
slightly cumbersome show "PROP ?case" form; 

651 
 'induct' may now use elimstyle induction rules without chaining 

652 
facts, using ``missing'' premises from the goal state; this allows 

653 
rules stemming from inductive sets to be applied in unstructured 

654 
scripts, while still benefitting from proper handling of nonatomic 

655 
statements; NB: major inductive premises need to be put first, all 

656 
the rest of the goal is passed through the induction; 

657 
 'induct' proper support for mutual induction involving nonatomic 

658 
rule statements (uses the new concept of simultaneous goals, see 

659 
below); 

12853  660 
 append all possible rule selections, but only use the first 
661 
success (no backtracking); 

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

662 
 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

663 
 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

664 
 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

665 
General versions); 
11995
4a622f5fb164
 'induct' may now use elimstyle induction rules without chaining
wenzelm
parents:
11986
diff
changeset

666 
 moved induct/cases attributes to Pure, methods to Provers; 
4a622f5fb164
 'induct' may now use elimstyle induction rules without chaining
wenzelm
parents:
11986
diff
changeset

667 
 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

668 

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

669 
* Pure: support multiple simultaneous goal statements, for example 
04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

670 
"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

671 
metalevel mechanism, this acts as if several individual goals had 
04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

672 
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

673 
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

674 
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

675 
fails: 
04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

676 

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

677 
assume "A & B" then have A and B .. (*".." fails*) 
04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

678 

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

679 
better use "obtain" in situations as above; alternative refer to 
04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

680 
multistep methods like 'auto', 'simp_all', 'blast+' etc.; 
04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

681 

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

682 
* Pure: proper integration with ``locales''; unlike the original 
12210
2f510d8d8291
* ZF: newstyle theory commands '(co)inductive', '(co)datatype',
wenzelm
parents:
12177
diff
changeset

683 
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

684 
contexts rather than raw logical ones (e.g. we admit to include 
12280  685 
attributes everywhere); operations on locales include merge and 
12964  686 
rename; support for implicit arguments (``structures''); simultaneous 
687 
typeinference over imports and text; see also HOL/ex/Locales.thy for 

688 
some examples; 

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

689 

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

690 
* Pure: the following commands have been ``localized'', supporting a 
4013be8572c5
* Pure: localized 'lemmas', 'theorems', 'declare';
wenzelm
parents:
12690
diff
changeset

691 
target locale specification "(in name)": 'lemma', 'theorem', 
4013be8572c5
* Pure: localized 'lemmas', 'theorems', 'declare';
wenzelm
parents:
12690
diff
changeset

692 
'corollary', 'lemmas', 'theorems', 'declare'; the results will be 
4013be8572c5
* Pure: localized 'lemmas', 'theorems', 'declare';
wenzelm
parents:
12690
diff
changeset

693 
stored both within the locale and at the theory level (exported and 
4013be8572c5
* Pure: localized 'lemmas', 'theorems', 'declare';
wenzelm
parents:
12690
diff
changeset

694 
qualified by the locale name); 
4013be8572c5
* Pure: localized 'lemmas', 'theorems', 'declare';
wenzelm
parents:
12690
diff
changeset

695 

12964  696 
* Pure: theory goals may now be specified in ``long'' form, with 
697 
adhoc contexts consisting of arbitrary locale elements. for example 

698 
``lemma foo: fixes x assumes "A x" shows "B x"'' (local syntax and 

699 
definitions may be given, too); the result is a metalevel rule with 

700 
the context elements being discharged in the obvious way; 

701 

702 
* Pure: new proof command 'using' allows to augment currently used 

703 
facts after a goal statement ('using' is syntactically analogous to 

704 
'apply', but acts on the goal's facts only); this allows chained facts 

705 
to be separated into parts given before and after a claim, as in 

706 
``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

707 

11722  708 
* Pure: renamed "antecedent" case to "rule_context"; 
709 

12964  710 
* Pure: new 'judgment' command records explicit information about the 
711 
objectlogic embedding (used by several tools internally); no longer 

712 
use hardwired "Trueprop"; 

713 

11738  714 
* Pure: added 'corollary' command; 
715 

11722  716 
* Pure: fixed 'token_translation' command; 
717 

11899  718 
* Pure: removed obsolete 'exported' attribute; 
719 

11933  720 
* Pure: dummy pattern "_" in is/let is now automatically lifted over 
721 
bound variables: "ALL x. P x > Q x" (is "ALL x. _ > ?C x") 

11899  722 
supersedes more cumbersome ... (is "ALL x. _ x > ?C x"); 
723 

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

724 
* Pure: method 'atomize' presents local goal premises as objectlevel 
b10f1e8862f4
* Pure: method 'atomize' presents local goal premises as objectlevel
wenzelm
parents:
11937
diff
changeset

725 
statements (atomic metalevel propositions); setup controlled via 
b10f1e8862f4
* Pure: method 'atomize' presents local goal premises as objectlevel
wenzelm
parents:
11937
diff
changeset

726 
rewrite rules declarations of 'atomize' attribute; example 
b10f1e8862f4
* Pure: method 'atomize' presents local goal premises as objectlevel
wenzelm
parents:
11937
diff
changeset

727 
application: 'induct' method with proper rule statements in improper 
b10f1e8862f4
* Pure: method 'atomize' presents local goal premises as objectlevel
wenzelm
parents:
11937
diff
changeset

728 
proof *scripts*; 
b10f1e8862f4
* Pure: method 'atomize' presents local goal premises as objectlevel
wenzelm
parents:
11937
diff
changeset

729 

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

730 
* 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

731 
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

732 
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

733 
especially important for locales); 
4a8558dbb6a0
* Isar/Pure: emulation of instantiation tactics (rule_tac, cut_tac,
wenzelm
parents:
12078
diff
changeset

734 

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

735 
* 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

736 
mode; 
f0f06950820d
* Isar/Pure: "sorry" no longer requires quick_and_dirty in interactive mode;
wenzelm
parents:
12280
diff
changeset

737 

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

738 
* Pure/obtain: the formal conclusion "thesis", being marked as 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

739 
``internal'', may no longer be reference directly in the text; 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

740 
potential INCOMPATIBILITY, may need to use "?thesis" in rare 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

741 
situations; 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

742 

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

743 
* Pure: generic 'sym' attribute which declares a rule both as pure 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

744 
'elim?' and for the 'symmetric' operation; 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

745 

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

746 
* 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

747 
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

748 
discontinued; 
b9635eb8a448
* Isar/Pure: marginal comments ``'' may now occur just anywhere in the text;
wenzelm
parents:
12853
diff
changeset

749 

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

750 
* Pure: new method 'rules' is particularly wellsuited for proof 
f869b6822006
Added two paragraphs on "rules" method and code generator.
berghofe
parents:
12984
diff
changeset

751 
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

752 
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

753 

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

754 
* Pure/Provers/classical: simplified integration with pure rule 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

755 
attributes and methods; the classical "intro?/elim?/dest?" 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

756 
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

757 
includes classically swapped intros; "intro" and "elim" methods no 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

758 
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

759 
AddXIs/AddXEs/AddXDs; all of this has some potential for 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

760 
INCOMPATIBILITY; 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

761 

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

762 
* Provers/classical: attribute 'swapped' produces classical inversions 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

763 
of introduction rules; 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

764 

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

765 
* Provers/simplifier: 'simplified' attribute may refer to explicit 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

766 
rules instead of full simplifier context; 'iff' attribute handles 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

767 
conditional rules; 
11936
fef099613354
* Provers: 'simplified' attribute may refer to explicit rules instead
wenzelm
parents:
11933
diff
changeset

768 

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

769 
* 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

770 

11690  771 
* HOL: 'recdef' now fails on unfinished automated proofs, use 
11633  772 
"(permissive)" option to recover old behavior; 
773 

11933  774 
* HOL: 'inductive' no longer features separate (collective) attributes 
775 
for 'intros' (was found too confusing); 

776 

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

777 
* HOL: properly declared induction rules less_induct and 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

778 
wf_induct_rule; 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

779 

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

780 

11474  781 
*** HOL *** 
782 

11702  783 
* HOL: moved over to sane numeral syntax; the new policy is as 
784 
follows: 

785 

786 
 0 and 1 are polymorphic constants, which are defined on any 

787 
numeric type (nat, int, real etc.); 

788 

789 
 2, 3, 4, ... and 1, 2, 3, ... are polymorphic numerals, based 

790 
binary representation internally; 

791 

792 
 type nat has special constructor Suc, and generally prefers Suc 0 

793 
over 1::nat and Suc (Suc 0) over 2::nat; 

794 

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

795 
This change may cause significant problems of INCOMPATIBILITY; here 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

796 
are some hints on converting existing sources: 
11702  797 

798 
 due to the new "num" token, "0" and "1" etc. are now atomic 

799 
entities, so expressions involving "" (unary or binary minus) need 

800 
to be spaced properly; 

801 

802 
 existing occurrences of "1" may need to be constraint "1::nat" or 

803 
even replaced by Suc 0; similar for old "2"; 

804 

805 
 replace "#nnn" by "nnn", and "#nnn" by "nnn"; 

806 

807 
 remove all special provisions on numerals in proofs; 

808 

13042  809 
* HOL: simp rules nat_number expand numerals on nat to Suc/0 
12837  810 
representation (depends on bin_arith_simps in the default context); 
811 

12736  812 
* HOL: symbolic syntax for x^2 (numeral 2); 
813 

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

814 
* 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

815 
"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

816 
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

817 
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

818 
"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

819 

12280  820 
* HOL/record package improvements: 
821 
 new derived operations "fields" to build a partial record section, 

822 
"extend" to promote a fixed record to a record scheme, and 

823 
"truncate" for the reverse; cf. theorems "xxx.defs", which are *not* 

824 
declared as simp by default; 

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

825 
 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

826 
qualified)  potential INCOMPATIBILITY; 
12280  827 
 removed "make_scheme" operations (use "make" with "extend")  
828 
INCOMPATIBILITY; 

11937  829 
 removed "more" class (simply use "term")  INCOMPATIBILITY; 
12253  830 
 provides cases/induct rules for use with corresponding Isar 
831 
methods (for concrete records, record schemes, concrete more 

12280  832 
parts, and schematic more parts  in that order); 
11930  833 
 internal definitions directly based on a lightweight abstract 
834 
theory of product types over typedef rather than datatype; 

835 

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

836 
* 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

837 
specifications; specific support for HOL constructs such as inductive 
f869b6822006
Added two paragraphs on "rules" method and code generator.
berghofe
parents:
12984
diff
changeset

838 
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

839 
via 'generate_code' theory section; 
f869b6822006
Added two paragraphs on "rules" method and code generator.
berghofe
parents:
12984
diff
changeset

840 

11933  841 
* HOL: canonical cases/induct rules for ntuples (n = 3..7); 
842 

13824  843 
* HOL: consolidated and renamed several theories. In particular: 
14731  844 
Ord.thy has been absorbed into HOL.thy 
845 
String.thy has been absorbed into List.thy 

846 

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

847 
* 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

848 
(beware of argument permutation!); 
1d5f5d2427d2
* HOL: concrete setsum syntax "\<Sum>i:A. b" == "setsum (%i. b) A"
wenzelm
parents:
11797
diff
changeset

849 

11657  850 
* HOL: linorder_less_split superseded by linorder_cases; 
851 

12917  852 
* HOL/List: "nodups" renamed to "distinct"; 
12889  853 

11633  854 
* HOL: added "The" definite description operator; move Hilbert's "Eps" 
13824  855 
to peripheral theory "Hilbert_Choice"; some INCOMPATIBILITIES: 
856 
 Ex_def has changed, now need to use some_eq_ex 

11437  857 

11572  858 
* HOL: made split_all_tac safe; EXISTING PROOFS MAY FAIL OR LOOP, so 
859 
in this (rare) case use: 

860 

861 
delSWrapper "split_all_tac" 

862 
addSbefore ("unsafe_split_all_tac", unsafe_split_all_tac) 

863 

864 
* HOL: added safe wrapper "split_conv_tac" to claset; EXISTING PROOFS 

11474  865 
MAY FAIL; 
11361  866 

11572  867 
* HOL: introduced f^n = f o ... o f; warning: due to the limits of 
868 
Isabelle's type classes, ^ on functions and relations has too general 

869 
a domain, namely ('a * 'b) set and 'a => 'b; this means that it may be 

870 
necessary to attach explicit type constraints; 

11307  871 

12917  872 
* HOL/Relation: the prefix name of the infix "O" has been changed from 
873 
"comp" to "rel_comp"; INCOMPATIBILITY: a few theorems have been 

874 
renamed accordingly (eg "compI" > "rel_compI"). 

12489  875 

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

876 
* 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

877 
expressions; 
11474  878 

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

879 
* HOL: bounded abstraction now uses syntax "%" / "\<lambda>" instead 
cbfc53e45476
* HOL: bounded abstraction now uses syntax "%" / "\<lambda>" instead
wenzelm
parents:
12405
diff
changeset

880 
of "lam"  INCOMPATIBILITY; 
11474  881 

11933  882 
* HOL: got rid of some global declarations (potential INCOMPATIBILITY 
883 
for ML tools): const "()" renamed "Product_Type.Unity", type "unit" 

884 
renamed "Product_Type.unit"; 

11611  885 

12564  886 
* HOL: renamed rtrancl_into_rtrancl2 to converse_rtrancl_into_rtrancl 
887 

12924  888 
* HOL: removed obsolete theorem "optionE" (use "option.exhaust", or 
889 
the "cases" method); 

890 

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

891 
* 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

892 
Florian Kammüller); 
14822e4436bf
HOL/IMP and HOLCF/IMP updated and converted (Gerwin Klein);
wenzelm
parents:
12587
diff
changeset

893 

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

894 
* 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

895 
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

896 
some explanations (by Gerwin Klein); 
12597
14822e4436bf
HOL/IMP and HOLCF/IMP updated and converted (Gerwin Klein);
wenzelm
parents:
12587
diff
changeset

897 

12734  898 
* HOLReal: added Complex_Numbers (by Gertrud Bauer); 
899 

12690  900 
* HOLHyperreal is now a logic image; 
901 

11611  902 

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

903 
*** HOLCF *** 
9c3377b133c0
HOLCF: proper rep_datatype lift (see theory Lift); use plain induct_tac
wenzelm
parents:
11995
diff
changeset

904 

12622  905 
* Isar: consts/constdefs supports mixfix syntax for continuous 
906 
operations; 

907 

908 
* Isar: domain package adapted to newstyle theory format, e.g. see 

909 
HOLCF/ex/Dnat.thy; 

910 

911 
* theory Lift: proper use of rep_datatype lift instead of ML hacks  

12280  912 
potential INCOMPATIBILITY; now use plain induct_tac instead of former 
913 
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

914 

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

915 
* HOLCF/IMP: updated and converted to newstyle theory; 
14822e4436bf
HOL/IMP and HOLCF/IMP updated and converted (Gerwin Klein);
wenzelm
parents:
12587
diff
changeset

916 

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

917 

11474  918 
*** ZF *** 
919 

12622  920 
* Isar: proper integration of logicspecific tools and packages, 
921 
including theory commands '(co)inductive', '(co)datatype', 

922 
'rep_datatype', 'inductive_cases', as well as methods 'ind_cases', 

923 
'induct_tac', 'case_tac', and 'typecheck' (with attribute 'TC'); 

924 

925 
* theory Main no longer includes AC; for the Axiom of Choice, base 

926 
your theory on Main_ZFC; 

927 

928 
* the integer library now covers quotients and remainders, with many 

929 
laws relating division to addition, multiplication, etc.; 

12563  930 

12280  931 
* ZF/UNITY: Chandy and Misra's UNITY is now available in ZF, giving a 
932 
typeless version of the formalism; 

933 

13025  934 
* ZF/AC, Coind, IMP, Resid: updated and converted to newstyle theory 
935 
format; 

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

936 

12280  937 
* 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

938 
including theory Multiset for multiset orderings; converted to 
2df381faa787
* ZF/IMP: updated and converted to newstyle theory format;
wenzelm
parents:
12597
diff
changeset

939 
newstyle theory format; 
12177
b1c16d685a99
* ZF: newstyle theory commands 'inductive', 'inductive_cases', and
wenzelm
parents:
12163
diff
changeset

940 

13025  941 
* ZF: many new theorems about lists, ordinals, etc.; 
12850  942 

11474  943 

944 
*** General *** 

945 

12280  946 
* Pure/kernel: metalevel proof terms (by Stefan Berghofer); reference 
947 
variable proof controls level of detail: 0 = no proofs (only oracle 

948 
dependencies), 1 = lemma dependencies, 2 = compact proof terms; see 

949 
also ref manual for further ML interfaces; 

950 

951 
* Pure/axclass: removed obsolete ML interface 

952 
goal_subclass/goal_arity; 

953 

954 
* Pure/syntax: new token syntax "num" for plain numerals (without "#" 

955 
of "xnum"); potential INCOMPATIBILITY, since 0, 1 etc. are now 

956 
separate tokens, so expressions involving minus need to be spaced 

957 
properly; 

958 

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

959 
* 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

960 
rather than "infixl" or "infixr"; 
f0f06950820d
* Isar/Pure: "sorry" no longer requires quick_and_dirty in interactive mode;
wenzelm
parents:
12280
diff
changeset

961 

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

962 
* 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

963 
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

964 
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

965 
type variable); 
12280  966 

967 
* Pure/syntax: print modes "type_brackets" and "no_type_brackets" 

968 
control output of nested => (types); the default behavior is 

969 
"type_brackets"; 

970 

971 
* Pure/syntax: builtin parse translation for "_constify" turns valued 

11817  972 
tokens into AST constants; 
11474  973 

12280  974 
* Pure/syntax: prefer later declarations of translations and print 
975 
translation functions; potential INCOMPATIBILITY: need to reverse 

976 
multiple declarations for same syntax element constant; 

977 

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

978 
* 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

979 
practice); 
c31b44286a8a
* Pure/show_hyps reset by default (in accordance to existing Isar practice);
wenzelm
parents:
12777
diff
changeset

980 

12280  981 
* Provers/classical: renamed addaltern to addafter, addSaltern to 
982 
addSafter; 

983 

984 
* Provers/clasimp: ``iff'' declarations now handle conditional rules 

985 
as well; 

12253  986 

12538  987 
* system: tested support for MacOS X; should be able to get Isabelle + 
988 
Proof General to work in a plain Terminal after installing Poly/ML 

989 
(e.g. from the Isabelle distribution area) and GNU bash alone 

990 
(e.g. from http://www.apple.com); full X11, XEmacs and XSymbol 

991 
support requires further installations, e.g. from 

992 
http://fink.sourceforge.net/); 

993 

12280  994 
* system: support Poly/ML 4.1.1 (able to manage larger heaps); 
11551  995 

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

996 
* 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

997 
of 40 MB), cf. ML_OPTIONS; 
3a62df7ae926
* system: reduced base memory usage by Poly/ML (approx. 20 MB instead
wenzelm
parents:
12736
diff
changeset

998 

11633  999 
* system: Proof General keywords specification is now part of the 
1000 
Isabelle distribution (see etc/isarkeywords.el); 

1001 

12728  1002 
* system: support for persistent Proof General sessions (refrain from 
1003 
outdating all loaded theories on startup); user may create writable 

1004 
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

1005 

11551  1006 
* system: smart selection of Isabelle process versus Isabelle 
11572  1007 
interface, accommodates caseinsensitive file systems (e.g. HFS+); may 
1008 
run both "isabelle" and "Isabelle" even if file names are badly 

1009 
damaged (executable inspects the case of the first letter of its own 

1010 
name); added separate "isabelleprocess" and "isabelleinterface"; 

11551  1011 

12472  1012 
* system: refrain from any attempt at filtering input streams; no 
1013 
longer support ``8bit'' encoding of old isabelle font, instead proper 

1014 
isolatin characters may now be used; the related isatools 

1015 
"symbolinput" and "nonascii" have disappeared as well; 

1016 

1017 
* system: removed old "xterm" interface (the print modes "xterm" and 

1018 
"xterm_color" are still available for direct use in a suitable 

1019 
terminal); 

1020 

11314  1021 

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

1022 

11062  1023 
New in Isabelle992 (February 2001) 
1024 
 

1025 

10224  1026 
*** Overview of INCOMPATIBILITIES *** 
1027 

11241  1028 
* HOL: please note that theories in the Library and elsewhere often use the 
1029 
newstyle (Isar) format; to refer to their theorems in an ML script you must 

12622  1030 
bind them to ML identifers by e.g. val thm_name = thm "thm_name"; 
11241  1031 

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

1032 
* HOL: inductive package no longer splits induction rule aggressively, 
2e3bbac8763b
HOL: inductive package no longer splits induction rule aggressively,
wenzelm
parents:
11016
diff
changeset

1033 
but only as far as specified by the introductions given; the old 
11130  1034 
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

1035 
'split_rule (complete)'; 
2e3bbac8763b
HOL: inductive package no longer splits induction rule aggressively,
wenzelm
parents:
11016
diff
changeset

1036 

10998  1037 
* HOL: induct renamed to lfp_induct, lfp_Tarski to lfp_unfold, 
1038 
gfp_Tarski to gfp_unfold; 

10224  1039 

10288  1040 
* HOL: contrapos, contrapos2 renamed to contrapos_nn, contrapos_pp; 
1041 

10858  1042 
* HOL: infix "dvd" now has priority 50 rather than 70 (because it is a 
1043 
relation); infix "^^" has been renamed "``"; infix "``" has been 

1044 
renamed "`"; "univalent" has been renamed "single_valued"; 

10793  1045 

10998  1046 
* HOL/Real: "rinv" and "hrinv" replaced by overloaded "inverse" 
1047 
operation; 

1048 

10868  1049 
* HOLCF: infix "`" has been renamed "$"; the symbol syntax is \<cdot>; 
10856  1050 

10391  1051 
* Isar: 'obtain' no longer declares "that" fact as simp/intro; 
1052 

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

1053 
* 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

1054 
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

1055 
(which is now passed through the inductive cases); 
58bb50f69497
* Isar/HOL: method 'induct' now handles nonatomic goals; as a
wenzelm
parents:
10391
diff
changeset

1056 

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

1057 
* Document preparation: renamed standard symbols \<ll> to \<lless> and 
0e7cf6f9fa29
* Document preparation: renamed standard symbols \<ll> to \<lless> and
wenzelm
parents:
10966
diff
changeset

1058 
\<gg> to \<ggreater>; 
0e7cf6f9fa29
* Document preparation: renamed standard symbols \<ll> to \<lless> and
wenzelm
parents:
10966
diff
changeset

1059 

10224  1060 

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

1061 
*** Document preparation *** 
87771e2f49fe
* HOL/Library: a collection of generic theories to be used together
wenzelm
parents:
10224
diff
changeset

1062 

10858  1063 
* \isabellestyle{NAME} selects version of Isabelle output (currently 
1064 
available: are "it" for near mathmode beststyle output, "sl" for 

1065 
slanted text style, and "tt" for plain typewriter; if no 

1066 
\isabellestyle command is given, output is according to slanted 

1067 
typewriter); 

1068 

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

1069 
* 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

1070 
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

1071 

10858  1072 
* some more standard symbols; see Appendix A of the system manual for 
11062  1073 
the complete list of symbols defined in isabellesym.sty; 
10858  1074 

10998  1075 
* improved isabelle style files; more abstract symbol implementation 
1076 
(should now use \isamath{...} and \isatext{...} in custom symbol 

1077 
definitions); 

1078 

10634  1079 
* antiquotation @{goals} and @{subgoals} for output of *dynamic* goals 
1080 
state; Note that presentation of goal states does not conform to 

1081 
actual humanreadable proof documents. Please do not include goal 

1082 
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

1083 

11062  1084 
* proper indentation of antiquoted output with proportional LaTeX 
1085 
fonts; 

10862  1086 

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

1087 
* no_document ML operator temporarily disables LaTeX document 
ac5709ac50b9
* no_document ML operator temporarily disables LaTeX document
wenzelm
parents:
11043
diff
changeset

1088 
generation; 
ac5709ac50b9
* no_document ML operator temporarily disables LaTeX document
wenzelm
parents:
11043
diff
changeset

1089 

11062  1090 
* isatool unsymbolize tunes sources for plain ASCII communication; 
1091 

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

1092 

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

1093 
*** Isar *** 
b0ab988a27a9
* HOL: default proof step now includes 'intro_classes';
wenzelm
parents:
10288
diff
changeset

1094 

10547  1095 
* Pure: Isar now suffers initial goal statements to contain unbound 
1096 
schematic variables (this does not conform to actual readable proof 

1097 
documents, due to unpredictable outcome and noncompositional proof 

1098 
checking); users who know what they are doing may use schematic goals 

1099 
for Prologstyle synthesis of proven results; 

1100 

10391  1101 
* Pure: assumption method (an implicit finishing) now handles actual 
1102 
rules as well; 

1103 

1104 
* Pure: improved 'obtain'  moved to Pure, insert "that" into 

1105 
initial goal, declare "that" only as Pure intro (only for single 

1106 
steps); the "that" rule assumption may now be involved in implicit 

1107 
finishing, thus ".." becomes a feasible for trivial obtains; 

1108 

1109 
* Pure: default proof step now includes 'intro_classes'; thus trivial 

1110 
instance proofs may be performed by ".."; 

1111 

1112 
* Pure: ?thesis / ?this / "..." now work for pure metalevel 

1113 
statements as well; 

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

1114 

11097  1115 
* Pure: more robust selection of calculational rules; 
1116 

10858  1117 
* Pure: the builtin notion of 'finished' goal now includes the ==refl 
1118 
rule (as well as the assumption rule); 

1119 

1120 
* Pure: 'thm_deps' command visualizes dependencies of theorems and 

1121 
lemmas, using the graph browser tool; 

1122 

10944  1123 
* Pure: predict failure of "show" in interactive mode; 
1124 

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

1125 
* Pure: 'thms_containing' now takes actual terms as arguments; 
8f8ba41a5e7a
* Pure: 'thms_containing' now takes actual terms as arguments;
wenzelm
parents:
10998
diff
changeset

1126 

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

1127 
* HOL: improved method 'induct'  now handles nonatomic goals 
58bb50f69497
* Isar/HOL: method 'induct' now handles nonatomic goals; as a
wenzelm
parents:
10391
diff
changeset

1128 
(potential INCOMPATIBILITY); tuned error handling; 
58bb50f69497
* Isar/HOL: method 'induct' now handles nonatomic goals; as a
wenzelm
parents:
10391
diff
changeset

1129 

10557  1130 
* HOL: cases and induct rules now provide explicit hints about the 
10547  1131 
number of facts to be consumed (0 for "type" and 1 for "set" rules); 
1132 
any remaining facts are inserted into the goal verbatim; 

1133 

10858  1134 
* HOL: local contexts (aka cases) may now contain term bindings as 
1135 
well; the 'cases' and 'induct' methods new provide a ?case binding for 

1136 
the result to be shown in each case; 

1137 

10770  1138 
* HOL: added 'recdef_tc' command; 
1139 

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

1140 
* isatool convert assists in eliminating legacy ML scripts; 
8f8ba41a5e7a
* Pure: 'thms_containing' now takes actual terms as arguments;
wenzelm
parents:
10998
diff
changeset

1141 

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

1142 

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

1143 
*** HOL *** 
87771e2f49fe
* HOL/Library: a collection of generic theories to be used together
wenzelm
parents:
10224
diff
changeset

1144 

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

1145 
* 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

1146 
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

1147 
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

1148 
HOL/Induct/Multiset, HOL/Induct/Acc (as Accessible_Part), HOL/While 
10337  1149 
(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

1150 

10966  1151 
* HOL/Unix: "Some aspects of Unix filesystem security", a typical 
1152 
modelling and verification task performed in Isabelle/HOL + 

1153 
Isabelle/Isar + Isabelle document preparation (by Markus Wenzel). 

1154 

11094  1155 
* HOL/Algebra: special summation operator SUM no longer exists, it has 
1156 
been replaced by setsum; infix 'assoc' now has priority 50 (like 

1157 
'dvd'); axiom 'one_not_zero' has been moved from axclass 'ring' to 

1158 
'domain', this makes the theory consistent with mathematical 

1159 
literature; 

1160 

10514  1161 
* HOL basics: added overloaded operations "inverse" and "divide" 
10726  1162 
(infix "/"), syntax for generic "abs" operation, generic summation 
11094  1163 
operator \<Sum>; 
10452
abeefb0a79ae
* added overloaded operations "inverse" and "divide" (infix "/");
wenzelm
parents:
10428
diff
changeset

1164 

10391  1165 
* HOL/typedef: simplified package, provide more useful rules (see also 
1166 
HOL/subset.thy); 

1167 

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

1168 
* HOL/datatype: induction rule for arbitrarily branching datatypes is 
6b66a8a530ce
* HOL/datatype: induction rule for arbitrarily branching datatypes is
wenzelm
parents:
10868
diff
changeset

1169 
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

1170 
require atomize_strip_tac to cope with nonatomic premises); 
6b66a8a530ce
* HOL/datatype: induction rule for arbitrarily branching datatypes is
wenzelm
parents:
10868
diff
changeset

1171 

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

1172 
* 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

1173 
to "split_conv" (old name still available for compatibility); 
6b66a8a530ce
* HOL/datatype: induction rule for arbitrarily branching datatypes is
wenzelm
parents:
10868
diff
changeset

1174 

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

1175 
* 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

1176 
rules with string literals); 
6b66a8a530ce
* HOL/datatype: induction rule for arbitrarily branching datatypes is
wenzelm
parents:
10868
diff
changeset

1177 

12245  1178 
* HOLRealHyperreal: this extends HOLReal with the hyperreals 
1179 
and Fleuriot's mechanization of analysis, including the transcendental 

1180 
functions for the reals; 

10756  1181 

11094  1182 
* HOL/Real, HOL/Hyperreal: improved arithmetic simplification; 
10391  1183 

10858  1184 

10474  1185 
*** CTT *** 
1186 

10547  1187 
* CTT: xsymbol support for Pi, Sigma, >, : (membership); note that 
1188 
"lam" is displayed as TWO lambdasymbols 

10474  1189 

10547  1190 
* CTT: theory Main now available, containing everything (that is, Bool 
1191 
and Arith); 

1192 

10474  1193 

10391  1194 
*** General *** 
1195 

10547  1196 
* Pure: the Simplifier has been implemented properly as a derived rule 
1197 
outside of the actual kernel (at last!); the overall performance 

1198 
penalty in practical applications is about 50%, while reliability of 

1199 
the Isabelle inference kernel has been greatly improved; 

1200 

11112  1201 
* print modes "brackets" and "no_brackets" control output of nested => 
1202 
(types) and ==> (props); the default behaviour is "brackets"; 

1203 

10391  1204 
* Provers: fast_tac (and friends) now handle actual objectlogic rules 
1205 
as assumptions as well; 

1206 

11124  1207 
* system: support Poly/ML 4.0; 
1208 

1209 
* system: isatool install handles KDE version 1 or 2; 

1210 

10391  1211 

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

1212 

10103  1213 
New in Isabelle991 (October 2000) 
1214 
 

8015  1215 

10003  1216 
*** Overview of INCOMPATIBILITIES *** 
8014  1217 

8848  1218 
* HOL: simplification of natural numbers is much changed; to partly 
1219 
recover the old behaviour (e.g. to prevent n+n rewriting to #2*n) 

1220 
issue the following ML commands: 

1221 

1222 
Delsimprocs Nat_Numeral_Simprocs.cancel_numerals; 

1223 
Delsimprocs [Nat_Numeral_Simprocs.combine_numerals]; 

8788  1224 

10129  1225 
* HOL: simplification no longer dives into caseexpressions; this is 
1226 
controlled by "t.weak_case_cong" for each datatype t; 

10003  1227 

1228 
* HOL: nat_less_induct renamed to less_induct; 

1229 

1230 
* HOL: systematic renaming of the SOME (Eps) rules, may use isatool 

1231 
fixsome to patch .thy and .ML sources automatically; 

8967  1232 

10003  1233 
select_equality > some_equality 
1234 
select_eq_Ex > some_eq_ex 

1235 
selectI2EX > someI2_ex 

1236 
selectI2 > someI2 

1237 
selectI > someI 

1238 
select1_equality > some1_equality 

1239 
Eps_sym_eq > some_sym_eq_trivial 

1240 
Eps_eq > some_eq_trivial 

1241 

1242 
* HOL: exhaust_tac on datatypes superceded by new generic case_tac; 

1243 

1244 
* HOL: removed obsolete theorem binding expand_if (refer to split_if 

1245 
instead); 

1246 

1247 
* HOL: the recursion equations generated by 'recdef' are now called 

1248 
f.simps instead of f.rules; 

1249 

1250 
* HOL: qed_spec_mp now also handles bounded ALL as well; 

1251 

1252 
* HOL: 0 is now overloaded, so the type constraint ":: nat" may 

1253 
sometimes be needed; 

1254 

1255 
* HOL: the constant for "f``x" is now "image" rather than "op ``"; 

8014  1256 

10065  1257 
* HOL: the constant for "f``x" is now "vimage" rather than "op ``"; 
1258 

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

1259 
* 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

1260 
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

1261 
now "<*lex*>" instead of "**"; 
8705  1262 

10003  1263 
* HOL: theory Sexp is now in HOL/Induct examples (it used to be part 
1264 
of main HOL, but was unused); better use HOL's datatype package; 

9971  1265 

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

1266 
* HOL: removed "symbols" syntax for constant "override" of theory Map; 
d1c2bef01e2f
removed "symbols" syntax for constant "override";
wenzelm
parents:
10129
diff
changeset

1267 
the old syntax may be recovered as follows: 
d1c2bef01e2f
removed "symbols" syntax for constant "override";
wenzelm
parents:
10129
diff
changeset

1268 

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

1269 
syntax (symbols) 
d1c2bef01e2f
removed "symbols" syntax for constant "override";
wenzelm
parents:
10129
diff
changeset

1270 
override :: "('a ~=> 'b) => ('a ~=> 'b) => ('a ~=> 'b)" 
d1c2bef01e2f
removed "symbols" syntax for constant "override";
wenzelm
parents:
10129
diff
changeset

1271 
(infixl "\\<oplus>" 100) 
d1c2bef01e2f
removed "symbols" syntax for constant "override";
wenzelm
parents:
10129
diff
changeset

1272 

8848  1273 
* HOL/Real: "rabs" replaced by overloaded "abs" function; 
1274 

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

1275 
* 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

1276 
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

1277 
internally; 
c0c583ce0b0b
* HOL/ML: even fewer consts are declared as global (see theories Ord,
wenzelm
parents:
8848
diff
changeset

1278 

10003  1279 
* HOL and ZF: syntax for quotienting wrt an equivalence relation 
1280 
changed from A/r to A//r; 

9908  1281 

10003  1282 
* ZF: new treatment of arithmetic (nat & int) may break some old 
1283 
proofs; 

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

1284 

10003  1285 
* Isar: renamed some attributes (RS > THEN, simplify > simplified, 
1286 
rulify > rule_format, elimify > elim_format, ...); 

9542  1287 

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

1288 
* Isar/Provers: intro/elim/dest attributes changed; renamed 
fe05af7ec816
renamed atts: rulify to rule_format, elimify to elim_format;
wenzelm
parents:
9937
diff
changeset

1289 
intro/intro!/intro!! flags to intro!/intro/intro? (in most cases, one 
9937  1290 
should have to change intro!! to intro? only); replaced "delrule" by 
1291 
"rule del"; 

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

1292 

9612  1293 
* Isar/HOL: renamed "intrs" to "intros" in inductive definitions; 
1294 

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

1295 
* Provers: strengthened force_tac by using new first_best_tac; 
9402  1296 

10003  1297 
* LaTeX document preparation: several changes of isabelle.sty (see 
1298 
lib/texinputs); 

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

1299 

8014  1300 

8487  1301 
*** Document preparation *** 
8358
a57d72b5d272
* isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents:
8283
diff
changeset

1302 

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

1303 
* formal comments (text blocks etc.) in newstyle theories may now 
9753  1304 
contain antiquotations of thm/prop/term/typ/text to be presented 
1305 
according to latex print mode; concrete syntax is like this: 

1306 
@{term[show_types] "f(x) = a + x"}; 

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

1307 

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

1308 
* isatool mkdir provides easy setup of Isabelle session directories, 
8518  1309 
including proper document sources; 
8358
a57d72b5d272
* isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents:
8283
diff
changeset

1310 

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

1311 
* generated LaTeX sources are now deleted after successful run 
a57d72b5d272
* isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents:
8283
diff
changeset

1312 
(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

1313 
of isatool usedir; 
a57d72b5d272
* isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents:
8283
diff
changeset

1314 

8566  1315 
* isatool usedir D now lets isatool latex o sty update the Isabelle 
10003  1316 
style files, achieving selfcontained LaTeX sources and simplifying 
1317 
LaTeX debugging; 

8566  1318 

8518  1319 
* 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

1320 

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

1321 
* browser info session directories are now selfcontained (may be put 
9437
93e91040c286
* Isar/Provers: intro/elim/dest attributes: changed
wenzelm
parents:
9402
diff
changeset

1322 
on WWW server seperately); improved graphs of nested sessions; removed 
93e91040c286
* Isar/Provers: intro/elim/dest attributes: changed
wenzelm
parents:
9402
diff
changeset

1323 
graph for 'all sessions'; 
9057
af1ca1acf292
* browser info session directories are now selfcontained (may be put
wenzelm
parents:
9052
diff
changeset

1324 

10003  1325 
* several improvements in isabelle style files; \isabellestyle{it} 
1326 
produces fake math mode output; \isamarkupheader is now \section by 

1327 
default; see lib/texinputs/isabelle.sty etc.; 

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

1328 

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

1329 

8184  1330 
*** Isar *** 
1331 

10003  1332 
* Isar/Pure: local results and corresponding term bindings are now 
1333 
subject to HindleyMilner polymorphism (similar to ML); this 

1334 
accommodates incremental typeinference very nicely; 

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

1335 

10003  1336 
* Isar/Pure: new derived language element 'obtain' supports 
1337 
generalized existence reasoning; 

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

1338 

10003  1339 
* Isar/Pure: new calculational elements 'moreover' and 'ultimately' 
1340 
support accumulation of results, without applying any rules yet; 

1341 
useful to collect intermediate results without explicit name 

1342 
references, and for use with transitivity rules with more than 2 

1343 
premises; 

8184  1344 

10003  1345 
* Isar/Pure: scalable support for caseanalysis type proofs: new 
1346 
'case' language element refers to local contexts symbolically, as 

1347 
produced by certain proof methods; internally, case names are attached 

1348 
to theorems as "tags"; 

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

1349 

10003  1350 
* Isar/Pure: theory command 'hide' removes declarations from 
9330
6861e3b00155
HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents:
9288
diff
changeset

1351 
class/type/const name spaces; 
6861e3b00155
HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents:
9288
diff
changeset

1352 

10003  1353 
* 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

1354 
indicate potential overloading; 
6861e3b00155
HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents:
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changeset

1355 

10003  1356 
* Isar/Pure: changed syntax of local blocks from {{ }} to { }; 
8621
8ba0f90f6f35
* Isar/Pure: local results and corresponding term bindings are now
wenzelm
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diff
changeset

1357 

10003  1358 
* Isar/Pure: syntax of sorts made 'inner', i.e. have to write 
1359 
"{a,b,c}" instead of {a,b,c}; 

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

1360 

10003  1361 
* Isar/Pure now provides its own version of intro/elim/dest 
1362 
attributes; useful for building new logics, but beware of confusion 

1363 
with the version in Provers/classical; 

9612  1364 

10003  1365 
* Isar/Pure: the local context of (nonatomic) goals is provided via 
1366 
case name 'antecedent'; 

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

1367 

10003  1368 
* Isar/Pure: removed obsolete 'transfer' attribute (transfer of thms 
1369 
to the current context is now done automatically); 

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

1370 

10003  1371 
* Isar/Pure: theory command 'method_setup' provides a simple interface 
1372 
for definining proof methods in ML; 

9612  1373 

10003  1374 
* Isar/Provers: intro/elim/dest attributes changed; renamed 
9941
fe05af7ec816
renamed atts: rulify to rule_format, elimify to elim_format;
wenzelm
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diff
changeset

1375 
intro/intro!/intro!! flags to intro!/intro/intro? (INCOMPATIBILITY, in 
fe05af7ec816
renamed atts: rulify to rule_format, elimify to elim_format;
wenzelm
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changeset

1376 
most cases, one should have to change intro!! to intro? only); 
fe05af7ec816
renamed atts: rulify to rule_format, elimify to elim_format;
wenzelm
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diff
changeset

1377 
replaced "delrule" by "rule del"; 
8283
0a319c5746eb
* Pure now provides its own version of intro/elim/dest attributes;
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diff
changeset

1378 

10003  1379 
* Isar/Provers: new 'hypsubst' method, plain 'subst' method and 
1380 
'symmetric' attribute (the latter supercedes [RS sym]); 

1381 

1382 
* Isar/Provers: splitter support (via 'split' attribute and 'simp' 

1383 
method modifier); 'simp' method: 'only:' modifier removes loopers as 

1384 
well (including splits); 

1385 

1386 
* Isar/Provers: Simplifier and Classical methods now support all kind 

1387 
of modifiers used in the past, including 'cong', 'iff', etc. 

1388 

1389 
* Isar/Provers: added 'fastsimp' and 'clarsimp' methods (combination 

1390 
of Simplifier and Classical reasoner); 

1391 

1392 
* Isar/HOL: new proof method 'cases' and improved version of 'induct' 

1393 
now support named cases; major packages (inductive, datatype, primrec, 

1394 
recdef) support case names and properly name parameters; 

9612  1395 

10003  1396 
* Isar/HOL: new transitivity rules for substitution in inequalities  
1397 
monotonicity conditions are extracted to be proven at end of 

1398 
calculations; 

1399 

1400 
* Isar/HOL: removed 'case_split' thm binding, should use 'cases' proof 

1401 
method anyway; 

1402 

1403 
* Isar/HOL: removed old expand_if = split_if; theorems if_splits = 

1404 
split_if split_if_asm; datatype package provides theorems foo.splits = 

1405 
foo.split foo.split_asm for each datatype; 

1406 

1407 
* Isar/HOL: tuned inductive package, rename "intrs" to "intros" 

1408 
(potential INCOMPATIBILITY), emulation of mk_cases feature for proof 
