author  wenzelm 
Tue, 09 Oct 2007 00:20:13 +0200  
changeset 24920  2a45e400fdad 
parent 24891  df3581710b9b 
child 24924  2a49fc046dc0 
permissions  rwrr 
5363  1 
Isabelle NEWS  history userrelevant changes 
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============================================== 

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New in Isabelle2007 
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*** General *** 
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* More uniform information about legacy features, notably a 
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warning/error of "Legacy feature: ...", depending on the state of the 

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

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* Theory syntax: the header format ``theory A = B + C:'' has been 
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discontinued in favour of ``theory A imports B C begin''. Use isatool 
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fixheaders to convert existing theory files. INCOMPATIBILITY. 
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* Theory syntax: the old nonIsar theory file format has been 
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discontinued altogether. Note that ML proof scripts may still be used 
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with Isar theories; migration is usually quite simple with the ML 
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function use_legacy_bindings. INCOMPATIBILITY. 
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* Theory syntax: some popular names (e.g. 'class', 'declaration', 
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'fun', 'help', 'if') are now keywords. INCOMPATIBILITY, use double 

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quotes. 

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* Theory loader: be more serious about observing the static theory 
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header specifications (including optional directories), but not the 
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accidental file locations of previously successful loads. The strict 
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update policy of former update_thy is now already performed by 
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use_thy, so the former has been removed; use_thys updates several 
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theories simultaneously, just as 'imports' within a theory header 
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specification, but without merging the results. Potential 
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INCOMPATIBILITY: may need to refine theory headers and commands 
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ROOT.ML which depend on load order. 
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* Theory loader: optional support for contentbased file 
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identification, instead of the traditional scheme of full physical 
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path plus date stamp; configured by the ISABELLE_FILE_IDENT setting 
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(cf. the system manual). The new scheme allows to work with 
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nonfinished theories in persistent session images, such that source 
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files may be moved later on without requiring reloads. 
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* Theory loader: oldstyle ML proof scripts being *attached* to a thy 
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file (with the same base name as the theory) are considered a legacy 
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feature, which will disappear eventually. Even now, the theory loader 
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no longer maintains dependencies on such files. 

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* Syntax: the scope for resolving ambiguities via typeinference is 

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now limited to individual terms, instead of whole simultaneous 

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specifications as before. This greatly reduces the complexity of the 
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syntax module and improves flexibility by separating parsing and 
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typechecking. INCOMPATIBILITY: additional typeconstraints (explicit 
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'fixes' etc.) are required in rare situations. 
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* Legacy goal package: reduced interface to the bare minimum required to keep existing proof scripts running.
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* Legacy goal package: reduced interface to the bare minimum required 
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to keep existing proof scripts running. Most other userlevel 
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functions are now part of the OldGoals structure, which is *not* open 
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by default (consider isatool expandshort before open OldGoals). 
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Removed top_sg, prin, printyp, pprint_term/typ altogether, because 
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these tend to cause confusion about the actual goal (!) context being 
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used here, which is not necessarily the same as the_context(). 
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* Command 'find_theorems': supports "*" wildcard in "name:" 
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criterion; "with_dups" option. Certain ProofGeneral versions might 
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support a specific search form (see ProofGeneral/CHANGES). 
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* The ``prems limit'' option (cf. ProofContext.prems_limit) is now 1 
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by default, which means that "prems" (and also "fixed variables") are 

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suppressed from proof state output. Note that the ProofGeneral 

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settings mechanism allows to change and save options persistently, but 

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

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limit is imposed. 

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* Local theory targets may be specified by nonnested blocks of 
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``context/locale/class ... begin'' followed by ``end''. The body may 
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contain definitions, theorems etc., including any derived mechanism 
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that has been implemented on top of these primitives. This concept 
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generalizes the existing ``theorem (in ...)'' towards more versatility 
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and scalability. 
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* Proof General interface: proper undo of final 'end' command; 
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discontinued Isabelle/classic mode (ML proof scripts). 
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*** Document preparation *** 
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* Added antiquotation @{theory name} which prints the given name, 
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after checking that it refers to a valid ancestor theory in the 

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current context. 

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

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

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arguments may be given on the LHS.) 
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*** Pure *** 
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* Code generator: consts in 'consts_code' Isar commands are now 
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referred to by usual term syntax (including optional type 

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annotations). 

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* Code generator: basic definitions (from 'definition', 'constdefs', 

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or primitive 'instance' definitions) are added automatically to the 

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table of defining equations. Primitive defs are not used as defining 

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equations by default any longer. defining equations are now definitly 

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restricted to meta "==" and object equality "=". 

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* The 'class' package offers a combination of axclass and locale to 

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achieve Haskelllike type classes in Isabelle. See 
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HOL/ex/Classpackage.thy for examples. 
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* Yet another code generator framework allows to generate executable 

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code for ML and Haskell (including Isabelle classes). A short usage 
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sketch: 

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internal compilation: 
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code_gen <list of constants (term syntax)> in SML 
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writing SML code to a file: 
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code_gen <list of constants (term syntax)> in SML <filename> 
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writing OCaml code to a file: 
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code_gen <list of constants (term syntax)> in OCaml <filename> 
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writing Haskell code to a bunch of files: 
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code_gen <list of constants (term syntax)> in Haskell <filename> 
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Reasonable default setup of framework in HOL/Main. 
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Theorem attributs for selecting and transforming function equations theorems: 
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[code fun]: select a theorem as function equation for a specific constant 
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[code fun del]: deselect a theorem as function equation for a specific constant 

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

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

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Userdefined serializations (target in {SML, OCaml, Haskell}): 
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code_const <andlist of constants (term syntax)> 
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{(target) <andlist of const target syntax>}+ 
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code_type <andlist of type constructors> 
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{(target) <andlist of type target syntax>}+ 
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code_instance <andlist of instances> 
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{(target)}+ 
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where instance ::= <type constructor> :: <class> 
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code_class <and_list of classes> 
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{(target) <andlist of class target syntax>}+ 
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where class target syntax ::= <class name> {where {<classop> == <target syntax>}+}? 
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code_instance and code_class only apply to target Haskell. 
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For example usage see HOL/ex/Codegenerator.thy and 
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HOL/ex/Codegenerator_Pretty.thy. A separate tutorial on code 

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generation from Isabelle/HOL theories is available via "isatool doc 

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codegen". 

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* Command 'no_translations' removes translation rules from theory 
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syntax. 

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

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correspondence to type class and instance declarations. 

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

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exotic versions of overloading  at the discretion of the user! 

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

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instantiation that matches an instance against the most general 

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

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

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as c(nat). Overloading is essentially simultaneous structural 

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recursion over such type arguments. Incomplete specification patterns 

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impose global constraints on all occurrences, e.g. c('a * 'a) on the 
19715  179 
LHS means that more general c('a * 'b) will be disallowed on any RHS. 
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Command 'print_theory' outputs the normalized system of recursive 
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equations, see section "definitions". 

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

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

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declare options in ML (e.g. using Attrib.config_int) and then refer to 
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these values using Config.get etc. Users may change options via an 
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associated attribute of the same name. This form of context 
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declaration works particularly well with commands 'declare' or 
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'using', for example ``declare [[foo = 42]]''. Thus it has become 
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very easy to avoid global references, which would not observe Isar 
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toplevel undo/redo and fail to work with multithreading. 
24086  193 

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Various global ML references of Pure and HOL have been turned into 
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configuration options: 
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Unify.search_bound unify_search_bound 
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Unify.trace_bound unify_trace_bound 
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Unify.trace_simp unify_trace_simp 
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Unify.trace_types unify_trace_types 
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Simplifier.simp_depth_limit simp_depth_limit 
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Blast.depth_limit blast_depth_limit 
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DatatypeProp.dtK datatype_distinctness_limit 
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fast_arith_neq_limit fast_arith_neq_limit 
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fast_arith_split_limit fast_arith_split_limit 
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206 

24086  207 
* Named collections of theorems may be easily installed as context 
24800  208 
data using the functor NamedThmsFun (see also 
24086  209 
src/Pure/Tools/named_thms.ML). The user may add or delete facts via 
24110
4ab3084e311c
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210 
attributes; there is also a toplevel print command. This facility is 
4ab3084e311c
tuned config options: eliminated separate attribute "option";
wenzelm
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211 
just a common case of general context data, which is the preferred way 
4ab3084e311c
tuned config options: eliminated separate attribute "option";
wenzelm
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changeset

212 
for anything more complex than just a list of facts in canonical 
4ab3084e311c
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213 
order. 
24086  214 

24032  215 
* Isar: command 'declaration' augments a local theory by generic 
216 
declaration functions written in ML. This enables arbitrary content 

217 
being added to the context, depending on a morphism that tells the 

218 
difference of the original declaration context wrt. the application 

219 
context encountered later on. 

220 

221 
* Isar: proper interfaces for simplification procedures. Command 

222 
'simproc_setup' declares named simprocs (with match patterns, and body 

223 
text in ML). Attribute "simproc" adds/deletes simprocs in the current 

224 
context. ML antiquotation @{simproc name} retrieves named simprocs. 

225 

226 
* Isar: an extra pair of brackets around attribute declarations 

227 
abbreviates a theorem reference involving an internal dummy fact, 

228 
which will be ignored later  only the effect of the attribute on 

229 
the background context will persist. This form of inplace 

230 
declarations is particularly useful with commands like 'declare' and 

231 
'using', for example ``have A using [[simproc a]] by simp''. 

232 

23369
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233 
* Isar: method "assumption" (and implicit closing of subproofs) now 
227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
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234 
takes simple nonatomic goal assumptions into account: after applying 
227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
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235 
an assumption as a rule the resulting subgoals are solved by atomic 
227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
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236 
assumption steps. This is particularly useful to finish 'obtain' 
227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
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237 
goals, such as "!!x. (!!x. P x ==> thesis) ==> P x ==> thesis", 
227c51012cdb
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238 
without referring to the original premise "!!x. P x ==> thesis" in the 
227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
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239 
Isar proof context. POTENTIAL INCOMPATIBILITY: method "assumption" is 
227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
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240 
more permissive. 
227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
wenzelm
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changeset

241 

227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
wenzelm
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242 
* Isar: implicit use of prems from the Isar proof context is 
227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
wenzelm
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243 
considered a legacy feature. Common applications like ``have A .'' 
227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
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244 
may be replaced by ``have A by fact'' or ``note `A`''. In general, 
227c51012cdb
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245 
referencing facts explicitly here improves readability and 
227c51012cdb
* Isar: method "assumption" (implicit closing of subproofs) takes nonatomic goal assumptions into account;
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246 
maintainability of proof texts. 
227c51012cdb
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247 

17865  248 
* Isar: improper proof element 'guess' is like 'obtain', but derives 
249 
the obtained context from the course of reasoning! For example: 

250 

251 
assume "EX x y. A x & B y"  "any previous fact" 

252 
then guess x and y by clarify 

253 

254 
This technique is potentially adventurous, depending on the facts and 

255 
proof tools being involved here. 

256 

18020  257 
* Isar: known facts from the proof context may be specified as literal 
258 
propositions, using ASCII backquote syntax. This works wherever 

259 
named facts used to be allowed so far, in proof commands, proof 

260 
methods, attributes etc. Literal facts are retrieved from the context 

261 
according to unification of type and term parameters. For example, 

262 
provided that "A" and "A ==> B" and "!!x. P x ==> Q x" are known 

263 
theorems in the current context, then these are valid literal facts: 

264 
`A` and `A ==> B` and `!!x. P x ==> Q x" as well as `P a ==> Q a` etc. 

265 

266 
There is also a proof method "fact" which does the same composition 

18044  267 
for explicit goal states, e.g. the following proof texts coincide with 
268 
certain special cases of literal facts: 

18020  269 

270 
have "A" by fact == note `A` 

271 
have "A ==> B" by fact == note `A ==> B` 

272 
have "!!x. P x ==> Q x" by fact == note `!!x. P x ==> Q x` 

273 
have "P a ==> Q a" by fact == note `P a ==> Q a` 

274 

20118
0c1ec587a5a8
* Isar: ":" (colon) is no longer a symbolic identifier character;
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275 
* Isar: ":" (colon) is no longer a symbolic identifier character in 
0c1ec587a5a8
* Isar: ":" (colon) is no longer a symbolic identifier character;
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276 
outer syntax. Thus symbolic identifiers may be used without 
0c1ec587a5a8
* Isar: ":" (colon) is no longer a symbolic identifier character;
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277 
additional white space in declarations like this: ``assume *: A''. 
0c1ec587a5a8
* Isar: ":" (colon) is no longer a symbolic identifier character;
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diff
changeset

278 

20013  279 
* Isar: 'print_facts' prints all local facts of the current context, 
280 
both named and unnamed ones. 

281 

18308  282 
* Isar: 'def' now admits simultaneous definitions, e.g.: 
283 

284 
def x == "t" and y == "u" 

285 

18540  286 
* Isar: added command 'unfolding', which is structurally similar to 
287 
'using', but affects both the goal state and facts by unfolding given 

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

288 
rewrite rules. Thus many occurrences of the 'unfold' method or 
18540  289 
'unfolded' attribute may be replaced by firstclass proof text. 
290 

18815
cb778c0ce1b5
Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
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diff
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291 
* Isar: methods 'unfold' / 'fold', attributes 'unfolded' / 'folded', 
cb778c0ce1b5
Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
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292 
and command 'unfolding' now all support objectlevel equalities 
cb778c0ce1b5
Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
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diff
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293 
(potentially conditional). The underlying notion of rewrite rule is 
cb778c0ce1b5
Pure/Isar: (un)folded, (un)fold, unfolding support
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diff
changeset

294 
analogous to the 'rule_format' attribute, but *not* that of the 
cb778c0ce1b5
Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
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295 
Simplifier (which is usually more generous). 
cb778c0ce1b5
Pure/Isar: (un)folded, (un)fold, unfolding support
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296 

24238  297 
* Isar: the new attribute [rotated n] (default n = 1) rotates the 
298 
premises of a theorem by n. Useful in conjunction with drule. 

299 

19220  300 
* Isar: the goal restriction operator [N] (default N = 1) evaluates a 
301 
method expression within a sandbox consisting of the first N 

19240  302 
subgoals, which need to exist. For example, ``simp_all [3]'' 
303 
simplifies the first three subgoals, while (rule foo, simp_all)[] 

304 
simplifies all new goals that emerge from applying rule foo to the 

305 
originally first one. 

19220  306 

19814
faa698d46686
* Theory syntax: some popular names (e.g. "class", "if") are now keywords.
wenzelm
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307 
* Isar: schematic goals are no longer restricted to higherorder 
faa698d46686
* Theory syntax: some popular names (e.g. "class", "if") are now keywords.
wenzelm
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diff
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308 
patterns; e.g. ``lemma "?P(?x)" by (rule TrueI)'' now works as 
faa698d46686
* Theory syntax: some popular names (e.g. "class", "if") are now keywords.
wenzelm
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diff
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309 
expected. 
faa698d46686
* Theory syntax: some popular names (e.g. "class", "if") are now keywords.
wenzelm
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diff
changeset

310 

18901  311 
* Isar: the conclusion of a long theorem statement is now either 
312 
'shows' (a simultaneous conjunction, as before), or 'obtains' 

313 
(essentially a disjunction of cases with local parameters and 

314 
assumptions). The latter allows to express general elimination rules 

18910  315 
adequately; in this notation common elimination rules look like this: 
18901  316 

317 
lemma exE:  "EX x. P x ==> (!!x. P x ==> thesis) ==> thesis" 

318 
assumes "EX x. P x" 

319 
obtains x where "P x" 

320 

321 
lemma conjE:  "A & B ==> (A ==> B ==> thesis) ==> thesis" 

322 
assumes "A & B" 

323 
obtains A and B 

324 

325 
lemma disjE:  "A  B ==> (A ==> thesis) ==> (B ==> thesis) ==> thesis" 

326 
assumes "A  B" 

327 
obtains 

328 
A 

329 
 B 

330 

18910  331 
The subsequent classical rules even refer to the formal "thesis" 
18901  332 
explicitly: 
333 

334 
lemma classical:  "(~ thesis ==> thesis) ==> thesis" 

335 
obtains "~ thesis" 

336 

18910  337 
lemma Peirce's_Law:  "((thesis ==> something) ==> thesis) ==> thesis" 
338 
obtains "thesis ==> something" 

18901  339 

340 
The actual proof of an 'obtains' statement is analogous to that of the 

18910  341 
Isar proof element 'obtain', only that there may be several cases. 
342 
Optional case names may be specified in parentheses; these will be 

343 
available both in the present proof and as annotations in the 

344 
resulting rule, for later use with the 'cases' method (cf. attribute 

345 
case_names). 

18901  346 

21447
379f130843f7
* Isar: the assumptions of a long theorem statement are available as assms;
wenzelm
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347 
* Isar: the assumptions of a long theorem statement are available as 
379f130843f7
* Isar: the assumptions of a long theorem statement are available as assms;
wenzelm
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changeset

348 
"assms" fact in the proof context. This is more appropriate than the 
379f130843f7
* Isar: the assumptions of a long theorem statement are available as assms;
wenzelm
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diff
changeset

349 
(historical) "prems", which refers to all assumptions of the current 
379f130843f7
* Isar: the assumptions of a long theorem statement are available as assms;
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diff
changeset

350 
context, including those from the target locale, proof body etc. 
379f130843f7
* Isar: the assumptions of a long theorem statement are available as assms;
wenzelm
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diff
changeset

351 

19263  352 
* Isar: 'print_statement' prints theorems from the current theory or 
353 
proof context in long statement form, according to the syntax of a 

354 
toplevel lemma. 

355 

18901  356 
* Isar: 'obtain' takes an optional case name for the local context 
357 
introduction rule (default "that"). 

358 

19587  359 
* Isar: removed obsolete 'concl is' patterns. INCOMPATIBILITY, use 
360 
explicit (is "_ ==> ?foo") in the rare cases where this still happens 

361 
to occur. 

362 

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

363 
* Pure: syntax "CONST name" produces a fully internalized constant 
c8c301eb965a
* Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
parents:
19665
diff
changeset

364 
according to the current context. This is particularly useful for 
c8c301eb965a
* Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
parents:
19665
diff
changeset

365 
syntax translations that should refer to internal constant 
c8c301eb965a
* Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
parents:
19665
diff
changeset

366 
representations independently of name spaces. 
c8c301eb965a
* Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
parents:
19665
diff
changeset

367 

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

368 
* Pure: syntax constant for foo (binder "FOO ") is called "foo_binder" 
45b3a85ee548
* Pure: syntax constant for foo (binder) is called foo_binder;
wenzelm
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21471
diff
changeset

369 
instead of "FOO ". This allows multiple binder declarations to coexist 
45b3a85ee548
* Pure: syntax constant for foo (binder) is called foo_binder;
wenzelm
parents:
21471
diff
changeset

370 
in the same context. INCOMPATIBILITY. 
45b3a85ee548
* Pure: syntax constant for foo (binder) is called foo_binder;
wenzelm
parents:
21471
diff
changeset

371 

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

372 
* Isar/locales: 'notation' provides a robust interface to the 'syntax' 
dbb8decc36bc
'const_syntax' command: allow fixed variables, renamed to 'notation';
wenzelm
parents:
21200
diff
changeset

373 
primitive that also works in a locale context (both for constants and 
dbb8decc36bc
'const_syntax' command: allow fixed variables, renamed to 'notation';
wenzelm
parents:
21200
diff
changeset

374 
fixed variables). Type declaration and internal syntactic 
dbb8decc36bc
'const_syntax' command: allow fixed variables, renamed to 'notation';
wenzelm
parents:
21200
diff
changeset

375 
representation of given constants retrieved from the context. 
19682
c8c301eb965a
* Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
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19665
diff
changeset

376 

19665  377 
* Isar/locales: new derived specification elements 'axiomatization', 
378 
'definition', 'abbreviation', which support typeinference, admit 

19083  379 
objectlevel specifications (equality, equivalence). See also the 
380 
isarref manual. Examples: 

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

381 

19665  382 
axiomatization 
21595  383 
eq (infix "===" 50) where 
384 
eq_refl: "x === x" and eq_subst: "x === y ==> P x ==> P y" 

385 

386 
definition "f x y = x + y + 1" 

387 
definition g where "g x = f x x" 

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

388 

19363  389 
abbreviation 
21595  390 
neq (infix "=!=" 50) where 
19363  391 
"x =!= y == ~ (x === y)" 
19081
085b5badb8de
* Isar/locales: new derived specification elements 'definition', 'abbreviation', 'axiomatization';
wenzelm
parents:
19034
diff
changeset

392 

19083  393 
These specifications may be also used in a locale context. Then the 
394 
constants being introduced depend on certain fixed parameters, and the 

395 
constant name is qualified by the locale base name. An internal 

396 
abbreviation takes care for convenient input and output, making the 

19088  397 
parameters implicit and using the original short name. See also 
19083  398 
HOL/ex/Abstract_NAT.thy for an example of deriving polymorphic 
399 
entities from a monomorphic theory. 

400 

401 
Presently, abbreviations are only available 'in' a target locale, but 

19363  402 
not inherited by general import expressions. Also note that 
403 
'abbreviation' may be used as a typesafe replacement for 'syntax' + 

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

404 
'translations' in common applications. The "no_abbrevs" print mode 
3a55ee2cae70
* Pure/Isar: unified specification syntax admits type inference and dummy patterns;
wenzelm
parents:
24706
diff
changeset

405 
prevents folding of abbreviations in term output. 
19084  406 

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

407 
Concrete syntax is attached to specified constants in internal form, 
c8c301eb965a
* Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
parents:
19665
diff
changeset

408 
independently of name spaces. The parse tree representation is 
21209
dbb8decc36bc
'const_syntax' command: allow fixed variables, renamed to 'notation';
wenzelm
parents:
21200
diff
changeset

409 
slightly different  use 'notation' instead of raw 'syntax', and 
19682
c8c301eb965a
* Pure: syntax 'CONST name' produces a fully internalized constant;
wenzelm
parents:
19665
diff
changeset

410 
'translations' with explicit "CONST" markup to accommodate this. 
19665  411 

24800  412 
* Pure/Isar: unified syntax for newstyle specification mechanisms 
413 
(e.g. 'definition', 'abbreviation', or 'inductive' in HOL) admits 

414 
full type inference and dummy patterns ("_"). For example: 

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

415 

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

416 
definition "K x _ = x" 
3a55ee2cae70
* Pure/Isar: unified specification syntax admits type inference and dummy patterns;
wenzelm
parents:
24706
diff
changeset

417 

24738  418 
inductive conj for A B 
419 
where "A ==> B ==> conj A B" 

420 

21735  421 
* Pure: command 'print_abbrevs' prints all constant abbreviations of 
422 
the current context. Print mode "no_abbrevs" prevents inversion of 

423 
abbreviations on output. 

424 

24800  425 
* Isar/locales: improved parameter handling: use of locales "var" and 
426 
"struct" no longer necessary;  parameter renamings are no longer 

427 
required to be injective. For example, this allows to define 

428 
endomorphisms as locale endom = homom mult mult h. 

19783  429 

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

430 
* Isar/locales: changed the way locales with predicates are defined. 
fb32b43e7f80
Restructured locales with predicates: import is now an interpretation.
ballarin
parents:
19895
diff
changeset

431 
Instead of accumulating the specification, the imported expression is 
22126  432 
now an interpretation. INCOMPATIBILITY: different normal form of 
433 
locale expressions. In particular, in interpretations of locales with 

434 
predicates, goals repesenting already interpreted fragments are not 

435 
removed automatically. Use methods `intro_locales' and 

436 
`unfold_locales'; see below. 

437 

438 
* Isar/locales: new methods `intro_locales' and `unfold_locales' 

439 
provide backward reasoning on locales predicates. The methods are 

440 
aware of interpretations and discharge corresponding goals. 

441 
`intro_locales' is less aggressive then `unfold_locales' and does not 

442 
unfold predicates to assumptions. 

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

443 

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

444 
* Isar/locales: the order in which locale fragments are accumulated 
22126  445 
has changed. This enables to override declarations from fragments due 
446 
to interpretations  for example, unwanted simp rules. 

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

447 

23920  448 
* Isar/locales: interpretation in theories and proof contexts has been 
449 
extended. One may now specify (and prove) equations, which are 

450 
unfolded in interpreted theorems. This is useful for replacing 

451 
defined concepts (constants depending on locale parameters) by 

452 
concepts already existing in the target context. Example: 

453 

454 
interpretation partial_order ["op <= :: [int, int] => bool"] 

455 
where "partial_order.less (op <=) (x::int) y = (x < y)" 

456 

24800  457 
Typically, the constant `partial_order.less' is created by a 
458 
definition specification element in the context of locale 

459 
partial_order. 

460 

24859  461 
* Method "induct": improved internal context management to support 
24800  462 
local fixes and defines onthefly. Thus explicit metalevel 
463 
connectives !! and ==> are rarely required anymore in inductive goals 

464 
(using objectlogic connectives for this purpose has been long 

465 
obsolete anyway). Common proof patterns are explained in 

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

466 
HOL/Induct/Common_Patterns.thy, see also HOL/Isar_examples/Puzzle.thy 
7acbb982fc77
moved induct patterns to HOL/Induct/Common_Patterns.thy;
wenzelm
parents:
24507
diff
changeset

467 
and src/HOL/Lambda for realistic examples. 
7acbb982fc77
moved induct patterns to HOL/Induct/Common_Patterns.thy;
wenzelm
parents:
24507
diff
changeset

468 

24859  469 
* Method "induct": improved handling of simultaneous goals. Instead of 
24606
7acbb982fc77
moved induct patterns to HOL/Induct/Common_Patterns.thy;
wenzelm
parents:
24507
diff
changeset

470 
introducing objectlevel conjunction, the statement is now split into 
7acbb982fc77
moved induct patterns to HOL/Induct/Common_Patterns.thy;
wenzelm
parents:
24507
diff
changeset

471 
several conclusions, while the corresponding symbolic cases are nested 
7acbb982fc77
moved induct patterns to HOL/Induct/Common_Patterns.thy;
wenzelm
parents:
24507
diff
changeset

472 
accordingly. INCOMPATIBILITY, proofs need to be structured explicitly, 
7acbb982fc77
moved induct patterns to HOL/Induct/Common_Patterns.thy;
wenzelm
parents:
24507
diff
changeset

473 
see HOL/Induct/Common_Patterns.thy, for example. 
7acbb982fc77
moved induct patterns to HOL/Induct/Common_Patterns.thy;
wenzelm
parents:
24507
diff
changeset

474 

24859  475 
* Method "induct": mutual induction rules are now specified as a list 
24800  476 
of rule sharing the same induction cases. HOL packages usually provide 
24606
7acbb982fc77
moved induct patterns to HOL/Induct/Common_Patterns.thy;
wenzelm
parents:
24507
diff
changeset

477 
foo_bar.inducts for mutually defined items foo and bar (e.g. inductive 
24859  478 
predicates/sets or datatypes). INCOMPATIBILITY, users need to specify 
479 
mutual induction rules differently, i.e. like this: 

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

480 

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

481 
(induct rule: foo_bar.inducts) 
96260fb11449
* Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents:
18495
diff
changeset

482 
(induct set: foo bar) 
24859  483 
(induct pred: foo bar) 
18506
96260fb11449
* Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents:
18495
diff
changeset

484 
(induct type: foo bar) 
96260fb11449
* Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents:
18495
diff
changeset

485 

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

486 
The ML function ProjectRule.projections turns oldstyle rules into the 
96260fb11449
* Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents:
18495
diff
changeset

487 
new format. 
96260fb11449
* Provers/induct: support simultaneous goals with mutual rules;
wenzelm
parents:
18495
diff
changeset

488 

24859  489 
* Method "coinduct": dual of induction, see 
18399  490 
src/HOL/Library/Coinductive_List.thy for various examples. 
491 

24859  492 
* Method "cases", "induct", "coinduct": the ``(open)'' option is 
493 
considered a legacy feature. 

494 

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

495 
* Attribute "symmetric" produces result with standardized schematic 
dab803075c62
attribute "symmetric": standardized schematic variables;
wenzelm
parents:
20857
diff
changeset

496 
variables (index 0). Potential INCOMPATIBILITY. 
dab803075c62
attribute "symmetric": standardized schematic variables;
wenzelm
parents:
20857
diff
changeset

497 

22126  498 
* Simplifier: by default the simplifier trace only shows top level 
499 
rewrites now. That is, trace_simp_depth_limit is set to 1 by 

500 
default. Thus there is less danger of being flooded by the trace. The 

501 
trace indicates where parts have been suppressed. 

18674  502 

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

503 
* Provers/classical: removed obsolete classical version of elim_format 
ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

504 
attribute; classical elim/dest rules are now treated uniformly when 
ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

505 
manipulating the claset. 
ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

506 

18694  507 
* Provers/classical: stricter checks to ensure that supplied intro, 
508 
dest and elim rules are wellformed; dest and elim rules must have at 

509 
least one premise. 

510 

511 
* Provers/classical: attributes dest/elim/intro take an optional 

18695  512 
weight argument for the rule (just as the Pure versions). Weights are 
18696  513 
ignored by automated tools, but determine the search order of single 
18694  514 
rule steps. 
18557
60a0f9caa0a2
Provers/classical: stricter checks to ensure that supplied intro, dest and
paulson
parents:
18549
diff
changeset

515 

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

516 
* Syntax: input syntax now supports dummy variable binding "%_. b", 
ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

517 
where the body does not mention the bound variable. Note that dummy 
ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

518 
patterns implicitly depend on their context of bounds, which makes 
ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

519 
"{_. _}" match any set comprehension as expected. Potential 
ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

520 
INCOMPATIBILITY  parse translations need to cope with syntactic 
ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

521 
constant "_idtdummy" in the binding position. 
ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

522 

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

523 
* Syntax: removed obsolete syntactic constant "_K" and its associated 
ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

524 
parse translation. INCOMPATIBILITY  use dummy abstraction instead, 
ab3f32f86847
* Provers/classical: removed obsolete classical version of elim_format;
wenzelm
parents:
18507
diff
changeset

525 
for example "A > B" => "Pi A (%_. B)". 
17779  526 

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

527 
* Pure: 'class_deps' command visualizes the subclass relation, using 
ebd0e03c6a9b
* Pure: 'class_deps' command visualizes the subclass relation;
wenzelm
parents:
20503
diff
changeset

528 
the graph browser tool. 
ebd0e03c6a9b
* Pure: 'class_deps' command visualizes the subclass relation;
wenzelm
parents:
20503
diff
changeset

529 

24800  530 
* Pure: 'print_theory' now suppresses certain internal declarations by 
531 
default; use '!' option for full details. 

20620
8b26f58c5646
* Pure: 'print_theory' now suppresses entities with internal name;
wenzelm
parents:
20607
diff
changeset

532 

17865  533 

17806  534 
*** HOL *** 
535 

24804  536 
* New "auto_quickcheck" feature tests outermost goal statements for 
537 
potential counterexamples. Controlled by ML references 

538 
auto_quickcheck (default true) and auto_quickcheck_time_limit (default 

539 
5000 milliseconds). 

540 

24800  541 
* Internal reorganisation of `size' of datatypes: size theorems 
542 
"foo.size" are no longer subsumed by "foo.simps" (but are still 

543 
simplification rules by default!); theorems "prod.size" now named 

544 
"*.size" 

545 

546 
* The transitivity reasoner for partial and linear orders is set up 

547 
for locales "order" and "linorder" generated by the new class package 

548 
(instead of axiomatic type classes used before). Instances of the 

549 
reasoner are available in all contexts importing or interpreting these 

550 
locales. Method "order" invokes the reasoner separately; the reasoner 

551 
is also integrated with the Simplifier as a solver. Diagnostic 

552 
command 'print_orders' shows the available instances of the reasoner 

553 
in the current context. 

554 

555 
* Formulation of theorem "dense" changed slightly due to integration 

556 
with new class dense_linear_order. 

557 

558 
* HOL/Finite_Set: "namespace" locales Lattice, Distrib_lattice, 

559 
Linorder etc. have disappeared; operations defined in terms of 

560 
fold_set now are named Inf_fin, Sup_fin. INCOMPATIBILITY. 

561 

562 
* HOLWord: New extensive library and type for generic, fixed size 

563 
machine words, with arithemtic, bitwise, shifting and rotating 

564 
operations, reflection into int, nat, and bool lists, automation for 

565 
linear arithmetic (by automatic reflection into nat or int), including 

566 
lemmas on overflow and monotonicity. Instantiated to all appropriate 

567 
arithmetic type classes, supporting automatic simplification of 

568 
numerals on all operations. 

24333  569 

570 
* Library/Boolean_Algebra: locales for abstract boolean algebras. 

571 

572 
* Library/Numeral_Type: numbers as types, e.g. TYPE(32). 

573 

23850  574 
* Code generator library theories: 
24800  575 
 Pretty_Int represents HOL integers by big integer literals in target 
23850  576 
languages. 
24800  577 
 Pretty_Char represents HOL characters by character literals in target 
23850  578 
languages. 
24800  579 
 Pretty_Char_chr like Pretty_Char, but also offers treatment of character 
23850  580 
codes; includes Pretty_Int. 
24800  581 
 Executable_Set allows to generate code for finite sets using lists. 
582 
 Executable_Rat implements rational numbers as triples (sign, enumerator, 

23850  583 
denominator). 
24800  584 
 Executable_Real implements a subset of real numbers, namly those 
23850  585 
representable by rational numbers. 
24800  586 
 Efficient_Nat implements natural numbers by integers, which in general will 
23850  587 
result in higher efficency; pattern matching with 0/Suc is eliminated; 
588 
includes Pretty_Int. 

24800  589 
 ML_String provides an additional datatype ml_string; in the HOL default 
23850  590 
setup, strings in HOL are mapped to lists of HOL characters in SML; values 
591 
of type ml_string are mapped to strings in SML. 

24800  592 
 ML_Int provides an additional datatype ml_int which is mapped to to SML 
23850  593 
builtin integers. 
594 

23783
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

595 
* New package for inductive predicates 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

596 

e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

597 
An nary predicate p with m parameters z_1, ..., z_m can now be defined via 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

598 

e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

599 
inductive 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

600 
p :: "U_1 => ... => U_m => T_1 => ... => T_n => bool" 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

601 
for z_1 :: U_1 and ... and z_n :: U_m 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

602 
where 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

603 
rule_1: "... ==> p z_1 ... z_m t_1_1 ... t_1_n" 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

604 
 ... 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

605 

24800  606 
with full support for typeinference, rather than 
23783
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

607 

e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

608 
consts s :: "U_1 => ... => U_m => (T_1 * ... * T_n) set" 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

609 

e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

610 
abbreviation p :: "U_1 => ... => U_m => T_1 => ... => T_n => bool" 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

611 
where "p z_1 ... z_m x_1 ... x_n == (x_1, ..., x_n) : s z_1 ... z_m" 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

612 

e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

613 
inductive "s z_1 ... z_m" 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

614 
intros 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

615 
rule_1: "... ==> (t_1_1, ..., t_1_n) : s z_1 ... z_m" 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

616 
... 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

617 

e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

618 
For backward compatibility, there is a wrapper allowing inductive 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

619 
sets to be defined with the new package via 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

620 

e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

621 
inductive_set 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

622 
s :: "U_1 => ... => U_m => (T_1 * ... * T_n) set" 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

623 
for z_1 :: U_1 and ... and z_n :: U_m 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

624 
where 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

625 
rule_1: "... ==> (t_1_1, ..., t_1_n) : s z_1 ... z_m" 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

626 
 ... 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

627 

e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

628 
or 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

629 

e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

630 
inductive_set 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

631 
s :: "U_1 => ... => U_m => (T_1 * ... * T_n) set" 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

632 
and p :: "U_1 => ... => U_m => T_1 => ... => T_n => bool" 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

633 
for z_1 :: U_1 and ... and z_n :: U_m 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

634 
where 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

635 
"p z_1 ... z_m x_1 ... x_n == (x_1, ..., x_n) : s z_1 ... z_m" 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

636 
 rule_1: "... ==> p z_1 ... z_m t_1_1 ... t_1_n" 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

637 
 ... 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

638 

e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

639 
if the additional syntax "p ..." is required. 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

640 

24800  641 
Numerous examples can be found in the subdirectories HOL/Auth, HOL/Bali, 
642 
HOL/Induct, and HOL/MicroJava. 

23783
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

643 

e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

644 
INCOMPATIBILITIES: 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

645 

e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

646 
 Since declaration and definition of inductive sets or predicates 
24800  647 
is no longer separated, abbreviations involving the newly 
648 
introduced sets or predicates must be specified together with the 

649 
introduction rules after the 'where' keyword (see above), rather 

650 
than before the actual inductive definition. 

651 

652 
 The variables in induction and elimination rules are now 

653 
quantified in the order of their occurrence in the introduction 

654 
rules, rather than in alphabetical order. Since this may break 

655 
some proofs, these proofs either have to be repaired, e.g. by 

656 
reordering the variables a_i_1 ... a_i_{k_i} in Isar 'case' 

657 
statements of the form 

23783
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

658 

e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

659 
case (rule_i a_i_1 ... a_i_{k_i}) 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

660 

e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

661 
or the old order of quantification has to be restored by explicitly adding 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

662 
metalevel quantifiers in the introduction rules, i.e. 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

663 

e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

664 
 rule_i: "!!a_i_1 ... a_i_{k_i}. ... ==> p z_1 ... z_m t_i_1 ... t_i_n" 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

665 

e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

666 
 The format of the elimination rules is now 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

667 

e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

668 
p z_1 ... z_m x_1 ... x_n ==> 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

669 
(!!a_1_1 ... a_1_{k_1}. x_1 = t_1_1 ==> ... ==> x_n = t_1_n ==> ... ==> P) 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

670 
==> ... ==> P 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

671 

e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

672 
for predicates and 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

673 

e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

674 
(x_1, ..., x_n) : s z_1 ... z_m ==> 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

675 
(!!a_1_1 ... a_1_{k_1}. x_1 = t_1_1 ==> ... ==> x_n = t_1_n ==> ... ==> P) 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

676 
==> ... ==> P 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

677 

e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

678 
for sets rather than 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

679 

e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

680 
x : s z_1 ... z_m ==> 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

681 
(!!a_1_1 ... a_1_{k_1}. x = (t_1_1, ..., t_1_n) ==> ... ==> P) 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

682 
==> ... ==> P 
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

683 

24800  684 
This may require terms in goals to be expanded to ntuples 
685 
(e.g. using case_tac or simplification with the split_paired_all 

686 
rule) before the above elimination rule is applicable. 

687 

688 
 The elimination or case analysis rules for (mutually) inductive 

689 
sets or predicates are now called "p_1.cases" ... "p_k.cases". The 

690 
list of rules "p_1_..._p_k.elims" is no longer available. 

23783
e4d514f81d95
Added entry for new inductive definition package.
berghofe
parents:
23565
diff
changeset

691 

23562  692 
* Method "metis" proves goals by applying the Metis generalpurpose 
693 
resolution prover. Examples are in the directory MetisExamples. See 

694 
also http://gilith.com/software/metis/ 

24800  695 

696 
WARNING: the Isabelle/HOLMetis integration does not yet work properly 

697 
with multithreading. 

23449  698 

23562  699 
* Command 'sledgehammer' invokes external automatic theorem provers as 
700 
background processes. It generates calls to the "metis" method if 

701 
successful. These can be pasted into the proof. Users do not have to 

702 
wait for the automatic provers to return. 

23449  703 

24800  704 
* Caseexpressions allow arbitrary constructorpatterns (including 
705 
"_") and take their order into account, like in functional 

706 
programming. Internally, this is translated into nested 

707 
caseexpressions; missing cases are added and mapped to the predefined 

708 
constant "undefined". In complicated cases printing may no longer show 

709 
the original input but the internal form. Lambdaabstractions allow 

710 
the same form of pattern matching: "% pat1 => e1  ..." is an 

711 
abbreviation for "%x. case x of pat1 => e1  ..." where x is a new 

712 
variable. 

23564  713 

23468  714 
* IntDef: The constant "int :: nat => int" has been removed; now "int" 
24800  715 
is an abbreviation for "of_nat :: nat => int". The simplification 
716 
rules for "of_nat" have been changed to work like "int" did 

717 
previously. Potential INCOMPATIBILITY: 

23468  718 
 "of_nat (Suc m)" simplifies to "1 + of_nat m" instead of "of_nat m + 1" 
719 
 of_nat_diff and of_nat_mult are no longer default simp rules 

23377  720 

23295
86e225406859
Method "algebra" solves polynomial equations over (semi)rings
chaieb
parents:
23251
diff
changeset

721 
* Method "algebra" solves polynomial equations over (semi)rings using 
24800  722 
Groebner bases. The (semi)ring structure is defined by locales and the 
723 
tool setup depends on that generic context. Installing the method for 

724 
a specific type involves instantiating the locale and possibly adding 

725 
declarations for computation on the coefficients. The method is 

726 
already instantiated for natural numbers and for the axiomatic class 

727 
of idoms with numerals. See also the paper by Chaieb and Wenzel at 

728 
CALCULEMUS 2007 for the general principles underlying this 

729 
architecture of contextaware prooftools. 

730 

731 
* Former constant "List.op @" now named "List.append". Use ML 

732 
antiquotations @{const_name List.append} or @{term " ... @ ... "} to 

733 
circumvent possible incompatibilities when working on ML level. 

734 

735 
* Some renaming of class constants due to canonical name prefixing in 

736 
the new 'class' package: 

22997  737 

738 
HOL.abs ~> HOL.minus_class.abs 

739 
HOL.divide ~> HOL.divide_class.divide 

740 
Nat.power ~> Nat.power_class.power 

741 
Nat.size ~> Nat.size_class.size 

742 
Numeral.number_of ~> Numeral.number_class.number_of 

23129  743 
FixedPoint.Inf ~> FixedPoint.complete_lattice_class.Inf 
24342  744 
FixedPoint.Sup ~> FixedPoint.complete_lattice_class.Sup 
23129  745 
Orderings.min ~> Orderings.ord_class.min 
746 
Orderings.max ~> Orderings.ord_class.max 

22997  747 

24800  748 
* New class "default" with associated constant "default". 
749 

750 
* New constant "undefined" with axiom "undefined x = undefined". 

751 

23564  752 
* primrec: missing cases mapped to "undefined" instead of "arbitrary" 
22845  753 

24800  754 
* New function listsum :: 'a list => 'a for arbitrary monoids. 
755 
Special syntax: "SUM x < xs. f x" (and latex variants) 

756 

757 
* New syntax for Haskelllike list comprehension (input only), eg. 

758 
[(x,y). x < xs, y < ys, x ~= y], see also HOL/List.thy. 

759 

760 
* The special syntax for function "filter" has changed from [x : 

761 
xs. P] to [x < xs. P] to avoid an ambiguity caused by list 

762 
comprehension syntax, and for uniformity. INCOMPATIBILITY. 

763 

764 
* [a..b] is now defined for arbitrary linear orders. It used to be 

765 
defined on nat only, as an abbreviation for [a..<Suc b] 

766 
INCOMPATIBILITY. 

767 

768 
* Renamed lemma "set_take_whileD" to "set_takeWhileD". 

769 

770 
* New functions "sorted" and "sort" in HOL/List.thy. 

771 

772 
* Function "sgn" is now overloaded and available on int, real, complex 

773 
(and other numeric types), using class "sgn". Two possible defs of 

774 
sgn are given as equational assumptions in the classes sgn_if and 

775 
sgn_div_norm; ordered_idom now also inherits from sgn_if. 

776 
INCOMPATIBILITY. 

777 

778 
* New lemma collection field_simps (an extension of ring_simps) for 

779 
manipulating (in)equations involving division. Multiplies with all 

780 
denominators that can be proved to be nonzero (in equations) or 

781 
positive/negative (in inequations). 

23480  782 

783 
* Lemma collections ring_eq_simps, group_eq_simps and ring_distrib 

24800  784 
have been improved and renamed to ring_simps, group_simps and 
785 
ring_distribs. Removed lemmas field_xyz in theory Ring_and_Field 

786 
because they were subsumed by lemmas xyz. INCOMPATIBILITY. 

787 

788 
* Library/Pretty_Int.thy: maps HOL numerals on target language integer 

789 
literals when generating code. 

790 

791 
* Library/Pretty_Char.thy: maps HOL characters on target language 

792 
character literals when generating code. 

793 

794 
* Library/Commutative_Ring.thy: switched from recdef to function 

795 
package; constants add, mul, pow now curried. Infix syntax for 

796 
algebraic operations. 

22735  797 

22450  798 
* Some steps towards more uniform lattice theory development in HOL. 
22422
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

799 

ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

800 
constants "meet" and "join" now named "inf" and "sup" 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

801 
constant "Meet" now named "Inf" 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

802 

22450  803 
classes "meet_semilorder" and "join_semilorder" now named 
804 
"lower_semilattice" and "upper_semilattice" 

805 
class "lorder" now named "lattice" 

806 
class "comp_lat" now named "complete_lattice" 

807 

808 
Instantiation of lattice classes allows explicit definitions 

24342  809 
for "inf" and "sup" operations (or "Inf" and "Sup" for complete lattices). 
22450  810 

23129  811 
INCOMPATIBILITY. Theorem renames: 
22450  812 

22422
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

813 
meet_left_le ~> inf_le1 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

814 
meet_right_le ~> inf_le2 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

815 
join_left_le ~> sup_ge1 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

816 
join_right_le ~> sup_ge2 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

817 
meet_join_le ~> inf_sup_ord 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

818 
le_meetI ~> le_infI 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

819 
join_leI ~> le_supI 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

820 
le_meet ~> le_inf_iff 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

821 
le_join ~> ge_sup_conv 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

822 
meet_idempotent ~> inf_idem 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

823 
join_idempotent ~> sup_idem 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

824 
meet_comm ~> inf_commute 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

825 
join_comm ~> sup_commute 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

826 
meet_leI1 ~> le_infI1 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

827 
meet_leI2 ~> le_infI2 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

828 
le_joinI1 ~> le_supI1 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

829 
le_joinI2 ~> le_supI2 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

830 
meet_assoc ~> inf_assoc 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

831 
join_assoc ~> sup_assoc 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

832 
meet_left_comm ~> inf_left_commute 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

833 
meet_left_idempotent ~> inf_left_idem 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

834 
join_left_comm ~> sup_left_commute 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

835 
join_left_idempotent ~> sup_left_idem 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

836 
meet_aci ~> inf_aci 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

837 
join_aci ~> sup_aci 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

838 
le_def_meet ~> le_iff_inf 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

839 
le_def_join ~> le_iff_sup 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

840 
join_absorp2 ~> sup_absorb2 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

841 
join_absorp1 ~> sup_absorb1 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

842 
meet_absorp1 ~> inf_absorb1 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

843 
meet_absorp2 ~> inf_absorb2 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

844 
meet_join_absorp ~> inf_sup_absorb 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

845 
join_meet_absorp ~> sup_inf_absorb 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

846 
distrib_join_le ~> distrib_sup_le 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

847 
distrib_meet_le ~> distrib_inf_le 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

848 

ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

849 
add_meet_distrib_left ~> add_inf_distrib_left 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

850 
add_join_distrib_left ~> add_sup_distrib_left 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

851 
is_join_neg_meet ~> is_join_neg_inf 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

852 
is_meet_neg_join ~> is_meet_neg_sup 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

853 
add_meet_distrib_right ~> add_inf_distrib_right 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

854 
add_join_distrib_right ~> add_sup_distrib_right 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

855 
add_meet_join_distribs ~> add_sup_inf_distribs 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

856 
join_eq_neg_meet ~> sup_eq_neg_inf 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

857 
meet_eq_neg_join ~> inf_eq_neg_sup 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

858 
add_eq_meet_join ~> add_eq_inf_sup 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

859 
meet_0_imp_0 ~> inf_0_imp_0 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

860 
join_0_imp_0 ~> sup_0_imp_0 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

861 
meet_0_eq_0 ~> inf_0_eq_0 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

862 
join_0_eq_0 ~> sup_0_eq_0 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

863 
neg_meet_eq_join ~> neg_inf_eq_sup 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

864 
neg_join_eq_meet ~> neg_sup_eq_inf 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

865 
join_eq_if ~> sup_eq_if 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

866 

ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

867 
mono_meet ~> mono_inf 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

868 
mono_join ~> mono_sup 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

869 
meet_bool_eq ~> inf_bool_eq 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

870 
join_bool_eq ~> sup_bool_eq 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

871 
meet_fun_eq ~> inf_fun_eq 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

872 
join_fun_eq ~> sup_fun_eq 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

873 
meet_set_eq ~> inf_set_eq 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

874 
join_set_eq ~> sup_set_eq 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

875 
meet1_iff ~> inf1_iff 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

876 
meet2_iff ~> inf2_iff 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

877 
meet1I ~> inf1I 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

878 
meet2I ~> inf2I 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

879 
meet1D1 ~> inf1D1 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

880 
meet2D1 ~> inf2D1 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

881 
meet1D2 ~> inf1D2 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

882 
meet2D2 ~> inf2D2 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

883 
meet1E ~> inf1E 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

884 
meet2E ~> inf2E 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

885 
join1_iff ~> sup1_iff 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

886 
join2_iff ~> sup2_iff 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

887 
join1I1 ~> sup1I1 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

888 
join2I1 ~> sup2I1 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

889 
join1I1 ~> sup1I1 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

890 
join2I2 ~> sup1I2 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

891 
join1CI ~> sup1CI 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

892 
join2CI ~> sup2CI 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

893 
join1E ~> sup1E 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

894 
join2E ~> sup2E 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

895 

ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

896 
is_meet_Meet ~> is_meet_Inf 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

897 
Meet_bool_def ~> Inf_bool_def 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

898 
Meet_fun_def ~> Inf_fun_def 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

899 
Meet_greatest ~> Inf_greatest 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

900 
Meet_lower ~> Inf_lower 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

901 
Meet_set_def ~> Inf_set_def 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

902 

24342  903 
Sup_def ~> Sup_Inf 
904 
Sup_bool_eq ~> Sup_bool_def 

905 
Sup_fun_eq ~> Sup_fun_def 

906 
Sup_set_eq ~> Sup_set_def 

907 

22422
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

908 
listsp_meetI ~> listsp_infI 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

909 
listsp_meet_eq ~> listsp_inf_eq 
ee19cdb07528
stepping towards uniform lattice theory development in HOL
haftmann
parents:
22384
diff
changeset

910 

22450  911 
meet_min ~> inf_min 
912 
join_max ~> sup_max 

913 

24800  914 
* Renamed classes "order" and "linorder": facts "refl", "trans" and 
915 
"cases" to "order_refl", "order_trans" and "linorder_cases", to avoid 

916 
clashes with HOL "refl" and "trans". INCOMPATIBILITY. 

917 

918 
* Classes "order" and "linorder": potential INCOMPATIBILITY due to 

919 
changed order of proof goals instance proofs. 

920 

921 
* Dropped redundant lemma def_imp_eq in favor of meta_eq_to_obj_eq. 

22218  922 
INCOMPATIBILITY. 
923 

24800  924 
* Dropped redundant lemma if_def2 in favor of if_bool_eq_conj. 
22218  925 
INCOMPATIBILITY. 
926 

22126  927 
* Added syntactic class "size"; overloaded constant "size" now has 
928 
type "'a::size ==> bool" 

929 

930 
* Renamed constants "Divides.op div", "Divides.op mod" and "Divides.op 

24800  931 
dvd" to "Divides.div_class.div", "Divides.div_class.mod" and 
932 
"Divides.dvd". INCOMPATIBILITY. 

933 

934 
* Method "lexicographic_order" automatically synthesizes termination 

935 
relations as lexicographic combinations of size measures  'function' 

936 
package. 

22126  937 

938 
* HOL/records: generalised fieldupdate to take a function on the 

939 
field rather than the new value: r(A := x) is translated to A_update 

940 
(K x) r The Kcombinator that is internally used is called K_record. 

21226
a607ae87ee81
fieldupdate in records is generalised to take a function on the field
schirmer
parents:
21215
diff
changeset

941 
INCOMPATIBILITY: Usage of the plain update functions has to be 
a607ae87ee81
fieldupdate in records is generalised to take a function on the field
schirmer
parents:
21215
diff
changeset

942 
adapted. 
a607ae87ee81
fieldupdate in records is generalised to take a function on the field
schirmer
parents:
21215
diff
changeset

943 

24800  944 
* Class "semiring_0" now contains annihilation axioms x * 0 = 0 and 0 
945 
* x = 0, which are required for a semiring. Richer structures do not 

946 
inherit from semiring_0 anymore, because this property is a theorem 

947 
there, not an axiom. INCOMPATIBILITY: In instances of semiring_0, 

948 
there is more to prove, but this is mostly trivial. 

949 

950 
* Class "recpower" is generalized to arbitrary monoids, not just 

951 
commutative semirings. INCOMPATIBILITY: may need to incorporate 

952 
commutativity or a semiring properties additionally. 

953 

954 
* Unified locale "partial_order" with class definition (cf. theory 

955 
Orderings), added parameter "less". INCOMPATIBILITY. 

21215
7c9337a0e30a
made locale partial_order compatible with axclass order
haftmann
parents:
21209
diff
changeset

956 

21099  957 
* Constant "List.list_all2" in List.thy now uses authentic syntax. 
24800  958 
INCOMPATIBILITY: translations containing list_all2 may go wrong, 
959 
better use 'abbreviation'. 

960 

961 
* Renamed constant "List.op mem" to "List.member". INCOMPATIBILITY. 

962 

963 
* Renamed constants "0" to "HOL.zero_class.zero" and "1" to 

964 
"HOL.one_class.one". INCOMPATIBILITY. 

965 

966 
* Added class "HOL.eq", allowing for code generation with polymorphic 

967 
equality. 

22126  968 

969 
* Numeral syntax: type 'bin' which was a mere type copy of 'int' has 

24800  970 
been abandoned in favour of plain 'int'. INCOMPATIBILITY  
22126  971 
significant changes for setting up numeral syntax for types: 
24800  972 
 New constants Numeral.pred and Numeral.succ instead 
20485  973 
of former Numeral.bin_pred and Numeral.bin_succ. 
974 
 Use integer operations instead of bin_add, bin_mult and so on. 

975 
 Numeral simplification theorems named Numeral.numeral_simps instead of Bin_simps. 

976 
 ML structure Bin_Simprocs now named Int_Numeral_Base_Simprocs. 

977 

978 
See HOL/Integ/IntArith.thy for an example setup. 

979 

22126  980 
* New top level command 'normal_form' computes the normal form of a 
24800  981 
term that may contain free variables. For example ``normal_form 
22126  982 
"rev[a,b,c]"'' produces ``[b,c,a]'' (without proof). This command is 
983 
suitable for heavyduty computations because the functions are 

984 
compiled to ML first. 

19895  985 

17996  986 
* Alternative iff syntax "A <> B" for equality on bool (with priority 
987 
25 like >); output depends on the "iff" print_mode, the default is 

988 
"A = B" (with priority 50). 

989 

19279  990 
* Renamed constants in HOL.thy and Orderings.thy: 
22997  991 
op + ~> HOL.plus_class.plus 
992 
op  ~> HOL.minus_class.minus 

993 
uminus ~> HOL.minus_class.uminus 

23881  994 
abs ~> HOL.abs_class.abs 
22997  995 
op * ~> HOL.times_class.times 
23881  996 
op < ~> HOL.ord_class.less 
997 
op <= ~> HOL.ord_class.less_eq 

19233
77ca20b0ed77
renamed HOL +  * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents:
19226
diff
changeset

998 

77ca20b0ed77
renamed HOL +  * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents:
19226
diff
changeset

999 
Adaptions may be required in the following cases: 
77ca20b0ed77
renamed HOL +  * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents:
19226
diff
changeset

1000 

24800  1001 
a) Userdefined constants using any of the names "plus", "minus", 
1002 
"times", "less" or "less_eq". The standard syntax translations for 

1003 
"+", "" and "*" may go wrong. INCOMPATIBILITY: use more specific 

1004 
names. 

19233
77ca20b0ed77
renamed HOL +  * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents:
19226
diff
changeset

1005 

19277  1006 
b) Variables named "plus", "minus", "times", "less", "less_eq" 
19233
77ca20b0ed77
renamed HOL +  * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents:
19226
diff
changeset

1007 
INCOMPATIBILITY: use more specific names. 
77ca20b0ed77
renamed HOL +  * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents:
19226
diff
changeset

1008 

19377  1009 
c) Permutative equations (e.g. "a + b = b + a") 
1010 
Since the change of names also changes the order of terms, permutative 

24800  1011 
rewrite rules may get applied in a different order. Experience shows 
1012 
that this is rarely the case (only two adaptions in the whole Isabelle 

1013 
distribution). INCOMPATIBILITY: rewrite proofs 

19233
77ca20b0ed77
renamed HOL +  * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents:
19226
diff
changeset

1014 

77ca20b0ed77
renamed HOL +  * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents:
19226
diff
changeset

1015 
d) ML code directly refering to constant names 
24800  1016 
This in general only affects handwritten proof tactics, simprocs and 
1017 
so on. INCOMPATIBILITY: grep your sourcecode and replace names. 

1018 
Consider using @{const_name} antiquotation. 

19233
77ca20b0ed77
renamed HOL +  * etc. to HOL.plus HOL.minus HOL.times etc.
haftmann
parents:
19226
diff
changeset

1019 

21265  1020 
* Relations less (<) and less_eq (<=) are also available on type bool. 
1021 
Modified syntax to disallow nesting without explicit parentheses, 

24800  1022 
e.g. "(x < y) < z" or "x < (y < z)", but NOT "x < y < z". Potential 
1023 
INCOMPATIBILITY. 

21265  1024 

18674  1025 
* "LEAST x:A. P" expands to "LEAST x. x:A & P" (input only). 
1026 

20716
a6686a8e1b68
Changed precedence of "op O" (relation composition) from 60 to 75.
krauss
parents:
20712
diff
changeset

1027 
* Relation composition operator "op O" now has precedence 75 and binds 
a6686a8e1b68
Changed precedence of "op O" (relation composition) from 60 to 75.
krauss
parents:
20712
diff
changeset

1028 
stronger than union and intersection. INCOMPATIBILITY. 
a6686a8e1b68
Changed precedence of "op O" (relation composition) from 60 to 75.
krauss
parents:
20712
diff
changeset

1029 

22126  1030 
* The old set interval syntax "{m..n(}" (and relatives) has been 
1031 
removed. Use "{m..<n}" (and relatives) instead. 

19377  1032 

17865  1033 
* In the context of the assumption "~(s = t)" the Simplifier rewrites 
24800  1034 
"t = s" to False (by simproc "neq"). INCOMPATIBILITY, consider using 
1035 
``declare [[simproc del: neq]]''. 

1036 

1037 
* Simplifier: "m dvd n" where m and n are numbers is evaluated to 

1038 
True/False. 

1039 

1040 
* Theorem Cons_eq_map_conv no longer declared as "simp". 

19211  1041 

19279  1042 
* Theorem setsum_mult renamed to setsum_right_distrib. 
1043 

19211  1044 
* Prefer ex1I over ex_ex1I in singlestep reasoning, e.g. by the 
22126  1045 
``rule'' method. 
1046 

24800  1047 
* Reimplemented methods "sat" and "satx", with several improvements: 
1048 
goals no longer need to be stated as "<prems> ==> False", equivalences 

1049 
(i.e. "=" on type bool) are handled, variable names of the form 

1050 
"lit_<n>" are no longer reserved, significant speedup. 

1051 

1052 
* Methods "sat" and "satx" can now replay MiniSat proof traces. 

22126  1053 
zChaff is still supported as well. 
1054 

1055 
* 'inductive' and 'datatype': provide projections of mutual rules, 

1056 
bundled as foo_bar.inducts; 

1057 

1058 
* Library: moved theories Parity, GCD, Binomial, Infinite_Set to 

1059 
Library. 

21256  1060 

1061 
* Library: moved theory Accessible_Part to main HOL. 

19572
a4b3176f19dd
* Library: theory Accessible_Part has been move to main HOL.
wenzelm
parents:
19508
diff
changeset

1062 

18446  1063 
* Library: added theory Coinductive_List of potentially infinite lists 
1064 
as greatest fixedpoint. 

18399  1065 

19254  1066 
* Library: added theory AssocList which implements (finite) maps as 
19252  1067 
association lists. 
17809
195045659c06
Tactics sat and satx reimplemented, several improvements
webertj
parents:
17806
diff
changeset

1068 

24800  1069 
* Method "evaluation" solves goals (i.e. a boolean expression) 
1070 
efficiently by compiling it to ML. The goal is "proved" (via an 

1071 
oracle) if it evaluates to True. 

20807  1072 

1073 
* Linear arithmetic now splits certain operators (e.g. min, max, abs) 

24800  1074 
also when invoked by the simplifier. This results in the Simplifier 
1075 
being more powerful on arithmetic goals. INCOMPATIBILITY. 

1076 
Configuration option fast_arith_split_limit=0 recovers the old 

1077 
behavior. 

20217
25b068a99d2b
linear arithmetic splits certain operators (e.g. min, max, abs)
webertj
parents:
20188
diff
changeset

1078 

22126  1079 
* Support for hex (0x20) and binary (0b1001) numerals. 
19254  1080 

20807  1081 
* New method: reify eqs (t), where eqs are equations for an 
1082 
interpretation I :: 'a list => 'b => 'c and t::'c is an optional 

1083 
parameter, computes a term s::'b and a list xs::'a list and proves the 

1084 
theorem I xs s = t. This is also known as reification or quoting. The 

1085 
resulting theorem is applied to the subgoal to substitute t with I xs 

1086 
s. If t is omitted, the subgoal itself is reified. 

1087 

1088 
* New method: reflection corr_thm eqs (t). The parameters eqs and (t) 

1089 
are as explained above. corr_thm is a theorem for I vs (f t) = I vs t, 

1090 
where f is supposed to be a computable function (in the sense of code 

1091 
generattion). The method uses reify to compute s and xs as above then 

1092 
applies corr_thm and uses normalization by evaluation to "prove" f s = 

1093 
r and finally gets the theorem t = r, which is again applied to the 

1094 
subgoal. An Example is available in HOL/ex/ReflectionEx.thy. 

1095 

23881  1096 
* Reflection: Automatic reification now handels binding, an example 
20807  1097 
is available in HOL/ex/ReflectionEx.thy 
1098 

1099 

19653  1100 
*** HOLComplex *** 
1101 

22971  1102 
* Hyperreal: Functions root and sqrt are now defined on negative real 
1103 
inputs so that root n ( x) =  root n x and sqrt ( x) =  sqrt x. 

1104 
Nonnegativity side conditions have been removed from many lemmas, so 

1105 
that more subgoals may now be solved by simplification; potential 

1106 
INCOMPATIBILITY. 

1107 

24800  1108 
* Real: new type classes formalize real normed vector spaces and 
21791  1109 
algebras, using new overloaded constants scaleR :: real => 'a => 'a 
1110 
and norm :: 'a => real. 

1111 

24800  1112 
* Real: constant of_real :: real => 'a::real_algebra_1 injects from 
1113 
reals into other types. The overloaded constant Reals :: 'a set is now 

1114 
defined as range of_real; potential INCOMPATIBILITY. 

1115 

1116 
* Real: proper support for ML code generation, including 'quickcheck'. 

23013  1117 
Reals are implemented as arbitrary precision rationals. 
1118 

22126  1119 
* Hyperreal: Several constants that previously worked only for the 
1120 
reals have been generalized, so they now work over arbitrary vector 

1121 
spaces. Type annotations may need to be added in some cases; potential 

1122 
INCOMPATIBILITY. 

21791  1123 

22972
3e96b98d37c6
generalized sgn function to work on any real normed vector space
huffman
parents:
22971
diff
changeset

1124 
Infinitesimal :: ('a::real_normed_vector) star set 
3e96b98d37c6
generalized sgn function to work on any real normed vector space
huffman
parents:
22971
diff
changeset

1125 
HFinite :: ('a::real_normed_vector) star set 
3e96b98d37c6
generalized sgn function to work on any real normed vector space
huffman
parents:
22971
diff
changeset

1126 
HInfinite :: ('a::real_normed_vector) star set 
21791  1127 
approx :: ('a::real_normed_vector) star => 'a star => bool 
1128 
monad :: ('a::real_normed_vector) star => 'a star set 

1129 
galaxy :: ('a::real_normed_vector) star => 'a star set 

22972
3e96b98d37c6
generalized sgn function to work on any real normed vector space
huffman
parents:
22971
diff
changeset

1130 
(NS)LIMSEQ :: [nat => 'a::real_normed_vector, 'a] => bool 
21791  1131 
(NS)convergent :: (nat => 'a::real_normed_vector) => bool 
1132 
(NS)Bseq :: (nat => 'a::real_normed_vector) => bool 

1133 
(NS)Cauchy :: (nat => 'a::real_normed_vector) => bool 

1134 
(NS)LIM :: ['a::real_normed_vector => 'b::real_normed_vector, 'a, 'b] => bool 

1135 
is(NS)Cont :: ['a::real_normed_vector => 'b::real_normed_vector, 'a] => bool 

1136 
deriv :: ['a::real_normed_field => 'a, 'a, 'a] => bool 

22972
3e96b98d37c6
generalized sgn function to work on any real normed vector space
huffman
parents:
22971
diff
changeset

1137 
sgn :: 'a::real_normed_vector => 'a 
23116  1138 
exp :: 'a::{recpower,real_normed_field,banach} => 'a 
21791  1139 

1140 
* Complex: Some complexspecific constants are now abbreviations for 

22126  1141 
overloaded ones: complex_of_real = of_real, cmod = norm, hcmod = 
1142 
hnorm. Other constants have been entirely removed in favor of the 

1143 
polymorphic versions (INCOMPATIBILITY): 

21791  1144 

1145 
approx < capprox 

1146 
HFinite < CFinite 

1147 
HInfinite < CInfinite 

1148 
Infinitesimal < CInfinitesimal 

1149 
monad < cmonad 

1150 
galaxy < cgalaxy 

1151 
(NS)LIM < (NS)CLIM, (NS)CRLIM 

1152 
is(NS)Cont < is(NS)Contc, is(NS)contCR 

1153 
(ns)deriv < (ns)cderiv 

1154 

19653  1155 

24801  1156 
*** HOLAlgebra *** 
1157 

1158 
* Formalisation of ideals and the quotient construction over rings. 

1159 

1160 
* Order and lattice theory no longer based on records. 

1161 
INCOMPATIBILITY. 

1162 

1163 
* Renamed lemmas least_carrier > least_closed and greatest_carrier > 

1164 
greatest_closed. INCOMPATIBILITY. 

1165 

1166 
* Method algebra is now set up via an attribute. For examples see 

1167 
Ring.thy. INCOMPATIBILITY: the method is now weaker on combinations 

1168 
of algebraic structures. 

1169 

1170 
* Renamed theory CRing to Ring. 

1171 

1172 

1173 
*** HOLNominal *** 

1174 

1175 
* Fully featured support for nominal datatypes (binding structures) 

1176 
due to the HOLNominal logic. See HOL/Nominal, HOL/Nominal/Examples, 

1177 
and http://isabelle.in.tum.de/nominal/download.html 

1178 

1179 

17878  1180 
*** ML *** 
1181 

24643  1182 
* ML basics: just one true type int, which coincides with IntInf.int 
1183 
(even on SML/NJ). 

1184 

22138  1185 
* ML within Isar: antiquotations allow to embed staticallychecked 
1186 
formal entities in the source, referring to the context available at 

1187 
compiletime. For example: 

1188 

1189 
ML {* @{typ "'a => 'b"} *} 

1190 
ML {* @{term "%x. x"} *} 

1191 
ML {* @{prop "x == y"} *} 

1192 
ML {* @{ctyp "'a => 'b"} *} 

1193 
ML {* @{cterm "%x. x"} *} 

1194 
ML {* @{cprop "x == y"} *} 

1195 
ML {* @{thm asm_rl} *} 

1196 
ML {* @{thms asm_rl} *} 

24692  1197 
ML {* @{type_name c} *} 
22376  1198 
ML {* @{const_name c} *} 
1199 
ML {* @{const_syntax c} *} 

22138  1200 
ML {* @{context} *} 
1201 
ML {* @{theory} *} 

1202 
ML {* @{theory Pure} *} 

24692  1203 
ML {* @{theory_ref} *} 
1204 
ML {* @{theory_ref Pure} *} 

22138  1205 
ML {* @{simpset} *} 
1206 
ML {* @{claset} *} 

1207 
ML {* @{clasimpset} *} 

1208 

22151  1209 
The same works for sources being ``used'' within an Isar context. 
1210 

22152  1211 
* ML in Isar: improved error reporting; extra verbosity with 
24706
c58547ff329b
* Pure/Syntax: generic interfaces for parsing and type checking;
wenzelm
parents:
24699
diff
changeset

1212 
ML_Context.trace enabled. 
22152  1213 

19032  1214 
* Pure/General/table.ML: the join operations now works via exceptions 
24706
c58547ff329b
* Pure/Syntax: generic interfaces for parsing and type checking;
wenzelm
parents:
24699
diff
changeset

1215 
DUP/SAME instead of type option. This is simpler in simple cases, and 
19081
085b5badb8de
* Isar/locales: new derived specification elements 'definition', 'abbreviation', 'axiomatization';
wenzelm
parents:
19034
diff
changeset

1216 
admits slightly more efficient complex applications. 
18446  1217 

24800  1218 
* Pure: 'advanced' translation functions (parse_translation etc.) now 
1219 
use Context.generic instead of just theory. 

1220 

18642  1221 
* Pure: datatype Context.generic joins theory/Proof.context and 
18644  1222 
provides some facilities for code that works in either kind of 
18642  1223 
context, notably GenericDataFun for uniform theory and proof data. 
1224 

18737  1225 
* Pure: simplified internal attribute type, which is now always 
24706
c58547ff329b
* Pure/Syntax: generic interfaces for parsing and type checking;
wenzelm
parents:
24699
diff
changeset

1226 
Context.generic * thm > Context.generic * thm. Global (theory) vs. 
c58547ff329b
* Pure/Syntax: generic interfaces for parsing and type checking;
wenzelm
parents:
24699
diff
changeset

1227 
local (Proof.context) attributes have been discontinued, while 
c58547ff329b
* Pure/Syntax: generic interfaces for parsing and type checking;
wenzelm
parents:
24699
diff
changeset

1228 
minimizing code duplication. Thm.rule_attribute and 
c58547ff329b
* Pure/Syntax: generic interfaces for parsing and type checking;
wenzelm
parents:
24699
diff
changeset

1229 
Thm.declaration_attribute build canonical attributes; see also structure 
c58547ff329b
* Pure/Syntax: generic interfaces for parsing and type checking;
wenzelm
parents:
24699
diff
changeset

1230 
Context for further operations on Context.generic, notably 
c58547ff329b
* Pure/Syntax: generic interfaces for parsing and type checking;
wenzelm
parents:
24699
diff
changeset

1231 
GenericDataFun. INCOMPATIBILITY, need to adapt attribute type 
19006
2427684c201c
* ML/Pure: generic Args/Attrib syntax everywhere;
wenzelm
parents:
18979
diff
changeset

1232 
declarations and definitions. 
2427684c201c
* ML/Pure: generic Args/Attrib syntax everywhere;
wenzelm
parents:
18979
diff
changeset

1233 

24800  1234 
* Context data interfaces (Theory/Proof/GenericDataFun): removed 
1235 
name/print, uninitialized data defaults to adhoc copy of empty value, 

1236 
init only required for impure data. INCOMPATIBILITY: empty really need 

1237 
to be empty (no dependencies on theory content!) 

1238 

19508  1239 
* Pure/kernel: consts certification ignores sort constraints given in 
24800  1240 
signature declarations. (This information is not relevant to the 
1241 
logic, but only for type inference.) SIGNIFICANT INTERNAL CHANGE, 

1242 
potential INCOMPATIBILITY. 

19508  1243 

1244 
* Pure: axiomatic type classes are now purely definitional, with 

1245 
explicit proofs of class axioms and super class relations performed 

24706
c58547ff329b
* Pure/Syntax: generic interfaces for parsing and type checking;
wenzelm
parents:
24699
diff
changeset

1246 
internally. See Pure/axclass.ML for the main internal interfaces  
19508  1247 
notably AxClass.define_class supercedes AxClass.add_axclass, and 
24706
c58547ff329b
* Pure/Syntax: generic interfaces for parsing and type checking;
wenzelm
parents:
24699
diff
changeset

1248 
AxClass.axiomatize_class/classrel/arity supersede 
19508  1249 
Sign.add_classes/classrel/arities. 
1250 

19006
2427684c201c
* ML/Pure: generic Args/Attrib syntax everywhere;
wenzelm
parents:
18979
diff
changeset

1251 
* Pure/Isar: Args/Attrib parsers operate on Context.generic  
2427684c201c
* ML/Pure: generic Args/Attrib syntax everywhere;
wenzelm
parents:
18979
diff
changeset

1252 
global/local versions on theory vs. Proof.context have been 
2427684c201c
* ML/Pure: generic Args/Attrib syntax everywhere;
wenzelm
parents:
18979
diff
changeset

1253 
discontinued; Attrib.syntax and Method.syntax have been adapted 
2427684c201c
* ML/Pure: generic Args/Attrib syntax everywhere;
wenzelm
parents:
18979
diff
changeset

1254 
accordingly. INCOMPATIBILITY, need to adapt parser expressions for 
2427684c201c
* ML/Pure: generic Args/Attrib syntax everywhere;
wenzelm
parents:
18979
diff
changeset

1255 
attributes, methods, etc. 
18642  1256 

18446  1257 
* Pure: several functions of signature "... > theory > theory * ..." 
1258 
have been reoriented to "... > theory > ... * theory" in order to 

1259 
allow natural usage in combination with the >, >>, > and 

1260 
fold_map combinators. 

18051  1261 

21647
fccafa917a68
* Pure: official theorem names and additional comments are now strictly separate.
wenzelm
parents:
21595
diff
changeset

1262 
* Pure: official theorem names (closed derivations) and additional 
fccafa917a68
* Pure: official theorem names and additional comments are now strictly separate.
wenzelm
parents:
21595
diff
changeset

1263 
comments (tags) are now strictly separate. Name hints  which are 
fccafa917a68
* Pure: official theorem names and additional comments are now strictly separate.
wenzelm
parents:
21595
diff
changeset

1264 
maintained as tags  may be attached any time without affecting the 
fccafa917a68
* Pure: official theorem names and additional comments are now strictly separate.
wenzelm
parents:
21595
diff
changeset

1265 
derivation. 
fccafa917a68
* Pure: official theorem names and additional comments are now strictly separate.
wenzelm
parents:
21595
diff
changeset

1266 

18020  1267 
* Pure: primitive rule lift_rule now takes goal cterm instead of an 
18145  1268 
actual goal state (thm). Use Thm.lift_rule (Thm.cprem_of st i) to 
18020  1269 
achieve the old behaviour. 
1270 

1271 
* Pure: the "Goal" constant is now called "prop", supporting a 

1272 
slightly more general idea of ``protecting'' metalevel rule 

1273 
statements. 

1274 

20040
02c59ec2f2e1
* Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents:
20013
diff
changeset

1275 
* Pure: Logic.(un)varify only works in a global context, which is now 
02c59ec2f2e1
* Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents:
20013
diff
changeset

1276 
enforced instead of silently assumed. INCOMPATIBILITY, may use 
02c59ec2f2e1
* Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents:
20013
diff
changeset

1277 
Logic.legacy_(un)varify as temporary workaround. 
02c59ec2f2e1
* Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents:
20013
diff
changeset

1278 

20090  1279 
* Pure: structure Name provides scalable operations for generating 
1280 
internal variable names, notably Name.variants etc. This replaces 

1281 
some popular functions from term.ML: 

1282 

1283 
Term.variant > Name.variant 

24800  1284 
Term.variantlist > Name.variant_list 
20090  1285 
Term.invent_names > Name.invent_list 
1286 

1287 
Note that lowlevel renaming rarely occurs in new code  operations 

1288 
from structure Variable are used instead (see below). 

1289 

20040
02c59ec2f2e1
* Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents:
20013
diff
changeset

1290 
* Pure: structure Variable provides fundamental operations for proper 
02c59ec2f2e1
* Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents:
20013
diff
changeset

1291 
treatment of fixed/schematic variables in a context. For example, 
02c59ec2f2e1
* Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents:
20013
diff
changeset

1292 
Variable.import introduces fixes for schematics of given facts and 
02c59ec2f2e1
* Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents:
20013
diff
changeset

1293 
Variable.export reverses the effect (up to renaming)  this replaces 
02c59ec2f2e1
* Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents:
20013
diff
changeset

1294 
various freeze_thaw operations. 
02c59ec2f2e1
* Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents:
20013
diff
changeset

1295 

18567  1296 
* Pure: structure Goal provides simple interfaces for 
17981
2602be0d99ae
* Legacy goal package: reduced interface to the bare minimum required to keep existing proof scripts running.
wenzelm
parents:
17918
diff
changeset

1297 
init/conclude/finish and tactical prove operations (replacing former 
20040
02c59ec2f2e1
* Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents:
20013
diff
changeset

1298 
Tactic.prove). Goal.prove is the canonical way to prove results 
02c59ec2f2e1
* Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents:
20013
diff
changeset

1299 
within a given context; Goal.prove_global is a degraded version for 
02c59ec2f2e1
* Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents:
20013
diff
changeset

1300 
theory level goals, including a global Drule.standard. Note that 
02c59ec2f2e1
* Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents:
20013
diff
changeset

1301 
OldGoals.prove_goalw_cterm has long been obsolete, since it is 
02c59ec2f2e1
* Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents:
20013
diff
changeset

1302 
illbehaved in a local proof context (e.g. with local fixes/assumes or 
02c59ec2f2e1
* Pure: structure Variable provides operations for proper treatment of fixed/schematic variables;
wenzelm
parents:
20013
diff
changeset

1303 
in a locale context). 
17981
2602be0d99ae
* Legacy goal package: reduced interface to the bare minimum required to keep existing proof scripts running.
wenzelm
parents:
17918
diff
changeset

1304 

24706
c58547ff329b
* Pure/Syntax: generic interfaces for parsing and type checking;
wenzelm
parents:
24699
diff
changeset

1305 
* Pure/Syntax: generic interfaces for parsing (Syntax.parse_term etc.) 
c58547ff329b
* Pure/Syntax: generic interfaces for parsing and type checking;
wenzelm
parents:
24699
diff
changeset

1306 
and type checking (Syntax.check_term etc.), with common combinations 
c58547ff329b
* Pure/Syntax: generic interfaces for parsing and type checking;
wenzelm
parents:
24699
diff
changeset

1307 
(Syntax.read_term etc.). These supersede former Sign.read_term etc. 
c58547ff329b
* Pure/Syntax: generic interfaces for parsing and type checking;
wenzelm
parents:
24699
diff
changeset

1308 
which are considered legacy and await removal. 
c58547ff329b
* Pure/Syntax: generic interfaces for parsing and type checking;
wenzelm
parents:
24699
diff
changeset

1309 

24920  1310 
* Pure/Syntax: generic interfaces for type unchecking 
1311 
(Syntax.uncheck_terms etc.) and unparsing (Syntax.unparse_term etc.), 

1312 
with common combinations (Syntax.pretty_term, Syntax.string_of_term 

1313 
etc.). Former Sign.pretty_term, Sign.string_of_term etc. are still 

1314 
available for convenience, but refer to the very same operations 

1315 
(using a mere theory instead of a full context). 

1316 

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

1317 
* Isar: simplified treatment of userlevel errors, using exception 
18687  1318 
ERROR of string uniformly. Function error now merely raises ERROR, 
18686
cbbc71acf994
* ML/Isar: simplified treatment of userlevel errors;
wenzelm
parents:
18674
diff
changeset

1319 
without any side effect on output channels. The Isar toplevel takes 
cbbc71acf994
* ML/Isar: simplified treatment of userlevel errors;
wenzelm
parents:
18674
diff
changeset

1320 
care of proper display of ERROR exceptions. ML code may use plain 
cbbc71acf994
* ML/Isar: simplified treatment of userlevel errors;
wenzelm
parents:
18674
diff
changeset

1321 
handle/can/try; cat_error may be used to concatenate errors like this: 
cbbc71acf994
* ML/Isar: simplified treatment of userlevel errors;
wenzelm
parents:
18674
diff
changeset

1322 

cbbc71acf994
* ML/Isar: simplified treatment of userlevel errors;
wenzelm
parents:
18674
diff
changeset

1323 
... handle ERROR msg => cat_error msg "..." 
cbbc71acf994
* ML/Isar: simplified treatment of userlevel errors;
wenzelm
parents:
18674
diff
changeset

1324 

cbbc71acf994
* ML/Isar: simplified treatment of userlevel errors;
wenzelm
parents:
18674
diff
changeset

1325 
Toplevel ML code (run directly or through the Isar toplevel) may be 
18687  1326 
embedded into the Isar toplevel with exception display/debug like 
1327 
this: 

18686
cbbc71acf994
* ML/Isar: simplified treatment of userlevel errors;
wenzelm
parents:
18674
diff
changeset

1328 

cbbc71acf994
* ML/Isar: simplified treatment of userlevel errors;
wenzelm
parents:
18674
diff
changeset

1329 
Isar.toplevel (fn () => ...) 
cbbc71acf994
* ML/Isar: simplified treatment of userlevel errors;
wenzelm
parents:
18674
diff
changeset

1330 

cbbc71acf994
* ML/Isar: simplified treatment of userlevel errors;
wenzelm
parents:
18674
diff
changeset

1331 
INCOMPATIBILITY, removed special transform_error facilities, removed 
cbbc71acf994
* ML/Isar: simplified treatment of userlevel errors;
wenzelm
parents:
18674
diff
changeset

1332 
obsolete variants of userlevel exceptions (ERROR_MESSAGE, 
cbbc71acf994
* ML/Isar: simplified treatment of userlevel errors;
wenzelm
parents:
18674
diff
changeset

1333 
Context.PROOF, ProofContext.CONTEXT, Proof.STATE, ProofHistory.FAIL) 
cbbc71acf994
* ML/Isar: simplified treatment of userlevel errors;
wenzelm
parents:
18674
diff
changeset

1334 
 use plain ERROR instead. 
cbbc71acf994
* ML/Isar: simplified treatment of userlevel errors;
wenzelm
parents:
18674
diff
changeset

1335 

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

1336 
* Isar: theory setup now has type (theory > theory), instead of a 
18722
0888eca0f1be
* ML/Isar: theory setup has type (theory > theory);
wenzelm
parents:
18696
diff
changeset

1337 
list. INCOMPATIBILITY, may use #> to compose setup functions. 
0888eca0f1be
* ML/Isar: theory setup has type (theory > theory);
wenzelm
parents:
18696
diff
changeset

1338 

24706
c58547ff329b
* Pure/Syntax: generic interfaces for parsing and type checking;
wenzelm
parents:
24699
diff
changeset

1339 
* Isar: ML toplevel pretty printer for type Proof.context, subject to 
c58547ff329b
* Pure/Syntax: generic interfaces for parsing and type checking;
wenzelm
parents:
24699
diff
changeset

1340 
ProofContext.debug/verbose flags. 
18815
cb778c0ce1b5
Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents:
18738
diff
changeset

1341 

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

1342 
* Isar: Toplevel.theory_to_proof admits transactions that modify the 
cb778c0ce1b5
Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents:
18738
diff
changeset

1343 
theory before entering a proof state. Transactions now always see a 
cb778c0ce1b5
Pure/Isar: (un)folded, (un)fold, unfolding support
wenzelm
parents:
18738
diff
changeset

1344 
quasifunctional intermediate checkpoint, both in interactive and 
18590
f6a553aa3d81
Pure/Isar: Toplevel.theory_to_proof admits transactions that modify the theory;
wenzelm
parents:
18568
diff
changeset

1345 
batch mode. 
18567  1346 

24867  1347 
* Isar: simplified interfaces for outer syntax. Renamed 
1348 
OuterSyntax.add_keywords to OuterSyntax.keywords. Removed 

1349 
OuterSyntax.add_parsers  this functionality is now included in 

1350 
OuterSyntax.command etc. INCOMPATIBILITY. 

1351 

17878  1352 
* Simplifier: the simpset of a running simplification process now 
1353 
contains a proof context (cf. Simplifier.the_context), which is the 

1354 
very context that the initial simpset has been retrieved from (by 

17890  1355 
simpset_of/local_simpset_of). Consequently, all plugin components 
17878  1356 
(solver, looper etc.) may depend on arbitrary proof data. 
1357 

1358 
* Simplifier.inherit_context inherits the proof context (plus the 

1359 
local bounds) of the current simplification process; any simproc 

1360 
etc. that calls the Simplifier recursively should do this! Removed 

1361 
former Simplifier.inherit_bounds, which is already included here  

17890  1362 
INCOMPATIBILITY. Tools based on lowlevel rewriting may even have to 
1363 
specify an explicit context using Simplifier.context/theory_context. 

17878  1364 

1365 
* Simplifier/Classical Reasoner: more abstract interfaces 

1366 
change_simpset/claset for modifying the simpset/claset reference of a 

1367 
theory; raw versions simpset/claset_ref etc. have been discontinued  

1368 
INCOMPATIBILITY. 

1369 

18540  1370 
* Provers: more generic wrt. syntax of objectlogics, avoid hardwired 
1371 
"Trueprop" etc. 

1372 

17878  1373 

20988
0887d0dd3210
* isabelleprocess: option S (secure mode) disables some critical operations;
wenzelm
parents:
20951
diff
changeset

1374 
*** System *** 
0887d0dd3210
* isabelleprocess: option S (secure mode) disables some critical operations;
wenzelm
parents:
20951
diff
changeset

1375 

21471
03a5ef1936c5
* settings: ML_IDENTIFIER includes the Isabelle version identifier;
wenzelm
parents:
21462
diff
changeset

1376 
* settings: ML_IDENTIFIER  which is appended to user specific heap 
03a5ef1936c5
* settings: ML_IDENTIFIER includes the Isabelle version identifier;
wenzelm
parents:
21462
diff
changeset

1377 
locations  now includes the Isabelle version identifier as well. 
03a5ef1936c5
* settings: ML_IDENTIFIER includes the Isabelle version identifier;
wenzelm
parents:
21462
diff
changeset

1378 
This simplifies use of multiple Isabelle installations. 
03a5ef1936c5
* settings: ML_IDENTIFIER includes the Isabelle version identifier;
wenzelm
parents:
21462
diff
changeset

1379 

20988
0887d0dd3210
* isabelleprocess: option S (secure mode) disables some critical operations;
wenzelm
parents:
20951
diff
changeset

1380 
* isabelleprocess: option S (secure mode) disables some critical 
0887d0dd3210
* isabelleprocess: option S (secure mode) disables some critical operations;
wenzelm
parents:
20951
diff
changeset

1381 
operations, notably runtime compilation and evaluation of ML source 
0887d0dd3210
* isabelleprocess: option S (secure mode) disables some critical operations;
wenzelm
parents:
20951
diff
changeset

1382 
code. 
0887d0dd3210
* isabelleprocess: option S (secure mode) disables some critical operations;
wenzelm
parents:
20951
diff
changeset

1383 

24891  1384 
* Basic Isabelle mode for jEdit, see Isabelle/lib/jedit/. 
1385 

24801  1386 
* Support for parallel execution, using native multicore support of 
24800  1387 
Poly/ML 5.1. The theory loader exploits parallelism when processing 
1388 
independent theories, according to the given theory header 

1389 
specifications. The maximum number of worker threads is specified via 

1390 
usedir option M or the "maxthreads" setting in Proof General. A 

1391 
speedup factor of 1.53.5 can be expected on a 4core machine, and up 

1392 
to 6 on a 8core machine. Usercode needs to observe certain 

1393 
guidelines for threadsafe programming, see appendix A in the Isar 

1394 
Implementation manual. 

24210
a865059c4fcb
* Experimental support for multithreading, using Poly/ML 5.1;
wenzelm
parents:
24187
diff
changeset

1395 

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

1396 

17720  1397 
New in Isabelle2005 (October 2005) 
1398 
 

14655
8a95abf87dd3
Pure: considerably improved version of 'constdefs' command;
wenzelm
parents:
14624
diff
changeset

1399 

8a95abf87dd3
Pure: considerably improved version of 'constdefs' command;
wenzelm
parents:
14624
diff
changeset

1400 
*** General *** 
8a95abf87dd3
Pure: considerably improved version of 'constdefs' command;
wenzelm
parents:
14624
diff
changeset

1401 

15130  1402 
* Theory headers: the new header syntax for Isar theories is 
1403 

1404 
theory <name> 

16234  1405 
imports <theory1> ... <theoryN> 
1406 
uses <file1> ... <fileM> 

15130  1407 