NEWS
author wenzelm
Sat Aug 11 16:02:55 2018 +0200 (16 months ago)
changeset 68740 682ff0e84387
parent 68734 c14a2cc9b5ef
parent 68706 f3763989d589
child 68770 add44e2b8cb0
permissions -rw-r--r--
merged;
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Isabelle NEWS -- history of user-relevant changes
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=================================================
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(Note: Isabelle/jEdit shows a tree-view of the NEWS file in Sidekick.)
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New in this Isabelle version
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----------------------------
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New in Isabelle2018 (August 2018)
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---------------------------------
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*** General ***
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* Session-qualified theory names are mandatory: it is no longer possible
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to refer to unqualified theories from the parent session.
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INCOMPATIBILITY for old developments that have not been updated to
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Isabelle2017 yet (using the "isabelle imports" tool).
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* Only the most fundamental theory names are global, usually the entry
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points to major logic sessions: Pure, Main, Complex_Main, HOLCF, IFOL,
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FOL, ZF, ZFC etc. INCOMPATIBILITY, need to use qualified names for
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formerly global "HOL-Probability.Probability" and "HOL-SPARK.SPARK".
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* Global facts need to be closed: no free variables and no hypotheses.
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Rare INCOMPATIBILITY.
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* Facts stemming from locale interpretation are subject to lazy
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evaluation for improved performance. Rare INCOMPATIBILITY: errors
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stemming from interpretation morphisms might be deferred and thus
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difficult to locate; enable system option "strict_facts" temporarily to
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avoid this.
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* Marginal comments need to be written exclusively in the new-style form
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"\<comment> \<open>text\<close>", old ASCII variants like "-- {* ... *}" are no longer
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supported. INCOMPATIBILITY, use the command-line tool "isabelle
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update_comments" to update existing theory files.
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* Old-style inner comments (* ... *) within the term language are legacy
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and will be discontinued soon: use formal comments "\<comment> \<open>...\<close>" or "\<^cancel>\<open>...\<close>"
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instead.
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* The "op <infix-op>" syntax for infix operators has been replaced by
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"(<infix-op>)". If <infix-op> begins or ends with a "*", there needs to
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be a space between the "*" and the corresponding parenthesis.
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INCOMPATIBILITY, use the command-line tool "isabelle update_op" to
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convert theory and ML files to the new syntax. Because it is based on
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regular expression matching, the result may need a bit of manual
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postprocessing. Invoking "isabelle update_op" converts all files in the
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current directory (recursively). In case you want to exclude conversion
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of ML files (because the tool frequently also converts ML's "op"
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syntax), use option "-m".
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* Theory header 'abbrevs' specifications need to be separated by 'and'.
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INCOMPATIBILITY.
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* Command 'external_file' declares the formal dependency on the given
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file name, such that the Isabelle build process knows about it, but
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without specific Prover IDE management.
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* Session ROOT entries no longer allow specification of 'files'. Rare
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INCOMPATIBILITY, use command 'external_file' within a proper theory
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context.
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* Session root directories may be specified multiple times: each
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accessible ROOT file is processed only once. This facilitates
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specification of $ISABELLE_HOME_USER/ROOTS or command-line options like
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-d or -D for "isabelle build" and "isabelle jedit". Example:
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  isabelle build -D '~~/src/ZF'
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* The command 'display_drafts' has been discontinued. INCOMPATIBILITY,
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use action "isabelle.draft" (or "print") in Isabelle/jEdit instead.
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* In HTML output, the Isabelle symbol "\<hyphen>" is rendered as explicit
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Unicode hyphen U+2010, to avoid unclear meaning of the old "soft hyphen"
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U+00AD. Rare INCOMPATIBILITY, e.g. copy-paste of historic Isabelle HTML
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output.
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*** Isabelle/jEdit Prover IDE ***
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* The command-line tool "isabelle jedit" provides more flexible options
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for session management:
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  - option -R builds an auxiliary logic image with all theories from
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    other sessions that are not already present in its parent
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  - option -S is like -R, with a focus on the selected session and its
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    descendants (this reduces startup time for big projects like AFP)
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  - option -A specifies an alternative ancestor session for options -R
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    and -S
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  - option -i includes additional sessions into the name-space of
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    theories
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  Examples:
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    isabelle jedit -R HOL-Number_Theory
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    isabelle jedit -R HOL-Number_Theory -A HOL
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    isabelle jedit -d '$AFP' -S Formal_SSA -A HOL
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    isabelle jedit -d '$AFP' -S Formal_SSA -A HOL-Analysis
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    isabelle jedit -d '$AFP' -S Formal_SSA -A HOL-Analysis -i CryptHOL
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* PIDE markup for session ROOT files: allows to complete session names,
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follow links to theories and document files etc.
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* Completion supports theory header imports, using theory base name.
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E.g. "Prob" may be completed to "HOL-Probability.Probability".
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* Named control symbols (without special Unicode rendering) are shown as
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bold-italic keyword. This is particularly useful for the short form of
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antiquotations with control symbol: \<^name>\<open>argument\<close>. The action
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"isabelle.antiquoted_cartouche" turns an antiquotation with 0 or 1
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arguments into this format.
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* Completion provides templates for named symbols with arguments,
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e.g. "\<comment> \<open>ARGUMENT\<close>" or "\<^emph>\<open>ARGUMENT\<close>".
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* Slightly more parallel checking, notably for high priority print
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functions (e.g. State output).
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* The view title is set dynamically, according to the Isabelle
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distribution and the logic session name. The user can override this via
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set-view-title (stored persistently in $JEDIT_SETTINGS/perspective.xml).
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* System options "spell_checker_include" and "spell_checker_exclude"
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supersede former "spell_checker_elements" to determine regions of text
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that are subject to spell-checking. Minor INCOMPATIBILITY.
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* Action "isabelle.preview" is able to present more file formats,
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notably bibtex database files and ML files.
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* Action "isabelle.draft" is similar to "isabelle.preview", but shows a
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plain-text document draft. Both are available via the menu "Plugins /
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Isabelle".
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* When loading text files, the Isabelle symbols encoding UTF-8-Isabelle
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is only used if there is no conflict with existing Unicode sequences in
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the file. Otherwise, the fallback encoding is plain UTF-8 and Isabelle
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symbols remain in literal \<symbol> form. This avoids accidental loss of
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Unicode content when saving the file.
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* Bibtex database files (.bib) are semantically checked.
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* Update to jedit-5.5.0, the latest release.
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*** Isabelle/VSCode Prover IDE ***
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* HTML preview of theories and other file-formats similar to
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Isabelle/jEdit.
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* Command-line tool "isabelle vscode_server" accepts the same options
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-A, -R, -S, -i for session selection as "isabelle jedit". This is
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relevant for isabelle.args configuration settings in VSCode. The former
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option -A (explore all known session files) has been discontinued: it is
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enabled by default, unless option -S is used to focus on a particular
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spot in the session structure. INCOMPATIBILITY.
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*** Document preparation ***
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* Formal comments work uniformly in outer syntax, inner syntax (term
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language), Isabelle/ML and some other embedded languages of Isabelle.
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See also "Document comments" in the isar-ref manual. The following forms
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are supported:
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  - marginal text comment: \<comment> \<open>\<dots>\<close>
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  - canceled source: \<^cancel>\<open>\<dots>\<close>
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  - raw LaTeX: \<^latex>\<open>\<dots>\<close>
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* Outside of the inner theory body, the default presentation context is
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theory Pure. Thus elementary antiquotations may be used in markup
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commands (e.g. 'chapter', 'section', 'text') and formal comments.
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* System option "document_tags" specifies alternative command tags. This
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is occasionally useful to control the global visibility of commands via
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session options (e.g. in ROOT).
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* Document markup commands ('section', 'text' etc.) are implicitly
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tagged as "document" and visible by default. This avoids the application
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of option "document_tags" to these commands.
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* Isabelle names are mangled into LaTeX macro names to allow the full
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identifier syntax with underscore, prime, digits. This is relevant for
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antiquotations in control symbol notation, e.g. \<^const_name> becomes
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\isactrlconstUNDERSCOREname.
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* Document preparation with skip_proofs option now preserves the content
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more accurately: only terminal proof steps ('by' etc.) are skipped.
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* Document antiquotation @{theory name} requires the long
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session-qualified theory name: this is what users reading the text
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normally need to import.
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* Document antiquotation @{session name} checks and prints the given
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session name verbatim.
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* Document antiquotation @{cite} now checks the given Bibtex entries
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against the Bibtex database files -- only in batch-mode session builds.
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* Command-line tool "isabelle document" has been re-implemented in
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Isabelle/Scala, with simplified arguments and explicit errors from the
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latex and bibtex process. Minor INCOMPATIBILITY.
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* Session ROOT entry: empty 'document_files' means there is no document
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for this session. There is no need to specify options [document = false]
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anymore.
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*** Isar ***
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* Command 'interpret' no longer exposes resulting theorems as literal
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facts, notably for the \<open>prop\<close> notation or the "fact" proof method. This
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improves modularity of proofs and scalability of locale interpretation.
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Rare INCOMPATIBILITY, need to refer to explicitly named facts instead
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(e.g. use 'find_theorems' or 'try' to figure this out).
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* The old 'def' command has been discontinued (legacy since
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Isbelle2016-1). INCOMPATIBILITY, use 'define' instead -- usually with
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object-logic equality or equivalence.
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*** Pure ***
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* The inner syntax category "sort" now includes notation "_" for the
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dummy sort: it is effectively ignored in type-inference.
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* Rewrites clauses (keyword 'rewrites') were moved into the locale
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expression syntax, where they are part of locale instances. In
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interpretation commands rewrites clauses now need to occur before 'for'
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and 'defines'. Rare INCOMPATIBILITY; definitions immediately subject to
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rewriting may need to be pulled up into the surrounding theory.
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* For 'rewrites' clauses, if activating a locale instance fails, fall
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back to reading the clause first. This helps avoid qualification of
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locale instances where the qualifier's sole purpose is avoiding
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duplicate constant declarations.
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* Proof method "simp" now supports a new modifier "flip:" followed by a
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list of theorems. Each of these theorems is removed from the simpset
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(without warning if it is not there) and the symmetric version of the
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theorem (i.e. lhs and rhs exchanged) is added to the simpset. For "auto"
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and friends the modifier is "simp flip:".
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*** HOL ***
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* Sledgehammer: bundled version of "vampire" (for non-commercial users)
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helps to avoid fragility of "remote_vampire" service.
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* Clarified relationship of characters, strings and code generation:
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  - Type "char" is now a proper datatype of 8-bit values.
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  - Conversions "nat_of_char" and "char_of_nat" are gone; use more
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    general conversions "of_char" and "char_of" with suitable type
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    constraints instead.
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  - The zero character is just written "CHR 0x00", not "0" any longer.
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  - Type "String.literal" (for code generation) is now isomorphic to
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    lists of 7-bit (ASCII) values; concrete values can be written as
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    "STR ''...''" for sequences of printable characters and "STR 0x..."
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    for one single ASCII code point given as hexadecimal numeral.
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  - Type "String.literal" supports concatenation "... + ..." for all
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    standard target languages.
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  - Theory HOL-Library.Code_Char is gone; study the explanations
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    concerning "String.literal" in the tutorial on code generation to
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    get an idea how target-language string literals can be converted to
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    HOL string values and vice versa.
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  - Session Imperative-HOL: operation "raise" directly takes a value of
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    type "String.literal" as argument, not type "string".
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INCOMPATIBILITY.
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* Code generation: Code generation takes an explicit option
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"case_insensitive" to accomodate case-insensitive file systems.
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* Abstract bit operations as part of Main: push_bit, take_bit, drop_bit.
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* New, more general, axiomatization of complete_distrib_lattice. The
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former axioms:
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  "sup x (Inf X) = Inf (sup x ` X)" and "inf x (Sup X) = Sup (inf x ` X)"
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are replaced by:
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  "Inf (Sup ` A) <= Sup (Inf ` {f ` A | f . (! Y \<in> A . f Y \<in> Y)})"
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The instantiations of sets and functions as complete_distrib_lattice are
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moved to Hilbert_Choice.thy because their proofs need the Hilbert choice
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operator. The dual of this property is also proved in theory
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HOL.Hilbert_Choice.
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* New syntax for the minimum/maximum of a function over a finite set:
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MIN x\<in>A. B and even MIN x. B (only useful for finite types), also MAX.
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* Clarifed theorem names:
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  Min.antimono ~> Min.subset_imp
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  Max.antimono ~> Max.subset_imp
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Minor INCOMPATIBILITY.
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* SMT module:
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  - The 'smt_oracle' option is now necessary when using the 'smt' method
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    with a solver other than Z3. INCOMPATIBILITY.
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  - The encoding to first-order logic is now more complete in the
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    presence of higher-order quantifiers. An 'smt_explicit_application'
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    option has been added to control this. INCOMPATIBILITY.
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* Facts sum.commute(_restrict) and prod.commute(_restrict) renamed to
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sum.swap(_restrict) and prod.swap(_restrict), to avoid name clashes on
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interpretation of abstract locales. INCOMPATIBILITY.
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* Predicate coprime is now a real definition, not a mere abbreviation.
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INCOMPATIBILITY.
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* Predicate pairwise_coprime abolished, use "pairwise coprime" instead.
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INCOMPATIBILITY.
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* The relator rel_filter on filters has been strengthened to its
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canonical categorical definition with better properties.
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INCOMPATIBILITY.
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* Generalized linear algebra involving linear, span, dependent, dim
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from type class real_vector to locales module and vector_space.
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Renamed:
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  span_inc ~> span_superset
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  span_superset ~> span_base
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  span_eq ~> span_eq_iff
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INCOMPATIBILITY.
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* Class linordered_semiring_1 covers zero_less_one also, ruling out
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pathologic instances. Minor INCOMPATIBILITY.
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* Theory HOL.List: functions "sorted_wrt" and "sorted" now compare every
wenzelm@68393
   349
element in a list to all following elements, not just the next one.
wenzelm@68393
   350
wenzelm@68393
   351
* Theory HOL.List syntax:
wenzelm@68393
   352
wenzelm@68393
   353
  - filter-syntax "[x <- xs. P]" is no longer output syntax, but only
wenzelm@68393
   354
    input syntax
wenzelm@68393
   355
wenzelm@68393
   356
  - list comprehension syntax now supports tuple patterns in "pat <- xs"
nipkow@68249
   357
nipkow@68450
   358
* Theory Map: "empty" must now be qualified as "Map.empty".
nipkow@68450
   359
haftmann@67051
   360
* Removed nat-int transfer machinery. Rare INCOMPATIBILITY.
haftmann@67051
   361
haftmann@68100
   362
* Fact mod_mult_self4 (on nat) renamed to Suc_mod_mult_self3, to avoid
haftmann@68100
   363
clash with fact mod_mult_self4 (on more generic semirings).
haftmann@68100
   364
INCOMPATIBILITY.
haftmann@68100
   365
haftmann@68100
   366
* Eliminated some theorem aliasses:
haftmann@68100
   367
  even_times_iff ~> even_mult_iff
haftmann@68100
   368
  mod_2_not_eq_zero_eq_one_nat ~> not_mod_2_eq_0_eq_1
haftmann@68100
   369
  even_of_nat ~> even_int_iff
haftmann@68100
   370
haftmann@68100
   371
INCOMPATIBILITY.
haftmann@68100
   372
haftmann@68157
   373
* Eliminated some theorem duplicate variations:
wenzelm@68393
   374
wenzelm@68393
   375
  - dvd_eq_mod_eq_0_numeral can be replaced by dvd_eq_mod_eq_0
wenzelm@68393
   376
  - mod_Suc_eq_Suc_mod can be replaced by mod_Suc
wenzelm@68393
   377
  - mod_Suc_eq_Suc_mod [symmetrict] can be replaced by mod_simps
wenzelm@68393
   378
  - mod_eq_0_iff can be replaced by mod_eq_0_iff_dvd and dvd_def
wenzelm@68393
   379
  - the witness of mod_eqD can be given directly as "_ div _"
haftmann@68157
   380
haftmann@68157
   381
INCOMPATIBILITY.
haftmann@68157
   382
haftmann@68260
   383
* Classical setup: Assumption "m mod d = 0" (for m d :: nat) is no
wenzelm@68393
   384
longer aggresively destroyed to "\<exists>q. m = d * q". INCOMPATIBILITY, adding
wenzelm@68393
   385
"elim!: dvd" to classical proof methods in most situations restores
wenzelm@68393
   386
broken proofs.
wenzelm@68393
   387
wenzelm@68393
   388
* Theory HOL-Library.Conditional_Parametricity provides command
wenzelm@68393
   389
'parametric_constant' for proving parametricity of non-recursive
wenzelm@68393
   390
definitions. For constants that are not fully parametric the command
wenzelm@68393
   391
will infer conditions on relations (e.g., bi_unique, bi_total, or type
wenzelm@68393
   392
class conditions such as "respects 0") sufficient for parametricity. See
wenzelm@68393
   393
theory HOL-ex.Conditional_Parametricity_Examples for some examples.
wenzelm@68393
   394
wenzelm@68393
   395
* Theory HOL-Library.Code_Lazy provides a new preprocessor for the code
wenzelm@68393
   396
generator to generate code for algebraic types with lazy evaluation
Andreas@68639
   397
semantics even in call-by-value target languages. See the theories
wenzelm@68647
   398
HOL-ex.Code_Lazy_Demo and HOL-Codegenerator_Test.Code_Lazy_Test for some
wenzelm@68647
   399
examples.
wenzelm@68393
   400
wenzelm@68393
   401
* Theory HOL-Library.Landau_Symbols has been moved here from AFP.
wenzelm@68393
   402
wenzelm@68393
   403
* Theory HOL-Library.Old_Datatype no longer provides the legacy command
wenzelm@68393
   404
'old_datatype'. INCOMPATIBILITY.
wenzelm@68393
   405
wenzelm@68393
   406
* Theory HOL-Computational_Algebra.Polynomial_Factorial does not provide
wenzelm@68393
   407
instances of rat, real, complex as factorial rings etc. Import
wenzelm@68393
   408
HOL-Computational_Algebra.Field_as_Ring explicitly in case of need.
wenzelm@68393
   409
INCOMPATIBILITY.
wenzelm@68393
   410
wenzelm@68393
   411
* Session HOL-Algebra: renamed (^) to [^] to avoid conflict with new
wenzelm@68393
   412
infix/prefix notation.
wenzelm@68393
   413
wenzelm@68543
   414
* Session HOL-Algebra: revamped with much new material. The set of
wenzelm@68543
   415
isomorphisms between two groups is now denoted iso rather than iso_set.
wenzelm@68543
   416
INCOMPATIBILITY.
wenzelm@68543
   417
wenzelm@68543
   418
* Session HOL-Analysis: the Arg function now respects the same interval
wenzelm@68543
   419
as Ln, namely (-pi,pi]; the old Arg function has been renamed Arg2pi.
lp15@68499
   420
INCOMPATIBILITY.
lp15@68499
   421
wenzelm@68548
   422
* Session HOL-Analysis: the functions zorder, zer_poly, porder and
wenzelm@68548
   423
pol_poly have been redefined. All related lemmas have been reworked.
wl302@68531
   424
INCOMPATIBILITY.
wl302@68531
   425
wenzelm@68393
   426
* Session HOL-Analysis: infinite products, Moebius functions, the
wenzelm@68393
   427
Riemann mapping theorem, the Vitali covering theorem,
wenzelm@68393
   428
change-of-variables results for integration and measures.
haftmann@68260
   429
wenzelm@68647
   430
* Session HOL-Real_Asymp: proof method "real_asymp" proves asymptotics
wenzelm@68647
   431
or real-valued functions (limits, "Big-O", etc.) automatically.
wenzelm@68681
   432
See also ~~/src/HOL/Real_Asymp/Manual for some documentation.
wenzelm@68647
   433
wenzelm@68545
   434
* Session HOL-Types_To_Sets: more tool support (unoverload_type combines
wenzelm@68545
   435
internalize_sorts and unoverload) and larger experimental application
wenzelm@68545
   436
(type based linear algebra transferred to linear algebra on subspaces).
immler@68522
   437
wenzelm@66651
   438
wenzelm@68116
   439
*** ML ***
wenzelm@68116
   440
wenzelm@68116
   441
* Operation Export.export emits theory exports (arbitrary blobs), which
wenzelm@68116
   442
are stored persistently in the session build database.
wenzelm@68116
   443
wenzelm@68276
   444
* Command 'ML_export' exports ML toplevel bindings to the global
wenzelm@68276
   445
bootstrap environment of the ML process. This allows ML evaluation
wenzelm@68276
   446
without a formal theory context, e.g. in command-line tools like
wenzelm@68276
   447
"isabelle process".
wenzelm@68276
   448
wenzelm@68116
   449
wenzelm@66729
   450
*** System ***
wenzelm@66729
   451
wenzelm@67088
   452
* Mac OS X 10.10 Yosemite is now the baseline version; Mavericks is no
wenzelm@67088
   453
longer supported.
wenzelm@67088
   454
wenzelm@68393
   455
* Linux and Windows/Cygwin is for x86_64 only, old 32bit platform
wenzelm@68393
   456
support has been discontinued.
wenzelm@68393
   457
wenzelm@66906
   458
* Java runtime is for x86_64 only. Corresponding Isabelle settings have
wenzelm@66906
   459
been renamed to ISABELLE_TOOL_JAVA_OPTIONS and JEDIT_JAVA_OPTIONS,
wenzelm@66906
   460
instead of former 32/64 variants. INCOMPATIBILITY.
wenzelm@66906
   461
wenzelm@68003
   462
* Old settings ISABELLE_PLATFORM and ISABELLE_WINDOWS_PLATFORM should be
wenzelm@68003
   463
phased out due to unclear preference of 32bit vs. 64bit architecture.
wenzelm@68003
   464
Explicit GNU bash expressions are now preferred, for example (with
wenzelm@68003
   465
quotes):
wenzelm@68003
   466
wenzelm@68003
   467
  #Posix executables (Unix or Cygwin), with preference for 64bit
wenzelm@68003
   468
  "${ISABELLE_PLATFORM64:-$ISABELLE_PLATFORM32}"
wenzelm@68003
   469
wenzelm@68003
   470
  #native Windows or Unix executables, with preference for 64bit
wenzelm@68003
   471
  "${ISABELLE_WINDOWS_PLATFORM64:-${ISABELLE_WINDOWS_PLATFORM32:-${ISABELLE_PLATFORM64:-$ISABELLE_PLATFORM32}}}"
wenzelm@68003
   472
wenzelm@68003
   473
  #native Windows (32bit) or Unix executables (preference for 64bit)
wenzelm@68003
   474
  "${ISABELLE_WINDOWS_PLATFORM32:-${ISABELLE_PLATFORM64:-$ISABELLE_PLATFORM32}}"
wenzelm@68003
   475
wenzelm@66745
   476
* Command-line tool "isabelle build" supports new options:
wenzelm@66745
   477
  - option -B NAME: include session NAME and all descendants
wenzelm@66745
   478
  - option -S: only observe changes of sources, not heap images
wenzelm@66841
   479
  - option -f: forces a fresh build
wenzelm@66737
   480
wenzelm@68734
   481
* Command-line tool "isabelle build" options -c -x -B refer to
wenzelm@68734
   482
descendants wrt. the session parent or import graph. Subtle
wenzelm@68734
   483
INCOMPATIBILITY: options -c -x used to refer to the session parent graph
wenzelm@68734
   484
only.
wenzelm@68734
   485
wenzelm@66843
   486
* Command-line tool "isabelle build" takes "condition" options with the
wenzelm@66843
   487
corresponding environment values into account, when determining the
wenzelm@66843
   488
up-to-date status of a session.
wenzelm@66843
   489
wenzelm@68393
   490
* The command-line tool "dump" dumps information from the cumulative
wenzelm@68393
   491
PIDE session database: many sessions may be loaded into a given logic
wenzelm@68393
   492
image, results from all loaded theories are written to the output
wenzelm@68393
   493
directory.
wenzelm@68393
   494
wenzelm@66851
   495
* Command-line tool "isabelle imports -I" also reports actual session
wenzelm@66851
   496
imports. This helps to minimize the session dependency graph.
wenzelm@66851
   497
wenzelm@68393
   498
* The command-line tool "export" and 'export_files' in session ROOT
wenzelm@68393
   499
entries retrieve theory exports from the session build database.
wenzelm@68393
   500
wenzelm@68393
   501
* The command-line tools "isabelle server" and "isabelle client" provide
wenzelm@68393
   502
access to the Isabelle Server: it supports responsive session management
wenzelm@68393
   503
and concurrent use of theories, based on Isabelle/PIDE infrastructure.
wenzelm@68393
   504
See also the "system" manual.
wenzelm@68393
   505
wenzelm@68393
   506
* The command-line tool "isabelle update_comments" normalizes formal
wenzelm@68393
   507
comments in outer syntax as follows: \<comment> \<open>text\<close> (whith a single space to
wenzelm@68393
   508
approximate the appearance in document output). This is more specific
wenzelm@68393
   509
than former "isabelle update_cartouches -c": the latter tool option has
wenzelm@68393
   510
been discontinued.
wenzelm@68393
   511
wenzelm@68393
   512
* The command-line tool "isabelle mkroot" now always produces a document
wenzelm@68393
   513
outline: its options have been adapted accordingly. INCOMPATIBILITY.
wenzelm@68393
   514
wenzelm@68393
   515
* The command-line tool "isabelle mkroot -I" initializes a Mercurial
wenzelm@68393
   516
repository for the generated session files.
wenzelm@68393
   517
wenzelm@68523
   518
* Settings ISABELLE_HEAPS + ISABELLE_BROWSER_INFO (or
wenzelm@68523
   519
ISABELLE_HEAPS_SYSTEM + ISABELLE_BROWSER_INFO_SYSTEM in "system build
wenzelm@68523
   520
mode") determine the directory locations of the main build artefacts --
wenzelm@68523
   521
instead of hard-wired directories in ISABELLE_HOME_USER (or
wenzelm@68523
   522
ISABELLE_HOME).
wenzelm@68523
   523
wenzelm@68393
   524
* Settings ISABELLE_PATH and ISABELLE_OUTPUT have been discontinued:
wenzelm@68393
   525
heap images and session databases are always stored in
wenzelm@68523
   526
$ISABELLE_HEAPS/$ML_IDENTIFIER (command-line default) or
wenzelm@68523
   527
$ISABELLE_HEAPS_SYSTEM/$ML_IDENTIFIER (main Isabelle application or
wenzelm@68393
   528
"isabelle jedit -s" or "isabelle build -s").
wenzelm@67099
   529
wenzelm@67199
   530
* ISABELLE_LATEX and ISABELLE_PDFLATEX now include platform-specific
wenzelm@67199
   531
options for improved error reporting. Potential INCOMPATIBILITY with
wenzelm@67199
   532
unusual LaTeX installations, may have to adapt these settings.
wenzelm@67199
   533
wenzelm@68393
   534
* Update to Poly/ML 5.7.1 with slightly improved performance and PIDE
wenzelm@68393
   535
markup for identifier bindings. It now uses The GNU Multiple Precision
wenzelm@67591
   536
Arithmetic Library (libgmp) on all platforms, notably Mac OS X with
wenzelm@67591
   537
32/64 bit.
wenzelm@67591
   538
wenzelm@67099
   539
wenzelm@66729
   540
wenzelm@66472
   541
New in Isabelle2017 (October 2017)
wenzelm@66472
   542
----------------------------------
wenzelm@64439
   543
wenzelm@64986
   544
*** General ***
wenzelm@64986
   545
wenzelm@66238
   546
* Experimental support for Visual Studio Code (VSCode) as alternative
wenzelm@66238
   547
Isabelle/PIDE front-end, see also
wenzelm@66599
   548
https://marketplace.visualstudio.com/items?itemName=makarius.Isabelle2017
wenzelm@66238
   549
wenzelm@66238
   550
VSCode is a new type of application that continues the concepts of
wenzelm@66238
   551
"programmer's editor" and "integrated development environment" towards
wenzelm@66238
   552
fully semantic editing and debugging -- in a relatively light-weight
wenzelm@66238
   553
manner. Thus it fits nicely on top of the Isabelle/PIDE infrastructure.
wenzelm@66238
   554
Technically, VSCode is based on the Electron application framework
wenzelm@66238
   555
(Node.js + Chromium browser + V8), which is implemented in JavaScript
wenzelm@66238
   556
and TypeScript, while Isabelle/VSCode mainly consists of Isabelle/Scala
wenzelm@66238
   557
modules around a Language Server implementation.
wenzelm@66238
   558
wenzelm@65504
   559
* Theory names are qualified by the session name that they belong to.
wenzelm@66454
   560
This affects imports, but not the theory name space prefix (which is
wenzelm@66454
   561
just the theory base name as before).
wenzelm@66454
   562
wenzelm@66454
   563
In order to import theories from other sessions, the ROOT file format
wenzelm@66454
   564
provides a new 'sessions' keyword. In contrast, a theory that is
wenzelm@66454
   565
imported in the old-fashioned manner via an explicit file-system path
wenzelm@66472
   566
belongs to the current session, and might cause theory name conflicts
wenzelm@66454
   567
later on. Theories that are imported from other sessions are excluded
wenzelm@66454
   568
from the current session document. The command-line tool "isabelle
wenzelm@66454
   569
imports" helps to update theory imports.
wenzelm@66454
   570
wenzelm@65451
   571
* The main theory entry points for some non-HOL sessions have changed,
wenzelm@65451
   572
to avoid confusion with the global name "Main" of the session HOL. This
wenzelm@65451
   573
leads to the follow renamings:
wenzelm@65451
   574
wenzelm@65451
   575
  CTT/Main.thy    ~>  CTT/CTT.thy
wenzelm@65451
   576
  ZF/Main.thy     ~>  ZF/ZF.thy
wenzelm@65451
   577
  ZF/Main_ZF.thy  ~>  ZF/ZF.thy
wenzelm@65451
   578
  ZF/Main_ZFC.thy ~>  ZF/ZFC.thy
wenzelm@65451
   579
  ZF/ZF.thy       ~>  ZF/ZF_Base.thy
wenzelm@65451
   580
wenzelm@65451
   581
INCOMPATIBILITY.
wenzelm@65451
   582
wenzelm@66472
   583
* Commands 'alias' and 'type_alias' introduce aliases for constants and
wenzelm@66472
   584
type constructors, respectively. This allows adhoc changes to name-space
wenzelm@66472
   585
accesses within global or local theory contexts, e.g. within a 'bundle'.
wenzelm@66472
   586
wenzelm@64986
   587
* Document antiquotations @{prf} and @{full_prf} output proof terms
wenzelm@64986
   588
(again) in the same way as commands 'prf' and 'full_prf'.
wenzelm@64986
   589
wenzelm@65055
   590
* Computations generated by the code generator can be embedded directly
wenzelm@65055
   591
into ML, alongside with @{code} antiquotations, using the following
wenzelm@65055
   592
antiquotations:
wenzelm@65055
   593
wenzelm@65055
   594
  @{computation ... terms: ... datatypes: ...} :
wenzelm@65055
   595
    ((term -> term) -> 'ml option -> 'a) -> Proof.context -> term -> 'a
wenzelm@65055
   596
  @{computation_conv ... terms: ... datatypes: ...} :
wenzelm@65055
   597
    (Proof.context -> 'ml -> conv) -> Proof.context -> conv
wenzelm@65045
   598
  @{computation_check terms: ... datatypes: ...} : Proof.context -> conv
haftmann@65041
   599
wenzelm@65055
   600
See src/HOL/ex/Computations.thy,
wenzelm@65055
   601
src/HOL/Decision_Procs/Commutative_Ring.thy and
wenzelm@65055
   602
src/HOL/Decision_Procs/Reflective_Field.thy for examples and the
wenzelm@65055
   603
tutorial on code generation.
haftmann@65041
   604
wenzelm@64986
   605
wenzelm@64602
   606
*** Prover IDE -- Isabelle/Scala/jEdit ***
wenzelm@64602
   607
wenzelm@66472
   608
* Session-qualified theory imports allow the Prover IDE to process
wenzelm@66472
   609
arbitrary theory hierarchies independently of the underlying logic
wenzelm@66472
   610
session image (e.g. option "isabelle jedit -l"), but the directory
wenzelm@66472
   611
structure needs to be known in advance (e.g. option "isabelle jedit -d"
wenzelm@66472
   612
or a line in the file $ISABELLE_HOME_USER/ROOTS).
wenzelm@64602
   613
wenzelm@64842
   614
* The PIDE document model maintains file content independently of the
wenzelm@64842
   615
status of jEdit editor buffers. Reloading jEdit buffers no longer causes
wenzelm@64842
   616
changes of formal document content. Theory dependencies are always
wenzelm@64842
   617
resolved internally, without the need for corresponding editor buffers.
wenzelm@64842
   618
The system option "jedit_auto_load" has been discontinued: it is
wenzelm@64842
   619
effectively always enabled.
wenzelm@64842
   620
wenzelm@64867
   621
* The Theories dockable provides a "Purge" button, in order to restrict
wenzelm@64867
   622
the document model to theories that are required for open editor
wenzelm@64867
   623
buffers.
wenzelm@64867
   624
wenzelm@66424
   625
* The Theories dockable indicates the overall status of checking of each
wenzelm@66424
   626
entry. When all forked tasks of a theory are finished, the border is
wenzelm@66424
   627
painted with thick lines; remaining errors in this situation are
wenzelm@66424
   628
represented by a different border color.
wenzelm@66424
   629
wenzelm@66472
   630
* Automatic indentation is more careful to avoid redundant spaces in
wenzelm@66472
   631
intermediate situations. Keywords are indented after input (via typed
wenzelm@66472
   632
characters or completion); see also option "jedit_indent_input".
wenzelm@66472
   633
wenzelm@66472
   634
* Action "isabelle.preview" opens an HTML preview of the current theory
wenzelm@66472
   635
document in the default web browser.
wenzelm@66472
   636
wenzelm@66574
   637
* Command-line invocation "isabelle jedit -R -l LOGIC" opens the ROOT
wenzelm@66574
   638
entry of the specified logic session in the editor, while its parent is
wenzelm@66574
   639
used for formal checking.
wenzelm@66472
   640
wenzelm@66462
   641
* The main Isabelle/jEdit plugin may be restarted manually (using the
wenzelm@66462
   642
jEdit Plugin Manager), as long as the "Isabelle Base" plugin remains
wenzelm@66462
   643
enabled at all times.
wenzelm@66462
   644
wenzelm@66472
   645
* Update to current jedit-5.4.0.
wenzelm@65329
   646
wenzelm@64602
   647
haftmann@66149
   648
*** Pure ***
haftmann@66149
   649
haftmann@66149
   650
* Deleting the last code equations for a particular function using
haftmann@66149
   651
[code del] results in function with no equations (runtime abort) rather
wenzelm@66472
   652
than an unimplemented function (generation time abort). Use explicit
haftmann@66665
   653
[[code drop:]] to enforce the latter. Minor INCOMPATIBILITY.
haftmann@66149
   654
haftmann@66310
   655
* Proper concept of code declarations in code.ML:
wenzelm@66472
   656
  - Regular code declarations act only on the global theory level, being
wenzelm@66472
   657
    ignored with warnings if syntactically malformed.
wenzelm@66472
   658
  - Explicitly global code declarations yield errors if syntactically
wenzelm@66472
   659
    malformed.
wenzelm@66472
   660
  - Default code declarations are silently ignored if syntactically
wenzelm@66472
   661
    malformed.
haftmann@66310
   662
Minor INCOMPATIBILITY.
haftmann@66310
   663
wenzelm@66472
   664
* Clarified and standardized internal data bookkeeping of code
wenzelm@66472
   665
declarations: history of serials allows to track potentially
wenzelm@66472
   666
non-monotonous declarations appropriately. Minor INCOMPATIBILITY.
haftmann@66310
   667
haftmann@66149
   668
haftmann@64593
   669
*** HOL ***
haftmann@64593
   670
blanchet@66614
   671
* The Nunchaku model finder is now part of "Main".
blanchet@66614
   672
wenzelm@66472
   673
* SMT module:
wenzelm@66472
   674
  - A new option, 'smt_nat_as_int', has been added to translate 'nat' to
wenzelm@66472
   675
    'int' and benefit from the SMT solver's theory reasoning. It is
wenzelm@66472
   676
    disabled by default.
wenzelm@66472
   677
  - The legacy module "src/HOL/Library/Old_SMT.thy" has been removed.
wenzelm@66472
   678
  - Several small issues have been rectified in the 'smt' command.
wenzelm@66472
   679
wenzelm@66472
   680
* (Co)datatype package: The 'size_gen_o_map' lemma is no longer
wenzelm@66472
   681
generated for datatypes with type class annotations. As a result, the
wenzelm@66472
   682
tactic that derives it no longer fails on nested datatypes. Slight
wenzelm@66472
   683
INCOMPATIBILITY.
eberlm@66450
   684
haftmann@66345
   685
* Command and antiquotation "value" with modified default strategy:
haftmann@66345
   686
terms without free variables are always evaluated using plain evaluation
wenzelm@66472
   687
only, with no fallback on normalization by evaluation. Minor
wenzelm@66472
   688
INCOMPATIBILITY.
eberlm@65956
   689
wenzelm@65552
   690
* Theories "GCD" and "Binomial" are already included in "Main" (instead
wenzelm@65575
   691
of "Complex_Main").
wenzelm@65552
   692
haftmann@65170
   693
* Constant "surj" is a full input/output abbreviation (again).
haftmann@65170
   694
Minor INCOMPATIBILITY.
haftmann@65170
   695
haftmann@64632
   696
* Dropped aliasses RangeP, DomainP for Rangep, Domainp respectively.
haftmann@64632
   697
INCOMPATIBILITY.
haftmann@64632
   698
wenzelm@66472
   699
* Renamed ii to imaginary_unit in order to free up ii as a variable
wenzelm@66472
   700
name. The syntax \<i> remains available. INCOMPATIBILITY.
wenzelm@66472
   701
wenzelm@66472
   702
* Dropped abbreviations transP, antisymP, single_valuedP; use constants
wenzelm@66472
   703
transp, antisymp, single_valuedp instead. INCOMPATIBILITY.
wenzelm@66472
   704
wenzelm@66472
   705
* Constant "subseq" in Topological_Spaces has been removed -- it is
wenzelm@66472
   706
subsumed by "strict_mono". Some basic lemmas specific to "subseq" have
wenzelm@66472
   707
been renamed accordingly, e.g. "subseq_o" -> "strict_mono_o" etc.
wenzelm@66472
   708
wenzelm@66472
   709
* Theory List: "sublist" renamed to "nths" in analogy with "nth", and
wenzelm@66472
   710
"sublisteq" renamed to "subseq". Minor INCOMPATIBILITY.
wenzelm@66472
   711
wenzelm@66472
   712
* Theory List: new generic function "sorted_wrt".
wenzelm@66472
   713
wenzelm@66472
   714
* Named theorems mod_simps covers various congruence rules concerning
wenzelm@66472
   715
mod, replacing former zmod_simps. INCOMPATIBILITY.
haftmann@64787
   716
haftmann@64593
   717
* Swapped orientation of congruence rules mod_add_left_eq,
haftmann@64593
   718
mod_add_right_eq, mod_add_eq, mod_mult_left_eq, mod_mult_right_eq,
haftmann@64593
   719
mod_mult_eq, mod_minus_eq, mod_diff_left_eq, mod_diff_right_eq,
wenzelm@66472
   720
mod_diff_eq. INCOMPATIBILITY.
haftmann@64593
   721
haftmann@64593
   722
* Generalized some facts:
blanchet@64876
   723
    measure_induct_rule
blanchet@64876
   724
    measure_induct
haftmann@64593
   725
    zminus_zmod ~> mod_minus_eq
haftmann@64593
   726
    zdiff_zmod_left ~> mod_diff_left_eq
haftmann@64593
   727
    zdiff_zmod_right ~> mod_diff_right_eq
haftmann@64593
   728
    zmod_eq_dvd_iff ~> mod_eq_dvd_iff
haftmann@64593
   729
INCOMPATIBILITY.
haftmann@64593
   730
wenzelm@66472
   731
* Algebraic type class hierarchy of euclidean (semi)rings in HOL:
wenzelm@66472
   732
euclidean_(semi)ring, euclidean_(semi)ring_cancel,
wenzelm@66472
   733
unique_euclidean_(semi)ring; instantiation requires provision of a
wenzelm@66472
   734
euclidean size.
wenzelm@66472
   735
wenzelm@66472
   736
* Theory "HOL-Number_Theory.Euclidean_Algorithm" has been reworked:
wenzelm@66472
   737
  - Euclidean induction is available as rule eucl_induct.
wenzelm@66472
   738
  - Constants Euclidean_Algorithm.gcd, Euclidean_Algorithm.lcm,
wenzelm@66472
   739
    Euclidean_Algorithm.Gcd and Euclidean_Algorithm.Lcm allow
wenzelm@66472
   740
    easy instantiation of euclidean (semi)rings as GCD (semi)rings.
wenzelm@66472
   741
  - Coefficients obtained by extended euclidean algorithm are
wenzelm@66472
   742
    available as "bezout_coefficients".
wenzelm@66472
   743
INCOMPATIBILITY.
wenzelm@66472
   744
wenzelm@66472
   745
* Theory "Number_Theory.Totient" introduces basic notions about Euler's
wenzelm@66472
   746
totient function previously hidden as solitary example in theory
wenzelm@66472
   747
Residues. Definition changed so that "totient 1 = 1" in agreement with
wenzelm@66472
   748
the literature. Minor INCOMPATIBILITY.
wenzelm@66472
   749
wenzelm@66542
   750
* New styles in theory "HOL-Library.LaTeXsugar":
nipkow@66541
   751
  - "dummy_pats" for printing equations with "_" on the lhs;
nipkow@66541
   752
  - "eta_expand" for printing eta-expanded terms.
nipkow@66541
   753
wenzelm@66472
   754
* Theory "HOL-Library.Permutations": theorem bij_swap_ompose_bij has
wenzelm@66472
   755
been renamed to bij_swap_compose_bij. INCOMPATIBILITY.
wenzelm@66472
   756
lp15@66643
   757
* New theory "HOL-Library.Going_To_Filter" providing the "f going_to F"
eberlm@66488
   758
filter for describing points x such that f(x) is in the filter F.
eberlm@66488
   759
eberlm@66480
   760
* Theory "HOL-Library.Formal_Power_Series": constants X/E/L/F have been
eberlm@66480
   761
renamed to fps_X/fps_exp/fps_ln/fps_hypergeo to avoid polluting the name
wenzelm@66472
   762
space. INCOMPATIBILITY.
wenzelm@66472
   763
wenzelm@66472
   764
* Theory "HOL-Library.FinFun" has been moved to AFP (again).
wenzelm@66472
   765
INCOMPATIBILITY.
wenzelm@66472
   766
wenzelm@66472
   767
* Theory "HOL-Library.FuncSet": some old and rarely used ASCII
wenzelm@66472
   768
replacement syntax has been removed. INCOMPATIBILITY, standard syntax
wenzelm@66472
   769
with symbols should be used instead. The subsequent commands help to
wenzelm@66472
   770
reproduce the old forms, e.g. to simplify porting old theories:
wenzelm@66472
   771
wenzelm@66472
   772
syntax (ASCII)
wenzelm@66472
   773
  "_PiE" :: "pttrn \<Rightarrow> 'a set \<Rightarrow> 'b set \<Rightarrow> ('a \<Rightarrow> 'b) set"  ("(3PIE _:_./ _)" 10)
wenzelm@66472
   774
  "_Pi"  :: "pttrn \<Rightarrow> 'a set \<Rightarrow> 'b set \<Rightarrow> ('a \<Rightarrow> 'b) set"  ("(3PI _:_./ _)" 10)
wenzelm@66472
   775
  "_lam" :: "pttrn \<Rightarrow> 'a set \<Rightarrow> 'a \<Rightarrow> 'b \<Rightarrow> ('a \<Rightarrow> 'b)"  ("(3%_:_./ _)" [0,0,3] 3)
wenzelm@66472
   776
wenzelm@66472
   777
* Theory "HOL-Library.Multiset": the simprocs on subsets operators of
wenzelm@66472
   778
multisets have been renamed:
wenzelm@66472
   779
wenzelm@66472
   780
  msetless_cancel_numerals ~> msetsubset_cancel
wenzelm@66472
   781
  msetle_cancel_numerals ~> msetsubset_eq_cancel
wenzelm@66472
   782
wenzelm@66472
   783
INCOMPATIBILITY.
wenzelm@66472
   784
lars@66481
   785
* Theory "HOL-Library.Pattern_Aliases" provides input and output syntax
lars@66481
   786
for pattern aliases as known from Haskell, Scala and ML.
blanchet@65515
   787
Andreas@66563
   788
* Theory "HOL-Library.Uprod" formalizes the type of unordered pairs.
Andreas@66563
   789
wenzelm@64898
   790
* Session HOL-Analysis: more material involving arcs, paths, covering
wenzelm@66650
   791
spaces, innessential maps, retracts, infinite products, simplicial
wenzelm@66650
   792
complexes. Baire Category theorem. Major results include the Jordan
wenzelm@66650
   793
Curve Theorem and the Great Picard Theorem.
wenzelm@66472
   794
wenzelm@66472
   795
* Session HOL-Algebra has been extended by additional lattice theory:
wenzelm@66472
   796
the Knaster-Tarski fixed point theorem and Galois Connections.
wenzelm@66472
   797
wenzelm@66472
   798
* Sessions HOL-Computational_Algebra and HOL-Number_Theory: new notions
wenzelm@66472
   799
of squarefreeness, n-th powers, and prime powers.
wenzelm@66472
   800
wenzelm@66472
   801
* Session "HOL-Computional_Algebra" covers many previously scattered
wenzelm@66472
   802
theories, notably Euclidean_Algorithm, Factorial_Ring,
wenzelm@66472
   803
Formal_Power_Series, Fraction_Field, Fundamental_Theorem_Algebra,
wenzelm@66472
   804
Normalized_Fraction, Polynomial_FPS, Polynomial, Primes. Minor
wenzelm@66472
   805
INCOMPATIBILITY.
Mathias@65027
   806
wenzelm@60331
   807
wenzelm@64844
   808
*** System ***
wenzelm@64844
   809
wenzelm@66474
   810
* Isabelle/Scala: the SQL module supports access to relational
wenzelm@66474
   811
databases, either as plain file (SQLite) or full-scale server
wenzelm@66474
   812
(PostgreSQL via local port or remote ssh connection).
wenzelm@66474
   813
wenzelm@66474
   814
* Results of "isabelle build" are recorded as SQLite database (i.e.
wenzelm@66474
   815
"Application File Format" in the sense of
wenzelm@66474
   816
https://www.sqlite.org/appfileformat.html). This allows systematic
wenzelm@66474
   817
access via operations from module Sessions.Store in Isabelle/Scala.
wenzelm@66474
   818
wenzelm@66472
   819
* System option "parallel_proofs" is 1 by default (instead of more
wenzelm@66472
   820
aggressive 2). This requires less heap space and avoids burning parallel
wenzelm@66472
   821
CPU cycles, while full subproof parallelization is enabled for repeated
wenzelm@66472
   822
builds (according to parallel_subproofs_threshold).
wenzelm@65072
   823
wenzelm@65448
   824
* System option "record_proofs" allows to change the global
wenzelm@65448
   825
Proofterm.proofs variable for a session. Regular values are are 0, 1, 2;
wenzelm@65448
   826
a negative value means the current state in the ML heap image remains
wenzelm@65448
   827
unchanged.
wenzelm@65448
   828
wenzelm@66472
   829
* Isabelle settings variable ISABELLE_SCALA_BUILD_OPTIONS has been
wenzelm@66472
   830
renamed to ISABELLE_SCALAC_OPTIONS. Rare INCOMPATIBILITY.
wenzelm@66472
   831
wenzelm@66472
   832
* Isabelle settings variables ISABELLE_WINDOWS_PLATFORM,
wenzelm@66472
   833
ISABELLE_WINDOWS_PLATFORM32, ISABELLE_WINDOWS_PLATFORM64 indicate the
wenzelm@66472
   834
native Windows platform (independently of the Cygwin installation). This
wenzelm@66472
   835
is analogous to ISABELLE_PLATFORM, ISABELLE_PLATFORM32,
wenzelm@66472
   836
ISABELLE_PLATFORM64.
wenzelm@65557
   837
wenzelm@66786
   838
* Command-line tool "isabelle build_docker" builds a Docker image from
wenzelm@66786
   839
the Isabelle application bundle for Linux. See also
wenzelm@66786
   840
https://hub.docker.com/r/makarius/isabelle
wenzelm@66786
   841
wenzelm@66473
   842
* Command-line tool "isabelle vscode_server" provides a Language Server
wenzelm@66473
   843
Protocol implementation, e.g. for the Visual Studio Code editor. It
wenzelm@66473
   844
serves as example for alternative PIDE front-ends.
wenzelm@66473
   845
wenzelm@66472
   846
* Command-line tool "isabelle imports" helps to maintain theory imports
wenzelm@66671
   847
wrt. session structure. Examples for the main Isabelle distribution:
wenzelm@66472
   848
wenzelm@66472
   849
  isabelle imports -I -a
wenzelm@66472
   850
  isabelle imports -U -a
wenzelm@66472
   851
  isabelle imports -U -i -a
wenzelm@66472
   852
  isabelle imports -M -a -d '~~/src/Benchmarks'
wenzelm@66472
   853
wenzelm@64844
   854
wenzelm@67099
   855
wenzelm@64072
   856
New in Isabelle2016-1 (December 2016)
wenzelm@64072
   857
-------------------------------------
wenzelm@62216
   858
wenzelm@62440
   859
*** General ***
wenzelm@62440
   860
wenzelm@64390
   861
* Splitter in proof methods "simp", "auto" and friends:
wenzelm@64390
   862
  - The syntax "split add" has been discontinued, use plain "split",
wenzelm@64390
   863
    INCOMPATIBILITY.
wenzelm@64390
   864
  - For situations with many conditional or case expressions, there is
wenzelm@64390
   865
    an alternative splitting strategy that can be much faster. It is
wenzelm@64390
   866
    selected by writing "split!" instead of "split". It applies safe
wenzelm@64390
   867
    introduction and elimination rules after each split rule. As a
wenzelm@64390
   868
    result the subgoal may be split into several subgoals.
wenzelm@64390
   869
wenzelm@63273
   870
* Command 'bundle' provides a local theory target to define a bundle
wenzelm@63273
   871
from the body of specification commands (such as 'declare',
wenzelm@63273
   872
'declaration', 'notation', 'lemmas', 'lemma'). For example:
wenzelm@63273
   873
wenzelm@63273
   874
bundle foo
wenzelm@63273
   875
begin
wenzelm@63273
   876
  declare a [simp]
wenzelm@63273
   877
  declare b [intro]
wenzelm@63273
   878
end
wenzelm@63272
   879
wenzelm@63282
   880
* Command 'unbundle' is like 'include', but works within a local theory
wenzelm@63282
   881
context. Unlike "context includes ... begin", the effect of 'unbundle'
wenzelm@63282
   882
on the target context persists, until different declarations are given.
wenzelm@63282
   883
wenzelm@63977
   884
* Simplified outer syntax: uniform category "name" includes long
wenzelm@63977
   885
identifiers. Former "xname" / "nameref" / "name reference" has been
wenzelm@63977
   886
discontinued.
wenzelm@63977
   887
wenzelm@63977
   888
* Embedded content (e.g. the inner syntax of types, terms, props) may be
wenzelm@63977
   889
delimited uniformly via cartouches. This works better than old-fashioned
wenzelm@63977
   890
quotes when sub-languages are nested.
wenzelm@63977
   891
wenzelm@63977
   892
* Mixfix annotations support general block properties, with syntax
wenzelm@63977
   893
"(\<open>x=a y=b z \<dots>\<close>". Notable property names are "indent", "consistent",
wenzelm@63977
   894
"unbreakable", "markup". The existing notation "(DIGITS" is equivalent
wenzelm@63977
   895
to "(\<open>indent=DIGITS\<close>". The former notation "(00" for unbreakable blocks
wenzelm@63977
   896
is superseded by "(\<open>unbreabable\<close>" --- rare INCOMPATIBILITY.
nipkow@63650
   897
wenzelm@63383
   898
* Proof method "blast" is more robust wrt. corner cases of Pure
wenzelm@63383
   899
statements without object-logic judgment.
wenzelm@63383
   900
wenzelm@63624
   901
* Commands 'prf' and 'full_prf' are somewhat more informative (again):
wenzelm@63977
   902
proof terms are reconstructed and cleaned from administrative thm nodes.
wenzelm@63977
   903
wenzelm@63977
   904
* Code generator: config option "code_timing" triggers measurements of
wenzelm@63977
   905
different phases of code generation. See src/HOL/ex/Code_Timing.thy for
wenzelm@63977
   906
examples.
wenzelm@63977
   907
wenzelm@63977
   908
* Code generator: implicits in Scala (stemming from type class
wenzelm@63977
   909
instances) are generated into companion object of corresponding type
wenzelm@63977
   910
class, to resolve some situations where ambiguities may occur.
wenzelm@63977
   911
wenzelm@64390
   912
* Solve direct: option "solve_direct_strict_warnings" gives explicit
wenzelm@64390
   913
warnings for lemma statements with trivial proofs.
haftmann@64013
   914
wenzelm@64602
   915
wenzelm@62904
   916
*** Prover IDE -- Isabelle/Scala/jEdit ***
wenzelm@62904
   917
wenzelm@64527
   918
* More aggressive flushing of machine-generated input, according to
wenzelm@64527
   919
system option editor_generated_input_delay (in addition to existing
wenzelm@64527
   920
editor_input_delay for regular user edits). This may affect overall PIDE
wenzelm@64527
   921
reactivity and CPU usage.
wenzelm@64527
   922
wenzelm@64390
   923
* Syntactic indentation according to Isabelle outer syntax. Action
wenzelm@64390
   924
"indent-lines" (shortcut C+i) indents the current line according to
wenzelm@64390
   925
command keywords and some command substructure. Action
wenzelm@64390
   926
"isabelle.newline" (shortcut ENTER) indents the old and the new line
wenzelm@64390
   927
according to command keywords only; see also option
wenzelm@64390
   928
"jedit_indent_newline".
wenzelm@64390
   929
wenzelm@64390
   930
* Semantic indentation for unstructured proof scripts ('apply' etc.) via
wenzelm@64390
   931
number of subgoals. This requires information of ongoing document
wenzelm@64390
   932
processing and may thus lag behind, when the user is editing too
wenzelm@64390
   933
quickly; see also option "jedit_script_indent" and
wenzelm@64390
   934
"jedit_script_indent_limit".
wenzelm@64390
   935
wenzelm@64390
   936
* Refined folding mode "isabelle" based on Isar syntax: 'next' and 'qed'
wenzelm@64390
   937
are treated as delimiters for fold structure; 'begin' and 'end'
wenzelm@64390
   938
structure of theory specifications is treated as well.
wenzelm@64390
   939
wenzelm@64390
   940
* Command 'proof' provides information about proof outline with cases,
wenzelm@64390
   941
e.g. for proof methods "cases", "induct", "goal_cases".
wenzelm@64390
   942
wenzelm@64390
   943
* Completion templates for commands involving "begin ... end" blocks,
wenzelm@64390
   944
e.g. 'context', 'notepad'.
wenzelm@64390
   945
wenzelm@64390
   946
* Sidekick parser "isabelle-context" shows nesting of context blocks
wenzelm@64390
   947
according to 'begin' and 'end' structure.
wenzelm@64390
   948
wenzelm@63977
   949
* Highlighting of entity def/ref positions wrt. cursor.
wenzelm@63977
   950
wenzelm@63977
   951
* Action "isabelle.select-entity" (shortcut CS+ENTER) selects all
wenzelm@64514
   952
occurrences of the formal entity at the caret position. This facilitates
wenzelm@63977
   953
systematic renaming.
wenzelm@63977
   954
wenzelm@63977
   955
* PIDE document markup works across multiple Isar commands, e.g. the
wenzelm@63977
   956
results established at the end of a proof are properly identified in the
wenzelm@63977
   957
theorem statement.
wenzelm@63977
   958
wenzelm@63977
   959
* Cartouche abbreviations work both for " and ` to accomodate typical
wenzelm@63977
   960
situations where old ASCII notation may be updated.
wenzelm@63977
   961
wenzelm@63875
   962
* Dockable window "Symbols" also provides access to 'abbrevs' from the
wenzelm@63875
   963
outer syntax of the current theory buffer. This provides clickable
wenzelm@63875
   964
syntax templates, including entries with empty abbrevs name (which are
wenzelm@63875
   965
inaccessible via keyboard completion).
wenzelm@63875
   966
wenzelm@63022
   967
* IDE support for the Isabelle/Pure bootstrap process, with the
wenzelm@63022
   968
following independent stages:
wenzelm@63022
   969
wenzelm@63022
   970
  src/Pure/ROOT0.ML
wenzelm@63022
   971
  src/Pure/ROOT.ML
wenzelm@63022
   972
  src/Pure/Pure.thy
wenzelm@63022
   973
  src/Pure/ML_Bootstrap.thy
wenzelm@63022
   974
wenzelm@63022
   975
The ML ROOT files act like quasi-theories in the context of theory
wenzelm@63022
   976
ML_Bootstrap: this allows continuous checking of all loaded ML files.
wenzelm@63022
   977
The theory files are presented with a modified header to import Pure
wenzelm@63022
   978
from the running Isabelle instance. Results from changed versions of
wenzelm@63022
   979
each stage are *not* propagated to the next stage, and isolated from the
wenzelm@63022
   980
actual Isabelle/Pure that runs the IDE itself. The sequential
wenzelm@63307
   981
dependencies of the above files are only observed for batch build.
wenzelm@62904
   982
wenzelm@63977
   983
* Isabelle/ML and Standard ML files are presented in Sidekick with the
wenzelm@63977
   984
tree structure of section headings: this special comment format is
wenzelm@63977
   985
described in "implementation" chapter 0, e.g. (*** section ***).
wenzelm@63461
   986
wenzelm@63581
   987
* Additional abbreviations for syntactic completion may be specified
wenzelm@63871
   988
within the theory header as 'abbrevs'. The theory syntax for 'keywords'
wenzelm@63871
   989
has been simplified accordingly: optional abbrevs need to go into the
wenzelm@63871
   990
new 'abbrevs' section.
wenzelm@63871
   991
wenzelm@63871
   992
* Global abbreviations via $ISABELLE_HOME/etc/abbrevs and
wenzelm@63871
   993
$ISABELLE_HOME_USER/etc/abbrevs are no longer supported. Minor
wenzelm@63871
   994
INCOMPATIBILITY, use 'abbrevs' within theory header instead.
wenzelm@63579
   995
wenzelm@64390
   996
* Action "isabelle.keymap-merge" asks the user to resolve pending
wenzelm@64390
   997
Isabelle keymap changes that are in conflict with the current jEdit
wenzelm@64390
   998
keymap; non-conflicting changes are always applied implicitly. This
wenzelm@64390
   999
action is automatically invoked on Isabelle/jEdit startup and thus
wenzelm@64390
  1000
increases chances that users see new keyboard shortcuts when re-using
wenzelm@64390
  1001
old keymaps.
wenzelm@64390
  1002
wenzelm@63675
  1003
* ML and document antiquotations for file-systems paths are more uniform
wenzelm@63675
  1004
and diverse:
wenzelm@63675
  1005
wenzelm@63675
  1006
  @{path NAME}   -- no file-system check
wenzelm@63675
  1007
  @{file NAME}   -- check for plain file
wenzelm@63675
  1008
  @{dir NAME}    -- check for directory
wenzelm@63675
  1009
wenzelm@63675
  1010
Minor INCOMPATIBILITY, former uses of @{file} and @{file_unchecked} may
wenzelm@63675
  1011
have to be changed.
wenzelm@63669
  1012
wenzelm@63669
  1013
wenzelm@63977
  1014
*** Document preparation ***
wenzelm@63977
  1015
wenzelm@63977
  1016
* New symbol \<circle>, e.g. for temporal operator.
wenzelm@63977
  1017
wenzelm@64073
  1018
* New document and ML antiquotation @{locale} for locales, similar to
wenzelm@64073
  1019
existing antiquotation @{class}.
wenzelm@64073
  1020
wenzelm@63977
  1021
* Mixfix annotations support delimiters like \<^control>\<open>cartouche\<close> --
wenzelm@63977
  1022
this allows special forms of document output.
wenzelm@63977
  1023
wenzelm@63977
  1024
* Raw LaTeX output now works via \<^latex>\<open>...\<close> instead of raw control
wenzelm@63977
  1025
symbol \<^raw:...>. INCOMPATIBILITY, notably for LaTeXsugar.thy and its
wenzelm@63977
  1026
derivatives.
wenzelm@63977
  1027
wenzelm@63977
  1028
* \<^raw:...> symbols are no longer supported.
wenzelm@63977
  1029
wenzelm@63977
  1030
* Old 'header' command is no longer supported (legacy since
wenzelm@63977
  1031
Isabelle2015).
wenzelm@63977
  1032
wenzelm@63977
  1033
wenzelm@62312
  1034
*** Isar ***
wenzelm@62312
  1035
wenzelm@63180
  1036
* Many specification elements support structured statements with 'if' /
wenzelm@63180
  1037
'for' eigen-context, e.g. 'axiomatization', 'abbreviation',
wenzelm@63180
  1038
'definition', 'inductive', 'function'.
wenzelm@63180
  1039
wenzelm@63094
  1040
* Toplevel theorem statements support eigen-context notation with 'if' /
wenzelm@63284
  1041
'for' (in postfix), which corresponds to 'assumes' / 'fixes' in the
wenzelm@63094
  1042
traditional long statement form (in prefix). Local premises are called
wenzelm@63094
  1043
"that" or "assms", respectively. Empty premises are *not* bound in the
wenzelm@63094
  1044
context: INCOMPATIBILITY.
wenzelm@63094
  1045
wenzelm@63039
  1046
* Command 'define' introduces a local (non-polymorphic) definition, with
wenzelm@63039
  1047
optional abstraction over local parameters. The syntax resembles
wenzelm@63043
  1048
'definition' and 'obtain'. It fits better into the Isar language than
wenzelm@63043
  1049
old 'def', which is now a legacy feature.
wenzelm@63039
  1050
wenzelm@63059
  1051
* Command 'obtain' supports structured statements with 'if' / 'for'
wenzelm@63059
  1052
context.
wenzelm@63059
  1053
wenzelm@62312
  1054
* Command '\<proof>' is an alias for 'sorry', with different
wenzelm@62312
  1055
typesetting. E.g. to produce proof holes in examples and documentation.
wenzelm@62216
  1056
wenzelm@63977
  1057
* The defining position of a literal fact \<open>prop\<close> is maintained more
wenzelm@63977
  1058
carefully, and made accessible as hyperlink in the Prover IDE.
wenzelm@63977
  1059
wenzelm@63977
  1060
* Commands 'finally' and 'ultimately' used to expose the result as
wenzelm@63977
  1061
literal fact: this accidental behaviour has been discontinued. Rare
wenzelm@63977
  1062
INCOMPATIBILITY, use more explicit means to refer to facts in Isar.
wenzelm@63977
  1063
wenzelm@63977
  1064
* Command 'axiomatization' has become more restrictive to correspond
wenzelm@63977
  1065
better to internal axioms as singleton facts with mandatory name. Minor
wenzelm@63977
  1066
INCOMPATIBILITY.
wenzelm@62939
  1067
wenzelm@63259
  1068
* Proof methods may refer to the main facts via the dynamic fact
wenzelm@63259
  1069
"method_facts". This is particularly useful for Eisbach method
wenzelm@63259
  1070
definitions.
wenzelm@63259
  1071
wenzelm@63527
  1072
* Proof method "use" allows to modify the main facts of a given method
wenzelm@63527
  1073
expression, e.g.
wenzelm@63259
  1074
wenzelm@63259
  1075
  (use facts in simp)
wenzelm@63259
  1076
  (use facts in \<open>simp add: ...\<close>)
wenzelm@63259
  1077
wenzelm@63977
  1078
* The old proof method "default" has been removed (legacy since
wenzelm@63977
  1079
Isabelle2016). INCOMPATIBILITY, use "standard" instead.
wenzelm@63977
  1080
wenzelm@62216
  1081
haftmann@63165
  1082
*** Pure ***
haftmann@63165
  1083
wenzelm@63977
  1084
* Pure provides basic versions of proof methods "simp" and "simp_all"
wenzelm@63977
  1085
that only know about meta-equality (==). Potential INCOMPATIBILITY in
wenzelm@63977
  1086
theory imports that merge Pure with e.g. Main of Isabelle/HOL: the order
wenzelm@63977
  1087
is relevant to avoid confusion of Pure.simp vs. HOL.simp.
wenzelm@63977
  1088
wenzelm@63977
  1089
* The command 'unfolding' and proof method "unfold" include a second
wenzelm@63977
  1090
stage where given equations are passed through the attribute "abs_def"
wenzelm@63977
  1091
before rewriting. This ensures that definitions are fully expanded,
wenzelm@63977
  1092
regardless of the actual parameters that are provided. Rare
wenzelm@63977
  1093
INCOMPATIBILITY in some corner cases: use proof method (simp only:)
wenzelm@63977
  1094
instead, or declare [[unfold_abs_def = false]] in the proof context.
wenzelm@63977
  1095
wenzelm@63977
  1096
* Type-inference improves sorts of newly introduced type variables for
wenzelm@63977
  1097
the object-logic, using its base sort (i.e. HOL.type for Isabelle/HOL).
wenzelm@63977
  1098
Thus terms like "f x" or "\<And>x. P x" without any further syntactic context
wenzelm@63977
  1099
produce x::'a::type in HOL instead of x::'a::{} in Pure. Rare
wenzelm@63977
  1100
INCOMPATIBILITY, need to provide explicit type constraints for Pure
wenzelm@63977
  1101
types where this is really intended.
haftmann@63350
  1102
haftmann@63165
  1103
blanchet@62327
  1104
*** HOL ***
blanchet@62327
  1105
wenzelm@63977
  1106
* New proof method "argo" using the built-in Argo solver based on SMT
wenzelm@63977
  1107
technology. The method can be used to prove goals of quantifier-free
wenzelm@63977
  1108
propositional logic, goals based on a combination of quantifier-free
wenzelm@63977
  1109
propositional logic with equality, and goals based on a combination of
wenzelm@63977
  1110
quantifier-free propositional logic with linear real arithmetic
wenzelm@63977
  1111
including min/max/abs. See HOL/ex/Argo_Examples.thy for examples.
wenzelm@63977
  1112
blanchet@66614
  1113
* The new "nunchaku" command integrates the Nunchaku model finder. The
wenzelm@64390
  1114
tool is experimental. See ~~/src/HOL/Nunchaku/Nunchaku.thy for details.
wenzelm@64390
  1115
wenzelm@63977
  1116
* Metis: The problem encoding has changed very slightly. This might
blanchet@63785
  1117
break existing proofs. INCOMPATIBILITY.
blanchet@63785
  1118
blanchet@63116
  1119
* Sledgehammer:
lp15@63967
  1120
  - The MaSh relevance filter is now faster than before.
blanchet@63116
  1121
  - Produce syntactically correct Vampire 4.0 problem files.
blanchet@63116
  1122
blanchet@62327
  1123
* (Co)datatype package:
blanchet@62693
  1124
  - New commands for defining corecursive functions and reasoning about
blanchet@62693
  1125
    them in "~~/src/HOL/Library/BNF_Corec.thy": 'corec', 'corecursive',
blanchet@62693
  1126
    'friend_of_corec', and 'corecursion_upto'; and 'corec_unique' proof
blanchet@62842
  1127
    method. See 'isabelle doc corec'.
wenzelm@63977
  1128
  - The predicator :: ('a \<Rightarrow> bool) \<Rightarrow> 'a F \<Rightarrow> bool is now a first-class
blanchet@63855
  1129
    citizen in bounded natural functors.
blanchet@62693
  1130
  - 'primrec' now allows nested calls through the predicator in addition
blanchet@62327
  1131
    to the map function.
blanchet@63855
  1132
  - 'bnf' automatically discharges reflexive proof obligations.
blanchet@62693
  1133
  - 'bnf' outputs a slightly modified proof obligation expressing rel in
traytel@62332
  1134
       terms of map and set
blanchet@63855
  1135
       (not giving a specification for rel makes this one reflexive).
blanchet@62693
  1136
  - 'bnf' outputs a new proof obligation expressing pred in terms of set
blanchet@63855
  1137
       (not giving a specification for pred makes this one reflexive).
blanchet@63855
  1138
    INCOMPATIBILITY: manual 'bnf' declarations may need adjustment.
blanchet@62335
  1139
  - Renamed lemmas:
blanchet@62335
  1140
      rel_prod_apply ~> rel_prod_inject
blanchet@62335
  1141
      pred_prod_apply ~> pred_prod_inject
blanchet@62335
  1142
    INCOMPATIBILITY.
blanchet@62536
  1143
  - The "size" plugin has been made compatible again with locales.
blanchet@63855
  1144
  - The theorems about "rel" and "set" may have a slightly different (but
blanchet@63855
  1145
    equivalent) form.
blanchet@63855
  1146
    INCOMPATIBILITY.
blanchet@62327
  1147
wenzelm@63977
  1148
* The 'coinductive' command produces a proper coinduction rule for
wenzelm@63977
  1149
mutual coinductive predicates. This new rule replaces the old rule,
wenzelm@63977
  1150
which exposed details of the internal fixpoint construction and was
wenzelm@63977
  1151
hard to use. INCOMPATIBILITY.
wenzelm@63977
  1152
wenzelm@63977
  1153
* New abbreviations for negated existence (but not bounded existence):
wenzelm@63977
  1154
wenzelm@63977
  1155
  \<nexists>x. P x \<equiv> \<not> (\<exists>x. P x)
wenzelm@63977
  1156
  \<nexists>!x. P x \<equiv> \<not> (\<exists>!x. P x)
wenzelm@63977
  1157
wenzelm@63977
  1158
* The print mode "HOL" for ASCII syntax of binders "!", "?", "?!", "@"
wenzelm@63977
  1159
has been removed for output. It is retained for input only, until it is
wenzelm@63977
  1160
eliminated altogether.
wenzelm@63977
  1161
wenzelm@63977
  1162
* The unique existence quantifier no longer provides 'binder' syntax,
wenzelm@63977
  1163
but uses syntax translations (as for bounded unique existence). Thus
wenzelm@63977
  1164
iterated quantification \<exists>!x y. P x y with its slightly confusing
wenzelm@63977
  1165
sequential meaning \<exists>!x. \<exists>!y. P x y is no longer possible. Instead,
wenzelm@63977
  1166
pattern abstraction admits simultaneous unique existence \<exists>!(x, y). P x y
wenzelm@63977
  1167
(analogous to existing notation \<exists>!(x, y)\<in>A. P x y). Potential
wenzelm@63977
  1168
INCOMPATIBILITY in rare situations.
wenzelm@63977
  1169
wenzelm@63977
  1170
* Conventional syntax "%(). t" for unit abstractions. Slight syntactic
wenzelm@63977
  1171
INCOMPATIBILITY.
wenzelm@63977
  1172
wenzelm@64390
  1173
* Renamed constants and corresponding theorems:
wenzelm@64390
  1174
wenzelm@64390
  1175
    setsum ~> sum
wenzelm@64390
  1176
    setprod ~> prod
wenzelm@64390
  1177
    listsum ~> sum_list
wenzelm@64390
  1178
    listprod ~> prod_list
wenzelm@64390
  1179
wenzelm@64390
  1180
INCOMPATIBILITY.
wenzelm@64390
  1181
wenzelm@64390
  1182
* Sligthly more standardized theorem names:
wenzelm@64390
  1183
    sgn_times ~> sgn_mult
wenzelm@64390
  1184
    sgn_mult' ~> Real_Vector_Spaces.sgn_mult
wenzelm@64390
  1185
    divide_zero_left ~> div_0
wenzelm@64390
  1186
    zero_mod_left ~> mod_0
wenzelm@64390
  1187
    divide_zero ~> div_by_0
wenzelm@64390
  1188
    divide_1 ~> div_by_1
wenzelm@64390
  1189
    nonzero_mult_divide_cancel_left ~> nonzero_mult_div_cancel_left
wenzelm@64390
  1190
    div_mult_self1_is_id ~> nonzero_mult_div_cancel_left
wenzelm@64390
  1191
    nonzero_mult_divide_cancel_right ~> nonzero_mult_div_cancel_right
wenzelm@64390
  1192
    div_mult_self2_is_id ~> nonzero_mult_div_cancel_right
wenzelm@64390
  1193
    is_unit_divide_mult_cancel_left ~> is_unit_div_mult_cancel_left
wenzelm@64390
  1194
    is_unit_divide_mult_cancel_right ~> is_unit_div_mult_cancel_right
wenzelm@64390
  1195
    mod_div_equality ~> div_mult_mod_eq
wenzelm@64390
  1196
    mod_div_equality2 ~> mult_div_mod_eq
wenzelm@64390
  1197
    mod_div_equality3 ~> mod_div_mult_eq
wenzelm@64390
  1198
    mod_div_equality4 ~> mod_mult_div_eq
wenzelm@64390
  1199
    minus_div_eq_mod ~> minus_div_mult_eq_mod
wenzelm@64390
  1200
    minus_div_eq_mod2 ~> minus_mult_div_eq_mod
wenzelm@64390
  1201
    minus_mod_eq_div ~> minus_mod_eq_div_mult
wenzelm@64390
  1202
    minus_mod_eq_div2 ~> minus_mod_eq_mult_div
wenzelm@64390
  1203
    div_mod_equality' ~> minus_mod_eq_div_mult [symmetric]
wenzelm@64390
  1204
    mod_div_equality' ~> minus_div_mult_eq_mod [symmetric]
wenzelm@64390
  1205
    zmod_zdiv_equality ~> mult_div_mod_eq [symmetric]
wenzelm@64390
  1206
    zmod_zdiv_equality' ~> minus_div_mult_eq_mod [symmetric]
wenzelm@64390
  1207
    Divides.mult_div_cancel ~> minus_mod_eq_mult_div [symmetric]
wenzelm@64390
  1208
    mult_div_cancel ~> minus_mod_eq_mult_div [symmetric]
wenzelm@64390
  1209
    zmult_div_cancel ~> minus_mod_eq_mult_div [symmetric]
wenzelm@64390
  1210
    div_1 ~> div_by_Suc_0
wenzelm@64390
  1211
    mod_1 ~> mod_by_Suc_0
wenzelm@64390
  1212
INCOMPATIBILITY.
wenzelm@64390
  1213
wenzelm@64390
  1214
* New type class "idom_abs_sgn" specifies algebraic properties
wenzelm@64390
  1215
of sign and absolute value functions.  Type class "sgn_if" has
wenzelm@64390
  1216
disappeared.  Slight INCOMPATIBILITY.
wenzelm@64390
  1217
wenzelm@64390
  1218
* Dedicated syntax LENGTH('a) for length of types.
wenzelm@64390
  1219
wenzelm@63977
  1220
* Characters (type char) are modelled as finite algebraic type
wenzelm@63977
  1221
corresponding to {0..255}.
wenzelm@63977
  1222
wenzelm@63977
  1223
  - Logical representation:
wenzelm@63977
  1224
    * 0 is instantiated to the ASCII zero character.
wenzelm@63977
  1225
    * All other characters are represented as "Char n"
wenzelm@63977
  1226
      with n being a raw numeral expression less than 256.
wenzelm@63977
  1227
    * Expressions of the form "Char n" with n greater than 255
wenzelm@63977
  1228
      are non-canonical.
wenzelm@63977
  1229
  - Printing and parsing:
wenzelm@63977
  1230
    * Printable characters are printed and parsed as "CHR ''\<dots>''"
wenzelm@63977
  1231
      (as before).
wenzelm@63977
  1232
    * The ASCII zero character is printed and parsed as "0".
wenzelm@63977
  1233
    * All other canonical characters are printed as "CHR 0xXX"
wenzelm@63977
  1234
      with XX being the hexadecimal character code.  "CHR n"
wenzelm@63977
  1235
      is parsable for every numeral expression n.
wenzelm@63977
  1236
    * Non-canonical characters have no special syntax and are
wenzelm@63977
  1237
      printed as their logical representation.
wenzelm@63977
  1238
  - Explicit conversions from and to the natural numbers are
wenzelm@63977
  1239
    provided as char_of_nat, nat_of_char (as before).
wenzelm@63977
  1240
  - The auxiliary nibble type has been discontinued.
wenzelm@63977
  1241
wenzelm@63977
  1242
INCOMPATIBILITY.
wenzelm@63977
  1243
wenzelm@63977
  1244
* Type class "div" with operation "mod" renamed to type class "modulo"
wenzelm@63977
  1245
with operation "modulo", analogously to type class "divide". This
wenzelm@63977
  1246
eliminates the need to qualify any of those names in the presence of
wenzelm@63977
  1247
infix "mod" syntax. INCOMPATIBILITY.
wenzelm@63977
  1248
wenzelm@63979
  1249
* Statements and proofs of Knaster-Tarski fixpoint combinators lfp/gfp
wenzelm@63979
  1250
have been clarified. The fixpoint properties are lfp_fixpoint, its
wenzelm@63979
  1251
symmetric lfp_unfold (as before), and the duals for gfp. Auxiliary items
wenzelm@63979
  1252
for the proof (lfp_lemma2 etc.) are no longer exported, but can be
wenzelm@63979
  1253
easily recovered by composition with eq_refl. Minor INCOMPATIBILITY.
wenzelm@63979
  1254
wenzelm@63977
  1255
* Constant "surj" is a mere input abbreviation, to avoid hiding an
wenzelm@63977
  1256
equation in term output. Minor INCOMPATIBILITY.
wenzelm@63977
  1257
wenzelm@63977
  1258
* Command 'code_reflect' accepts empty constructor lists for datatypes,
wenzelm@63977
  1259
which renders those abstract effectively.
wenzelm@63977
  1260
wenzelm@63977
  1261
* Command 'export_code' checks given constants for abstraction
wenzelm@63977
  1262
violations: a small guarantee that given constants specify a safe
wenzelm@63977
  1263
interface for the generated code.
wenzelm@63977
  1264
wenzelm@63977
  1265
* Code generation for Scala: ambiguous implicts in class diagrams are
wenzelm@63977
  1266
spelt out explicitly.
wenzelm@63977
  1267
wenzelm@63977
  1268
* Static evaluators (Code_Evaluation.static_* in Isabelle/ML) rely on
wenzelm@63977
  1269
explicitly provided auxiliary definitions for required type class
wenzelm@64390
  1270
dictionaries rather than half-working magic. INCOMPATIBILITY, see the
wenzelm@64390
  1271
tutorial on code generation for details.
wenzelm@64390
  1272
wenzelm@64390
  1273
* Theory Set_Interval: substantial new theorems on indexed sums and
wenzelm@64390
  1274
products.
wenzelm@63977
  1275
wenzelm@63977
  1276
* Locale bijection establishes convenient default simp rules such as
wenzelm@63977
  1277
"inv f (f a) = a" for total bijections.
wenzelm@63977
  1278
wenzelm@63977
  1279
* Abstract locales semigroup, abel_semigroup, semilattice,
wenzelm@63977
  1280
semilattice_neutr, ordering, ordering_top, semilattice_order,
wenzelm@63977
  1281
semilattice_neutr_order, comm_monoid_set, semilattice_set,
wenzelm@63977
  1282
semilattice_neutr_set, semilattice_order_set,
wenzelm@63977
  1283
semilattice_order_neutr_set monoid_list, comm_monoid_list,
wenzelm@63977
  1284
comm_monoid_list_set, comm_monoid_mset, comm_monoid_fun use boldified
wenzelm@63977
  1285
syntax uniformly that does not clash with corresponding global syntax.
wenzelm@63977
  1286
INCOMPATIBILITY.
wenzelm@63977
  1287
wenzelm@63977
  1288
* Former locale lifting_syntax is now a bundle, which is easier to
wenzelm@63977
  1289
include in a local context or theorem statement, e.g. "context includes
wenzelm@63977
  1290
lifting_syntax begin ... end". Minor INCOMPATIBILITY.
wenzelm@63977
  1291
wenzelm@63807
  1292
* Some old / obsolete theorems have been renamed / removed, potential
wenzelm@63807
  1293
INCOMPATIBILITY.
wenzelm@63807
  1294
wenzelm@63807
  1295
  nat_less_cases  --  removed, use linorder_cases instead
wenzelm@63807
  1296
  inv_image_comp  --  removed, use image_inv_f_f instead
wenzelm@63807
  1297
  image_surj_f_inv_f  ~>  image_f_inv_f
wenzelm@63113
  1298
Mathias@63456
  1299
* Some theorems about groups and orders have been generalised from
Mathias@63456
  1300
  groups to semi-groups that are also monoids:
Mathias@63456
  1301
    le_add_same_cancel1
Mathias@63456
  1302
    le_add_same_cancel2
Mathias@63456
  1303
    less_add_same_cancel1
Mathias@63456
  1304
    less_add_same_cancel2
Mathias@63456
  1305
    add_le_same_cancel1
Mathias@63456
  1306
    add_le_same_cancel2
Mathias@63456
  1307
    add_less_same_cancel1
Mathias@63456
  1308
    add_less_same_cancel2
Mathias@63456
  1309
Mathias@63456
  1310
* Some simplifications theorems about rings have been removed, since
Mathias@63456
  1311
  superseeded by a more general version:
Mathias@63456
  1312
    less_add_cancel_left_greater_zero ~> less_add_same_cancel1
Mathias@63456
  1313
    less_add_cancel_right_greater_zero ~> less_add_same_cancel2
Mathias@63456
  1314
    less_eq_add_cancel_left_greater_eq_zero ~> le_add_same_cancel1
Mathias@63456
  1315
    less_eq_add_cancel_right_greater_eq_zero ~> le_add_same_cancel2
Mathias@63456
  1316
    less_eq_add_cancel_left_less_eq_zero ~> add_le_same_cancel1
Mathias@63456
  1317
    less_eq_add_cancel_right_less_eq_zero ~> add_le_same_cancel2
Mathias@63456
  1318
    less_add_cancel_left_less_zero ~> add_less_same_cancel1
Mathias@63456
  1319
    less_add_cancel_right_less_zero ~> add_less_same_cancel2
Mathias@63456
  1320
INCOMPATIBILITY.
Mathias@63456
  1321
wenzelm@62407
  1322
* Renamed split_if -> if_split and split_if_asm -> if_split_asm to
wenzelm@62407
  1323
resemble the f.split naming convention, INCOMPATIBILITY.
nipkow@62396
  1324
wenzelm@63977
  1325
* Added class topological_monoid.
wenzelm@63977
  1326
wenzelm@64391
  1327
* The following theorems have been renamed:
wenzelm@64391
  1328
nipkow@64457
  1329
  setsum_left_distrib ~> sum_distrib_right
nipkow@64457
  1330
  setsum_right_distrib ~> sum_distrib_left
wenzelm@64391
  1331
wenzelm@64391
  1332
INCOMPATIBILITY.
wenzelm@64391
  1333
wenzelm@64391
  1334
* Compound constants INFIMUM and SUPREMUM are mere abbreviations now.
wenzelm@64391
  1335
INCOMPATIBILITY.
wenzelm@64391
  1336
wenzelm@64391
  1337
* "Gcd (f ` A)" and "Lcm (f ` A)" are printed with optional
wenzelm@64391
  1338
comprehension-like syntax analogously to "Inf (f ` A)" and "Sup (f `
wenzelm@64391
  1339
A)".
wenzelm@64391
  1340
wenzelm@64391
  1341
* Class semiring_Lcd merged into semiring_Gcd. INCOMPATIBILITY.
wenzelm@64391
  1342
wenzelm@64391
  1343
* The type class ordered_comm_monoid_add is now called
wenzelm@64391
  1344
ordered_cancel_comm_monoid_add. A new type class ordered_comm_monoid_add
wenzelm@64391
  1345
is introduced as the combination of ordered_ab_semigroup_add +
wenzelm@64391
  1346
comm_monoid_add. INCOMPATIBILITY.
wenzelm@64391
  1347
wenzelm@64391
  1348
* Introduced the type classes canonically_ordered_comm_monoid_add and
wenzelm@64391
  1349
dioid.
wenzelm@64391
  1350
wenzelm@64391
  1351
* Introduced the type class ordered_ab_semigroup_monoid_add_imp_le. When
wenzelm@64391
  1352
instantiating linordered_semiring_strict and ordered_ab_group_add, an
wenzelm@64391
  1353
explicit instantiation of ordered_ab_semigroup_monoid_add_imp_le might
wenzelm@64391
  1354
be required. INCOMPATIBILITY.
nipkow@63117
  1355
haftmann@62348
  1356
* Dropped various legacy fact bindings, whose replacements are often
haftmann@62348
  1357
of a more general type also:
haftmann@62348
  1358
  lcm_left_commute_nat ~> lcm.left_commute
haftmann@62348
  1359
  lcm_left_commute_int ~> lcm.left_commute
haftmann@62348
  1360
  gcd_left_commute_nat ~> gcd.left_commute
haftmann@62348
  1361
  gcd_left_commute_int ~> gcd.left_commute
haftmann@62348
  1362
  gcd_greatest_iff_nat ~> gcd_greatest_iff
haftmann@62348
  1363
  gcd_greatest_iff_int ~> gcd_greatest_iff
haftmann@62348
  1364
  coprime_dvd_mult_nat ~> coprime_dvd_mult
haftmann@62348
  1365
  coprime_dvd_mult_int ~> coprime_dvd_mult
haftmann@62348
  1366
  zpower_numeral_even ~> power_numeral_even
haftmann@62348
  1367
  gcd_mult_cancel_nat ~> gcd_mult_cancel
haftmann@62348
  1368
  gcd_mult_cancel_int ~> gcd_mult_cancel
haftmann@62348
  1369
  div_gcd_coprime_nat ~> div_gcd_coprime
haftmann@62348
  1370
  div_gcd_coprime_int ~> div_gcd_coprime
haftmann@62348
  1371
  zpower_numeral_odd ~> power_numeral_odd
haftmann@62348
  1372
  zero_less_int_conv ~> of_nat_0_less_iff
haftmann@62348
  1373
  gcd_greatest_nat ~> gcd_greatest
haftmann@62348
  1374
  gcd_greatest_int ~> gcd_greatest
haftmann@62348
  1375
  coprime_mult_nat ~> coprime_mult
haftmann@62348
  1376
  coprime_mult_int ~> coprime_mult
haftmann@62348
  1377
  lcm_commute_nat ~> lcm.commute
haftmann@62348
  1378
  lcm_commute_int ~> lcm.commute
haftmann@62348
  1379
  int_less_0_conv ~> of_nat_less_0_iff
haftmann@62348
  1380
  gcd_commute_nat ~> gcd.commute
haftmann@62348
  1381
  gcd_commute_int ~> gcd.commute
haftmann@62348
  1382
  Gcd_insert_nat ~> Gcd_insert
haftmann@62348
  1383
  Gcd_insert_int ~> Gcd_insert
haftmann@62348
  1384
  of_int_int_eq ~> of_int_of_nat_eq
haftmann@62348
  1385
  lcm_least_nat ~> lcm_least
haftmann@62348
  1386
  lcm_least_int ~> lcm_least
haftmann@62348
  1387
  lcm_assoc_nat ~> lcm.assoc
haftmann@62348
  1388
  lcm_assoc_int ~> lcm.assoc
haftmann@62348
  1389
  int_le_0_conv ~> of_nat_le_0_iff
haftmann@62348
  1390
  int_eq_0_conv ~> of_nat_eq_0_iff
haftmann@62348
  1391
  Gcd_empty_nat ~> Gcd_empty
haftmann@62348
  1392
  Gcd_empty_int ~> Gcd_empty
haftmann@62348
  1393
  gcd_assoc_nat ~> gcd.assoc
haftmann@62348
  1394
  gcd_assoc_int ~> gcd.assoc
haftmann@62348
  1395
  zero_zle_int ~> of_nat_0_le_iff
haftmann@62348
  1396
  lcm_dvd2_nat ~> dvd_lcm2
haftmann@62348
  1397
  lcm_dvd2_int ~> dvd_lcm2
haftmann@62348
  1398
  lcm_dvd1_nat ~> dvd_lcm1
haftmann@62348
  1399
  lcm_dvd1_int ~> dvd_lcm1
haftmann@62348
  1400
  gcd_zero_nat ~> gcd_eq_0_iff
haftmann@62348
  1401
  gcd_zero_int ~> gcd_eq_0_iff
haftmann@62348
  1402
  gcd_dvd2_nat ~> gcd_dvd2
haftmann@62348
  1403
  gcd_dvd2_int ~> gcd_dvd2
haftmann@62348
  1404
  gcd_dvd1_nat ~> gcd_dvd1
haftmann@62348
  1405
  gcd_dvd1_int ~> gcd_dvd1
haftmann@62348
  1406
  int_numeral ~> of_nat_numeral
haftmann@62348
  1407
  lcm_ac_nat ~> ac_simps
haftmann@62348
  1408
  lcm_ac_int ~> ac_simps
haftmann@62348
  1409
  gcd_ac_nat ~> ac_simps
haftmann@62348
  1410
  gcd_ac_int ~> ac_simps
haftmann@62348
  1411
  abs_int_eq ~> abs_of_nat
haftmann@62348
  1412
  zless_int ~> of_nat_less_iff
haftmann@62348
  1413
  zdiff_int ~> of_nat_diff
haftmann@62348
  1414
  zadd_int ~> of_nat_add
haftmann@62348
  1415
  int_mult ~> of_nat_mult
haftmann@62348
  1416
  int_Suc ~> of_nat_Suc
haftmann@62348
  1417
  inj_int ~> inj_of_nat
haftmann@62348
  1418
  int_1 ~> of_nat_1
haftmann@62348
  1419
  int_0 ~> of_nat_0
haftmann@62353
  1420
  Lcm_empty_nat ~> Lcm_empty
haftmann@62353
  1421
  Lcm_empty_int ~> Lcm_empty
haftmann@62353
  1422
  Lcm_insert_nat ~> Lcm_insert
haftmann@62353
  1423
  Lcm_insert_int ~> Lcm_insert
haftmann@62353
  1424
  comp_fun_idem_gcd_nat ~> comp_fun_idem_gcd
haftmann@62353
  1425
  comp_fun_idem_gcd_int ~> comp_fun_idem_gcd
haftmann@62353
  1426
  comp_fun_idem_lcm_nat ~> comp_fun_idem_lcm
haftmann@62353
  1427
  comp_fun_idem_lcm_int ~> comp_fun_idem_lcm
haftmann@62353
  1428
  Lcm_eq_0 ~> Lcm_eq_0_I
haftmann@62353
  1429
  Lcm0_iff ~> Lcm_0_iff
haftmann@62353
  1430
  Lcm_dvd_int ~> Lcm_least
haftmann@62353
  1431
  divides_mult_nat ~> divides_mult
haftmann@62353
  1432
  divides_mult_int ~> divides_mult
haftmann@62353
  1433
  lcm_0_nat ~> lcm_0_right
haftmann@62353
  1434
  lcm_0_int ~> lcm_0_right
haftmann@62353
  1435
  lcm_0_left_nat ~> lcm_0_left
haftmann@62353
  1436
  lcm_0_left_int ~> lcm_0_left
haftmann@62353
  1437
  dvd_gcd_D1_nat ~> dvd_gcdD1
haftmann@62353
  1438
  dvd_gcd_D1_int ~> dvd_gcdD1
haftmann@62353
  1439
  dvd_gcd_D2_nat ~> dvd_gcdD2
haftmann@62353
  1440
  dvd_gcd_D2_int ~> dvd_gcdD2
haftmann@62353
  1441
  coprime_dvd_mult_iff_nat ~> coprime_dvd_mult_iff
haftmann@62353
  1442
  coprime_dvd_mult_iff_int ~> coprime_dvd_mult_iff
haftmann@62348
  1443
  realpow_minus_mult ~> power_minus_mult
haftmann@62348
  1444
  realpow_Suc_le_self ~> power_Suc_le_self
haftmann@62353
  1445
  dvd_Gcd, dvd_Gcd_nat, dvd_Gcd_int removed in favour of Gcd_greatest
haftmann@62347
  1446
INCOMPATIBILITY.
haftmann@62347
  1447
lp15@63967
  1448
* Renamed HOL/Quotient_Examples/FSet.thy to
wenzelm@63977
  1449
HOL/Quotient_Examples/Quotient_FSet.thy INCOMPATIBILITY.
wenzelm@63977
  1450
wenzelm@64390
  1451
* Session HOL-Library: theory FinFun bundles "finfun_syntax" and
wenzelm@64390
  1452
"no_finfun_syntax" allow to control optional syntax in local contexts;
wenzelm@64390
  1453
this supersedes former theory FinFun_Syntax. INCOMPATIBILITY, e.g. use
wenzelm@64390
  1454
"unbundle finfun_syntax" to imitate import of
wenzelm@64390
  1455
"~~/src/HOL/Library/FinFun_Syntax".
wenzelm@64390
  1456
wenzelm@64390
  1457
* Session HOL-Library: theory Multiset_Permutations (executably) defines
wenzelm@64390
  1458
the set of permutations of a given set or multiset, i.e. the set of all
wenzelm@64390
  1459
lists that contain every element of the carrier (multi-)set exactly
wenzelm@64390
  1460
once.
wenzelm@64390
  1461
wenzelm@64390
  1462
* Session HOL-Library: multiset membership is now expressed using
wenzelm@64390
  1463
set_mset rather than count.
wenzelm@64390
  1464
wenzelm@64390
  1465
  - Expressions "count M a > 0" and similar simplify to membership
wenzelm@64390
  1466
    by default.
wenzelm@64390
  1467
wenzelm@64390
  1468
  - Converting between "count M a = 0" and non-membership happens using
wenzelm@64390
  1469
    equations count_eq_zero_iff and not_in_iff.
wenzelm@64390
  1470
wenzelm@64390
  1471
  - Rules count_inI and in_countE obtain facts of the form
wenzelm@64390
  1472
    "count M a = n" from membership.
wenzelm@64390
  1473
wenzelm@64390
  1474
  - Rules count_in_diffI and in_diff_countE obtain facts of the form
wenzelm@64390
  1475
    "count M a = n + count N a" from membership on difference sets.
wenzelm@64390
  1476
wenzelm@64390
  1477
INCOMPATIBILITY.
wenzelm@64390
  1478
wenzelm@64390
  1479
* Session HOL-Library: theory LaTeXsugar uses new-style "dummy_pats" for
wenzelm@64390
  1480
displaying equations in functional programming style --- variables
wenzelm@64390
  1481
present on the left-hand but not on the righ-hand side are replaced by
wenzelm@64390
  1482
underscores.
wenzelm@64390
  1483
wenzelm@64390
  1484
* Session HOL-Library: theory Combinator_PER provides combinator to
wenzelm@64390
  1485
build partial equivalence relations from a predicate and an equivalence
wenzelm@64390
  1486
relation.
wenzelm@64390
  1487
wenzelm@64390
  1488
* Session HOL-Library: theory Perm provides basic facts about almost
wenzelm@64390
  1489
everywhere fix bijections.
wenzelm@64390
  1490
wenzelm@64390
  1491
* Session HOL-Library: theory Normalized_Fraction allows viewing an
wenzelm@64390
  1492
element of a field of fractions as a normalized fraction (i.e. a pair of
wenzelm@64390
  1493
numerator and denominator such that the two are coprime and the
wenzelm@64390
  1494
denominator is normalized wrt. unit factors).
wenzelm@64390
  1495
wenzelm@64390
  1496
* Session HOL-NSA has been renamed to HOL-Nonstandard_Analysis.
wenzelm@64390
  1497
wenzelm@64390
  1498
* Session HOL-Multivariate_Analysis has been renamed to HOL-Analysis.
wenzelm@64390
  1499
wenzelm@64390
  1500
* Session HOL-Analysis: measure theory has been moved here from
wenzelm@64390
  1501
HOL-Probability. When importing HOL-Analysis some theorems need
wenzelm@64390
  1502
additional name spaces prefixes due to name clashes. INCOMPATIBILITY.
wenzelm@64390
  1503
wenzelm@64390
  1504
* Session HOL-Analysis: more complex analysis including Cauchy's
wenzelm@64390
  1505
inequality, Liouville theorem, open mapping theorem, maximum modulus
wenzelm@64390
  1506
principle, Residue theorem, Schwarz Lemma.
wenzelm@64390
  1507
wenzelm@64390
  1508
* Session HOL-Analysis: Theory of polyhedra: faces, extreme points,
wenzelm@64390
  1509
polytopes, and the Krein–Milman Minkowski theorem.
wenzelm@64390
  1510
wenzelm@64390
  1511
* Session HOL-Analysis: Numerous results ported from the HOL Light
wenzelm@64390
  1512
libraries: homeomorphisms, continuous function extensions, invariance of
wenzelm@64390
  1513
domain.
wenzelm@64390
  1514
wenzelm@64390
  1515
* Session HOL-Probability: the type of emeasure and nn_integral was
wenzelm@64390
  1516
changed from ereal to ennreal, INCOMPATIBILITY.
wenzelm@64390
  1517
wenzelm@64390
  1518
  emeasure :: 'a measure \<Rightarrow> 'a set \<Rightarrow> ennreal
wenzelm@64390
  1519
  nn_integral :: 'a measure \<Rightarrow> ('a \<Rightarrow> ennreal) \<Rightarrow> ennreal
wenzelm@64390
  1520
wenzelm@64390
  1521
* Session HOL-Probability: Code generation and QuickCheck for
wenzelm@64390
  1522
Probability Mass Functions.
wenzelm@64390
  1523
wenzelm@64390
  1524
* Session HOL-Probability: theory Random_Permutations contains some
wenzelm@64390
  1525
theory about choosing a permutation of a set uniformly at random and
wenzelm@64390
  1526
folding over a list in random order.
wenzelm@64390
  1527
wenzelm@64390
  1528
* Session HOL-Probability: theory SPMF formalises discrete
wenzelm@64390
  1529
subprobability distributions.
wenzelm@64390
  1530
wenzelm@64390
  1531
* Session HOL-Library: the names of multiset theorems have been
wenzelm@64390
  1532
normalised to distinguish which ordering the theorems are about
wenzelm@64390
  1533
wenzelm@64390
  1534
    mset_less_eqI ~> mset_subset_eqI
wenzelm@64390
  1535
    mset_less_insertD ~> mset_subset_insertD
wenzelm@64390
  1536
    mset_less_eq_count ~> mset_subset_eq_count
wenzelm@64390
  1537
    mset_less_diff_self ~> mset_subset_diff_self
wenzelm@64390
  1538
    mset_le_exists_conv ~> mset_subset_eq_exists_conv
wenzelm@64390
  1539
    mset_le_mono_add_right_cancel ~> mset_subset_eq_mono_add_right_cancel
wenzelm@64390
  1540
    mset_le_mono_add_left_cancel ~> mset_subset_eq_mono_add_left_cancel
wenzelm@64390
  1541
    mset_le_mono_add ~> mset_subset_eq_mono_add
wenzelm@64390
  1542
    mset_le_add_left ~> mset_subset_eq_add_left
wenzelm@64390
  1543
    mset_le_add_right ~> mset_subset_eq_add_right
wenzelm@64390
  1544
    mset_le_single ~> mset_subset_eq_single
wenzelm@64390
  1545
    mset_le_multiset_union_diff_commute ~> mset_subset_eq_multiset_union_diff_commute
wenzelm@64390
  1546
    diff_le_self ~> diff_subset_eq_self
wenzelm@64390
  1547
    mset_leD ~> mset_subset_eqD
wenzelm@64390
  1548
    mset_lessD ~> mset_subsetD
wenzelm@64390
  1549
    mset_le_insertD ~> mset_subset_eq_insertD
wenzelm@64390
  1550
    mset_less_of_empty ~> mset_subset_of_empty
wenzelm@64390
  1551
    mset_less_size ~> mset_subset_size
wenzelm@64390
  1552
    wf_less_mset_rel ~> wf_subset_mset_rel
wenzelm@64390
  1553
    count_le_replicate_mset_le ~> count_le_replicate_mset_subset_eq
wenzelm@64390
  1554
    mset_remdups_le ~> mset_remdups_subset_eq
wenzelm@64390
  1555
    ms_lesseq_impl ~> subset_eq_mset_impl
wenzelm@64390
  1556
wenzelm@64390
  1557
Some functions have been renamed:
wenzelm@64390
  1558
    ms_lesseq_impl -> subset_eq_mset_impl
wenzelm@64390
  1559
wenzelm@64390
  1560
* HOL-Library: multisets are now ordered with the multiset ordering
wenzelm@64390
  1561
    #\<subseteq># ~> \<le>
wenzelm@64390
  1562
    #\<subset># ~> <
wenzelm@64390
  1563
    le_multiset ~> less_eq_multiset
wenzelm@64390
  1564
    less_multiset ~> le_multiset
wenzelm@64390
  1565
INCOMPATIBILITY.
wenzelm@64390
  1566
wenzelm@64390
  1567
* Session HOL-Library: the prefix multiset_order has been discontinued:
wenzelm@64390
  1568
the theorems can be directly accessed. As a consequence, the lemmas
wenzelm@64390
  1569
"order_multiset" and "linorder_multiset" have been discontinued, and the
wenzelm@64390
  1570
interpretations "multiset_linorder" and "multiset_wellorder" have been
wenzelm@64390
  1571
replaced by instantiations. INCOMPATIBILITY.
wenzelm@64390
  1572
wenzelm@64390
  1573
* Session HOL-Library: some theorems about the multiset ordering have
wenzelm@64390
  1574
been renamed:
wenzelm@64390
  1575
wenzelm@64390
  1576
    le_multiset_def ~> less_eq_multiset_def
wenzelm@64390
  1577
    less_multiset_def ~> le_multiset_def
wenzelm@64390
  1578
    less_eq_imp_le_multiset ~> subset_eq_imp_le_multiset
wenzelm@64390
  1579
    mult_less_not_refl ~> mset_le_not_refl
wenzelm@64390
  1580
    mult_less_trans ~> mset_le_trans
wenzelm@64390
  1581
    mult_less_not_sym ~> mset_le_not_sym
wenzelm@64390
  1582
    mult_less_asym ~> mset_le_asym
wenzelm@64390
  1583
    mult_less_irrefl ~> mset_le_irrefl
wenzelm@64390
  1584
    union_less_mono2{,1,2} ~> union_le_mono2{,1,2}
wenzelm@64390
  1585
wenzelm@64390
  1586
    le_multiset\<^sub>H\<^sub>O ~> less_eq_multiset\<^sub>H\<^sub>O
wenzelm@64390
  1587
    le_multiset_total ~> less_eq_multiset_total
wenzelm@64390
  1588
    less_multiset_right_total ~> subset_eq_imp_le_multiset
wenzelm@64390
  1589
    le_multiset_empty_left ~> less_eq_multiset_empty_left
wenzelm@64390
  1590
    le_multiset_empty_right ~> less_eq_multiset_empty_right
wenzelm@64390
  1591
    less_multiset_empty_right ~> le_multiset_empty_left
wenzelm@64390
  1592
    less_multiset_empty_left ~> le_multiset_empty_right
wenzelm@64390
  1593
    union_less_diff_plus ~> union_le_diff_plus
wenzelm@64390
  1594
    ex_gt_count_imp_less_multiset ~> ex_gt_count_imp_le_multiset
wenzelm@64390
  1595
    less_multiset_plus_left_nonempty ~> le_multiset_plus_left_nonempty
wenzelm@64390
  1596
    le_multiset_plus_right_nonempty ~> le_multiset_plus_right_nonempty
wenzelm@64390
  1597
INCOMPATIBILITY.
wenzelm@64390
  1598
wenzelm@64390
  1599
* Session HOL-Library: the lemma mset_map has now the attribute [simp].
wenzelm@64390
  1600
INCOMPATIBILITY.
wenzelm@64390
  1601
wenzelm@64390
  1602
* Session HOL-Library: some theorems about multisets have been removed.
wenzelm@64390
  1603
INCOMPATIBILITY, use the following replacements:
wenzelm@64390
  1604
wenzelm@64390
  1605
    le_multiset_plus_plus_left_iff ~> add_less_cancel_right
wenzelm@64390
  1606
    less_multiset_plus_plus_left_iff ~> add_less_cancel_right
wenzelm@64390
  1607
    le_multiset_plus_plus_right_iff ~> add_less_cancel_left
wenzelm@64390
  1608
    less_multiset_plus_plus_right_iff ~> add_less_cancel_left
wenzelm@64390
  1609
    add_eq_self_empty_iff ~> add_cancel_left_right
wenzelm@64390
  1610
    mset_subset_add_bothsides ~> subset_mset.add_less_cancel_right
wenzelm@64390
  1611
    mset_less_add_bothsides ~> subset_mset.add_less_cancel_right
wenzelm@64390
  1612
    mset_le_add_bothsides ~> subset_mset.add_less_cancel_right
wenzelm@64390
  1613
    empty_inter ~> subset_mset.inf_bot_left
wenzelm@64390
  1614
    inter_empty ~> subset_mset.inf_bot_right
wenzelm@64390
  1615
    empty_sup ~> subset_mset.sup_bot_left
wenzelm@64390
  1616
    sup_empty ~> subset_mset.sup_bot_right
wenzelm@64390
  1617
    bdd_below_multiset ~> subset_mset.bdd_above_bot
wenzelm@64390
  1618
    subset_eq_empty ~> subset_mset.le_zero_eq
wenzelm@64390
  1619
    le_empty ~> subset_mset.le_zero_eq
wenzelm@64390
  1620
    mset_subset_empty_nonempty ~> subset_mset.zero_less_iff_neq_zero
wenzelm@64390
  1621
    mset_less_empty_nonempty ~> subset_mset.zero_less_iff_neq_zero
wenzelm@64390
  1622
wenzelm@64390
  1623
* Session HOL-Library: some typeclass constraints about multisets have
wenzelm@64390
  1624
been reduced from ordered or linordered to preorder. Multisets have the
wenzelm@64390
  1625
additional typeclasses order_bot, no_top,
wenzelm@64390
  1626
ordered_ab_semigroup_add_imp_le, ordered_cancel_comm_monoid_add,
wenzelm@64390
  1627
linordered_cancel_ab_semigroup_add, and
wenzelm@64390
  1628
ordered_ab_semigroup_monoid_add_imp_le. INCOMPATIBILITY.
wenzelm@64390
  1629
wenzelm@64390
  1630
* Session HOL-Library: there are some new simplification rules about
wenzelm@64390
  1631
multisets, the multiset ordering, and the subset ordering on multisets.
wenzelm@64390
  1632
INCOMPATIBILITY.
wenzelm@64390
  1633
wenzelm@64390
  1634
* Session HOL-Library: the subset ordering on multisets has now the
wenzelm@64390
  1635
interpretations ordered_ab_semigroup_monoid_add_imp_le and
wenzelm@64390
  1636
bounded_lattice_bot. INCOMPATIBILITY.
wenzelm@64390
  1637
wenzelm@64390
  1638
* Session HOL-Library, theory Multiset: single has been removed in favor
wenzelm@64390
  1639
of add_mset that roughly corresponds to Set.insert. Some theorems have
wenzelm@64390
  1640
removed or changed:
wenzelm@64390
  1641
wenzelm@64390
  1642
  single_not_empty ~> add_mset_not_empty or empty_not_add_mset
wenzelm@64390
  1643
  fold_mset_insert ~> fold_mset_add_mset
wenzelm@64390
  1644
  image_mset_insert ~> image_mset_add_mset
wenzelm@64390
  1645
  union_single_eq_diff
wenzelm@64390
  1646
  multi_self_add_other_not_self
wenzelm@64390
  1647
  diff_single_eq_union
wenzelm@64390
  1648
INCOMPATIBILITY.
wenzelm@64390
  1649
wenzelm@64390
  1650
* Session HOL-Library, theory Multiset: some theorems have been changed
wenzelm@64390
  1651
to use add_mset instead of single:
wenzelm@64390
  1652
wenzelm@64390
  1653
  mset_add
wenzelm@64390
  1654
  multi_self_add_other_not_self
wenzelm@64390
  1655
  diff_single_eq_union
wenzelm@64390
  1656
  union_single_eq_diff
wenzelm@64390
  1657
  union_single_eq_member
wenzelm@64390
  1658
  add_eq_conv_diff
wenzelm@64390
  1659
  insert_noteq_member
wenzelm@64390
  1660
  add_eq_conv_ex
wenzelm@64390
  1661
  multi_member_split
wenzelm@64390
  1662
  multiset_add_sub_el_shuffle
wenzelm@64390
  1663
  mset_subset_eq_insertD
wenzelm@64390
  1664
  mset_subset_insertD
wenzelm@64390
  1665
  insert_subset_eq_iff
wenzelm@64390
  1666
  insert_union_subset_iff
wenzelm@64390
  1667
  multi_psub_of_add_self
wenzelm@64390
  1668
  inter_add_left1
wenzelm@64390
  1669
  inter_add_left2
wenzelm@64390
  1670
  inter_add_right1
wenzelm@64390
  1671
  inter_add_right2
wenzelm@64390
  1672
  sup_union_left1
wenzelm@64390
  1673
  sup_union_left2
wenzelm@64390
  1674
  sup_union_right1
wenzelm@64390
  1675
  sup_union_right2
wenzelm@64390
  1676
  size_eq_Suc_imp_eq_union
wenzelm@64390
  1677
  multi_nonempty_split
wenzelm@64390
  1678
  mset_insort
wenzelm@64390
  1679
  mset_update
wenzelm@64390
  1680
  mult1I
wenzelm@64390
  1681
  less_add
wenzelm@64390
  1682
  mset_zip_take_Cons_drop_twice
wenzelm@64390
  1683
  rel_mset_Zero
wenzelm@64390
  1684
  msed_map_invL
wenzelm@64390
  1685
  msed_map_invR
wenzelm@64390
  1686
  msed_rel_invL
wenzelm@64390
  1687
  msed_rel_invR
wenzelm@64390
  1688
  le_multiset_right_total
wenzelm@64390
  1689
  multiset_induct
wenzelm@64390
  1690
  multiset_induct2_size
wenzelm@64390
  1691
  multiset_induct2
wenzelm@64390
  1692
INCOMPATIBILITY.
wenzelm@64390
  1693
wenzelm@64390
  1694
* Session HOL-Library, theory Multiset: the definitions of some
wenzelm@64390
  1695
constants have changed to use add_mset instead of adding a single
wenzelm@64390
  1696
element:
wenzelm@64390
  1697
wenzelm@64390
  1698
  image_mset
wenzelm@64390
  1699
  mset
wenzelm@64390
  1700
  replicate_mset
wenzelm@64390
  1701
  mult1
wenzelm@64390
  1702
  pred_mset
wenzelm@64390
  1703
  rel_mset'
wenzelm@64390
  1704
  mset_insort
wenzelm@64390
  1705
wenzelm@64390
  1706
INCOMPATIBILITY.
wenzelm@64390
  1707
wenzelm@64390
  1708
* Session HOL-Library, theory Multiset: due to the above changes, the
wenzelm@64390
  1709
attributes of some multiset theorems have been changed:
wenzelm@64390
  1710
wenzelm@64390
  1711
  insert_DiffM  [] ~> [simp]
wenzelm@64390
  1712
  insert_DiffM2 [simp] ~> []
wenzelm@64390
  1713
  diff_add_mset_swap [simp]
wenzelm@64390
  1714
  fold_mset_add_mset [simp]
wenzelm@64390
  1715
  diff_diff_add [simp] (for multisets only)
wenzelm@64390
  1716
  diff_cancel [simp] ~> []
wenzelm@64390
  1717
  count_single [simp] ~> []
wenzelm@64390
  1718
  set_mset_single [simp] ~> []
wenzelm@64390
  1719
  size_multiset_single [simp] ~> []
wenzelm@64390
  1720
  size_single [simp] ~> []
wenzelm@64390
  1721
  image_mset_single [simp] ~> []
wenzelm@64390
  1722
  mset_subset_eq_mono_add_right_cancel [simp] ~> []
wenzelm@64390
  1723
  mset_subset_eq_mono_add_left_cancel [simp] ~> []
wenzelm@64390
  1724
  fold_mset_single [simp] ~> []
wenzelm@64390
  1725
  subset_eq_empty [simp] ~> []
wenzelm@64390
  1726
  empty_sup [simp] ~> []
wenzelm@64390
  1727
  sup_empty [simp] ~> []
wenzelm@64390
  1728
  inter_empty [simp] ~> []
wenzelm@64390
  1729
  empty_inter [simp] ~> []
wenzelm@64390
  1730
INCOMPATIBILITY.
wenzelm@64390
  1731
wenzelm@64391
  1732
* Session HOL-Library, theory Multiset: the order of the variables in
wenzelm@64390
  1733
the second cases of multiset_induct, multiset_induct2_size,
wenzelm@64390
  1734
multiset_induct2 has been changed (e.g. Add A a ~> Add a A).
wenzelm@64390
  1735
INCOMPATIBILITY.
wenzelm@64390
  1736
wenzelm@64390
  1737
* Session HOL-Library, theory Multiset: there is now a simplification
wenzelm@64390
  1738
procedure on multisets. It mimics the behavior of the procedure on
wenzelm@64390
  1739
natural numbers. INCOMPATIBILITY.
wenzelm@64390
  1740
wenzelm@64390
  1741
* Session HOL-Library, theory Multiset: renamed sums and products of
wenzelm@64390
  1742
multisets:
wenzelm@64390
  1743
wenzelm@64390
  1744
  msetsum ~> sum_mset
wenzelm@64390
  1745
  msetprod ~> prod_mset
wenzelm@64390
  1746
wenzelm@64390
  1747
* Session HOL-Library, theory Multiset: the notation for intersection
wenzelm@64390
  1748
and union of multisets have been changed:
wenzelm@64390
  1749
wenzelm@64390
  1750
  #\<inter> ~> \<inter>#
wenzelm@64390
  1751
  #\<union> ~> \<union>#
wenzelm@64390
  1752
wenzelm@64390
  1753
INCOMPATIBILITY.
wenzelm@64390
  1754
wenzelm@64390
  1755
* Session HOL-Library, theory Multiset: the lemma
wenzelm@64390
  1756
one_step_implies_mult_aux on multisets has been removed, use
wenzelm@64390
  1757
one_step_implies_mult instead. INCOMPATIBILITY.
wenzelm@64390
  1758
wenzelm@64390
  1759
* Session HOL-Library: theory Complete_Partial_Order2 provides reasoning
wenzelm@64390
  1760
support for monotonicity and continuity in chain-complete partial orders
wenzelm@64390
  1761
and about admissibility conditions for fixpoint inductions.
wenzelm@64390
  1762
haftmann@64523
  1763
* Session HOL-Library: theory Library/Polynomial contains also
haftmann@64523
  1764
derivation of polynomials (formerly in Library/Poly_Deriv) but not
haftmann@64523
  1765
gcd/lcm on polynomials over fields. This has been moved to a separate
haftmann@64523
  1766
theory Library/Polynomial_GCD_euclidean.thy, to pave way for a possible
haftmann@64523
  1767
future different type class instantiation for polynomials over factorial
haftmann@64523
  1768
rings. INCOMPATIBILITY.
wenzelm@64390
  1769
wenzelm@64390
  1770
* Session HOL-Library: theory Sublist provides function "prefixes" with
wenzelm@64390
  1771
the following renaming
wenzelm@64390
  1772
wenzelm@64390
  1773
  prefixeq -> prefix
wenzelm@64390
  1774
  prefix -> strict_prefix
wenzelm@64390
  1775
  suffixeq -> suffix
wenzelm@64390
  1776
  suffix -> strict_suffix
wenzelm@64390
  1777
wenzelm@64390
  1778
Added theory of longest common prefixes.
blanchet@64389
  1779
wenzelm@64391
  1780
* Session HOL-Number_Theory: algebraic foundation for primes:
wenzelm@64391
  1781
Generalisation of predicate "prime" and introduction of predicates
wenzelm@64391
  1782
"prime_elem", "irreducible", a "prime_factorization" function, and the
wenzelm@64391
  1783
"factorial_ring" typeclass with instance proofs for nat, int, poly. Some
wenzelm@64391
  1784
theorems now have different names, most notably "prime_def" is now
wenzelm@64391
  1785
"prime_nat_iff". INCOMPATIBILITY.
wenzelm@64391
  1786
wenzelm@64391
  1787
* Session Old_Number_Theory has been removed, after porting remaining
wenzelm@64391
  1788
theories.
wenzelm@64391
  1789
wenzelm@64551
  1790
* Session HOL-Types_To_Sets provides an experimental extension of
wenzelm@64551
  1791
Higher-Order Logic to allow translation of types to sets.
wenzelm@64551
  1792
wenzelm@63198
  1793
wenzelm@62498
  1794
*** ML ***
wenzelm@62498
  1795
wenzelm@63227
  1796
* Integer.gcd and Integer.lcm use efficient operations from the Poly/ML
wenzelm@63228
  1797
library (notably for big integers). Subtle change of semantics:
wenzelm@63228
  1798
Integer.gcd and Integer.lcm both normalize the sign, results are never
wenzelm@63228
  1799
negative. This coincides with the definitions in HOL/GCD.thy.
wenzelm@63228
  1800
INCOMPATIBILITY.
wenzelm@63227
  1801
wenzelm@63212
  1802
* Structure Rat for rational numbers is now an integral part of
wenzelm@63215
  1803
Isabelle/ML, with special notation @int/nat or @int for numerals (an
wenzelm@63215
  1804
abbreviation for antiquotation @{Pure.rat argument}) and ML pretty
wenzelm@63212
  1805
printing. Standard operations on type Rat.rat are provided via ad-hoc
wenzelm@63215
  1806
overloading of + - * / < <= > >= ~ abs. INCOMPATIBILITY, need to
wenzelm@63212
  1807
use + instead of +/ etc. Moreover, exception Rat.DIVZERO has been
wenzelm@63212
  1808
superseded by General.Div.
wenzelm@63198
  1809
wenzelm@64390
  1810
* ML antiquotation @{path} is superseded by @{file}, which ensures that
wenzelm@64390
  1811
the argument is a plain file. Minor INCOMPATIBILITY.
wenzelm@64390
  1812
wenzelm@64390
  1813
* Antiquotation @{make_string} is available during Pure bootstrap --
wenzelm@64390
  1814
with approximative output quality.
wenzelm@64390
  1815
wenzelm@64390
  1816
* Low-level ML system structures (like PolyML and RunCall) are no longer
wenzelm@64390
  1817
exposed to Isabelle/ML user-space. Potential INCOMPATIBILITY.
wenzelm@64390
  1818
wenzelm@62861
  1819
* The ML function "ML" provides easy access to run-time compilation.
wenzelm@62861
  1820
This is particularly useful for conditional compilation, without
wenzelm@62861
  1821
requiring separate files.
wenzelm@62861
  1822
wenzelm@62498
  1823
* Option ML_exception_debugger controls detailed exception trace via the
wenzelm@62498
  1824
Poly/ML debugger. Relevant ML modules need to be compiled beforehand
wenzelm@62498
  1825
with ML_file_debug, or with ML_file and option ML_debugger enabled. Note
wenzelm@62498
  1826
debugger information requires consirable time and space: main
wenzelm@62498
  1827
Isabelle/HOL with full debugger support may need ML_system_64.
wenzelm@62498
  1828
wenzelm@62514
  1829
* Local_Theory.restore has been renamed to Local_Theory.reset to
wenzelm@62514
  1830
emphasize its disruptive impact on the cumulative context, notably the
wenzelm@62514
  1831
scope of 'private' or 'qualified' names. Note that Local_Theory.reset is
wenzelm@62514
  1832
only appropriate when targets are managed, e.g. starting from a global
wenzelm@62514
  1833
theory and returning to it. Regular definitional packages should use
wenzelm@62514
  1834
balanced blocks of Local_Theory.open_target versus
wenzelm@62514
  1835
Local_Theory.close_target instead. Rare INCOMPATIBILITY.
wenzelm@62514
  1836
wenzelm@62519
  1837
* Structure TimeLimit (originally from the SML/NJ library) has been
wenzelm@62519
  1838
replaced by structure Timeout, with slightly different signature.
wenzelm@62519
  1839
INCOMPATIBILITY.
wenzelm@62519
  1840
wenzelm@62551
  1841
* Discontinued cd and pwd operations, which are not well-defined in a
wenzelm@62551
  1842
multi-threaded environment. Note that files are usually located
wenzelm@62551
  1843
relatively to the master directory of a theory (see also
wenzelm@62551
  1844
File.full_path). Potential INCOMPATIBILITY.
wenzelm@62551
  1845
wenzelm@63352
  1846
* Binding.empty_atts supersedes Thm.empty_binding and
wenzelm@63352
  1847
Attrib.empty_binding. Minor INCOMPATIBILITY.
wenzelm@63352
  1848
wenzelm@62498
  1849
wenzelm@62354
  1850
*** System ***
wenzelm@62354
  1851
wenzelm@64390
  1852
* SML/NJ and old versions of Poly/ML are no longer supported.
wenzelm@64390
  1853
wenzelm@64390
  1854
* Poly/ML heaps now follow the hierarchy of sessions, and thus require
wenzelm@64390
  1855
much less disk space.
wenzelm@63226
  1856
wenzelm@62591
  1857
* The Isabelle ML process is now managed directly by Isabelle/Scala, and
wenzelm@62591
  1858
shell scripts merely provide optional command-line access. In
wenzelm@62591
  1859
particular:
wenzelm@62591
  1860
wenzelm@62591
  1861
  . Scala module ML_Process to connect to the raw ML process,
wenzelm@62591
  1862
    with interaction via stdin/stdout/stderr or in batch mode;
wenzelm@62591
  1863
  . command-line tool "isabelle console" as interactive wrapper;
wenzelm@62591
  1864
  . command-line tool "isabelle process" as batch mode wrapper.
wenzelm@62588
  1865
wenzelm@62588
  1866
* The executable "isabelle_process" has been discontinued. Tools and
wenzelm@62588
  1867
prover front-ends should use ML_Process or Isabelle_Process in
wenzelm@62591
  1868
Isabelle/Scala. INCOMPATIBILITY.
wenzelm@62588
  1869
wenzelm@62588
  1870
* New command-line tool "isabelle process" supports ML evaluation of
wenzelm@62588
  1871
literal expressions (option -e) or files (option -f) in the context of a
wenzelm@62588
  1872
given heap image. Errors lead to premature exit of the ML process with
wenzelm@62588
  1873
return code 1.
wenzelm@62588
  1874
wenzelm@64390
  1875
* The command-line tool "isabelle build" supports option -N for cyclic
wenzelm@64390
  1876
shuffling of NUMA CPU nodes. This may help performance tuning on Linux
wenzelm@64390
  1877
servers with separate CPU/memory modules.
wenzelm@64390
  1878
wenzelm@64390
  1879
* System option "threads" (for the size of the Isabelle/ML thread farm)
wenzelm@64390
  1880
is also passed to the underlying ML runtime system as --gcthreads,
wenzelm@64274
  1881
unless there is already a default provided via ML_OPTIONS settings.
wenzelm@64274
  1882
wenzelm@63827
  1883
* System option "checkpoint" helps to fine-tune the global heap space
wenzelm@63827
  1884
management of isabelle build. This is relevant for big sessions that may
wenzelm@63827
  1885
exhaust the small 32-bit address space of the ML process (which is used
wenzelm@63827
  1886
by default).
wenzelm@63827
  1887
wenzelm@64308
  1888
* System option "profiling" specifies the mode for global ML profiling
wenzelm@64342
  1889
in "isabelle build". Possible values are "time", "allocations". The
wenzelm@64342
  1890
command-line tool "isabelle profiling_report" helps to digest the
wenzelm@64342
  1891
resulting log files.
wenzelm@64308
  1892
wenzelm@63986
  1893
* System option "ML_process_policy" specifies an optional command prefix
wenzelm@63986
  1894
for the underlying ML process, e.g. to control CPU affinity on
wenzelm@63987
  1895
multiprocessor systems. The "isabelle jedit" tool allows to override the
wenzelm@63987
  1896
implicit default via option -p.
wenzelm@63986
  1897
wenzelm@64390
  1898
* Command-line tool "isabelle console" provides option -r to help to
wenzelm@64390
  1899
bootstrapping Isabelle/Pure interactively.
wenzelm@64390
  1900
wenzelm@64390
  1901
* Command-line tool "isabelle yxml" has been discontinued.
wenzelm@64390
  1902
INCOMPATIBILITY, use operations from the modules "XML" and "YXML" in
wenzelm@64390
  1903
Isabelle/ML or Isabelle/Scala.
wenzelm@64390
  1904
wenzelm@64390
  1905
* Many Isabelle tools that require a Java runtime system refer to the
wenzelm@64390
  1906
settings ISABELLE_TOOL_JAVA_OPTIONS32 / ISABELLE_TOOL_JAVA_OPTIONS64,
wenzelm@64390
  1907
depending on the underlying platform. The settings for "isabelle build"
wenzelm@64390
  1908
ISABELLE_BUILD_JAVA_OPTIONS32 / ISABELLE_BUILD_JAVA_OPTIONS64 have been
wenzelm@64390
  1909
discontinued. Potential INCOMPATIBILITY.
wenzelm@64390
  1910
wenzelm@64390
  1911
* The Isabelle system environment always ensures that the main
wenzelm@64390
  1912
executables are found within the shell search $PATH: "isabelle" and
wenzelm@64390
  1913
"isabelle_scala_script".
wenzelm@64390
  1914
wenzelm@64390
  1915
* Isabelle tools may consist of .scala files: the Scala compiler is
wenzelm@64390
  1916
invoked on the spot. The source needs to define some object that extends
wenzelm@64390
  1917
Isabelle_Tool.Body.
wenzelm@64390
  1918
wenzelm@64390
  1919
* File.bash_string, File.bash_path etc. represent Isabelle/ML and
wenzelm@64390
  1920
Isabelle/Scala strings authentically within GNU bash. This is useful to
wenzelm@64390
  1921
produce robust shell scripts under program control, without worrying
wenzelm@64390
  1922
about spaces or special characters. Note that user output works via
wenzelm@64390
  1923
Path.print (ML) or Path.toString (Scala). INCOMPATIBILITY, the old (and
wenzelm@64390
  1924
less versatile) operations File.shell_quote, File.shell_path etc. have
wenzelm@64390
  1925
been discontinued.
wenzelm@64390
  1926
wenzelm@63995
  1927
* The isabelle_java executable allows to run a Java process within the
wenzelm@63995
  1928
name space of Java and Scala components that are bundled with Isabelle,
wenzelm@63995
  1929
but without the Isabelle settings environment.
wenzelm@63995
  1930
wenzelm@64390
  1931
* Isabelle/Scala: the SSH module supports ssh and sftp connections, for
wenzelm@64390
  1932
remote command-execution and file-system access. This resembles
wenzelm@64390
  1933
operations from module File and Isabelle_System to some extent. Note
wenzelm@64390
  1934
that Path specifications need to be resolved remotely via
wenzelm@64390
  1935
ssh.remote_path instead of File.standard_path: the implicit process
wenzelm@64390
  1936
environment is different, Isabelle settings are not available remotely.
wenzelm@64390
  1937
wenzelm@64390
  1938
* Isabelle/Scala: the Mercurial module supports repositories via the
wenzelm@64390
  1939
regular hg command-line interface. The repositroy clone and working
wenzelm@64390
  1940
directory may reside on a local or remote file-system (via ssh
wenzelm@64390
  1941
connection).
wenzelm@64265
  1942
wenzelm@62354
  1943
wenzelm@62354
  1944
wenzelm@62031
  1945
New in Isabelle2016 (February 2016)
wenzelm@62016
  1946
-----------------------------------
wenzelm@60138
  1947
wenzelm@61337
  1948
*** General ***
wenzelm@61337
  1949
wenzelm@62168
  1950
* Eisbach is now based on Pure instead of HOL. Objects-logics may import
wenzelm@62168
  1951
either the theory ~~/src/HOL/Eisbach/Eisbach (for HOL etc.) or
wenzelm@62168
  1952
~~/src/HOL/Eisbach/Eisbach_Old_Appl_Syntax (for FOL, ZF etc.). Note that
wenzelm@62168
  1953
the HOL-Eisbach session located in ~~/src/HOL/Eisbach/ contains further
wenzelm@62168
  1954
examples that do require HOL.
wenzelm@62168
  1955
wenzelm@62157
  1956
* Better resource usage on all platforms (Linux, Windows, Mac OS X) for
wenzelm@62157
  1957
both Isabelle/ML and Isabelle/Scala.  Slightly reduced heap space usage.
wenzelm@62157
  1958
wenzelm@62017
  1959
* Former "xsymbols" syntax with Isabelle symbols is used by default,
wenzelm@62017
  1960
without any special print mode. Important ASCII replacement syntax
wenzelm@62017
  1961
remains available under print mode "ASCII", but less important syntax
wenzelm@62017
  1962
has been removed (see below).
wenzelm@62017
  1963
wenzelm@62109
  1964
* Support for more arrow symbols, with rendering in LaTeX and Isabelle
wenzelm@62109
  1965
fonts: \<Lleftarrow> \<Rrightarrow> \<longlongleftarrow> \<longlongrightarrow> \<longlonglongleftarrow> \<longlonglongrightarrow>.
wenzelm@62017
  1966
wenzelm@62108
  1967
* Special notation \<struct> for the first implicit 'structure' in the
wenzelm@62108
  1968
context has been discontinued. Rare INCOMPATIBILITY, use explicit
wenzelm@62108
  1969
structure name instead, notably in indexed notation with block-subscript
wenzelm@62108
  1970
(e.g. \<odot>\<^bsub>A\<^esub>).
wenzelm@62108
  1971
wenzelm@62108
  1972
* The glyph for \<diamond> in the IsabelleText font now corresponds better to its
wenzelm@62108
  1973
counterpart \<box> as quantifier-like symbol. A small diamond is available as
wenzelm@62108
  1974
\<diamondop>; the old symbol \<struct> loses this rendering and any special
wenzelm@62108
  1975
meaning.
wenzelm@62108
  1976
wenzelm@62017
  1977
* Syntax for formal comments "-- text" now also supports the symbolic
wenzelm@62017
  1978
form "\<comment> text". Command-line tool "isabelle update_cartouches -c" helps
wenzelm@62017
  1979
to update old sources.
wenzelm@62017
  1980
wenzelm@61337
  1981
* Toplevel theorem statements have been simplified as follows:
wenzelm@61337
  1982
wenzelm@61337
  1983
  theorems             ~>  lemmas
wenzelm@61337
  1984
  schematic_lemma      ~>  schematic_goal
wenzelm@61337
  1985
  schematic_theorem    ~>  schematic_goal
wenzelm@61337
  1986
  schematic_corollary  ~>  schematic_goal
wenzelm@61337
  1987
wenzelm@61337
  1988
Command-line tool "isabelle update_theorems" updates theory sources
wenzelm@61337
  1989
accordingly.
wenzelm@61337
  1990
wenzelm@61338
  1991
* Toplevel theorem statement 'proposition' is another alias for
wenzelm@61338
  1992
'theorem'.
wenzelm@61338
  1993
wenzelm@62169
  1994
* The old 'defs' command has been removed (legacy since Isabelle2014).
wenzelm@62169
  1995
INCOMPATIBILITY, use regular 'definition' instead. Overloaded and/or
wenzelm@62169
  1996
deferred definitions require a surrounding 'overloading' block.
wenzelm@62169
  1997
wenzelm@61337
  1998
wenzelm@60610
  1999
*** Prover IDE -- Isabelle/Scala/jEdit ***
wenzelm@60610
  2000
wenzelm@60986
  2001
* IDE support for the source-level debugger of Poly/ML, to work with
wenzelm@62253
  2002
Isabelle/ML and official Standard ML. Option "ML_debugger" and commands
wenzelm@62253
  2003
'ML_file_debug', 'ML_file_no_debug', 'SML_file_debug',
wenzelm@62253
  2004
'SML_file_no_debug' control compilation of sources with or without
wenzelm@62253
  2005
debugging information. The Debugger panel allows to set breakpoints (via
wenzelm@62253
  2006
context menu), step through stopped threads, evaluate local ML
wenzelm@62253
  2007
expressions etc. At least one Debugger view needs to be active to have
wenzelm@62253
  2008
any effect on the running ML program.
wenzelm@60984
  2009
wenzelm@61803
  2010
* The State panel manages explicit proof state output, with dynamic
wenzelm@61803
  2011
auto-update according to cursor movement. Alternatively, the jEdit
wenzelm@61803
  2012
action "isabelle.update-state" (shortcut S+ENTER) triggers manual
wenzelm@61803
  2013
update.
wenzelm@61729
  2014
wenzelm@61729
  2015
* The Output panel no longer shows proof state output by default, to
wenzelm@61729
  2016
avoid GUI overcrowding. INCOMPATIBILITY, use the State panel instead or
wenzelm@61729
  2017
enable option "editor_output_state".
wenzelm@61215
  2018
wenzelm@61803
  2019
* The text overview column (status of errors, warnings etc.) is updated
wenzelm@61803
  2020
asynchronously, leading to much better editor reactivity. Moreover, the
wenzelm@61803
  2021
full document node content is taken into account. The width of the
wenzelm@61803
  2022
column is scaled according to the main text area font, for improved
wenzelm@61803
  2023
visibility.
wenzelm@61803
  2024
wenzelm@61803
  2025
* The main text area no longer changes its color hue in outdated
wenzelm@61803
  2026
situations. The text overview column takes over the role to indicate
wenzelm@61803
  2027
unfinished edits in the PIDE pipeline. This avoids flashing text display
wenzelm@61803
  2028
due to ad-hoc updates by auxiliary GUI components, such as the State
wenzelm@61803
  2029
panel.
wenzelm@61803
  2030
wenzelm@62254
  2031
* Slightly improved scheduling for urgent print tasks (e.g. command
wenzelm@62254
  2032
state output, interactive queries) wrt. long-running background tasks.
wenzelm@62017
  2033
wenzelm@62017
  2034
* Completion of symbols via prefix of \<name> or \<^name> or \name is
wenzelm@62017
  2035
always possible, independently of the language context. It is never
wenzelm@62017
  2036
implicit: a popup will show up unconditionally.
wenzelm@62017
  2037
wenzelm@62017
  2038
* Additional abbreviations for syntactic completion may be specified in
wenzelm@62017
  2039
$ISABELLE_HOME/etc/abbrevs and $ISABELLE_HOME_USER/etc/abbrevs, with
wenzelm@62017
  2040
support for simple templates using ASCII 007 (bell) as placeholder.
wenzelm@62017
  2041
wenzelm@62234
  2042
* Symbols \<oplus>, \<Oplus>, \<otimes>, \<Otimes>, \<odot>, \<Odot>, \<ominus>, \<oslash> no longer provide abbreviations for
wenzelm@62234
  2043
completion like "+o", "*o", ".o" etc. -- due to conflicts with other
wenzelm@62234
  2044
ASCII syntax. INCOMPATIBILITY, use plain backslash-completion or define
wenzelm@62234
  2045
suitable abbreviations in $ISABELLE_HOME_USER/etc/abbrevs.
wenzelm@62234
  2046
wenzelm@61483
  2047
* Action "isabelle-emph" (with keyboard shortcut C+e LEFT) controls
wenzelm@61483
  2048
emphasized text style; the effect is visible in document output, not in
wenzelm@61483
  2049
the editor.
wenzelm@61483
  2050
wenzelm@61483
  2051
* Action "isabelle-reset" now uses keyboard shortcut C+e BACK_SPACE,
wenzelm@61483
  2052
instead of former C+e LEFT.
wenzelm@61483
  2053
wenzelm@61512
  2054
* The command-line tool "isabelle jedit" and the isabelle.Main
wenzelm@62027
  2055
application wrapper treat the default $USER_HOME/Scratch.thy more
wenzelm@61512
  2056
uniformly, and allow the dummy file argument ":" to open an empty buffer
wenzelm@61512
  2057
instead.
wenzelm@61512
  2058
wenzelm@62017
  2059
* New command-line tool "isabelle jedit_client" allows to connect to an
wenzelm@62017
  2060
already running Isabelle/jEdit process. This achieves the effect of
wenzelm@62017
  2061
single-instance applications seen on common GUI desktops.
wenzelm@62017
  2062
wenzelm@61529
  2063
* The default look-and-feel for Linux is the traditional "Metal", which
wenzelm@61529
  2064
works better with GUI scaling for very high-resolution displays (e.g.
wenzelm@61529
  2065
4K). Moreover, it is generally more robust than "Nimbus".
wenzelm@61529
  2066
wenzelm@62163
  2067
* Update to jedit-5.3.0, with improved GUI scaling and support of
wenzelm@62163
  2068
high-resolution displays (e.g. 4K).
wenzelm@62163
  2069
wenzelm@62034
  2070
* The main Isabelle executable is managed as single-instance Desktop
wenzelm@62034
  2071
application uniformly on all platforms: Linux, Windows, Mac OS X.
wenzelm@62034
  2072
wenzelm@60610
  2073
wenzelm@61405
  2074
*** Document preparation ***
wenzelm@61405
  2075
wenzelm@62017
  2076
* Commands 'paragraph' and 'subparagraph' provide additional section
wenzelm@62017
  2077
headings. Thus there are 6 levels of standard headings, as in HTML.
wenzelm@62017
  2078
wenzelm@62017
  2079
* Command 'text_raw' has been clarified: input text is processed as in
wenzelm@62017
  2080
'text' (with antiquotations and control symbols). The key difference is
wenzelm@62017
  2081
the lack of the surrounding isabelle markup environment in output.
wenzelm@62017
  2082
wenzelm@62017
  2083
* Text is structured in paragraphs and nested lists, using notation that
wenzelm@62017
  2084
is similar to Markdown. The control symbols for list items are as
wenzelm@62017
  2085
follows:
wenzelm@62017
  2086
wenzelm@62017
  2087
  \<^item>  itemize
wenzelm@62017
  2088
  \<^enum>  enumerate
wenzelm@62017
  2089
  \<^descr>  description
wenzelm@62017
  2090
wenzelm@61491
  2091
* There is a new short form for antiquotations with a single argument
wenzelm@61491
  2092
that is a cartouche: \<^name>\<open>...\<close> is equivalent to @{name \<open>...\<close>} and
wenzelm@61595
  2093
\<open>...\<close> without control symbol is equivalent to @{cartouche \<open>...\<close>}.
wenzelm@61595
  2094
\<^name> without following cartouche is equivalent to @{name}. The
wenzelm@61501
  2095
standard Isabelle fonts provide glyphs to render important control
wenzelm@61501
  2096
symbols, e.g. "\<^verbatim>", "\<^emph>", "\<^bold>".
wenzelm@61491
  2097
wenzelm@61595
  2098
* Antiquotations @{noindent}, @{smallskip}, @{medskip}, @{bigskip} with
wenzelm@61595
  2099
corresponding control symbols \<^noindent>, \<^smallskip>, \<^medskip>, \<^bigskip> specify spacing formally, using
wenzelm@61595
  2100
standard LaTeX macros of the same names.
wenzelm@61595
  2101
wenzelm@61491
  2102
* Antiquotation @{cartouche} in Isabelle/Pure is the same as @{text}.
wenzelm@61491
  2103
Consequently, \<open>...\<close> without any decoration prints literal quasi-formal
wenzelm@61492
  2104
text. Command-line tool "isabelle update_cartouches -t" helps to update
wenzelm@61492
  2105
old sources, by approximative patching of the content of string and
wenzelm@61492
  2106
cartouche tokens seen in theory sources.
wenzelm@61491
  2107
wenzelm@61491
  2108
* The @{text} antiquotation now ignores the antiquotation option
wenzelm@61491
  2109
"source". The given text content is output unconditionally, without any
wenzelm@61491
  2110
surrounding quotes etc. Subtle INCOMPATIBILITY, put quotes into the
wenzelm@61494
  2111
argument where they are really intended, e.g. @{text \<open>"foo"\<close>}. Initial
wenzelm@61494
  2112
or terminal spaces are ignored.
wenzelm@61491
  2113
wenzelm@62017
  2114
* Antiquotations @{emph} and @{bold} output LaTeX source recursively,
wenzelm@62017
  2115
adding appropriate text style markup. These may be used in the short
wenzelm@62017
  2116
form \<^emph>\<open>...\<close> and \<^bold>\<open>...\<close>.
wenzelm@62017
  2117
wenzelm@62017
  2118
* Document antiquotation @{footnote} outputs LaTeX source recursively,
wenzelm@62017
  2119
marked as \footnote{}. This may be used in the short form \<^footnote>\<open>...\<close>.
wenzelm@62017
  2120
wenzelm@62017
  2121
* Antiquotation @{verbatim [display]} supports option "indent".
wenzelm@62017
  2122
wenzelm@62017
  2123
* Antiquotation @{theory_text} prints uninterpreted theory source text
wenzelm@62231
  2124
(Isar outer syntax with command keywords etc.). This may be used in the
wenzelm@62231
  2125
short form \<^theory_text>\<open>...\<close>. @{theory_text [display]} supports option "indent".
wenzelm@62017
  2126
wenzelm@62017
  2127
* Antiquotation @{doc ENTRY} provides a reference to the given
wenzelm@62017
  2128
documentation, with a hyperlink in the Prover IDE.
wenzelm@62017
  2129
wenzelm@62017
  2130
* Antiquotations @{command}, @{method}, @{attribute} print checked
wenzelm@62017
  2131
entities of the Isar language.
wenzelm@62017
  2132
wenzelm@61471
  2133
* HTML presentation uses the standard IsabelleText font and Unicode
wenzelm@61471
  2134
rendering of Isabelle symbols like Isabelle/Scala/jEdit.  The former
wenzelm@61488
  2135
print mode "HTML" loses its special meaning.
wenzelm@61471
  2136
wenzelm@61405
  2137
wenzelm@60406
  2138
*** Isar ***
wenzelm@60406
  2139
wenzelm@62205
  2140
* Local goals ('have', 'show', 'hence', 'thus') allow structured rule
wenzelm@62205
  2141
statements like fixes/assumes/shows in theorem specifications, but the
wenzelm@62205
  2142
notation is postfix with keywords 'if' (or 'when') and 'for'. For
wenzelm@60555
  2143
example:
wenzelm@60414
  2144
wenzelm@60414
  2145
  have result: "C x y"
wenzelm@60414
  2146
    if "A x" and "B y"
wenzelm@60414
  2147
    for x :: 'a and y :: 'a
wenzelm@60414
  2148
    <proof>
wenzelm@60414
  2149
wenzelm@60449
  2150
The local assumptions are bound to the name "that". The result is
wenzelm@60449
  2151
exported from context of the statement as usual. The above roughly
wenzelm@60414
  2152
corresponds to a raw proof block like this:
wenzelm@60414
  2153
wenzelm@60414
  2154
  {
wenzelm@60414
  2155
    fix x :: 'a and y :: 'a
wenzelm@60449
  2156
    assume that: "A x" "B y"
wenzelm@60414
  2157
    have "C x y" <proof>
wenzelm@60414
  2158
  }
wenzelm@60414
  2159
  note result = this
wenzelm@60406
  2160
wenzelm@60555
  2161
The keyword 'when' may be used instead of 'if', to indicate 'presume'
wenzelm@60555
  2162
instead of 'assume' above.
wenzelm@60555
  2163
wenzelm@61733
  2164
* Assumptions ('assume', 'presume') allow structured rule statements
wenzelm@61733
  2165
using 'if' and 'for', similar to 'have' etc. above. For example:
wenzelm@61658
  2166
wenzelm@61658
  2167
  assume result: "C x y"
wenzelm@61658
  2168
    if "A x" and "B y"
wenzelm@61658
  2169
    for x :: 'a and y :: 'a
wenzelm@61658
  2170
wenzelm@61658
  2171
This assumes "\<And>x y::'a. A x \<Longrightarrow> B y \<Longrightarrow> C x y" and produces a general
wenzelm@61658
  2172
result as usual: "A ?x \<Longrightarrow> B ?y \<Longrightarrow> C ?x ?y".
wenzelm@61658
  2173
wenzelm@61658
  2174
Vacuous quantification in assumptions is omitted, i.e. a for-context
wenzelm@61658
  2175
only effects propositions according to actual use of variables. For
wenzelm@61658
  2176
example:
wenzelm@61658
  2177
wenzelm@61658
  2178
  assume "A x" and "B y" for x and y
wenzelm@61658
  2179
wenzelm@61658
  2180
is equivalent to:
wenzelm@61658
  2181
wenzelm@61658
  2182
  assume "\<And>x. A x" and "\<And>y. B y"
wenzelm@61658
  2183
wenzelm@60595
  2184
* The meaning of 'show' with Pure rule statements has changed: premises
wenzelm@60595
  2185
are treated in the sense of 'assume', instead of 'presume'. This means,
wenzelm@62205
  2186
a goal like "\<And>x. A x \<Longrightarrow> B x \<Longrightarrow> C x" can be solved completely as
wenzelm@62205
  2187
follows:
wenzelm@60595
  2188
wenzelm@60595
  2189
  show "\<And>x. A x \<Longrightarrow> B x \<Longrightarrow> C x"
wenzelm@60595
  2190
wenzelm@60595
  2191
or:
wenzelm@60595
  2192
wenzelm@60595
  2193
  show "C x" if "A x" "B x" for x
wenzelm@60595
  2194
wenzelm@60595
  2195
Rare INCOMPATIBILITY, the old behaviour may be recovered as follows:
wenzelm@60595
  2196
wenzelm@60595
  2197
  show "C x" when "A x" "B x" for x
wenzelm@60595
  2198
wenzelm@60459
  2199
* New command 'consider' states rules for generalized elimination and
wenzelm@60459
  2200
case splitting. This is like a toplevel statement "theorem obtains" used
wenzelm@60459
  2201
within a proof body; or like a multi-branch 'obtain' without activation
wenzelm@60459
  2202
of the local context elements yet.
wenzelm@60459
  2203
wenzelm@60455
  2204
* Proof method "cases" allows to specify the rule as first entry of
wenzelm@60455
  2205
chained facts.  This is particularly useful with 'consider':
wenzelm@60455
  2206
wenzelm@60455
  2207
  consider (a) A | (b) B | (c) C <proof>
wenzelm@60455
  2208
  then have something
wenzelm@60455
  2209
  proof cases
wenzelm@60455
  2210
    case a
wenzelm@60455
  2211
    then show ?thesis <proof>
wenzelm@60455
  2212
  next
wenzelm@60455
  2213
    case b
wenzelm@60455
  2214
    then show ?thesis <proof>
wenzelm@60455
  2215
  next
wenzelm@60455
  2216
    case c
wenzelm@60455
  2217
    then show ?thesis <proof>
wenzelm@60455
  2218
  qed
wenzelm@60455
  2219
wenzelm@60565
  2220
* Command 'case' allows fact name and attribute specification like this:
wenzelm@60565
  2221
wenzelm@60565
  2222
  case a: (c xs)
wenzelm@60565
  2223
  case a [attributes]: (c xs)
wenzelm@60565
  2224
wenzelm@60565
  2225
Facts that are introduced by invoking the case context are uniformly
wenzelm@60565
  2226
qualified by "a"; the same name is used for the cumulative fact. The old
wenzelm@60565
  2227
form "case (c xs) [attributes]" is no longer supported. Rare
wenzelm@60565
  2228
INCOMPATIBILITY, need to adapt uses of case facts in exotic situations,
wenzelm@60565
  2229
and always put attributes in front.
wenzelm@60565
  2230
wenzelm@60618
  2231
* The standard proof method of commands 'proof' and '..' is now called
wenzelm@60618
  2232
"standard" to make semantically clear what it is; the old name "default"
wenzelm@60618
  2233
is still available as legacy for some time. Documentation now explains
wenzelm@60618
  2234
'..' more accurately as "by standard" instead of "by rule".
wenzelm@60618
  2235
wenzelm@62017
  2236
* Nesting of Isar goal structure has been clarified: the context after
wenzelm@62017
  2237
the initial backwards refinement is retained for the whole proof, within
wenzelm@62017
  2238
all its context sections (as indicated via 'next'). This is e.g.
wenzelm@62017
  2239
relevant for 'using', 'including', 'supply':
wenzelm@62017
  2240
wenzelm@62017
  2241
  have "A \<and> A" if a: A for A
wenzelm@62017
  2242
    supply [simp] = a
wenzelm@62017
  2243
  proof
wenzelm@62017
  2244
    show A by simp
wenzelm@62017
  2245
  next
wenzelm@62017
  2246
    show A by simp
wenzelm@62017
  2247
  qed
wenzelm@62017
  2248
wenzelm@62017
  2249
* Command 'obtain' binds term abbreviations (via 'is' patterns) in the
wenzelm@62017
  2250
proof body as well, abstracted over relevant parameters.
wenzelm@62017
  2251
wenzelm@62017
  2252
* Improved type-inference for theorem statement 'obtains': separate
wenzelm@62017
  2253
parameter scope for of each clause.
wenzelm@62017
  2254
wenzelm@62017
  2255
* Term abbreviations via 'is' patterns also work for schematic
wenzelm@62017
  2256
statements: result is abstracted over unknowns.
wenzelm@62017
  2257
wenzelm@60631
  2258
* Command 'subgoal' allows to impose some structure on backward
wenzelm@60631
  2259
refinements, to avoid proof scripts degenerating into long of 'apply'
wenzelm@60631
  2260
sequences. Further explanations and examples are given in the isar-ref
wenzelm@60631
  2261
manual.
wenzelm@60631
  2262
wenzelm@62017
  2263
* Command 'supply' supports fact definitions during goal refinement
wenzelm@62017
  2264
('apply' scripts).
wenzelm@62017
  2265
wenzelm@61166
  2266
* Proof method "goal_cases" turns the current subgoals into cases within
wenzelm@61166
  2267
the context; the conclusion is bound to variable ?case in each case. For
wenzelm@61166
  2268
example:
wenzelm@60617
  2269
wenzelm@60617
  2270
lemma "\<And>x. A x \<Longrightarrow> B x \<Longrightarrow> C x"
wenzelm@60622
  2271
  and "\<And>y z. U y \<Longrightarrow> V z \<Longrightarrow> W y z"
wenzelm@61166
  2272
proof goal_cases
wenzelm@60622
  2273
  case (1 x)
wenzelm@60622
  2274
  then show ?case using \<open>A x\<close> \<open>B x\<close> sorry
wenzelm@60622
  2275
next
wenzelm@60622
  2276
  case (2 y z)
wenzelm@60622
  2277
  then show ?case using \<open>U y\<close> \<open>V z\<close> sorry
wenzelm@60622
  2278
qed
wenzelm@60622
  2279
wenzelm@60622
  2280
lemma "\<And>x. A x \<Longrightarrow> B x \<Longrightarrow> C x"
wenzelm@60622
  2281
  and "\<And>y z. U y \<Longrightarrow> V z \<Longrightarrow> W y z"
wenzelm@61166
  2282
proof goal_cases
wenzelm@60617
  2283
  case prems: 1
wenzelm@60617
  2284
  then show ?case using prems sorry
wenzelm@60617
  2285
next
wenzelm@60617
  2286
  case prems: 2
wenzelm@60617
  2287
  then show ?case using prems sorry
wenzelm@60617
  2288
qed
wenzelm@60578
  2289
wenzelm@60581
  2290
* The undocumented feature of implicit cases goal1, goal2, goal3, etc.
wenzelm@60617
  2291
is marked as legacy, and will be removed eventually. The proof method
wenzelm@60617
  2292
"goals" achieves a similar effect within regular Isar; often it can be
wenzelm@60617
  2293
done more adequately by other means (e.g. 'consider').
wenzelm@60581
  2294
wenzelm@62017
  2295
* The vacuous fact "TERM x" may be established "by fact" or as `TERM x`
wenzelm@62017
  2296
as well, not just "by this" or "." as before.
wenzelm@60551
  2297
wenzelm@60554
  2298
* Method "sleep" succeeds after a real-time delay (in seconds). This is
wenzelm@60554
  2299
occasionally useful for demonstration and testing purposes.
wenzelm@60554
  2300
wenzelm@60406
  2301
wenzelm@60331
  2302
*** Pure ***
wenzelm@60331
  2303
wenzelm@61606
  2304
* Qualifiers in locale expressions default to mandatory ('!') regardless
wenzelm@61606
  2305
of the command. Previously, for 'locale' and 'sublocale' the default was
wenzelm@61606
  2306
optional ('?'). The old synatx '!' has been discontinued.
wenzelm@61606
  2307
INCOMPATIBILITY, remove '!' and add '?' as required.
ballarin@61565
  2308
ballarin@61566
  2309
* Keyword 'rewrites' identifies rewrite morphisms in interpretation
wenzelm@62017
  2310
commands. Previously, the keyword was 'where'. INCOMPATIBILITY.
ballarin@61566
  2311
ballarin@61701
  2312
* More gentle suppression of syntax along locale morphisms while
wenzelm@62017
  2313
printing terms. Previously 'abbreviation' and 'notation' declarations
wenzelm@62017
  2314
would be suppressed for morphisms except term identity. Now
ballarin@61701
  2315
'abbreviation' is also kept for morphims that only change the involved
wenzelm@62017
  2316
parameters, and only 'notation' is suppressed. This can be of great help
wenzelm@62017
  2317
when working with complex locale hierarchies, because proof states are
wenzelm@62017
  2318
displayed much more succinctly. It also means that only notation needs
wenzelm@62017
  2319
to be redeclared if desired, as illustrated by this example:
ballarin@61701
  2320
ballarin@61701
  2321
  locale struct = fixes composition :: "'a => 'a => 'a" (infixl "\<cdot>" 65)
ballarin@61701
  2322
  begin
ballarin@61701
  2323
    definition derived (infixl "\<odot>" 65) where ...
ballarin@61701
  2324
  end
ballarin@61701
  2325
ballarin@61701
  2326
  locale morphism =
ballarin@61701
  2327
    left: struct composition + right: struct composition'
ballarin@61701
  2328
    for composition (infix "\<cdot>" 65) and composition' (infix "\<cdot>''" 65)
ballarin@61701
  2329
  begin
ballarin@61701
  2330
    notation right.derived ("\<odot>''")
ballarin@61701
  2331
  end
ballarin@61701
  2332
wenzelm@61895
  2333
* Command 'global_interpretation' issues interpretations into global
wenzelm@61895
  2334
theories, with optional rewrite definitions following keyword 'defines'.
wenzelm@61895
  2335
wenzelm@61895
  2336
* Command 'sublocale' accepts optional rewrite definitions after keyword
haftmann@61675
  2337
'defines'.
haftmann@61675
  2338
wenzelm@61895
  2339
* Command 'permanent_interpretation' has been discontinued. Use
wenzelm@61895
  2340
'global_interpretation' or 'sublocale' instead. INCOMPATIBILITY.
haftmann@61670
  2341
wenzelm@61252
  2342
* Command 'print_definitions' prints dependencies of definitional
wenzelm@61252
  2343
specifications. This functionality used to be part of 'print_theory'.
wenzelm@61252
  2344
wenzelm@60331
  2345
* Configuration option rule_insts_schematic has been discontinued
wenzelm@62017
  2346
(intermediate legacy feature in Isabelle2015). INCOMPATIBILITY.
wenzelm@60331
  2347
wenzelm@62205
  2348
* Abbreviations in type classes now carry proper sort constraint. Rare
wenzelm@62205
  2349
INCOMPATIBILITY in situations where the previous misbehaviour has been
wenzelm@62205
  2350
exploited.
haftmann@60347
  2351
haftmann@60347
  2352
* Refinement of user-space type system in type classes: pseudo-local
wenzelm@62205
  2353
operations behave more similar to abbreviations. Potential
haftmann@60347
  2354
INCOMPATIBILITY in exotic situations.
haftmann@60347
  2355
haftmann@60347
  2356
nipkow@60171
  2357
*** HOL ***
nipkow@60171
  2358
wenzelm@62017
  2359
* The 'typedef' command has been upgraded from a partially checked
wenzelm@62017
  2360
"axiomatization", to a full definitional specification that takes the
wenzelm@62017
  2361
global collection of overloaded constant / type definitions into
wenzelm@62017
  2362
account. Type definitions with open dependencies on overloaded
wenzelm@62017
  2363
definitions need to be specified as "typedef (overloaded)". This
wenzelm@62017
  2364
provides extra robustness in theory construction. Rare INCOMPATIBILITY.
wenzelm@62017
  2365
wenzelm@62017
  2366
* Qualification of various formal entities in the libraries is done more
wenzelm@62017
  2367
uniformly via "context begin qualified definition ... end" instead of
wenzelm@62017
  2368
old-style "hide_const (open) ...". Consequently, both the defined
wenzelm@62017
  2369
constant and its defining fact become qualified, e.g. Option.is_none and
wenzelm@62017
  2370
Option.is_none_def. Occasional INCOMPATIBILITY in applications.
wenzelm@62017
  2371
wenzelm@62017
  2372
* Some old and rarely used ASCII replacement syntax has been removed.
wenzelm@62017
  2373
INCOMPATIBILITY, standard syntax with symbols should be used instead.
wenzelm@62017
  2374
The subsequent commands help to reproduce the old forms, e.g. to
wenzelm@62017
  2375
simplify porting old theories:
wenzelm@62017
  2376
wenzelm@62017
  2377
  notation iff  (infixr "<->" 25)
wenzelm@62017
  2378
wenzelm@62017
  2379
  notation Times  (infixr "<*>" 80)
wenzelm@62017
  2380
wenzelm@62017
  2381
  type_notation Map.map  (infixr "~=>" 0)
wenzelm@62017
  2382
  notation Map.map_comp  (infixl "o'_m" 55)
wenzelm@62017
  2383
wenzelm@62017
  2384
  type_notation FinFun.finfun ("(_ =>f /_)" [22, 21] 21)
wenzelm@62017
  2385
wenzelm@62017
  2386
  notation FuncSet.funcset  (infixr "->" 60)
wenzelm@62017
  2387
  notation FuncSet.extensional_funcset  (infixr "->\<^sub>E" 60)
wenzelm@62017
  2388
wenzelm@62017
  2389
  notation Omega_Words_Fun.conc (infixr "conc" 65)
wenzelm@62017
  2390
wenzelm@62017
  2391
  notation Preorder.equiv ("op ~~")
wenzelm@62017
  2392
    and Preorder.equiv ("(_/ ~~ _)" [51, 51] 50)
wenzelm@62017
  2393
wenzelm@62017
  2394
  notation (in topological_space) tendsto (infixr "--->" 55)
wenzelm@62017
  2395
  notation (in topological_space) LIMSEQ ("((_)/ ----> (_))" [60, 60] 60)
wenzelm@62017
  2396
  notation LIM ("((_)/ -- (_)/ --> (_))" [60, 0, 60] 60)
wenzelm@62017
  2397
wenzelm@62017
  2398
  notation NSA.approx (infixl "@=" 50)
wenzelm@62017
  2399
  notation NSLIMSEQ ("((_)/ ----NS> (_))" [60, 60] 60)
wenzelm@62017
  2400
  notation NSLIM ("((_)/ -- (_)/ --NS> (_))" [60, 0, 60] 60)
wenzelm@62017
  2401
wenzelm@62017
  2402
* The alternative notation "\<Colon>" for type and sort constraints has been
wenzelm@62017
  2403
removed: in LaTeX document output it looks the same as "::".
wenzelm@62017
  2404
INCOMPATIBILITY, use plain "::" instead.
wenzelm@62017
  2405
wenzelm@62017
  2406
* Commands 'inductive' and 'inductive_set' work better when names for
wenzelm@62017
  2407
intro rules are omitted: the "cases" and "induct" rules no longer
wenzelm@62017
  2408
declare empty case_names, but no case_names at all. This allows to use
wenzelm@62017
  2409
numbered cases in proofs, without requiring method "goal_cases".
wenzelm@62017
  2410
wenzelm@62017
  2411
* Inductive definitions ('inductive', 'coinductive', etc.) expose
wenzelm@62017
  2412
low-level facts of the internal construction only if the option
wenzelm@62093
  2413
"inductive_internals" is enabled. This refers to the internal predicate
wenzelm@62017
  2414
definition and its monotonicity result. Rare INCOMPATIBILITY.
wenzelm@62017
  2415
wenzelm@62017
  2416
* Recursive function definitions ('fun', 'function', 'partial_function')
wenzelm@62017
  2417
expose low-level facts of the internal construction only if the option
wenzelm@62205
  2418
"function_internals" is enabled. Its internal inductive definition is
wenzelm@62205
  2419
also subject to "inductive_internals". Rare INCOMPATIBILITY.
wenzelm@62093
  2420
wenzelm@62093
  2421
* BNF datatypes ('datatype', 'codatatype', etc.) expose low-level facts
wenzelm@62093
  2422
of the internal construction only if the option "bnf_internals" is
wenzelm@62093
  2423
enabled. This supersedes the former option "bnf_note_all". Rare
wenzelm@62093
  2424
INCOMPATIBILITY.
wenzelm@62017
  2425
wenzelm@62017
  2426
* Combinator to represent case distinction on products is named
wenzelm@62017
  2427
"case_prod", uniformly, discontinuing any input aliasses. Very popular
wenzelm@62017
  2428
theorem aliasses have been retained.
wenzelm@62017
  2429
haftmann@61424
  2430
Consolidated facts:
haftmann@61424
  2431
  PairE ~> prod.exhaust
haftmann@61424
  2432
  Pair_eq ~> prod.inject
haftmann@61424
  2433
  pair_collapse ~> prod.collapse
haftmann@61424
  2434
  Pair_fst_snd_eq ~> prod_eq_iff
haftmann@61424
  2435
  split_twice ~> prod.case_distrib
haftmann@61424
  2436
  split_weak_cong ~> prod.case_cong_weak
haftmann@61424
  2437
  split_split ~> prod.split
haftmann@61424
  2438
  split_split_asm ~> prod.split_asm
haftmann@61424
  2439
  splitI ~> case_prodI
haftmann@61424
  2440
  splitD ~> case_prodD
haftmann@61424
  2441
  splitI2 ~> case_prodI2
haftmann@61424
  2442
  splitI2' ~> case_prodI2'
haftmann@61424
  2443
  splitE ~> case_prodE
haftmann@61424
  2444
  splitE' ~> case_prodE'
haftmann@61424
  2445
  split_pair ~> case_prod_Pair
haftmann@61424
  2446
  split_eta ~> case_prod_eta
haftmann@61424
  2447
  split_comp ~> case_prod_comp
haftmann@61424
  2448
  mem_splitI ~> mem_case_prodI
haftmann@61424
  2449
  mem_splitI2 ~> mem_case_prodI2
haftmann@61424
  2450
  mem_splitE ~> mem_case_prodE
haftmann@61424
  2451
  The_split ~> The_case_prod
haftmann@61424
  2452
  cond_split_eta ~> cond_case_prod_eta
haftmann@61424
  2453
  Collect_split_in_rel_leE ~> Collect_case_prod_in_rel_leE
haftmann@61424
  2454
  Collect_split_in_rel_leI ~> Collect_case_prod_in_rel_leI
haftmann@61424
  2455
  in_rel_Collect_split_eq ~> in_rel_Collect_case_prod_eq
haftmann@61424
  2456
  Collect_split_Grp_eqD ~> Collect_case_prod_Grp_eqD
haftmann@61424
  2457
  Collect_split_Grp_inD ~> Collect_case_prod_Grp_in
haftmann@61424
  2458
  Domain_Collect_split ~> Domain_Collect_case_prod
haftmann@61424
  2459
  Image_Collect_split ~> Image_Collect_case_prod
haftmann@61424
  2460
  Range_Collect_split ~> Range_Collect_case_prod
haftmann@61424
  2461
  Eps_split ~> Eps_case_prod
haftmann@61424
  2462
  Eps_split_eq ~> Eps_case_prod_eq
haftmann@61424
  2463
  split_rsp ~> case_prod_rsp
haftmann@61424
  2464
  curry_split ~> curry_case_prod
haftmann@61424
  2465
  split_curry ~> case_prod_curry
wenzelm@62017
  2466
haftmann@61424
  2467
Changes in structure HOLogic:
haftmann@61424
  2468
  split_const ~> case_prod_const
haftmann@61424
  2469
  mk_split ~> mk_case_prod
haftmann@61424
  2470
  mk_psplits ~> mk_ptupleabs
haftmann@61424
  2471
  strip_psplits ~> strip_ptupleabs
wenzelm@62017
  2472
wenzelm@62017
  2473
INCOMPATIBILITY.
wenzelm@62017
  2474
wenzelm@62017
  2475
* The coercions to type 'real' have been reorganised. The function
wenzelm@62017
  2476
'real' is no longer overloaded, but has type 'nat => real' and
wenzelm@62017
  2477
abbreviates of_nat for that type. Also 'real_of_int :: int => real'
wenzelm@62017
  2478
abbreviates of_int for that type. Other overloaded instances of 'real'
wenzelm@62017
  2479
have been replaced by 'real_of_ereal' and 'real_of_float'.
wenzelm@62017
  2480
lp15@61694
  2481
Consolidated facts (among others):
lp15@61694
  2482
  real_of_nat_le_iff -> of_nat_le_iff
lp15@61694
  2483
  real_of_nat_numeral of_nat_numeral
lp15@61694
  2484
  real_of_int_zero of_int_0
lp15@61694
  2485
  real_of_nat_zero of_nat_0
lp15@61694
  2486
  real_of_one of_int_1
lp15@61694
  2487
  real_of_int_add of_int_add
lp15@61694
  2488
  real_of_nat_add of_nat_add
lp15@61694
  2489
  real_of_int_diff of_int_diff
lp15@61694
  2490
  real_of_nat_diff of_nat_diff
lp15@61694
  2491
  floor_subtract floor_diff_of_int
lp15@61694
  2492
  real_of_int_inject of_int_eq_iff
lp15@61694
  2493
  real_of_int_gt_zero_cancel_iff of_int_0_less_iff
lp15@61694
  2494
  real_of_int_ge_zero_cancel_iff of_int_0_le_iff
lp15@61694
  2495
  real_of_nat_ge_zero of_nat_0_le_iff
lp15@61694
  2496
  real_of_int_ceiling_ge le_of_int_ceiling
lp15@61694
  2497
  ceiling_less_eq ceiling_less_iff
lp15@61694
  2498
  ceiling_le_eq ceiling_le_iff
lp15@61694
  2499
  less_floor_eq less_floor_iff
lp15@61694
  2500
  floor_less_eq floor_less_iff
lp15@61694
  2501
  floor_divide_eq_div floor_divide_of_int_eq
lp15@61694
  2502
  real_of_int_zero_cancel of_nat_eq_0_iff
lp15@61694
  2503
  ceiling_real_of_int ceiling_of_int
wenzelm@62017
  2504
wenzelm@62017
  2505
INCOMPATIBILITY.
wenzelm@61143
  2506
wenzelm@60841
  2507
* Theory Map: lemma map_of_is_SomeD was a clone of map_of_SomeD and has
wenzelm@60841
  2508
been removed. INCOMPATIBILITY.
wenzelm@60841
  2509
lars@60712
  2510
* Quickcheck setup for finite sets.
lars@60712
  2511
nipkow@60171
  2512
* Discontinued simp_legacy_precond. Potential INCOMPATIBILITY.
wenzelm@60138
  2513
blanchet@60306
  2514
* Sledgehammer:
blanchet@61318
  2515
  - The MaSh relevance filter has been sped up.
blanchet@60306
  2516
  - Proof reconstruction has been improved, to minimize the incidence of
blanchet@60306
  2517
    cases where Sledgehammer gives a proof that does not work.
blanchet@60306
  2518
  - Auto Sledgehammer now minimizes and preplays the results.
blanchet@61030
  2519
  - Handle Vampire 4.0 proof output without raising exception.
blanchet@61043
  2520
  - Eliminated "MASH" environment variable. Use the "MaSh" option in
blanchet@61043
  2521
    Isabelle/jEdit instead. INCOMPATIBILITY.
blanchet@61317
  2522
  - Eliminated obsolete "blocking" option and related subcommands.
blanchet@60306
  2523
blanchet@60310
  2524
* Nitpick:
blanchet@61325
  2525
  - Fixed soundness bug in translation of "finite" predicate.
blanchet@61324
  2526
  - Fixed soundness bug in "destroy_constrs" optimization.
blanchet@62080
  2527
  - Fixed soundness bug in translation of "rat" type.
blanchet@60310
  2528
  - Removed "check_potential" and "check_genuine" options.
blanchet@61317
  2529
  - Eliminated obsolete "blocking" option.
blanchet@60310
  2530
wenzelm@62027
  2531
* (Co)datatype package:
blanchet@61345
  2532
  - New commands "lift_bnf" and "copy_bnf" for lifting (copying) a BNF
blanchet@61345
  2533
    structure on the raw type to an abstract type defined using typedef.
blanchet@61345
  2534
  - Always generate "case_transfer" theorem.
wenzelm@62235
  2535
  - For mutual types, generate slightly stronger "rel_induct",
haftmann@63946
  2536
    "rel_coinduct", and "coinduct" theorems. INCOMPATIBILITY.
blanchet@61551
  2537
  - Allow discriminators and selectors with the same name as the type
blanchet@61551
  2538
    being defined.
blanchet@61551
  2539
  - Avoid various internal name clashes (e.g., 'datatype f = f').
traytel@60920
  2540
wenzelm@62098
  2541
* Transfer: new methods for interactive debugging of 'transfer' and
wenzelm@62098
  2542
'transfer_prover': 'transfer_start', 'transfer_step', 'transfer_end',
wenzelm@62098
  2543
'transfer_prover_start' and 'transfer_prover_end'.
kuncar@61370
  2544
kleing@62118
  2545
* New diagnostic command print_record for displaying record definitions.
kleing@62118
  2546
haftmann@60868
  2547
* Division on integers is bootstrapped directly from division on
wenzelm@62017
  2548
naturals and uses generic numeral algorithm for computations. Slight
wenzelm@62017
  2549
INCOMPATIBILITY, simproc numeral_divmod replaces and generalizes former
wenzelm@62017
  2550
simprocs binary_int_div and binary_int_mod
wenzelm@62017
  2551
wenzelm@62017
  2552
* Tightened specification of class semiring_no_zero_divisors. Minor
haftmann@60516
  2553
INCOMPATIBILITY.
haftmann@60516
  2554
haftmann@60688
  2555
* Class algebraic_semidom introduces common algebraic notions of
wenzelm@62017
  2556
integral (semi)domains, particularly units. Although logically subsumed
wenzelm@62017
  2557
by fields, is is not a super class of these in order not to burden
wenzelm@62017
  2558
fields with notions that are trivial there.
wenzelm@62017
  2559
wenzelm@62017
  2560
* Class normalization_semidom specifies canonical representants for
wenzelm@62017
  2561
equivalence classes of associated elements in an integral (semi)domain.
wenzelm@62017
  2562
This formalizes associated elements as well.
haftmann@60688
  2563
haftmann@60688
  2564
* Abstract specification of gcd/lcm operations in classes semiring_gcd,
wenzelm@62017
  2565
semiring_Gcd, semiring_Lcd. Minor INCOMPATIBILITY: facts gcd_nat.commute
wenzelm@62017
  2566
and gcd_int.commute are subsumed by gcd.commute, as well as
wenzelm@62017
  2567
gcd_nat.assoc and gcd_int.assoc by gcd.assoc.
wenzelm@62017
  2568
wenzelm@62017
  2569
* Former constants Fields.divide (_ / _) and Divides.div (_ div _) are
wenzelm@62017
  2570
logically unified to Rings.divide in syntactic type class Rings.divide,
wenzelm@62017
  2571
with infix syntax (_ div _). Infix syntax (_ / _) for field division is
wenzelm@62017
  2572
added later as abbreviation in class Fields.inverse. INCOMPATIBILITY,
wenzelm@62017
  2573
instantiations must refer to Rings.divide rather than the former
wenzelm@62017
  2574
separate constants, hence infix syntax (_ / _) is usually not available
wenzelm@62017
  2575
during instantiation.
wenzelm@62017
  2576
wenzelm@62017
  2577
* New cancellation simprocs for boolean algebras to cancel complementary
wenzelm@62017
  2578
terms for sup and inf. For example, "sup x (sup y (- x))" simplifies to
wenzelm@62017
  2579
"top". INCOMPATIBILITY.
Andreas@61629
  2580
hoelzl@62101
  2581
* Class uniform_space introduces uniform spaces btw topological spaces
hoelzl@62101
  2582
and metric spaces. Minor INCOMPATIBILITY: open_<type>_def needs to be
wenzelm@62205
  2583
introduced in the form of an uniformity. Some constants are more general
wenzelm@62205
  2584
now, it may be necessary to add type class constraints.
hoelzl@62101
  2585
hoelzl@62101
  2586
  open_real_def \<leadsto> open_dist
hoelzl@62101
  2587
  open_complex_def \<leadsto> open_dist
hoelzl@62101
  2588
wenzelm@62026
  2589
* Library/Monad_Syntax: notation uses symbols \<bind> and \<then>. INCOMPATIBILITY.
wenzelm@62026
  2590
Mathias@60397
  2591
* Library/Multiset:
Mathias@60397
  2592
  - Renamed multiset inclusion operators:
Mathias@60397
  2593
      < ~> <#
blanchet@62208
  2594
      > ~> >#
Mathias@60397
  2595
      <= ~> <=#
blanchet@62208
  2596
      >= ~> >=#
Mathias@60397
  2597
      \<le> ~> \<le>#
blanchet@62208
  2598
      \<ge> ~> \<ge>#
Mathias@60397
  2599
    INCOMPATIBILITY.
blanchet@62209
  2600
  - Added multiset inclusion operator syntax:
blanchet@62209
  2601
      \<subset>#
blanchet@62209
  2602
      \<subseteq>#
blanchet@62209
  2603
      \<supset>#
blanchet@62209
  2604
      \<supseteq>#
Mathias@60397
  2605
  - "'a multiset" is no longer an instance of the "order",
Mathias@60397
  2606
    "ordered_ab_semigroup_add_imp_le", "ordered_cancel_comm_monoid_diff",
Mathias@60397
  2607
    "semilattice_inf", and "semilattice_sup" type classes. The theorems
Mathias@60397
  2608
    previously provided by these type classes (directly or indirectly)
Mathias@60397
  2609
    are now available through the "subset_mset" interpretation
Mathias@60397
  2610
    (e.g. add_mono ~> subset_mset.add_mono).
Mathias@60397
  2611
    INCOMPATIBILITY.
nipkow@60497
  2612
  - Renamed conversions:
nipkow@60515
  2613
      multiset_of ~> mset
nipkow@60515
  2614
      multiset_of_set ~> mset_set
nipkow@60497
  2615
      set_of ~> set_mset
nipkow@60497
  2616
    INCOMPATIBILITY
Mathias@60398
  2617
  - Renamed lemmas:
Mathias@60398
  2618
      mset_le_def ~> subseteq_mset_def
Mathias@60398
  2619
      mset_less_def ~> subset_mset_def
Mathias@60400
  2620
      less_eq_multiset.rep_eq ~> subseteq_mset_def
Mathias@60400
  2621
    INCOMPATIBILITY
Mathias@60400
  2622
  - Removed lemmas generated by lift_definition:
wenzelm@62235
  2623
    less_eq_multiset.abs_eq, less_eq_multiset.rsp,
wenzelm@62235
  2624
    less_eq_multiset.transfer, less_eq_multiset_def
Mathias@60400
  2625
    INCOMPATIBILITY
wenzelm@60006
  2626
wenzelm@62017
  2627
* Library/Omega_Words_Fun: Infinite words modeled as functions nat \<Rightarrow> 'a.
wenzelm@62017
  2628
wenzelm@62017
  2629
* Library/Bourbaki_Witt_Fixpoint: Added formalisation of the
wenzelm@62017
  2630
Bourbaki-Witt fixpoint theorem for increasing functions in
wenzelm@62017
  2631
chain-complete partial orders.
wenzelm@62017
  2632
wenzelm@62017
  2633
* Library/Old_Recdef: discontinued obsolete 'defer_recdef' command.
wenzelm@62017
  2634
Minor INCOMPATIBILITY, use 'function' instead.
wenzelm@62017
  2635
wenzelm@62064
  2636
* Library/Periodic_Fun: a locale that provides convenient lemmas for
wenzelm@62064
  2637
periodic functions.
eberlm@62060
  2638
wenzelm@62098
  2639
* Library/Formal_Power_Series: proper definition of division (with
wenzelm@62098
  2640
remainder) for formal power series; instances for Euclidean Ring and
wenzelm@62098
  2641
GCD.
eberlm@62086
  2642
wenzelm@62084
  2643
* HOL-Imperative_HOL: obsolete theory Legacy_Mrec has been removed.
wenzelm@62084
  2644
wenzelm@62084
  2645
* HOL-Statespace: command 'statespace' uses mandatory qualifier for
wenzelm@62084
  2646
import of parent, as for general 'locale' expressions. INCOMPATIBILITY,
wenzelm@62084
  2647
remove '!' and add '?' as required.
wenzelm@62084
  2648
wenzelm@62237
  2649
* HOL-Decision_Procs: The "approximation" method works with "powr"
wenzelm@62237
  2650
(exponentiation on real numbers) again.
wenzelm@62237
  2651
wenzelm@62084
  2652
* HOL-Multivariate_Analysis: theory Cauchy_Integral_Thm with Contour
wenzelm@62084
  2653
integrals (= complex path integrals), Cauchy's integral theorem, winding
wenzelm@62084
  2654
numbers and Cauchy's integral formula, Liouville theorem, Fundamental
wenzelm@62084
  2655
Theorem of Algebra. Ported from HOL Light.
wenzelm@62084
  2656
wenzelm@62084
  2657
* HOL-Multivariate_Analysis: topological concepts such as connected
wenzelm@62017
  2658
components, homotopic paths and the inside or outside of a set.
wenzelm@61121
  2659
wenzelm@62084
  2660
* HOL-Multivariate_Analysis: radius of convergence of power series and
wenzelm@62064
  2661
various summability tests; Harmonic numbers and the Euler–Mascheroni
wenzelm@62064
  2662
constant; the Generalised Binomial Theorem; the complex and real
wenzelm@62064
  2663
Gamma/log-Gamma/Digamma/ Polygamma functions and their most important
wenzelm@62064
  2664
properties.
eberlm@62060
  2665
wenzelm@62084
  2666
* HOL-Probability: The central limit theorem based on Levy's uniqueness
wenzelm@62084
  2667
and continuity theorems, weak convergence, and characterisitc functions.
wenzelm@62084
  2668
wenzelm@62084
  2669
* HOL-Data_Structures: new and growing session of standard data
wenzelm@62084
  2670
structures.
lammich@61178
  2671
wenzelm@60479
  2672
wenzelm@60793
  2673
*** ML ***
wenzelm@60793
  2674
wenzelm@62017
  2675
* The following combinators for low-level profiling of the ML runtime
wenzelm@62017
  2676
system are available:
wenzelm@62017
  2677
wenzelm@62017
  2678
  profile_time          (*CPU time*)
wenzelm@62017
  2679
  profile_time_thread   (*CPU time on this thread*)
wenzelm@62017
  2680
  profile_allocations   (*overall heap allocations*)
wenzelm@62017
  2681
wenzelm@62017
  2682
* Antiquotation @{undefined} or \<^undefined> inlines (raise Match).
wenzelm@62017
  2683
wenzelm@62075
  2684
* Antiquotation @{method NAME} inlines the (checked) name of the given
wenzelm@62075
  2685
Isar proof method.
wenzelm@62075
  2686
wenzelm@61922
  2687
* Pretty printing of Poly/ML compiler output in Isabelle has been
wenzelm@61922
  2688
improved: proper treatment of break offsets and blocks with consistent
wenzelm@61922
  2689
breaks.
wenzelm@61922
  2690
wenzelm@61268
  2691
* The auxiliary module Pure/display.ML has been eliminated. Its
wenzelm@61268
  2692
elementary thm print operations are now in Pure/more_thm.ML and thus
wenzelm@61268
  2693
called Thm.pretty_thm, Thm.string_of_thm etc. INCOMPATIBILITY.
wenzelm@61268
  2694
wenzelm@61144
  2695
* Simproc programming interfaces have been simplified:
wenzelm@61144
  2696
Simplifier.make_simproc and Simplifier.define_simproc supersede various
wenzelm@61144
  2697
forms of Simplifier.mk_simproc, Simplifier.simproc_global etc. Note that
wenzelm@61144
  2698
term patterns for the left-hand sides are specified with implicitly
wenzelm@61144
  2699
fixed variables, like top-level theorem statements. INCOMPATIBILITY.
wenzelm@61144
  2700
wenzelm@60802
  2701
* Instantiation rules have been re-organized as follows:
wenzelm@60802
  2702
wenzelm@60802
  2703
  Thm.instantiate  (*low-level instantiation with named arguments*)
wenzelm@60802
  2704
  Thm.instantiate' (*version with positional arguments*)
wenzelm@60802
  2705
wenzelm@60802
  2706
  Drule.infer_instantiate  (*instantiation with type inference*)
wenzelm@60802
  2707
  Drule.infer_instantiate'  (*version with positional arguments*)
wenzelm@60802
  2708
wenzelm@60802
  2709
The LHS only requires variable specifications, instead of full terms.
wenzelm@60802
  2710
Old cterm_instantiate is superseded by infer_instantiate.
wenzelm@60802
  2711
INCOMPATIBILITY, need to re-adjust some ML names and types accordingly.
wenzelm@60802
  2712
wenzelm@60793
  2713
* Old tactic shorthands atac, rtac, etac, dtac, ftac have been
wenzelm@60793
  2714
discontinued. INCOMPATIBILITY, use regular assume_tac, resolve_tac etc.
wenzelm@60793
  2715
instead (with proper context).
wenzelm@60642
  2716
wenzelm@60642
  2717
* Thm.instantiate (and derivatives) no longer require the LHS of the
wenzelm@60642
  2718
instantiation to be certified: plain variables are given directly.
wenzelm@60642
  2719
wenzelm@60707
  2720
* Subgoal.SUBPROOF and Subgoal.FOCUS combinators use anonymous
wenzelm@60707
  2721
quasi-bound variables (like the Simplifier), instead of accidentally
wenzelm@60707
  2722
named local fixes. This has the potential to improve stability of proof
wenzelm@60707
  2723
tools, but can also cause INCOMPATIBILITY for tools that don't observe
wenzelm@60707
  2724
the proof context discipline.
wenzelm@60707
  2725
wenzelm@62017
  2726
* Isar proof methods are based on a slightly more general type
wenzelm@62017
  2727
context_tactic, which allows to change the proof context dynamically
wenzelm@62017
  2728
(e.g. to update cases) and indicate explicit Seq.Error results. Former
wenzelm@62017
  2729
METHOD_CASES is superseded by CONTEXT_METHOD; further combinators are
wenzelm@62017
  2730
provided in src/Pure/Isar/method.ML for convenience. INCOMPATIBILITY.
wenzelm@61885
  2731
wenzelm@60642
  2732
wenzelm@60983
  2733
*** System ***
wenzelm@60983
  2734
wenzelm@62525
  2735
* Command-line tool "isabelle console" enables print mode "ASCII".
wenzelm@61958
  2736
wenzelm@62017
  2737
* Command-line tool "isabelle update_then" expands old Isar command
wenzelm@62017
  2738
conflations:
wenzelm@62017
  2739
wenzelm@62017
  2740
    hence  ~>  then have
wenzelm@62017
  2741
    thus   ~>  then show
wenzelm@62017
  2742
wen