author  nipkow 
Mon, 16 Aug 2004 14:21:54 +0200  
changeset 15130  dc6be28d7f4e 
parent 15127  2550a5578d39 
child 15148  3879dc0e9a9c 
permissions  rwrr 
5363  1 
Isabelle NEWS  history userrelevant changes 
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============================================== 

2553  3 

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New in this Isabelle release 
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*** General *** 
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* Theory headers: the new header syntax for Isar theories is 
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11 
theory <name> 

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import <theory1> ... <theoryn> 

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begin 

14 

15 
optionally also with a "files" section. The old syntax 

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theory <name> = <theory1> + ... + <theoryn>: 

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will still be supported for some time but will eventually disappear. 

20 
The syntax of oldstyle theories has not changed. 

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

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

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to observe strictly sequential dependencies of definitions within a 

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

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

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'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 
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application, using the new syntax \<^bsub>term\<^esub> for arbitrary 

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expressions. Secondly, in a local context with structure 

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

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

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show_structs controls printing of implicit structures. Typical 

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applications of these concepts involve record types and locales. 

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* Pure: clear separation of logical types and nonterminals, where the 
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latter may only occur in 'syntax' specifications or type 
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abbreviations. Before that distinction was only partially 
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implemented via type class "logic" vs. "{}". Potential 
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INCOMPATIBILITY in rare cases of improper use of 'types'/'consts' 
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instead of 'nonterminals'/'syntax'. Some very exotic syntax 
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specifications may require further adaption (e.g. Cube/Base.thy). 
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14854  54 
* Pure: removed obsolete type class "logic", use the top sort {} 
55 
instead. Note that nonlogical types should be declared as 

56 
'nonterminals' rather than 'types'. INCOMPATIBILITY for new 

57 
objectlogic specifications. 

58 

15022  59 
* Pure: print_tac now outputs the goal through the trace channel. 
60 

61 
* Pure: reference Namespace.unique_names included. If true the 

62 
(shortest) namespaceprefix is printed to disambiguate conflicts (as 

63 
yet). If false the first entry wins (as during parsing). Default 

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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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Classical.add_context_safe_wrapper 
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Classical.del_context_safe_wrapper 
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Classical.add_context_unsafe_wrapper 
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Classical.del_context_unsafe_wrapper 
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IMPORTANT NOTE: proof tools (methods etc.) need to use 
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local_simpset_of and local_claset_of to instead of the primitive 
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Simplifier.get_local_simpset and Classical.get_local_claset, 
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respectively, in order to see the context dependent fields! 
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* Document preparation: antiquotations now provide the option 
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'locale=NAME' to specify an alternative context used for evaluating 
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and printing the subsequent argument, as in @{thm [locale=LC] 
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fold_commute}, for example. 
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14934  117 
* Document preparation: commands 'display_drafts' and 'print_drafts' 
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perform simple output of raw sources. Only those symbols that do 

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not require additional LaTeX packages (depending on comments in 

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

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

122 
these are subject to the DVI_VIEWER and PRINT_COMMAND settings, 

123 
respectively. 

124 

14917  125 
* ML: output via the Isabelle channels of writeln/warning/error 
126 
etc. is now passed through Output.output, with a hook for arbitrary 

127 
transformations depending on the print_mode (cf. Output.add_mode  

128 
the first active mode that provides a output function wins). 

129 
Already formatted output may be embedded into further text via 

130 
Output.raw; the result of Pretty.string_of/str_of and derived 

131 
functions (string_of_term/cterm/thm etc.) is already marked raw to 

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accommodate easy composition of diagnostic messages etc. 

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

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

135 
bypassing the standard channels (writeln etc.), or in token 

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translations to produce properly formatted results; Output.raw is 

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required when capturing already output material that will eventually 

14972  138 
be presented to the user a second time. For the default print mode, 
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both Output.output and Output.raw have no effect. 

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*** Isar *** 
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* Locales: 

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 "includes" disallowed in declaration of named locales (command "locale"). 

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*** HOL *** 
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14731  150 
* HOL/record: reimplementation of records. Improved scalability for 
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records with many fields, avoiding performance problems for type 

152 
inference. Records are no longer composed of nested field types, but 

153 
of nested extension types. Therefore the record type only grows 

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

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

156 
INCOMPATIBILITY only in strange cases, where the theory depends on 

157 
the old record representation. The type generated for a record is 

158 
called <record_name>_ext_type. 

159 

15022  160 
* HOL/record: Reference record_quick_and_dirty_sensitive can be 
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enabled to skip the proofs triggered by a record definition or a 

162 
simproc (if quick_and_dirty is enabled). Definitions of large 

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records can take quite long. 

164 

165 
* HOL/record: "record_upd_simproc" for simplification of multiple 

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record updates enabled by default. Moreover, trivial updates are 

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

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occasionally, since simplification is more powerful by default. 

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* HOL: symbolic syntax of Hilbert Choice Operator is now as follows: 
171 

172 
syntax (epsilon) 

173 
"_Eps" :: "[pttrn, bool] => 'a" ("(3\<some>_./ _)" [0, 10] 10) 

174 

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

176 
and xsymbol; use option 'm epsilon' to get it actually printed. 

177 
Moreover, the mathematically important symbolic identifier 

178 
\<epsilon> becomes available as variable, constant etc. 

179 

15046  180 
* HOL/SetInterval: The syntax for open intervals has changed: 
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Old New 

183 
{..n(} > {..<n} 

184 
{)n..} > {n<..} 

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

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

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

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189 
The old syntax is still supported but will disappear in the future. 

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For conversion use the following emacs search and replace patterns: 

191 

192 
{)\([^\.]*\)\.\. > {\1<\.\.} 

193 
\.\.\([^(}]*\)(} > \.\.<\1} 

194 

195 
They are not perfect but work quite well. 

196 

15073  197 
* HOL: The syntax for 'setsum', summation over finite sets, has changed: 
198 

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

200 
and is now either 'SUM x:A. e' or '\<Sum>x\<in>A. e'. 

201 

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There is new syntax for summation over finite sets: 

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15050  204 
'\<Sum>x  P. e' is the same as 'setsum (%x. e) {x. P}' 
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'\<Sum>x=a..b. e' is the same as 'setsum (%x. e) {a..b}' 

206 
'\<Sum>x=a..<b. e' is the same as 'setsum (%x. e) {a..<b}' 

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

15046  208 

209 
Function 'Summation' over nat is gone, its syntax '\<Sum>i<k. e' 

210 
now translates into 'setsum' as above. 

211 

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* HOL/Simplifier: Is now set up to reason about transitivity chains 
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involving "trancl" (r^+) and "rtrancl" (r^*) by setting up tactics 
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provided by Provers/trancl.ML as additional solvers. 
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INCOMPATIBILITY: old proofs break occasionally as simplification may 
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now solve more goals than previously. 
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*** HOLCF *** 
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* HOLCF: discontinued special version of 'constdefs' (which used to 
14731  222 
support continuous functions) in favor of the general Pure one with 
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full typeinference. 

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*** ZF *** 
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* ZF/ex/{Group,Ring}: examples in abstract algebra, including the 
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First Isomorphism Theorem (on quotienting by the kernel of a 
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homomorphism). 
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* ZF/Simplifier: install second copy of type solver that actually 
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makes use of TC rules declared to Isar proof contexts (or locales); 
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the old version is still required for ML proof scripts. 
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236 

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New in Isabelle2004 (April 2004) 
239 
 

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*** General *** 
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243 
* Provers/order.ML: new efficient reasoner for partial and linear orders. 
c5c47703f763
Efficient, graphbased reasoner for linear and partial orders.
ballarin
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14389
diff
changeset

244 
Replaces linorder.ML. 
c5c47703f763
Efficient, graphbased reasoner for linear and partial orders.
ballarin
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14389
diff
changeset

245 

14606  246 
* Pure: Greek letters (except small lambda, \<lambda>), as well as Gothic 
247 
(\<aa>...\<zz>\<AA>...\<ZZ>), calligraphic (\<A>...\<Z>), and Euler 

14173  248 
(\<a>...\<z>), are now considered normal letters, and can therefore 
249 
be used anywhere where an ASCII letter (a...zA...Z) has until 

250 
now. COMPATIBILITY: This obviously changes the parsing of some 

251 
terms, especially where a symbol has been used as a binder, say 

252 
'\<Pi>x. ...', which is now a type error since \<Pi>x will be parsed 

253 
as an identifier. Fix it by inserting a space around former 

254 
symbols. Call 'isatool fixgreek' to try to fix parsing errors in 

255 
existing theory and ML files. 

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

256 

14237  257 
* Pure: Macintosh and Windows linebreaks are now allowed in theory files. 
258 

14731  259 
* Pure: single letter sub/superscripts (\<^isub> and \<^isup>) are now 
260 
allowed in identifiers. Similar to Greek letters \<^isub> is now considered 

261 
a normal (but invisible) letter. For multiple letter subscripts repeat 

262 
\<^isub> like this: x\<^isub>1\<^isub>2. 

14233  263 

14333  264 
* Pure: There are now sub/superscripts that can span more than one 
265 
character. Text between \<^bsub> and \<^esub> is set in subscript in 

14606  266 
ProofGeneral and LaTeX, text between \<^bsup> and \<^esup> in 
267 
superscript. The new control characters are not identifier parts. 

14333  268 

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

269 
* Pure: Controlsymbols of the form \<^raw:...> will literally print the 
14606  270 
content of "..." to the latex file instead of \isacntrl... . The "..." 
271 
may consist of any printable characters excluding the end bracket >. 

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

272 

14237  273 
* Pure: Using new Isar command "finalconsts" (or the ML functions 
274 
Theory.add_finals or Theory.add_finals_i) it is now possible to 

275 
declare constants "final", which prevents their being given a definition 

276 
later. It is useful for constants whose behaviour is fixed axiomatically 

14224  277 
rather than definitionally, such as the metalogic connectives. 
278 

14606  279 
* Pure: 'instance' now handles general arities with general sorts 
280 
(i.e. intersections of classes), 

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

281 

14547  282 
* Presentation: generated HTML now uses a CSS style sheet to make layout 
14731  283 
(somewhat) independent of content. It is copied from lib/html/isabelle.css. 
14547  284 
It can be changed to alter the colors/layout of generated pages. 
285 

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

286 

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

287 
*** Isar *** 
dbd16ebaf907
Method rule_tac understands Isar contexts: documentation.
ballarin
parents:
14173
diff
changeset

288 

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

289 
* Tactic emulation methods rule_tac, erule_tac, drule_tac, frule_tac, 
859b11514537
Experimental command for instantiation of locales in proof contexts:
ballarin
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14503
diff
changeset

290 
cut_tac, subgoal_tac and thin_tac: 
14175
dbd16ebaf907
Method rule_tac understands Isar contexts: documentation.
ballarin
parents:
14173
diff
changeset

291 
 Now understand static (Isar) contexts. As a consequence, users of Isar 
dbd16ebaf907
Method rule_tac understands Isar contexts: documentation.
ballarin
parents:
14173
diff
changeset

292 
locales are no longer forced to write Isar proof scripts. 
dbd16ebaf907
Method rule_tac understands Isar contexts: documentation.
ballarin
parents:
14173
diff
changeset

293 
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

294 
emulations. 
dbd16ebaf907
Method rule_tac understands Isar contexts: documentation.
ballarin
parents:
14173
diff
changeset

295 
 INCOMPATIBILITY: names of variables to be instantiated may no 
14211
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
parents:
14199
diff
changeset

296 
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

297 
This is consistent with the instantiation attribute "where". 
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
parents:
14199
diff
changeset

298 

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

299 
* Attributes "where" and "of": 
14285
92ed032e83a1
Isar: where attribute supports instantiation of type vars.
ballarin
parents:
14283
diff
changeset

300 
 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

301 
the instantiation string. This fixes a bug that caused instantiated 
92ed032e83a1
Isar: where attribute supports instantiation of type vars.
ballarin
parents:
14283
diff
changeset

302 
theorems to have too special types in some circumstances. 
92ed032e83a1
Isar: where attribute supports instantiation of type vars.
ballarin
parents:
14283
diff
changeset

303 
 "where" permits explicit instantiations of type variables. 
14257
a7ef3f7588c5
Type inference bug in Isar attributes "where" and "of" fixed.
ballarin
parents:
14255
diff
changeset

304 

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

305 
* Calculation commands "moreover" and "also" no longer interfere with 
c5078f6c99a9
* Calculation commands "moreover" and "also" no longer interfere with
wenzelm
parents:
14551
diff
changeset

306 
current facts ("this"), admitting arbitrary combinations with "then" 
c5078f6c99a9
* Calculation commands "moreover" and "also" no longer interfere with
wenzelm
parents:
14551
diff
changeset

307 
and derived forms. 
14283  308 

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

309 
* Locales: 
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
parents:
14199
diff
changeset

310 
 Goal statements involving the context element "includes" no longer 
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
parents:
14199
diff
changeset

311 
generate theorems with internal delta predicates (those ending on 
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
parents:
14199
diff
changeset

312 
"_axioms") in the premise. 
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
parents:
14199
diff
changeset

313 
Resolve particular premise with <locale>.intro to obtain old form. 
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
parents:
14199
diff
changeset

314 
 Fixed bug in type inference ("unify_frozen") that prevented mix of target 
7286c187596d
Improvements to Isar/Locales: premises generated by "includes" elements
ballarin
parents:
14199
diff
changeset

315 
specification and "includes" elements in goal statement. 
14254
342634f38451
Isar/Locales: <loc>.intro and <loc>.axioms no longer intro? and elim? by
ballarin
parents:
14243
diff
changeset

316 
 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

317 
[intro?] and [elim?] (respectively) by default. 
14508
859b11514537
Experimental command for instantiation of locales in proof contexts:
ballarin
parents:
14503
diff
changeset

318 
 Experimental command for instantiation of locales in proof contexts: 
14551  319 
instantiate <label>[<attrs>]: <loc> 
14508
859b11514537
Experimental command for instantiation of locales in proof contexts:
ballarin
parents:
14503
diff
changeset

320 
Instantiates locale <loc> and adds all its theorems to the current context 
14551  321 
taking into account their attributes. Label and attrs are optional 
322 
modifiers, like in theorem declarations. If present, names of 

323 
instantiated theorems are qualified with <label>, and the attributes 

324 
<attrs> are applied after any attributes these theorems might have already. 

325 
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

326 
"<loc> t1 ... tn" is expected from which instantiations of the parameters 
14551  327 
are derived. The command does not support oldstyle locales declared 
328 
with "locale (open)". 

329 
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

330 

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

331 
* HOL: Tactic emulation methods induct_tac and case_tac understand static 
dbd16ebaf907
Method rule_tac understands Isar contexts: documentation.
ballarin
parents:
14173
diff
changeset

332 
(Isar) contexts. 
dbd16ebaf907
Method rule_tac understands Isar contexts: documentation.
ballarin
parents:
14173
diff
changeset

333 

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

334 

14136  335 
*** HOL *** 
336 

14624  337 
* Proof import: new image HOL4 contains the imported library from 
338 
the HOL4 system with about 2500 theorems. It is imported by 

339 
replaying proof terms produced by HOL4 in Isabelle. The HOL4 image 

340 
can be used like any other Isabelle image. See 

341 
HOL/Import/HOL/README for more information. 

342 

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

343 
* Simplifier: 
c5c47703f763
Efficient, graphbased reasoner for linear and partial orders.
ballarin
parents:
14389
diff
changeset

344 
 Much improved handling of linear and partial orders. 
c5c47703f763
Efficient, graphbased reasoner for linear and partial orders.
ballarin
parents:
14389
diff
changeset

345 
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

346 
"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

347 
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

348 
to solve goals from the assumptions. 
c5c47703f763
Efficient, graphbased reasoner for linear and partial orders.
ballarin
parents:
14389
diff
changeset

349 
 INCOMPATIBILITY: old proofs break occasionally. Typically, applications 
c5c47703f763
Efficient, graphbased reasoner for linear and partial orders.
ballarin
parents:
14389
diff
changeset

350 
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

351 
is solved by simplification already. 
c5c47703f763
Efficient, graphbased reasoner for linear and partial orders.
ballarin
parents:
14389
diff
changeset

352 

14731  353 
* Numerics: new theory Ring_and_Field contains over 250 basic numerical laws, 
14389  354 
all proved in axiomatic type classes for semirings, rings and fields. 
355 

356 
* Numerics: 

357 
 Numeric types (nat, int, and in HOLComplex rat, real, complex, etc.) are 

14731  358 
now formalized using the Ring_and_Field theory mentioned above. 
14389  359 
 INCOMPATIBILITY: simplification and arithmetic behaves somewhat differently 
360 
than before, because now they are set up once in a generic manner. 

14731  361 
 INCOMPATIBILITY: many typespecific arithmetic laws have gone. 
14480  362 
Look for the general versions in Ring_and_Field (and Power if they concern 
363 
exponentiation). 

14389  364 

14401  365 
* Type "rat" of the rational numbers is now available in HOLComplex. 
14389  366 

14255  367 
* Records: 
368 
 Record types are now by default printed with their type abbreviation 

369 
instead of the list of all field types. This can be configured via 

370 
the reference "print_record_type_abbr". 

14731  371 
 Simproc "record_upd_simproc" for simplification of multiple updates added 
14255  372 
(not enabled by default). 
14427  373 
 Simproc "record_ex_sel_eq_simproc" to simplify EX x. sel r = x resp. 
374 
EX x. x = sel r to True (not enabled by default). 

14255  375 
 Tactic "record_split_simp_tac" to split and simplify records added. 
14731  376 

14136  377 
* 'specification' command added, allowing for definition by 
14224  378 
specification. There is also an 'ax_specification' command that 
379 
introduces the new constants axiomatically. 

14136  380 

14375  381 
* arith(_tac) is now able to generate counterexamples for reals as well. 
382 

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

383 
* HOLAlgebra: new locale "ring" for noncommutative rings. 
dc677b35e54f
New lemmas about inversion of restricted functions.
ballarin
parents:
14398
diff
changeset

384 

14243  385 
* HOLex: InductiveInvariant_examples illustrates advanced recursive function 
14610  386 
definitions, thanks to Sava Krsti\'{c} and John Matthews. 
387 

14731  388 
* HOLMatrix: a first theory for matrices in HOL with an application of 
14610  389 
matrix theory to linear programming. 
14136  390 

14380  391 
* Unions and Intersections: 
15119  392 
The latex output syntax of UN and INT has been changed 
393 
from "\Union x \in A. B" to "\Union_{x \in A} B" 

394 
i.e. the index formulae has become a subscript. 

395 
Similarly for "\Union x. B", and for \Inter instead of \Union. 

14380  396 

14418  397 
* Unions and Intersections over Intervals: 
14731  398 
There is new short syntax "UN i<=n. A" for "UN i:{0..n}. A". There is 
399 
also an xsymbol version with subscripts "\<Union>\<^bsub>i <= n\<^esub>. A" 

14418  400 
like in normal math, and corresponding versions for < and for intersection. 
401 

14401  402 
* ML: the legacy theory structures Int and List have been removed. They had 
403 
conflicted with ML Basis Library structures having the same names. 

14380  404 

14464  405 
* 'refute' command added to search for (finite) countermodels. Only works 
406 
for a fragment of HOL. The installation of an external SAT solver is 

407 
highly recommended. See "HOL/Refute.thy" for details. 

408 

14602  409 
* 'quickcheck' command: Allows to find counterexamples by evaluating 
410 
formulae under an assignment of free variables to random values. 

411 
In contrast to 'refute', it can deal with inductive datatypes, 

412 
but cannot handle quantifiers. See "HOL/ex/Quickcheck_Examples.thy" 

413 
for examples. 

14464  414 

14606  415 

14536  416 
*** HOLCF *** 
417 

418 
* Streams now come with concatenation and are part of the HOLCF image 

419 

14572  420 

421 

14136  422 
New in Isabelle2003 (May 2003) 
14606  423 
 
14136  424 

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

425 
*** General *** 
306ef3aef61b
* improved thms_containing: proper indexing of facts instead of raw
wenzelm
parents:
13190
diff
changeset

426 

13618  427 
* Provers/simplifier: 
428 

13781  429 
 Completely reimplemented method simp (ML: Asm_full_simp_tac): 
13618  430 
Assumptions are now subject to complete mutual simplification, 
431 
not just from left to right. The simplifier now preserves 

432 
the order of assumptions. 

433 

434 
Potential INCOMPATIBILITY: 

435 

13781  436 
 simp sometimes diverges where the old version did 
437 
not, e.g. invoking simp on the goal 

13618  438 

439 
[ P (f x); y = x; f x = f y ] ==> Q 

440 

13781  441 
now gives rise to the infinite reduction sequence 
442 

443 
P(f x) (f x = f y)> P(f y) (y = x)> P(f x) (f x = f y)> ... 

444 

445 
Using "simp (asm_lr)" (ML: Asm_lr_simp_tac) instead often solves this 

446 
kind of problem. 

447 

448 
 Tactics combining classical reasoner and simplification (such as auto) 

449 
are also affected by this change, because many of them rely on 

450 
simp. They may sometimes diverge as well or yield a different numbers 

451 
of subgoals. Try to use e.g. force, fastsimp, or safe instead of auto 

452 
in case of problems. Sometimes subsequent calls to the classical 

453 
reasoner will fail because a preceeding call to the simplifier too 

454 
eagerly simplified the goal, e.g. deleted redundant premises. 

13618  455 

456 
 The simplifier trace now shows the names of the applied rewrite rules 

457 

13829  458 
 You can limit the number of recursive invocations of the simplifier 
459 
during conditional rewriting (where the simplifie tries to solve the 

460 
conditions before applying the rewrite rule): 

461 
ML "simp_depth_limit := n" 

462 
where n is an integer. Thus you can force termination where previously 

463 
the simplifier would diverge. 

464 

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

465 
 Accepts free variables as head terms in congruence rules. Useful in Isar. 
13829  466 

13938  467 
 No longer aborts on failed congruence proof. Instead, the 
468 
congruence is ignored. 

469 

14008  470 
* Pure: New generic framework for extracting programs from constructive 
471 
proofs. See HOL/Extraction.thy for an example instantiation, as well 

472 
as HOL/Extraction for some case studies. 

473 

13868  474 
* Pure: The main goal of the proof state is no longer shown by default, only 
475 
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

476 
PG menu: Isabelle/Isar > Settings > Show Main Goal 
13815  477 
(ML: Proof.show_main_goal). 
478 

479 
* Pure: You can find all matching introduction rules for subgoal 1, i.e. all 

480 
rules whose conclusion matches subgoal 1: 

481 
PG menu: Isabelle/Isar > Show me > matching rules 

482 
The rules are ordered by how closely they match the subgoal. 

483 
In particular, rules that solve a subgoal outright are displayed first 

484 
(or rather last, the way they are printed). 

485 
(ML: ProofGeneral.print_intros()) 

486 

487 
* Pure: New flag trace_unify_fail causes unification to print 

13781  488 
diagnostic information (PG: in trace buffer) when it fails. This is 
489 
useful for figuring out why single step proofs like rule, erule or 

490 
assumption failed. 

491 

13815  492 
* Pure: Locale specifications now produce predicate definitions 
13410
f2cd09766864
* Pure: locale specifications now produce predicate definitions;
wenzelm
parents:
13344
diff
changeset

493 
according to the body of text (covering assumptions modulo local 
f2cd09766864
* Pure: locale specifications now produce predicate definitions;
wenzelm
parents:
13344
diff
changeset

494 
definitions); predicate "loc_axioms" covers newly introduced text, 
f2cd09766864
* Pure: locale specifications now produce predicate definitions;
wenzelm
parents:
13344
diff
changeset

495 
while "loc" is cumulative wrt. all included locale expressions; the 
f2cd09766864
* Pure: locale specifications now produce predicate definitions;
wenzelm
parents:
13344
diff
changeset

496 
latter view is presented only on export into the global theory 
f2cd09766864
* Pure: locale specifications now produce predicate definitions;
wenzelm
parents:
13344
diff
changeset

497 
context; potential INCOMPATIBILITY, use "(open)" option to fall back 
f2cd09766864
* Pure: locale specifications now produce predicate definitions;
wenzelm
parents:
13344
diff
changeset

498 
on the old view without predicates; 
f2cd09766864
* Pure: locale specifications now produce predicate definitions;
wenzelm
parents:
13344
diff
changeset

499 

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

500 
* 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

501 
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

502 
``var x + var y + struct M'' as import; 
83f41b047a39
* Pure: predefined locales "var" and "struct" are useful for sharing
wenzelm
parents:
13443
diff
changeset

503 

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

504 
* 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

505 
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

506 
include local facts of proof configuration (also covers active 
13541  507 
locales), cover fixed variables in index; may use "_" in term 
508 
specification; an optional limit for the number of printed facts may 

509 
be given (the default is 40); 

510 

511 
* Pure: disallow duplicate fact bindings within newstyle theory files 

512 
(batchmode only); 

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

513 

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

514 
* Provers: improved induct method: assumptions introduced by case 
07747943c626
* Provers: Simplifier.simproc(_i) now provide sane interface for
wenzelm
parents:
13459
diff
changeset

515 
"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

516 
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

517 

13550  518 
* Provers: the function blast.overloaded has been removed: all constants 
519 
are regarded as potentially overloaded, which improves robustness in exchange 

520 
for slight decrease in efficiency; 

521 

13781  522 
* Provers/linorder: New generic prover for transitivity reasoning over 
523 
linear orders. Note: this prover is not efficient! 

524 

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

525 
* 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

526 
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

527 

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

528 

13158  529 
*** HOL *** 
530 

13899  531 
* arith(_tac) 
532 

533 
 Produces a counter example if it cannot prove a goal. 

534 
Note that the counter example may be spurious if the goal is not a formula 

535 
of quantifierfree linear arithmetic. 

536 
In ProofGeneral the counter example appears in the trace buffer. 

537 

538 
 Knows about div k and mod k where k is a numeral of type nat or int. 

539 

540 
 Calls full Presburger arithmetic (by Amine Chaieb) if quantifierfree 

541 
linear arithmetic fails. This takes account of quantifiers and divisibility. 

14731  542 
Presburger arithmetic can also be called explicitly via presburger(_tac). 
13899  543 

544 
* simp's arithmetic capabilities have been enhanced a bit: it now 

545 
takes ~= in premises into account (by performing a case split); 

546 

547 
* simp reduces "m*(n div m) + n mod m" to n, even if the two summands 

548 
are distributed over a sum of terms; 

549 

13735  550 
* New tactic "trans_tac" and method "trans" instantiate 
551 
Provers/linorder.ML for axclasses "order" and "linorder" (predicates 

14731  552 
"<=", "<" and "="). 
553 

554 
* function INCOMPATIBILITIES: Pisets have been redefined and moved from main 

13587  555 
HOL to Library/FuncSet; constant "Fun.op o" is now called "Fun.comp"; 
556 

13443  557 
* 'typedef' command has new option "open" to suppress the set 
558 
definition; 

559 

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

560 
* 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

561 
Finite_Set); 
13492  562 

13443  563 
* attribute [symmetric] now works for relations as well; it turns 
564 
(x,y) : R^1 into (y,x) : R, and vice versa; 

565 

13613  566 
* induct over a !!quantified statement (say !!x1..xn): 
567 
each "case" automatically performs "fix x1 .. xn" with exactly those names. 

568 

13899  569 
* Map: `empty' is no longer a constant but a syntactic abbreviation for 
570 
%x. None. Warning: empty_def now refers to the previously hidden definition 

571 
of the empty set. 

572 

14018  573 
* Algebra: formalization of classical algebra. Intended as base for 
574 
any algebraic development in Isabelle. Currently covers group theory 

575 
(up to Sylow's theorem) and ring theory (Universal Property of 

576 
Univariate Polynomials). Contributions welcome; 

13960  577 

578 
* GroupTheory: deleted, since its material has been moved to Algebra; 

579 

14731  580 
* Complex: new directory of the complex numbers with numeric constants, 
581 
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

582 
nonstandard (Jacques Fleuriot); 
2160abf7cfe7
removal of the image HOLReal and merging of HOLRealex with HOLComplexex
paulson
parents:
13960
diff
changeset

583 

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

584 
* 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

585 

14731  586 
* 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

587 
Fleuriot); 
13960  588 

13549  589 
* Real/HahnBanach: updated and adapted to locales; 
590 

13995  591 
* NumberTheory: added Gauss's law of quadratic reciprocity (by Avigad, 
592 
Gray and Kramer); 

13872  593 

594 
* UNITY: added the MeierSanders theory of progress sets; 

595 

14011  596 
* MicroJava: bytecode verifier and lightweight bytecode verifier 
597 
as abstract algorithms, instantiated to the JVM; 

598 

14010  599 
* Bali: Java source language formalization. Type system, operational 
600 
semantics, axiomatic semantics. Supported language features: 

601 
classes, interfaces, objects,virtual methods, static methods, 

602 
static/instance fields, arrays, access modifiers, definite 

603 
assignment, exceptions. 

13549  604 

14011  605 

13549  606 
*** ZF *** 
607 

608 
* ZF/Constructible: consistency proof for AC (Gödel's constructible 

609 
universe, etc.); 

610 

13872  611 
* Main ZF: virtually all theories converted to newstyle format; 
13518  612 

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

613 

13478  614 
*** ML *** 
615 

616 
* Pure: Tactic.prove provides sane interface for internal proofs; 

617 
omits the infamous "standard" operation, so this is more appropriate 

618 
than prove_goalw_cterm in many situations (e.g. in simprocs); 

619 

620 
* Pure: improved error reporting of simprocs; 

621 

622 
* Provers: Simplifier.simproc(_i) provides sane interface for setting 

623 
up simprocs; 

624 

625 

13953  626 
*** Document preparation *** 
627 

628 
* uses \par instead of \\ for line breaks in theory text. This may 

629 
shift some page breaks in large documents. To get the old behaviour 

630 
use \renewcommand{\isanewline}{\mbox{}\\\mbox{}} in root.tex. 

631 

14731  632 
* minimized dependencies of isabelle.sty and isabellesym.sty on 
13953  633 
other packages 
634 

635 
* \<euro> now needs package babel/greek instead of marvosym (which 

636 
broke \Rightarrow) 

637 

14731  638 
* normal size for \<zero>...\<nine> (uses \mathbf instead of 
13954  639 
textcomp package) 
13953  640 

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

641 

14572  642 

12984  643 
New in Isabelle2002 (March 2002) 
644 
 

11474  645 

11572  646 
*** Document preparation *** 
647 

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

648 
* greatly simplified document preparation setup, including more 
b903d3dabbe2
* greatly simplified document preparation setup, including more
wenzelm
parents:
11817
diff
changeset

649 
graceful interpretation of isatool usedir i/d/D options, and more 
b903d3dabbe2
* greatly simplified document preparation setup, including more
wenzelm
parents:
11817
diff
changeset

650 
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

651 
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

652 
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

653 
"isatool usedir D output HOL Test && isatool document Test/output"; 
11842
b903d3dabbe2
* greatly simplified document preparation setup, including more
wenzelm
parents:
11817
diff
changeset

654 

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

655 
* theory dependency graph may now be incorporated into documents; 
b903d3dabbe2
* greatly simplified document preparation setup, including more
wenzelm
parents:
11817
diff
changeset

656 
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

657 
with \includegraphics of LaTeX; 
b903d3dabbe2
* greatly simplified document preparation setup, including more
wenzelm
parents:
11817
diff
changeset

658 

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

659 
* proper spacing of consecutive markup elements, especially text 
371ce685b0ec
* proper spacing of consecutive markup elements, especially text
wenzelm
parents:
11842
diff
changeset

660 
blocks after section headings; 
371ce685b0ec
* proper spacing of consecutive markup elements, especially text
wenzelm
parents:
11842
diff
changeset

661 

11572  662 
* support bold style (for single symbols only), input syntax is like 
663 
this: "\<^bold>\<alpha>" or "\<^bold>A"; 

664 

11814  665 
* \<bullet> is now output as bold \cdot by default, which looks much 
11572  666 
better in printed text; 
667 

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

668 
* added default LaTeX bindings for \<tturnstile> and \<TTurnstile>; 
deb8cac87063
* added default LaTeX bindings for \<tturnstile> and \<TTurnstile>;
wenzelm
parents:
11702
diff
changeset

669 
note that these symbols are currently unavailable in Proof General / 
12769  670 
XSymbol; new symbols \<zero>, \<one>, ..., \<nine>, and \<euro>; 
12690  671 

672 
* isatool latex no longer depends on changed TEXINPUTS, instead 

673 
isatool document copies the Isabelle style files to the target 

674 
location; 

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

675 

11572  676 

11633  677 
*** Isar *** 
678 

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

679 
* Pure/Provers: improved proof by cases and induction; 
12280  680 
 'case' command admits impromptu naming of parameters (such as 
681 
"case (Suc n)"); 

682 
 'induct' method divinates rule instantiation from the inductive 

683 
claim; no longer requires excessive ?P bindings for proper 

684 
instantiation of cases; 

685 
 'induct' method properly enumerates all possibilities of set/type 

686 
rules; as a consequence facts may be also passed through *type* 

687 
rules without further ado; 

688 
 'induct' method now derives symbolic cases from the *rulified* 

689 
rule (before it used to rulify cases stemming from the internal 

690 
atomized version); this means that the context of a nonatomic 

691 
statement becomes is included in the hypothesis, avoiding the 

692 
slightly cumbersome show "PROP ?case" form; 

693 
 'induct' may now use elimstyle induction rules without chaining 

694 
facts, using ``missing'' premises from the goal state; this allows 

695 
rules stemming from inductive sets to be applied in unstructured 

696 
scripts, while still benefitting from proper handling of nonatomic 

697 
statements; NB: major inductive premises need to be put first, all 

698 
the rest of the goal is passed through the induction; 

699 
 'induct' proper support for mutual induction involving nonatomic 

700 
rule statements (uses the new concept of simultaneous goals, see 

701 
below); 

12853  702 
 append all possible rule selections, but only use the first 
703 
success (no backtracking); 

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

704 
 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

705 
 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

706 
 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

707 
General versions); 
11995
4a622f5fb164
 'induct' may now use elimstyle induction rules without chaining
wenzelm
parents:
11986
diff
changeset

708 
 moved induct/cases attributes to Pure, methods to Provers; 
4a622f5fb164
 'induct' may now use elimstyle induction rules without chaining
wenzelm
parents:
11986
diff
changeset

709 
 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

710 

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

711 
* Pure: support multiple simultaneous goal statements, for example 
04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

712 
"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

713 
metalevel mechanism, this acts as if several individual goals had 
04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

714 
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

715 
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

716 
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

717 
fails: 
04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

718 

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

719 
assume "A & B" then have A and B .. (*".." fails*) 
04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

720 

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

721 
better use "obtain" in situations as above; alternative refer to 
04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

722 
multistep methods like 'auto', 'simp_all', 'blast+' etc.; 
04c98351f9af
Isar: 'induct' proper support for mutual induction involving
wenzelm
parents:
12159
diff
changeset

723 

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

724 
* Pure: proper integration with ``locales''; unlike the original 
12210
2f510d8d8291
* ZF: newstyle theory commands '(co)inductive', '(co)datatype',
wenzelm
parents:
12177
diff
changeset

725 
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

726 
contexts rather than raw logical ones (e.g. we admit to include 
12280  727 
attributes everywhere); operations on locales include merge and 
12964  728 
rename; support for implicit arguments (``structures''); simultaneous 
729 
typeinference over imports and text; see also HOL/ex/Locales.thy for 

730 
some examples; 

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

731 

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

732 
* Pure: the following commands have been ``localized'', supporting a 
4013be8572c5
* Pure: localized 'lemmas', 'theorems', 'declare';
wenzelm
parents:
12690
diff
changeset

733 
target locale specification "(in name)": 'lemma', 'theorem', 
4013be8572c5
* Pure: localized 'lemmas', 'theorems', 'declare';
wenzelm
parents:
12690
diff
changeset

734 
'corollary', 'lemmas', 'theorems', 'declare'; the results will be 
4013be8572c5
* Pure: localized 'lemmas', 'theorems', 'declare';
wenzelm
parents:
12690
diff
changeset

735 
stored both within the locale and at the theory level (exported and 
4013be8572c5
* Pure: localized 'lemmas', 'theorems', 'declare';
wenzelm
parents:
12690
diff
changeset

736 
qualified by the locale name); 
4013be8572c5
* Pure: localized 'lemmas', 'theorems', 'declare';
wenzelm
parents:
12690
diff
changeset

737 

12964  738 
* Pure: theory goals may now be specified in ``long'' form, with 
739 
adhoc contexts consisting of arbitrary locale elements. for example 

740 
``lemma foo: fixes x assumes "A x" shows "B x"'' (local syntax and 

741 
definitions may be given, too); the result is a metalevel rule with 

742 
the context elements being discharged in the obvious way; 

743 

744 
* Pure: new proof command 'using' allows to augment currently used 

745 
facts after a goal statement ('using' is syntactically analogous to 

746 
'apply', but acts on the goal's facts only); this allows chained facts 

747 
to be separated into parts given before and after a claim, as in 

748 
``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

749 

11722  750 
* Pure: renamed "antecedent" case to "rule_context"; 
751 

12964  752 
* Pure: new 'judgment' command records explicit information about the 
753 
objectlogic embedding (used by several tools internally); no longer 

754 
use hardwired "Trueprop"; 

755 

11738  756 
* Pure: added 'corollary' command; 
757 

11722  758 
* Pure: fixed 'token_translation' command; 
759 

11899  760 
* Pure: removed obsolete 'exported' attribute; 
761 

11933  762 
* Pure: dummy pattern "_" in is/let is now automatically lifted over 
763 
bound variables: "ALL x. P x > Q x" (is "ALL x. _ > ?C x") 

11899  764 
supersedes more cumbersome ... (is "ALL x. _ x > ?C x"); 
765 

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

766 
* Pure: method 'atomize' presents local goal premises as objectlevel 
b10f1e8862f4
* Pure: method 'atomize' presents local goal premises as objectlevel
wenzelm
parents:
11937
diff
changeset

767 
statements (atomic metalevel propositions); setup controlled via 
b10f1e8862f4
* Pure: method 'atomize' presents local goal premises as objectlevel
wenzelm
parents:
11937
diff
changeset

768 
rewrite rules declarations of 'atomize' attribute; example 
b10f1e8862f4
* Pure: method 'atomize' presents local goal premises as objectlevel
wenzelm
parents:
11937
diff
changeset

769 
application: 'induct' method with proper rule statements in improper 
b10f1e8862f4
* Pure: method 'atomize' presents local goal premises as objectlevel
wenzelm
parents:
11937
diff
changeset

770 
proof *scripts*; 
b10f1e8862f4
* Pure: method 'atomize' presents local goal premises as objectlevel
wenzelm
parents:
11937
diff
changeset

771 

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

772 
* 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

773 
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

774 
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

775 
especially important for locales); 
4a8558dbb6a0
* Isar/Pure: emulation of instantiation tactics (rule_tac, cut_tac,
wenzelm
parents:
12078
diff
changeset

776 

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

777 
* 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

778 
mode; 
f0f06950820d
* Isar/Pure: "sorry" no longer requires quick_and_dirty in interactive mode;
wenzelm
parents:
12280
diff
changeset

779 

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

780 
* Pure/obtain: the formal conclusion "thesis", being marked as 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

781 
``internal'', may no longer be reference directly in the text; 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

782 
potential INCOMPATIBILITY, may need to use "?thesis" in rare 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

783 
situations; 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

784 

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

785 
* Pure: generic 'sym' attribute which declares a rule both as pure 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

786 
'elim?' and for the 'symmetric' operation; 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

787 

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

788 
* 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

789 
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

790 
discontinued; 
b9635eb8a448
* Isar/Pure: marginal comments ``'' may now occur just anywhere in the text;
wenzelm
parents:
12853
diff
changeset

791 

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

792 
* Pure: new method 'rules' is particularly wellsuited for proof 
f869b6822006
Added two paragraphs on "rules" method and code generator.
berghofe
parents:
12984
diff
changeset

793 
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

794 
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

795 

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

796 
* Pure/Provers/classical: simplified integration with pure rule 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

797 
attributes and methods; the classical "intro?/elim?/dest?" 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

798 
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

799 
includes classically swapped intros; "intro" and "elim" methods no 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

800 
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

801 
AddXIs/AddXEs/AddXDs; all of this has some potential for 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

802 
INCOMPATIBILITY; 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

803 

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

804 
* Provers/classical: attribute 'swapped' produces classical inversions 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

805 
of introduction rules; 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

806 

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

807 
* Provers/simplifier: 'simplified' attribute may refer to explicit 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

808 
rules instead of full simplifier context; 'iff' attribute handles 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

809 
conditional rules; 
11936
fef099613354
* Provers: 'simplified' attribute may refer to explicit rules instead
wenzelm
parents:
11933
diff
changeset

810 

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

811 
* 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

812 

11690  813 
* HOL: 'recdef' now fails on unfinished automated proofs, use 
11633  814 
"(permissive)" option to recover old behavior; 
815 

11933  816 
* HOL: 'inductive' no longer features separate (collective) attributes 
817 
for 'intros' (was found too confusing); 

818 

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

819 
* HOL: properly declared induction rules less_induct and 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

820 
wf_induct_rule; 
9b16f99fd7b9
* Pure/obtain: "thesis" now internal (use ?thesis);
wenzelm
parents:
12364
diff
changeset

821 

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

822 

11474  823 
*** HOL *** 
824 

11702  825 
* HOL: moved over to sane numeral syntax; the new policy is as 
826 
follows: 

827 

828 
 0 and 1 are polymorphic constants, which are defined on any 

829 
numeric type (nat, int, real etc.); 

830 

831 
 2, 3, 4, ... and 1, 2, 3, ... are polymorphic numerals, based 

832 
binary representation internally; 

833 

834 
 type nat has special constructor Suc, and generally prefers Suc 0 

835 
over 1::nat and Suc (Suc 0) over 2::nat; 

836 

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

837 
This change may cause significant problems of INCOMPATIBILITY; here 
108cdda23ab3
* Pure/Provers/classical: simplified integration with pure rule
wenzelm
parents:
12335
diff
changeset

838 
are some hints on converting existing sources: 
11702  839 

840 
 due to the new "num" token, "0" and "1" etc. are now atomic 

841 
entities, so expressions involving "" (unary or binary minus) need 

842 
to be spaced properly; 

843 

844 
 existing occurrences of "1" may need to be constraint "1::nat" or 

845 
even replaced by Suc 0; similar for old "2"; 

846 

847 
 replace "#nnn" by "nnn", and "#nnn" by "nnn"; 

848 

849 
 remove all special provisions on numerals in proofs; 

850 

13042  851 
* HOL: simp rules nat_number expand numerals on nat to Suc/0 
12837  852 
representation (depends on bin_arith_simps in the default context); 
853 

12736  854 
* HOL: symbolic syntax for x^2 (numeral 2); 
855 

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

856 
* 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

857 
"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

858 
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

859 
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

860 
"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

861 

12280  862 
* HOL/record package improvements: 
863 
 new derived operations "fields" to build a partial record section, 

864 
"extend" to promote a fixed record to a record scheme, and 

865 
"truncate" for the reverse; cf. theorems "xxx.defs", which are *not* 

866 
declared as simp by default; 

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

867 
 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

868 
qualified)  potential INCOMPATIBILITY; 
12280  869 
 removed "make_scheme" operations (use "make" with "extend")  
870 
INCOMPATIBILITY; 

11937  871 
 removed "more" class (simply use "term")  INCOMPATIBILITY; 
12253  872 
 provides cases/induct rules for use with corresponding Isar 
873 
methods (for concrete records, record schemes, concrete more 

12280  874 
parts, and schematic more parts  in that order); 
11930  875 
 internal definitions directly based on a lightweight abstract 
876 
theory of product types over typedef rather than datatype; 

877 

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

878 
* 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

879 
specifications; specific support for HOL constructs such as inductive 
f869b6822006
Added two paragraphs on "rules" method and code generator.
berghofe
parents:
12984
diff
changeset

880 
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

881 
via 'generate_code' theory section; 
f869b6822006
Added two paragraphs on "rules" method and code generator.
berghofe
parents:
12984
diff
changeset

882 

11933  883 
* HOL: canonical cases/induct rules for ntuples (n = 3..7); 
884 

13824  885 
* HOL: consolidated and renamed several theories. In particular: 
14731  886 
Ord.thy has been absorbed into HOL.thy 
887 
String.thy has been absorbed into List.thy 

888 

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

889 
* 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

890 
(beware of argument permutation!); 
1d5f5d2427d2
* HOL: concrete setsum syntax "\<Sum>i:A. b" == "setsum (%i. b) A"
wenzelm
parents:
11797
diff
changeset

891 

11657  892 
* HOL: linorder_less_split superseded by linorder_cases; 
893 

12917  894 
* HOL/List: "nodups" renamed to "distinct"; 
12889  895 

11633  896 
* HOL: added "The" definite description operator; move Hilbert's "Eps" 
13824  897 
to peripheral theory "Hilbert_Choice"; some INCOMPATIBILITIES: 
898 
 Ex_def has changed, now need to use some_eq_ex 

11437  899 

11572  900 
* HOL: made split_all_tac safe; EXISTING PROOFS MAY FAIL OR LOOP, so 
901 
in this (rare) case use: 

902 

903 
delSWrapper "split_all_tac" 

904 
addSbefore ("unsafe_split_all_tac", unsafe_split_all_tac) 

905 

906 
* HOL: added safe wrapper "split_conv_tac" to claset; EXISTING PROOFS 

11474  907 
MAY FAIL; 
11361  908 

11572  909 
* HOL: introduced f^n = f o ... o f; warning: due to the limits of 
910 
Isabelle's type classes, ^ on functions and relations has too general 

911 
a domain, namely ('a * 'b) set and 'a => 'b; this means that it may be 

912 
necessary to attach explicit type constraints; 

11307  913 

12917  914 
* HOL/Relation: the prefix name of the infix "O" has been changed from 
915 
"comp" to "rel_comp"; INCOMPATIBILITY: a few theorems have been 

916 
renamed accordingly (eg "compI" > "rel_compI"). 

12489  917 

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

918 
* 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

919 
expressions; 
11474  920 

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

921 
* HOL: bounded abstraction now uses syntax "%" / "\<lambda>" instead 
cbfc53e45476
* HOL: bounded abstraction now uses syntax "%" / "\<lambda>" instead
wenzelm
parents:
12405
diff
changeset

922 
of "lam"  INCOMPATIBILITY; 
11474  923 

11933  924 
* HOL: got rid of some global declarations (potential INCOMPATIBILITY 
925 
for ML tools): const "()" renamed "Product_Type.Unity", type "unit" 

926 
renamed "Product_Type.unit"; 

11611  927 

12564  928 
* HOL: renamed rtrancl_into_rtrancl2 to converse_rtrancl_into_rtrancl 
929 

12924  930 
* HOL: removed obsolete theorem "optionE" (use "option.exhaust", or 
931 
the "cases" method); 

932 

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

933 
* 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

934 
Florian Kammüller); 
14822e4436bf
HOL/IMP and HOLCF/IMP updated and converted (Gerwin Klein);
wenzelm
parents:
12587
diff
changeset

935 

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

936 
* 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

937 
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

938 
some explanations (by Gerwin Klein); 
12597
14822e4436bf
HOL/IMP and HOLCF/IMP updated and converted (Gerwin Klein);
wenzelm
parents:
12587
diff
changeset

939 

12734  940 
* HOLReal: added Complex_Numbers (by Gertrud Bauer); 
941 

12690  942 
* HOLHyperreal is now a logic image; 
943 

11611  944 

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

945 
*** HOLCF *** 
9c3377b133c0
HOLCF: proper rep_datatype lift (see theory Lift); use plain induct_tac
wenzelm
parents:
11995
diff
changeset

946 

12622  947 
* Isar: consts/constdefs supports mixfix syntax for continuous 
948 
operations; 

949 

950 
* Isar: domain package adapted to newstyle theory format, e.g. see 

951 
HOLCF/ex/Dnat.thy; 

952 

953 
* theory Lift: proper use of rep_datatype lift instead of ML hacks  

12280  954 
potential INCOMPATIBILITY; now use plain induct_tac instead of former 
955 
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

956 

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

957 
* HOLCF/IMP: updated and converted to newstyle theory; 
14822e4436bf
HOL/IMP and HOLCF/IMP updated and converted (Gerwin Klein);
wenzelm
parents:
12587
diff
changeset

958 

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

959 

11474  960 
*** ZF *** 
961 

12622  962 
* Isar: proper integration of logicspecific tools and packages, 
963 
including theory commands '(co)inductive', '(co)datatype', 

964 
'rep_datatype', 'inductive_cases', as well as methods 'ind_cases', 

965 
'induct_tac', 'case_tac', and 'typecheck' (with attribute 'TC'); 

966 

967 
* theory Main no longer includes AC; for the Axiom of Choice, base 

968 
your theory on Main_ZFC; 

969 

970 
* the integer library now covers quotients and remainders, with many 

971 
laws relating division to addition, multiplication, etc.; 

12563  972 

12280  973 
* ZF/UNITY: Chandy and Misra's UNITY is now available in ZF, giving a 
974 
typeless version of the formalism; 

975 

13025  976 
* ZF/AC, Coind, IMP, Resid: updated and converted to newstyle theory 
977 
format; 

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

978 

12280  979 
* 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

980 
including theory Multiset for multiset orderings; converted to 
2df381faa787
* ZF/IMP: updated and converted to newstyle theory format;
wenzelm
parents:
12597
diff
changeset

981 
newstyle theory format; 
12177
b1c16d685a99
* ZF: newstyle theory commands 'inductive', 'inductive_cases', and
wenzelm
parents:
12163
diff
changeset

982 

13025  983 
* ZF: many new theorems about lists, ordinals, etc.; 
12850  984 

11474  985 

986 
*** General *** 

987 

12280  988 
* Pure/kernel: metalevel proof terms (by Stefan Berghofer); reference 
989 
variable proof controls level of detail: 0 = no proofs (only oracle 

990 
dependencies), 1 = lemma dependencies, 2 = compact proof terms; see 

991 
also ref manual for further ML interfaces; 

992 

993 
* Pure/axclass: removed obsolete ML interface 

994 
goal_subclass/goal_arity; 

995 

996 
* Pure/syntax: new token syntax "num" for plain numerals (without "#" 

997 
of "xnum"); potential INCOMPATIBILITY, since 0, 1 etc. are now 

998 
separate tokens, so expressions involving minus need to be spaced 

999 
properly; 

1000 

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

1001 
* 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

1002 
rather than "infixl" or "infixr"; 
f0f06950820d
* Isar/Pure: "sorry" no longer requires quick_and_dirty in interactive mode;
wenzelm
parents:
12280
diff
changeset

1003 

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

1004 
* 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

1005 
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

1006 
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

1007 
type variable); 
12280  1008 

1009 
* Pure/syntax: print modes "type_brackets" and "no_type_brackets" 

1010 
control output of nested => (types); the default behavior is 

1011 
"type_brackets"; 

1012 

1013 
* Pure/syntax: builtin parse translation for "_constify" turns valued 

11817  1014 
tokens into AST constants; 
11474  1015 

12280  1016 
* Pure/syntax: prefer later declarations of translations and print 
1017 
translation functions; potential INCOMPATIBILITY: need to reverse 

1018 
multiple declarations for same syntax element constant; 

1019 

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

1020 
* 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

1021 
practice); 
c31b44286a8a
* Pure/show_hyps reset by default (in accordance to existing Isar practice);
wenzelm
parents:
12777
diff
changeset

1022 

12280  1023 
* Provers/classical: renamed addaltern to addafter, addSaltern to 
1024 
addSafter; 

1025 

1026 
* Provers/clasimp: ``iff'' declarations now handle conditional rules 

1027 
as well; 

12253  1028 

12538  1029 
* system: tested support for MacOS X; should be able to get Isabelle + 
1030 
Proof General to work in a plain Terminal after installing Poly/ML 

1031 
(e.g. from the Isabelle distribution area) and GNU bash alone 

1032 
(e.g. from http://www.apple.com); full X11, XEmacs and XSymbol 

1033 
support requires further installations, e.g. from 

1034 
http://fink.sourceforge.net/); 

1035 

12280  1036 
* system: support Poly/ML 4.1.1 (able to manage larger heaps); 
11551  1037 

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

1038 
* 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

1039 
of 40 MB), cf. ML_OPTIONS; 
3a62df7ae926
* system: reduced base memory usage by Poly/ML (approx. 20 MB instead
wenzelm
parents:
12736
diff
changeset

1040 

11633  1041 
* system: Proof General keywords specification is now part of the 
1042 
Isabelle distribution (see etc/isarkeywords.el); 

1043 

12728  1044 
* system: support for persistent Proof General sessions (refrain from 
1045 
outdating all loaded theories on startup); user may create writable 

1046 
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

1047 

11551  1048 
* system: smart selection of Isabelle process versus Isabelle 
11572  1049 
interface, accommodates caseinsensitive file systems (e.g. HFS+); may 
1050 
run both "isabelle" and "Isabelle" even if file names are badly 

1051 
damaged (executable inspects the case of the first letter of its own 

1052 
name); added separate "isabelleprocess" and "isabelleinterface"; 

11551  1053 

12472  1054 
* system: refrain from any attempt at filtering input streams; no 
1055 
longer support ``8bit'' encoding of old isabelle font, instead proper 

1056 
isolatin characters may now be used; the related isatools 

1057 
"symbolinput" and "nonascii" have disappeared as well; 

1058 

1059 
* system: removed old "xterm" interface (the print modes "xterm" and 

1060 
"xterm_color" are still available for direct use in a suitable 

1061 
terminal); 

1062 

11314  1063 

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

1064 

11062  1065 
New in Isabelle992 (February 2001) 
1066 
 

1067 

10224  1068 
*** Overview of INCOMPATIBILITIES *** 
1069 

11241  1070 
* HOL: please note that theories in the Library and elsewhere often use the 
1071 
newstyle (Isar) format; to refer to their theorems in an ML script you must 

12622  1072 
bind them to ML identifers by e.g. val thm_name = thm "thm_name"; 
11241  1073 

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

1074 
* HOL: inductive package no longer splits induction rule aggressively, 
2e3bbac8763b
HOL: inductive package no longer splits induction rule aggressively,
wenzelm
parents:
11016
diff
changeset

1075 
but only as far as specified by the introductions given; the old 
11130  1076 
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

1077 
'split_rule (complete)'; 
2e3bbac8763b
HOL: inductive package no longer splits induction rule aggressively,
wenzelm
parents:
11016
diff
changeset

1078 

10998  1079 
* HOL: induct renamed to lfp_induct, lfp_Tarski to lfp_unfold, 
1080 
gfp_Tarski to gfp_unfold; 

10224  1081 

10288  1082 
* HOL: contrapos, contrapos2 renamed to contrapos_nn, contrapos_pp; 
1083 

10858  1084 
* HOL: infix "dvd" now has priority 50 rather than 70 (because it is a 
1085 
relation); infix "^^" has been renamed "``"; infix "``" has been 

1086 
renamed "`"; "univalent" has been renamed "single_valued"; 

10793  1087 

10998  1088 
* HOL/Real: "rinv" and "hrinv" replaced by overloaded "inverse" 
1089 
operation; 

1090 

10868  1091 
* HOLCF: infix "`" has been renamed "$"; the symbol syntax is \<cdot>; 
10856  1092 

10391  1093 
* Isar: 'obtain' no longer declares "that" fact as simp/intro; 
1094 

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

1095 
* 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

1096 
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

1097 
(which is now passed through the inductive cases); 
58bb50f69497
* Isar/HOL: method 'induct' now handles nonatomic goals; as a
wenzelm
parents:
10391
diff
changeset

1098 

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

1099 
* Document preparation: renamed standard symbols \<ll> to \<lless> and 
0e7cf6f9fa29
* Document preparation: renamed standard symbols \<ll> to \<lless> and
wenzelm
parents:
10966
diff
changeset

1100 
\<gg> to \<ggreater>; 
0e7cf6f9fa29
* Document preparation: renamed standard symbols \<ll> to \<lless> and
wenzelm
parents:
10966
diff
changeset

1101 

10224  1102 

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

1103 
*** Document preparation *** 
87771e2f49fe
* HOL/Library: a collection of generic theories to be used together
wenzelm
parents:
10224
diff
changeset

1104 

10858  1105 
* \isabellestyle{NAME} selects version of Isabelle output (currently 
1106 
available: are "it" for near mathmode beststyle output, "sl" for 

1107 
slanted text style, and "tt" for plain typewriter; if no 

1108 
\isabellestyle command is given, output is according to slanted 

1109 
typewriter); 

1110 

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

1111 
* 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

1112 
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

1113 

10858  1114 
* some more standard symbols; see Appendix A of the system manual for 
11062  1115 
the complete list of symbols defined in isabellesym.sty; 
10858  1116 

10998  1117 
* improved isabelle style files; more abstract symbol implementation 
1118 
(should now use \isamath{...} and \isatext{...} in custom symbol 

1119 
definitions); 

1120 

10634  1121 
* antiquotation @{goals} and @{subgoals} for output of *dynamic* goals 
1122 
state; Note that presentation of goal states does not conform to 

1123 
actual humanreadable proof documents. Please do not include goal 

1124 
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

1125 

11062  1126 
* proper indentation of antiquoted output with proportional LaTeX 
1127 
fonts; 

10862  1128 

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

1129 
* no_document ML operator temporarily disables LaTeX document 
ac5709ac50b9
* no_document ML operator temporarily disables LaTeX document
wenzelm
parents:
11043
diff
changeset

1130 
generation; 
ac5709ac50b9
* no_document ML operator temporarily disables LaTeX document
wenzelm
parents:
11043
diff
changeset

1131 

11062  1132 
* isatool unsymbolize tunes sources for plain ASCII communication; 
1133 

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

1134 

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

1135 
*** Isar *** 
b0ab988a27a9
* HOL: default proof step now includes 'intro_classes';
wenzelm
parents:
10288
diff
changeset

1136 

10547  1137 
* Pure: Isar now suffers initial goal statements to contain unbound 
1138 
schematic variables (this does not conform to actual readable proof 

1139 
documents, due to unpredictable outcome and noncompositional proof 

1140 
checking); users who know what they are doing may use schematic goals 

1141 
for Prologstyle synthesis of proven results; 

1142 

10391  1143 
* Pure: assumption method (an implicit finishing) now handles actual 
1144 
rules as well; 

1145 

1146 
* Pure: improved 'obtain'  moved to Pure, insert "that" into 

1147 
initial goal, declare "that" only as Pure intro (only for single 

1148 
steps); the "that" rule assumption may now be involved in implicit 

1149 
finishing, thus ".." becomes a feasible for trivial obtains; 

1150 

1151 
* Pure: default proof step now includes 'intro_classes'; thus trivial 

1152 
instance proofs may be performed by ".."; 

1153 

1154 
* Pure: ?thesis / ?this / "..." now work for pure metalevel 

1155 
statements as well; 

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

1156 

11097  1157 
* Pure: more robust selection of calculational rules; 
1158 

10858  1159 
* Pure: the builtin notion of 'finished' goal now includes the ==refl 
1160 
rule (as well as the assumption rule); 

1161 

1162 
* Pure: 'thm_deps' command visualizes dependencies of theorems and 

1163 
lemmas, using the graph browser tool; 

1164 

10944  1165 
* Pure: predict failure of "show" in interactive mode; 
1166 

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

1167 
* Pure: 'thms_containing' now takes actual terms as arguments; 
8f8ba41a5e7a
* Pure: 'thms_containing' now takes actual terms as arguments;
wenzelm
parents:
10998
diff
changeset

1168 

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

1169 
* HOL: improved method 'induct'  now handles nonatomic goals 
58bb50f69497
* Isar/HOL: method 'induct' now handles nonatomic goals; as a
wenzelm
parents:
10391
diff
changeset

1170 
(potential INCOMPATIBILITY); tuned error handling; 
58bb50f69497
* Isar/HOL: method 'induct' now handles nonatomic goals; as a
wenzelm
parents:
10391
diff
changeset

1171 

10557  1172 
* HOL: cases and induct rules now provide explicit hints about the 
10547  1173 
number of facts to be consumed (0 for "type" and 1 for "set" rules); 
1174 
any remaining facts are inserted into the goal verbatim; 

1175 

10858  1176 
* HOL: local contexts (aka cases) may now contain term bindings as 
1177 
well; the 'cases' and 'induct' methods new provide a ?case binding for 

1178 
the result to be shown in each case; 

1179 

10770  1180 
* HOL: added 'recdef_tc' command; 
1181 

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

1182 
* isatool convert assists in eliminating legacy ML scripts; 
8f8ba41a5e7a
* Pure: 'thms_containing' now takes actual terms as arguments;
wenzelm
parents:
10998
diff
changeset

1183 

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

1184 

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

1185 
*** HOL *** 
87771e2f49fe
* HOL/Library: a collection of generic theories to be used together
wenzelm
parents:
10224
diff
changeset

1186 

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

1187 
* 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

1188 
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

1189 
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

1190 
HOL/Induct/Multiset, HOL/Induct/Acc (as Accessible_Part), HOL/While 
10337  1191 
(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

1192 

10966  1193 
* HOL/Unix: "Some aspects of Unix filesystem security", a typical 
1194 
modelling and verification task performed in Isabelle/HOL + 

1195 
Isabelle/Isar + Isabelle document preparation (by Markus Wenzel). 

1196 

11094  1197 
* HOL/Algebra: special summation operator SUM no longer exists, it has 
1198 
been replaced by setsum; infix 'assoc' now has priority 50 (like 

1199 
'dvd'); axiom 'one_not_zero' has been moved from axclass 'ring' to 

1200 
'domain', this makes the theory consistent with mathematical 

1201 
literature; 

1202 

10514  1203 
* HOL basics: added overloaded operations "inverse" and "divide" 
10726  1204 
(infix "/"), syntax for generic "abs" operation, generic summation 
11094  1205 
operator \<Sum>; 
10452
abeefb0a79ae
* added overloaded operations "inverse" and "divide" (infix "/");
wenzelm
parents:
10428
diff
changeset

1206 

10391  1207 
* HOL/typedef: simplified package, provide more useful rules (see also 
1208 
HOL/subset.thy); 

1209 

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

1210 
* HOL/datatype: induction rule for arbitrarily branching datatypes is 
6b66a8a530ce
* HOL/datatype: induction rule for arbitrarily branching datatypes is
wenzelm
parents:
10868
diff
changeset

1211 
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

1212 
require atomize_strip_tac to cope with nonatomic premises); 
6b66a8a530ce
* HOL/datatype: induction rule for arbitrarily branching datatypes is
wenzelm
parents:
10868
diff
changeset

1213 

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

1214 
* 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

1215 
to "split_conv" (old name still available for compatibility); 
6b66a8a530ce
* HOL/datatype: induction rule for arbitrarily branching datatypes is
wenzelm
parents:
10868
diff
changeset

1216 

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

1217 
* 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

1218 
rules with string literals); 
6b66a8a530ce
* HOL/datatype: induction rule for arbitrarily branching datatypes is
wenzelm
parents:
10868
diff
changeset

1219 

12245  1220 
* HOLRealHyperreal: this extends HOLReal with the hyperreals 
1221 
and Fleuriot's mechanization of analysis, including the transcendental 

1222 
functions for the reals; 

10756  1223 

11094  1224 
* HOL/Real, HOL/Hyperreal: improved arithmetic simplification; 
10391  1225 

10858  1226 

10474  1227 
*** CTT *** 
1228 

10547  1229 
* CTT: xsymbol support for Pi, Sigma, >, : (membership); note that 
1230 
"lam" is displayed as TWO lambdasymbols 

10474  1231 

10547  1232 
* CTT: theory Main now available, containing everything (that is, Bool 
1233 
and Arith); 

1234 

10474  1235 

10391  1236 
*** General *** 
1237 

10547  1238 
* Pure: the Simplifier has been implemented properly as a derived rule 
1239 
outside of the actual kernel (at last!); the overall performance 

1240 
penalty in practical applications is about 50%, while reliability of 

1241 
the Isabelle inference kernel has been greatly improved; 

1242 

11112  1243 
* print modes "brackets" and "no_brackets" control output of nested => 
1244 
(types) and ==> (props); the default behaviour is "brackets"; 

1245 

10391  1246 
* Provers: fast_tac (and friends) now handle actual objectlogic rules 
1247 
as assumptions as well; 

1248 

11124  1249 
* system: support Poly/ML 4.0; 
1250 

1251 
* system: isatool install handles KDE version 1 or 2; 

1252 

10391  1253 

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

1254 

10103  1255 
New in Isabelle991 (October 2000) 
1256 
 

8015  1257 

10003  1258 
*** Overview of INCOMPATIBILITIES *** 
8014  1259 

8848  1260 
* HOL: simplification of natural numbers is much changed; to partly 
1261 
recover the old behaviour (e.g. to prevent n+n rewriting to #2*n) 

1262 
issue the following ML commands: 

1263 

1264 
Delsimprocs Nat_Numeral_Simprocs.cancel_numerals; 

1265 
Delsimprocs [Nat_Numeral_Simprocs.combine_numerals]; 

8788  1266 

10129  1267 
* HOL: simplification no longer dives into caseexpressions; this is 
1268 
controlled by "t.weak_case_cong" for each datatype t; 

10003  1269 

1270 
* HOL: nat_less_induct renamed to less_induct; 

1271 

1272 
* HOL: systematic renaming of the SOME (Eps) rules, may use isatool 

1273 
fixsome to patch .thy and .ML sources automatically; 

8967  1274 

10003  1275 
select_equality > some_equality 
1276 
select_eq_Ex > some_eq_ex 

1277 
selectI2EX > someI2_ex 

1278 
selectI2 > someI2 

1279 
selectI > someI 

1280 
select1_equality > some1_equality 

1281 
Eps_sym_eq > some_sym_eq_trivial 

1282 
Eps_eq > some_eq_trivial 

1283 

1284 
* HOL: exhaust_tac on datatypes superceded by new generic case_tac; 

1285 

1286 
* HOL: removed obsolete theorem binding expand_if (refer to split_if 

1287 
instead); 

1288 

1289 
* HOL: the recursion equations generated by 'recdef' are now called 

1290 
f.simps instead of f.rules; 

1291 

1292 
* HOL: qed_spec_mp now also handles bounded ALL as well; 

1293 

1294 
* HOL: 0 is now overloaded, so the type constraint ":: nat" may 

1295 
sometimes be needed; 

1296 

1297 
* HOL: the constant for "f``x" is now "image" rather than "op ``"; 

8014  1298 

10065  1299 
* HOL: the constant for "f``x" is now "vimage" rather than "op ``"; 
1300 

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

1301 
* 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

1302 
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

1303 
now "<*lex*>" instead of "**"; 
8705  1304 

10003  1305 
* HOL: theory Sexp is now in HOL/Induct examples (it used to be part 
1306 
of main HOL, but was unused); better use HOL's datatype package; 

9971  1307 

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

1308 
* HOL: removed "symbols" syntax for constant "override" of theory Map; 
d1c2bef01e2f
removed "symbols" syntax for constant "override";
wenzelm
parents:
10129
diff
changeset

1309 
the old syntax may be recovered as follows: 
d1c2bef01e2f
removed "symbols" syntax for constant "override";
wenzelm
parents:
10129
diff
changeset

1310 

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

1311 
syntax (symbols) 
d1c2bef01e2f
removed "symbols" syntax for constant "override";
wenzelm
parents:
10129
diff
changeset

1312 
override :: "('a ~=> 'b) => ('a ~=> 'b) => ('a ~=> 'b)" 
d1c2bef01e2f
removed "symbols" syntax for constant "override";
wenzelm
parents:
10129
diff
changeset

1313 
(infixl "\\<oplus>" 100) 
d1c2bef01e2f
removed "symbols" syntax for constant "override";
wenzelm
parents:
10129
diff
changeset

1314 

8848  1315 
* HOL/Real: "rabs" replaced by overloaded "abs" function; 
1316 

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

1317 
* 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

1318 
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

1319 
internally; 
c0c583ce0b0b
* HOL/ML: even fewer consts are declared as global (see theories Ord,
wenzelm
parents:
8848
diff
changeset

1320 

10003  1321 
* HOL and ZF: syntax for quotienting wrt an equivalence relation 
1322 
changed from A/r to A//r; 

9908  1323 

10003  1324 
* ZF: new treatment of arithmetic (nat & int) may break some old 
1325 
proofs; 

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

1326 

10003  1327 
* Isar: renamed some attributes (RS > THEN, simplify > simplified, 
1328 
rulify > rule_format, elimify > elim_format, ...); 

9542  1329 

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

1330 
* Isar/Provers: intro/elim/dest attributes changed; renamed 
fe05af7ec816
renamed atts: rulify to rule_format, elimify to elim_format;
wenzelm
parents:
9937
diff
changeset

1331 
intro/intro!/intro!! flags to intro!/intro/intro? (in most cases, one 
9937  1332 
should have to change intro!! to intro? only); replaced "delrule" by 
1333 
"rule del"; 

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

1334 

9612  1335 
* Isar/HOL: renamed "intrs" to "intros" in inductive definitions; 
1336 

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

1337 
* Provers: strengthened force_tac by using new first_best_tac; 
9402  1338 

10003  1339 
* LaTeX document preparation: several changes of isabelle.sty (see 
1340 
lib/texinputs); 

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

1341 

8014  1342 

8487  1343 
*** Document preparation *** 
8358
a57d72b5d272
* isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents:
8283
diff
changeset

1344 

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

1345 
* formal comments (text blocks etc.) in newstyle theories may now 
9753  1346 
contain antiquotations of thm/prop/term/typ/text to be presented 
1347 
according to latex print mode; concrete syntax is like this: 

1348 
@{term[show_types] "f(x) = a + x"}; 

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

1349 

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

1350 
* isatool mkdir provides easy setup of Isabelle session directories, 
8518  1351 
including proper document sources; 
8358
a57d72b5d272
* isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents:
8283
diff
changeset

1352 

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

1353 
* generated LaTeX sources are now deleted after successful run 
a57d72b5d272
* isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents:
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diff
changeset

1354 
(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

1355 
of isatool usedir; 
a57d72b5d272
* isatool mkdir provides easy setup of Isabelle session directories,
wenzelm
parents:
8283
diff
changeset

1356 

8566  1357 
* isatool usedir D now lets isatool latex o sty update the Isabelle 
10003  1358 
style files, achieving selfcontained LaTeX sources and simplifying 
1359 
LaTeX debugging; 

8566  1360 

8518  1361 
* 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

1362 

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

1363 
* browser info session directories are now selfcontained (may be put 
9437
93e91040c286
* Isar/Provers: intro/elim/dest attributes: changed
wenzelm
parents:
9402
diff
changeset

1364 
on WWW server seperately); improved graphs of nested sessions; removed 
93e91040c286
* Isar/Provers: intro/elim/dest attributes: changed
wenzelm
parents:
9402
diff
changeset

1365 
graph for 'all sessions'; 
9057
af1ca1acf292
* browser info session directories are now selfcontained (may be put
wenzelm
parents:
9052
diff
changeset

1366 

10003  1367 
* several improvements in isabelle style files; \isabellestyle{it} 
1368 
produces fake math mode output; \isamarkupheader is now \section by 

1369 
default; see lib/texinputs/isabelle.sty etc.; 

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

1370 

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

1371 

8184  1372 
*** Isar *** 
1373 

10003  1374 
* Isar/Pure: local results and corresponding term bindings are now 
1375 
subject to HindleyMilner polymorphism (similar to ML); this 

1376 
accommodates incremental typeinference very nicely; 

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

1377 

10003  1378 
* Isar/Pure: new derived language element 'obtain' supports 
1379 
generalized existence reasoning; 

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

1380 

10003  1381 
* Isar/Pure: new calculational elements 'moreover' and 'ultimately' 
1382 
support accumulation of results, without applying any rules yet; 

1383 
useful to collect intermediate results without explicit name 

1384 
references, and for use with transitivity rules with more than 2 

1385 
premises; 

8184  1386 

10003  1387 
* Isar/Pure: scalable support for caseanalysis type proofs: new 
1388 
'case' language element refers to local contexts symbolically, as 

1389 
produced by certain proof methods; internally, case names are attached 

1390 
to theorems as "tags"; 

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

1391 

10003  1392 
* Isar/Pure: theory command 'hide' removes declarations from 
9330
6861e3b00155
HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents:
9288
diff
changeset

1393 
class/type/const name spaces; 
6861e3b00155
HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents:
9288
diff
changeset

1394 

10003  1395 
* 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

1396 
indicate potential overloading; 
6861e3b00155
HOL: the disjoint sum is now "<+>" instead of "Plus";
wenzelm
parents:
9288
diff
changeset

1397 

10003  1398 
* Isar/Pure: changed syntax of local blocks from {{ }} to { }; 
8621
8ba0f90f6f35
* Isar/Pure: local results and corresponding term bindings are now
wenzelm
parents:
8603
diff
changeset

1399 

10003  1400 
* Isar/Pure: syntax of sorts made 'inner', i.e. have to write 
1401 
"{a,b,c}" instead of {a,b,c}; 

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

1402 

10003  1403 
* Isar/Pure now provides its own version of intro/elim/dest 
1404 
attributes; useful for building new logics, but beware of confusion 

1405 
with the version in Provers/classical; 

9612  1406 

10003  1407 
* Isar/Pure: the local context of (nonatomic) goals is provided via 
1408 
case name 'antecedent'; 

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

1409 