NEWS
author wenzelm
Mon Jul 02 16:26:11 2018 +0200 (11 months ago)
changeset 68568 cf01d04e94d7
parent 68558 7aae213d9e69
child 68630 c55f6f0b3854
child 68639 357fca99a65a
permissions -rw-r--r--
more NEWS;
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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 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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* 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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*** 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
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element in a list to all following elements, not just the next one.
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* Theory HOL.List syntax:
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  - filter-syntax "[x <- xs. P]" is no longer output syntax, but only
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    input syntax
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  - list comprehension syntax now supports tuple patterns in "pat <- xs"
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* Theory Map: "empty" must now be qualified as "Map.empty".
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* Removed nat-int transfer machinery. Rare INCOMPATIBILITY.
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* Fact mod_mult_self4 (on nat) renamed to Suc_mod_mult_self3, to avoid
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clash with fact mod_mult_self4 (on more generic semirings).
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INCOMPATIBILITY.
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* Eliminated some theorem aliasses:
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   349
  even_times_iff ~> even_mult_iff
haftmann@68100
   350
  mod_2_not_eq_zero_eq_one_nat ~> not_mod_2_eq_0_eq_1
haftmann@68100
   351
  even_of_nat ~> even_int_iff
haftmann@68100
   352
haftmann@68100
   353
INCOMPATIBILITY.
haftmann@68100
   354
haftmann@68157
   355
* Eliminated some theorem duplicate variations:
wenzelm@68393
   356
wenzelm@68393
   357
  - dvd_eq_mod_eq_0_numeral can be replaced by dvd_eq_mod_eq_0
wenzelm@68393
   358
  - mod_Suc_eq_Suc_mod can be replaced by mod_Suc
wenzelm@68393
   359
  - mod_Suc_eq_Suc_mod [symmetrict] can be replaced by mod_simps
wenzelm@68393
   360
  - mod_eq_0_iff can be replaced by mod_eq_0_iff_dvd and dvd_def
wenzelm@68393
   361
  - the witness of mod_eqD can be given directly as "_ div _"
haftmann@68157
   362
haftmann@68157
   363
INCOMPATIBILITY.
haftmann@68157
   364
haftmann@68260
   365
* Classical setup: Assumption "m mod d = 0" (for m d :: nat) is no
wenzelm@68393
   366
longer aggresively destroyed to "\<exists>q. m = d * q". INCOMPATIBILITY, adding
wenzelm@68393
   367
"elim!: dvd" to classical proof methods in most situations restores
wenzelm@68393
   368
broken proofs.
wenzelm@68393
   369
wenzelm@68393
   370
* Theory HOL-Library.Conditional_Parametricity provides command
wenzelm@68393
   371
'parametric_constant' for proving parametricity of non-recursive
wenzelm@68393
   372
definitions. For constants that are not fully parametric the command
wenzelm@68393
   373
will infer conditions on relations (e.g., bi_unique, bi_total, or type
wenzelm@68393
   374
class conditions such as "respects 0") sufficient for parametricity. See
wenzelm@68393
   375
theory HOL-ex.Conditional_Parametricity_Examples for some examples.
wenzelm@68393
   376
wenzelm@68393
   377
* Theory HOL-Library.Code_Lazy provides a new preprocessor for the code
wenzelm@68393
   378
generator to generate code for algebraic types with lazy evaluation
wenzelm@68393
   379
semantics even in call-by-value target languages. See theory
wenzelm@68393
   380
HOL-Codegenerator_Test.Code_Lazy_Test for some examples.
wenzelm@68393
   381
wenzelm@68393
   382
* Theory HOL-Library.Landau_Symbols has been moved here from AFP.
wenzelm@68393
   383
wenzelm@68393
   384
* Theory HOL-Library.Old_Datatype no longer provides the legacy command
wenzelm@68393
   385
'old_datatype'. INCOMPATIBILITY.
wenzelm@68393
   386
wenzelm@68393
   387
* Theory HOL-Computational_Algebra.Polynomial_Factorial does not provide
wenzelm@68393
   388
instances of rat, real, complex as factorial rings etc. Import
wenzelm@68393
   389
HOL-Computational_Algebra.Field_as_Ring explicitly in case of need.
wenzelm@68393
   390
INCOMPATIBILITY.
wenzelm@68393
   391
wenzelm@68393
   392
* Session HOL-Algebra: renamed (^) to [^] to avoid conflict with new
wenzelm@68393
   393
infix/prefix notation.
wenzelm@68393
   394
wenzelm@68543
   395
* Session HOL-Algebra: revamped with much new material. The set of
wenzelm@68543
   396
isomorphisms between two groups is now denoted iso rather than iso_set.
wenzelm@68543
   397
INCOMPATIBILITY.
wenzelm@68543
   398
wenzelm@68543
   399
* Session HOL-Analysis: the Arg function now respects the same interval
wenzelm@68543
   400
as Ln, namely (-pi,pi]; the old Arg function has been renamed Arg2pi.
lp15@68499
   401
INCOMPATIBILITY.
lp15@68499
   402
wenzelm@68548
   403
* Session HOL-Analysis: the functions zorder, zer_poly, porder and
wenzelm@68548
   404
pol_poly have been redefined. All related lemmas have been reworked.
wl302@68531
   405
INCOMPATIBILITY.
wl302@68531
   406
wenzelm@68393
   407
* Session HOL-Analysis: infinite products, Moebius functions, the
wenzelm@68393
   408
Riemann mapping theorem, the Vitali covering theorem,
wenzelm@68393
   409
change-of-variables results for integration and measures.
haftmann@68260
   410
wenzelm@68545
   411
* Session HOL-Types_To_Sets: more tool support (unoverload_type combines
wenzelm@68545
   412
internalize_sorts and unoverload) and larger experimental application
wenzelm@68545
   413
(type based linear algebra transferred to linear algebra on subspaces).
immler@68522
   414
wenzelm@66651
   415
wenzelm@68116
   416
*** ML ***
wenzelm@68116
   417
wenzelm@68116
   418
* Operation Export.export emits theory exports (arbitrary blobs), which
wenzelm@68116
   419
are stored persistently in the session build database.
wenzelm@68116
   420
wenzelm@68276
   421
* Command 'ML_export' exports ML toplevel bindings to the global
wenzelm@68276
   422
bootstrap environment of the ML process. This allows ML evaluation
wenzelm@68276
   423
without a formal theory context, e.g. in command-line tools like
wenzelm@68276
   424
"isabelle process".
wenzelm@68276
   425
wenzelm@68116
   426
wenzelm@66729
   427
*** System ***
wenzelm@66729
   428
wenzelm@67088
   429
* Mac OS X 10.10 Yosemite is now the baseline version; Mavericks is no
wenzelm@67088
   430
longer supported.
wenzelm@67088
   431
wenzelm@68393
   432
* Linux and Windows/Cygwin is for x86_64 only, old 32bit platform
wenzelm@68393
   433
support has been discontinued.
wenzelm@68393
   434
wenzelm@66906
   435
* Java runtime is for x86_64 only. Corresponding Isabelle settings have
wenzelm@66906
   436
been renamed to ISABELLE_TOOL_JAVA_OPTIONS and JEDIT_JAVA_OPTIONS,
wenzelm@66906
   437
instead of former 32/64 variants. INCOMPATIBILITY.
wenzelm@66906
   438
wenzelm@68003
   439
* Old settings ISABELLE_PLATFORM and ISABELLE_WINDOWS_PLATFORM should be
wenzelm@68003
   440
phased out due to unclear preference of 32bit vs. 64bit architecture.
wenzelm@68003
   441
Explicit GNU bash expressions are now preferred, for example (with
wenzelm@68003
   442
quotes):
wenzelm@68003
   443
wenzelm@68003
   444
  #Posix executables (Unix or Cygwin), with preference for 64bit
wenzelm@68003
   445
  "${ISABELLE_PLATFORM64:-$ISABELLE_PLATFORM32}"
wenzelm@68003
   446
wenzelm@68003
   447
  #native Windows or Unix executables, with preference for 64bit
wenzelm@68003
   448
  "${ISABELLE_WINDOWS_PLATFORM64:-${ISABELLE_WINDOWS_PLATFORM32:-${ISABELLE_PLATFORM64:-$ISABELLE_PLATFORM32}}}"
wenzelm@68003
   449
wenzelm@68003
   450
  #native Windows (32bit) or Unix executables (preference for 64bit)
wenzelm@68003
   451
  "${ISABELLE_WINDOWS_PLATFORM32:-${ISABELLE_PLATFORM64:-$ISABELLE_PLATFORM32}}"
wenzelm@68003
   452
wenzelm@66745
   453
* Command-line tool "isabelle build" supports new options:
wenzelm@66745
   454
  - option -B NAME: include session NAME and all descendants
wenzelm@66745
   455
  - option -S: only observe changes of sources, not heap images
wenzelm@66841
   456
  - option -f: forces a fresh build
wenzelm@66737
   457
wenzelm@66843
   458
* Command-line tool "isabelle build" takes "condition" options with the
wenzelm@66843
   459
corresponding environment values into account, when determining the
wenzelm@66843
   460
up-to-date status of a session.
wenzelm@66843
   461
wenzelm@68393
   462
* The command-line tool "dump" dumps information from the cumulative
wenzelm@68393
   463
PIDE session database: many sessions may be loaded into a given logic
wenzelm@68393
   464
image, results from all loaded theories are written to the output
wenzelm@68393
   465
directory.
wenzelm@68393
   466
wenzelm@66851
   467
* Command-line tool "isabelle imports -I" also reports actual session
wenzelm@66851
   468
imports. This helps to minimize the session dependency graph.
wenzelm@66851
   469
wenzelm@68393
   470
* The command-line tool "export" and 'export_files' in session ROOT
wenzelm@68393
   471
entries retrieve theory exports from the session build database.
wenzelm@68393
   472
wenzelm@68393
   473
* The command-line tools "isabelle server" and "isabelle client" provide
wenzelm@68393
   474
access to the Isabelle Server: it supports responsive session management
wenzelm@68393
   475
and concurrent use of theories, based on Isabelle/PIDE infrastructure.
wenzelm@68393
   476
See also the "system" manual.
wenzelm@68393
   477
wenzelm@68393
   478
* The command-line tool "isabelle update_comments" normalizes formal
wenzelm@68393
   479
comments in outer syntax as follows: \<comment> \<open>text\<close> (whith a single space to
wenzelm@68393
   480
approximate the appearance in document output). This is more specific
wenzelm@68393
   481
than former "isabelle update_cartouches -c": the latter tool option has
wenzelm@68393
   482
been discontinued.
wenzelm@68393
   483
wenzelm@68393
   484
* The command-line tool "isabelle mkroot" now always produces a document
wenzelm@68393
   485
outline: its options have been adapted accordingly. INCOMPATIBILITY.
wenzelm@68393
   486
wenzelm@68393
   487
* The command-line tool "isabelle mkroot -I" initializes a Mercurial
wenzelm@68393
   488
repository for the generated session files.
wenzelm@68393
   489
wenzelm@68523
   490
* Settings ISABELLE_HEAPS + ISABELLE_BROWSER_INFO (or
wenzelm@68523
   491
ISABELLE_HEAPS_SYSTEM + ISABELLE_BROWSER_INFO_SYSTEM in "system build
wenzelm@68523
   492
mode") determine the directory locations of the main build artefacts --
wenzelm@68523
   493
instead of hard-wired directories in ISABELLE_HOME_USER (or
wenzelm@68523
   494
ISABELLE_HOME).
wenzelm@68523
   495
wenzelm@68393
   496
* Settings ISABELLE_PATH and ISABELLE_OUTPUT have been discontinued:
wenzelm@68393
   497
heap images and session databases are always stored in
wenzelm@68523
   498
$ISABELLE_HEAPS/$ML_IDENTIFIER (command-line default) or
wenzelm@68523
   499
$ISABELLE_HEAPS_SYSTEM/$ML_IDENTIFIER (main Isabelle application or
wenzelm@68393
   500
"isabelle jedit -s" or "isabelle build -s").
wenzelm@67099
   501
wenzelm@67199
   502
* ISABELLE_LATEX and ISABELLE_PDFLATEX now include platform-specific
wenzelm@67199
   503
options for improved error reporting. Potential INCOMPATIBILITY with
wenzelm@67199
   504
unusual LaTeX installations, may have to adapt these settings.
wenzelm@67199
   505
wenzelm@68393
   506
* Update to Poly/ML 5.7.1 with slightly improved performance and PIDE
wenzelm@68393
   507
markup for identifier bindings. It now uses The GNU Multiple Precision
wenzelm@67591
   508
Arithmetic Library (libgmp) on all platforms, notably Mac OS X with
wenzelm@67591
   509
32/64 bit.
wenzelm@67591
   510
wenzelm@67099
   511
wenzelm@66729
   512
wenzelm@66472
   513
New in Isabelle2017 (October 2017)
wenzelm@66472
   514
----------------------------------
wenzelm@64439
   515
wenzelm@64986
   516
*** General ***
wenzelm@64986
   517
wenzelm@66238
   518
* Experimental support for Visual Studio Code (VSCode) as alternative
wenzelm@66238
   519
Isabelle/PIDE front-end, see also
wenzelm@66599
   520
https://marketplace.visualstudio.com/items?itemName=makarius.Isabelle2017
wenzelm@66238
   521
wenzelm@66238
   522
VSCode is a new type of application that continues the concepts of
wenzelm@66238
   523
"programmer's editor" and "integrated development environment" towards
wenzelm@66238
   524
fully semantic editing and debugging -- in a relatively light-weight
wenzelm@66238
   525
manner. Thus it fits nicely on top of the Isabelle/PIDE infrastructure.
wenzelm@66238
   526
Technically, VSCode is based on the Electron application framework
wenzelm@66238
   527
(Node.js + Chromium browser + V8), which is implemented in JavaScript
wenzelm@66238
   528
and TypeScript, while Isabelle/VSCode mainly consists of Isabelle/Scala
wenzelm@66238
   529
modules around a Language Server implementation.
wenzelm@66238
   530
wenzelm@65504
   531
* Theory names are qualified by the session name that they belong to.
wenzelm@66454
   532
This affects imports, but not the theory name space prefix (which is
wenzelm@66454
   533
just the theory base name as before).
wenzelm@66454
   534
wenzelm@66454
   535
In order to import theories from other sessions, the ROOT file format
wenzelm@66454
   536
provides a new 'sessions' keyword. In contrast, a theory that is
wenzelm@66454
   537
imported in the old-fashioned manner via an explicit file-system path
wenzelm@66472
   538
belongs to the current session, and might cause theory name conflicts
wenzelm@66454
   539
later on. Theories that are imported from other sessions are excluded
wenzelm@66454
   540
from the current session document. The command-line tool "isabelle
wenzelm@66454
   541
imports" helps to update theory imports.
wenzelm@66454
   542
wenzelm@65451
   543
* The main theory entry points for some non-HOL sessions have changed,
wenzelm@65451
   544
to avoid confusion with the global name "Main" of the session HOL. This
wenzelm@65451
   545
leads to the follow renamings:
wenzelm@65451
   546
wenzelm@65451
   547
  CTT/Main.thy    ~>  CTT/CTT.thy
wenzelm@65451
   548
  ZF/Main.thy     ~>  ZF/ZF.thy
wenzelm@65451
   549
  ZF/Main_ZF.thy  ~>  ZF/ZF.thy
wenzelm@65451
   550
  ZF/Main_ZFC.thy ~>  ZF/ZFC.thy
wenzelm@65451
   551
  ZF/ZF.thy       ~>  ZF/ZF_Base.thy
wenzelm@65451
   552
wenzelm@65451
   553
INCOMPATIBILITY.
wenzelm@65451
   554
wenzelm@66472
   555
* Commands 'alias' and 'type_alias' introduce aliases for constants and
wenzelm@66472
   556
type constructors, respectively. This allows adhoc changes to name-space
wenzelm@66472
   557
accesses within global or local theory contexts, e.g. within a 'bundle'.
wenzelm@66472
   558
wenzelm@64986
   559
* Document antiquotations @{prf} and @{full_prf} output proof terms
wenzelm@64986
   560
(again) in the same way as commands 'prf' and 'full_prf'.
wenzelm@64986
   561
wenzelm@65055
   562
* Computations generated by the code generator can be embedded directly
wenzelm@65055
   563
into ML, alongside with @{code} antiquotations, using the following
wenzelm@65055
   564
antiquotations:
wenzelm@65055
   565
wenzelm@65055
   566
  @{computation ... terms: ... datatypes: ...} :
wenzelm@65055
   567
    ((term -> term) -> 'ml option -> 'a) -> Proof.context -> term -> 'a
wenzelm@65055
   568
  @{computation_conv ... terms: ... datatypes: ...} :
wenzelm@65055
   569
    (Proof.context -> 'ml -> conv) -> Proof.context -> conv
wenzelm@65045
   570
  @{computation_check terms: ... datatypes: ...} : Proof.context -> conv
haftmann@65041
   571
wenzelm@65055
   572
See src/HOL/ex/Computations.thy,
wenzelm@65055
   573
src/HOL/Decision_Procs/Commutative_Ring.thy and
wenzelm@65055
   574
src/HOL/Decision_Procs/Reflective_Field.thy for examples and the
wenzelm@65055
   575
tutorial on code generation.
haftmann@65041
   576
wenzelm@64986
   577
wenzelm@64602
   578
*** Prover IDE -- Isabelle/Scala/jEdit ***
wenzelm@64602
   579
wenzelm@66472
   580
* Session-qualified theory imports allow the Prover IDE to process
wenzelm@66472
   581
arbitrary theory hierarchies independently of the underlying logic
wenzelm@66472
   582
session image (e.g. option "isabelle jedit -l"), but the directory
wenzelm@66472
   583
structure needs to be known in advance (e.g. option "isabelle jedit -d"
wenzelm@66472
   584
or a line in the file $ISABELLE_HOME_USER/ROOTS).
wenzelm@64602
   585
wenzelm@64842
   586
* The PIDE document model maintains file content independently of the
wenzelm@64842
   587
status of jEdit editor buffers. Reloading jEdit buffers no longer causes
wenzelm@64842
   588
changes of formal document content. Theory dependencies are always
wenzelm@64842
   589
resolved internally, without the need for corresponding editor buffers.
wenzelm@64842
   590
The system option "jedit_auto_load" has been discontinued: it is
wenzelm@64842
   591
effectively always enabled.
wenzelm@64842
   592
wenzelm@64867
   593
* The Theories dockable provides a "Purge" button, in order to restrict
wenzelm@64867
   594
the document model to theories that are required for open editor
wenzelm@64867
   595
buffers.
wenzelm@64867
   596
wenzelm@66424
   597
* The Theories dockable indicates the overall status of checking of each
wenzelm@66424
   598
entry. When all forked tasks of a theory are finished, the border is
wenzelm@66424
   599
painted with thick lines; remaining errors in this situation are
wenzelm@66424
   600
represented by a different border color.
wenzelm@66424
   601
wenzelm@66472
   602
* Automatic indentation is more careful to avoid redundant spaces in
wenzelm@66472
   603
intermediate situations. Keywords are indented after input (via typed
wenzelm@66472
   604
characters or completion); see also option "jedit_indent_input".
wenzelm@66472
   605
wenzelm@66472
   606
* Action "isabelle.preview" opens an HTML preview of the current theory
wenzelm@66472
   607
document in the default web browser.
wenzelm@66472
   608
wenzelm@66574
   609
* Command-line invocation "isabelle jedit -R -l LOGIC" opens the ROOT
wenzelm@66574
   610
entry of the specified logic session in the editor, while its parent is
wenzelm@66574
   611
used for formal checking.
wenzelm@66472
   612
wenzelm@66462
   613
* The main Isabelle/jEdit plugin may be restarted manually (using the
wenzelm@66462
   614
jEdit Plugin Manager), as long as the "Isabelle Base" plugin remains
wenzelm@66462
   615
enabled at all times.
wenzelm@66462
   616
wenzelm@66472
   617
* Update to current jedit-5.4.0.
wenzelm@65329
   618
wenzelm@64602
   619
haftmann@66149
   620
*** Pure ***
haftmann@66149
   621
haftmann@66149
   622
* Deleting the last code equations for a particular function using
haftmann@66149
   623
[code del] results in function with no equations (runtime abort) rather
wenzelm@66472
   624
than an unimplemented function (generation time abort). Use explicit
haftmann@66665
   625
[[code drop:]] to enforce the latter. Minor INCOMPATIBILITY.
haftmann@66149
   626
haftmann@66310
   627
* Proper concept of code declarations in code.ML:
wenzelm@66472
   628
  - Regular code declarations act only on the global theory level, being
wenzelm@66472
   629
    ignored with warnings if syntactically malformed.
wenzelm@66472
   630
  - Explicitly global code declarations yield errors if syntactically
wenzelm@66472
   631
    malformed.
wenzelm@66472
   632
  - Default code declarations are silently ignored if syntactically
wenzelm@66472
   633
    malformed.
haftmann@66310
   634
Minor INCOMPATIBILITY.
haftmann@66310
   635
wenzelm@66472
   636
* Clarified and standardized internal data bookkeeping of code
wenzelm@66472
   637
declarations: history of serials allows to track potentially
wenzelm@66472
   638
non-monotonous declarations appropriately. Minor INCOMPATIBILITY.
haftmann@66310
   639
haftmann@66149
   640
haftmann@64593
   641
*** HOL ***
haftmann@64593
   642
blanchet@66614
   643
* The Nunchaku model finder is now part of "Main".
blanchet@66614
   644
wenzelm@66472
   645
* SMT module:
wenzelm@66472
   646
  - A new option, 'smt_nat_as_int', has been added to translate 'nat' to
wenzelm@66472
   647
    'int' and benefit from the SMT solver's theory reasoning. It is
wenzelm@66472
   648
    disabled by default.
wenzelm@66472
   649
  - The legacy module "src/HOL/Library/Old_SMT.thy" has been removed.
wenzelm@66472
   650
  - Several small issues have been rectified in the 'smt' command.
wenzelm@66472
   651
wenzelm@66472
   652
* (Co)datatype package: The 'size_gen_o_map' lemma is no longer
wenzelm@66472
   653
generated for datatypes with type class annotations. As a result, the
wenzelm@66472
   654
tactic that derives it no longer fails on nested datatypes. Slight
wenzelm@66472
   655
INCOMPATIBILITY.
eberlm@66450
   656
haftmann@66345
   657
* Command and antiquotation "value" with modified default strategy:
haftmann@66345
   658
terms without free variables are always evaluated using plain evaluation
wenzelm@66472
   659
only, with no fallback on normalization by evaluation. Minor
wenzelm@66472
   660
INCOMPATIBILITY.
eberlm@65956
   661
wenzelm@65552
   662
* Theories "GCD" and "Binomial" are already included in "Main" (instead
wenzelm@65575
   663
of "Complex_Main").
wenzelm@65552
   664
haftmann@65170
   665
* Constant "surj" is a full input/output abbreviation (again).
haftmann@65170
   666
Minor INCOMPATIBILITY.
haftmann@65170
   667
haftmann@64632
   668
* Dropped aliasses RangeP, DomainP for Rangep, Domainp respectively.
haftmann@64632
   669
INCOMPATIBILITY.
haftmann@64632
   670
wenzelm@66472
   671
* Renamed ii to imaginary_unit in order to free up ii as a variable
wenzelm@66472
   672
name. The syntax \<i> remains available. INCOMPATIBILITY.
wenzelm@66472
   673
wenzelm@66472
   674
* Dropped abbreviations transP, antisymP, single_valuedP; use constants
wenzelm@66472
   675
transp, antisymp, single_valuedp instead. INCOMPATIBILITY.
wenzelm@66472
   676
wenzelm@66472
   677
* Constant "subseq" in Topological_Spaces has been removed -- it is
wenzelm@66472
   678
subsumed by "strict_mono". Some basic lemmas specific to "subseq" have
wenzelm@66472
   679
been renamed accordingly, e.g. "subseq_o" -> "strict_mono_o" etc.
wenzelm@66472
   680
wenzelm@66472
   681
* Theory List: "sublist" renamed to "nths" in analogy with "nth", and
wenzelm@66472
   682
"sublisteq" renamed to "subseq". Minor INCOMPATIBILITY.
wenzelm@66472
   683
wenzelm@66472
   684
* Theory List: new generic function "sorted_wrt".
wenzelm@66472
   685
wenzelm@66472
   686
* Named theorems mod_simps covers various congruence rules concerning
wenzelm@66472
   687
mod, replacing former zmod_simps. INCOMPATIBILITY.
haftmann@64787
   688
haftmann@64593
   689
* Swapped orientation of congruence rules mod_add_left_eq,
haftmann@64593
   690
mod_add_right_eq, mod_add_eq, mod_mult_left_eq, mod_mult_right_eq,
haftmann@64593
   691
mod_mult_eq, mod_minus_eq, mod_diff_left_eq, mod_diff_right_eq,
wenzelm@66472
   692
mod_diff_eq. INCOMPATIBILITY.
haftmann@64593
   693
haftmann@64593
   694
* Generalized some facts:
blanchet@64876
   695
    measure_induct_rule
blanchet@64876
   696
    measure_induct
haftmann@64593
   697
    zminus_zmod ~> mod_minus_eq
haftmann@64593
   698
    zdiff_zmod_left ~> mod_diff_left_eq
haftmann@64593
   699
    zdiff_zmod_right ~> mod_diff_right_eq
haftmann@64593
   700
    zmod_eq_dvd_iff ~> mod_eq_dvd_iff
haftmann@64593
   701
INCOMPATIBILITY.
haftmann@64593
   702
wenzelm@66472
   703
* Algebraic type class hierarchy of euclidean (semi)rings in HOL:
wenzelm@66472
   704
euclidean_(semi)ring, euclidean_(semi)ring_cancel,
wenzelm@66472
   705
unique_euclidean_(semi)ring; instantiation requires provision of a
wenzelm@66472
   706
euclidean size.
wenzelm@66472
   707
wenzelm@66472
   708
* Theory "HOL-Number_Theory.Euclidean_Algorithm" has been reworked:
wenzelm@66472
   709
  - Euclidean induction is available as rule eucl_induct.
wenzelm@66472
   710
  - Constants Euclidean_Algorithm.gcd, Euclidean_Algorithm.lcm,
wenzelm@66472
   711
    Euclidean_Algorithm.Gcd and Euclidean_Algorithm.Lcm allow
wenzelm@66472
   712
    easy instantiation of euclidean (semi)rings as GCD (semi)rings.
wenzelm@66472
   713
  - Coefficients obtained by extended euclidean algorithm are
wenzelm@66472
   714
    available as "bezout_coefficients".
wenzelm@66472
   715
INCOMPATIBILITY.
wenzelm@66472
   716
wenzelm@66472
   717
* Theory "Number_Theory.Totient" introduces basic notions about Euler's
wenzelm@66472
   718
totient function previously hidden as solitary example in theory
wenzelm@66472
   719
Residues. Definition changed so that "totient 1 = 1" in agreement with
wenzelm@66472
   720
the literature. Minor INCOMPATIBILITY.
wenzelm@66472
   721
wenzelm@66542
   722
* New styles in theory "HOL-Library.LaTeXsugar":
nipkow@66541
   723
  - "dummy_pats" for printing equations with "_" on the lhs;
nipkow@66541
   724
  - "eta_expand" for printing eta-expanded terms.
nipkow@66541
   725
wenzelm@66472
   726
* Theory "HOL-Library.Permutations": theorem bij_swap_ompose_bij has
wenzelm@66472
   727
been renamed to bij_swap_compose_bij. INCOMPATIBILITY.
wenzelm@66472
   728
lp15@66643
   729
* New theory "HOL-Library.Going_To_Filter" providing the "f going_to F"
eberlm@66488
   730
filter for describing points x such that f(x) is in the filter F.
eberlm@66488
   731
eberlm@66480
   732
* Theory "HOL-Library.Formal_Power_Series": constants X/E/L/F have been
eberlm@66480
   733
renamed to fps_X/fps_exp/fps_ln/fps_hypergeo to avoid polluting the name
wenzelm@66472
   734
space. INCOMPATIBILITY.
wenzelm@66472
   735
wenzelm@66472
   736
* Theory "HOL-Library.FinFun" has been moved to AFP (again).
wenzelm@66472
   737
INCOMPATIBILITY.
wenzelm@66472
   738
wenzelm@66472
   739
* Theory "HOL-Library.FuncSet": some old and rarely used ASCII
wenzelm@66472
   740
replacement syntax has been removed. INCOMPATIBILITY, standard syntax
wenzelm@66472
   741
with symbols should be used instead. The subsequent commands help to
wenzelm@66472
   742
reproduce the old forms, e.g. to simplify porting old theories:
wenzelm@66472
   743
wenzelm@66472
   744
syntax (ASCII)
wenzelm@66472
   745
  "_PiE" :: "pttrn \<Rightarrow> 'a set \<Rightarrow> 'b set \<Rightarrow> ('a \<Rightarrow> 'b) set"  ("(3PIE _:_./ _)" 10)
wenzelm@66472
   746
  "_Pi"  :: "pttrn \<Rightarrow> 'a set \<Rightarrow> 'b set \<Rightarrow> ('a \<Rightarrow> 'b) set"  ("(3PI _:_./ _)" 10)
wenzelm@66472
   747
  "_lam" :: "pttrn \<Rightarrow> 'a set \<Rightarrow> 'a \<Rightarrow> 'b \<Rightarrow> ('a \<Rightarrow> 'b)"  ("(3%_:_./ _)" [0,0,3] 3)
wenzelm@66472
   748
wenzelm@66472
   749
* Theory "HOL-Library.Multiset": the simprocs on subsets operators of
wenzelm@66472
   750
multisets have been renamed:
wenzelm@66472
   751
wenzelm@66472
   752
  msetless_cancel_numerals ~> msetsubset_cancel
wenzelm@66472
   753
  msetle_cancel_numerals ~> msetsubset_eq_cancel
wenzelm@66472
   754
wenzelm@66472
   755
INCOMPATIBILITY.
wenzelm@66472
   756
lars@66481
   757
* Theory "HOL-Library.Pattern_Aliases" provides input and output syntax
lars@66481
   758
for pattern aliases as known from Haskell, Scala and ML.
blanchet@65515
   759
Andreas@66563
   760
* Theory "HOL-Library.Uprod" formalizes the type of unordered pairs.
Andreas@66563
   761
wenzelm@64898
   762
* Session HOL-Analysis: more material involving arcs, paths, covering
wenzelm@66650
   763
spaces, innessential maps, retracts, infinite products, simplicial
wenzelm@66650
   764
complexes. Baire Category theorem. Major results include the Jordan
wenzelm@66650
   765
Curve Theorem and the Great Picard Theorem.
wenzelm@66472
   766
wenzelm@66472
   767
* Session HOL-Algebra has been extended by additional lattice theory:
wenzelm@66472
   768
the Knaster-Tarski fixed point theorem and Galois Connections.
wenzelm@66472
   769
wenzelm@66472
   770
* Sessions HOL-Computational_Algebra and HOL-Number_Theory: new notions
wenzelm@66472
   771
of squarefreeness, n-th powers, and prime powers.
wenzelm@66472
   772
wenzelm@66472
   773
* Session "HOL-Computional_Algebra" covers many previously scattered
wenzelm@66472
   774
theories, notably Euclidean_Algorithm, Factorial_Ring,
wenzelm@66472
   775
Formal_Power_Series, Fraction_Field, Fundamental_Theorem_Algebra,
wenzelm@66472
   776
Normalized_Fraction, Polynomial_FPS, Polynomial, Primes. Minor
wenzelm@66472
   777
INCOMPATIBILITY.
Mathias@65027
   778
wenzelm@60331
   779
wenzelm@64844
   780
*** System ***
wenzelm@64844
   781
wenzelm@66474
   782
* Isabelle/Scala: the SQL module supports access to relational
wenzelm@66474
   783
databases, either as plain file (SQLite) or full-scale server
wenzelm@66474
   784
(PostgreSQL via local port or remote ssh connection).
wenzelm@66474
   785
wenzelm@66474
   786
* Results of "isabelle build" are recorded as SQLite database (i.e.
wenzelm@66474
   787
"Application File Format" in the sense of
wenzelm@66474
   788
https://www.sqlite.org/appfileformat.html). This allows systematic
wenzelm@66474
   789
access via operations from module Sessions.Store in Isabelle/Scala.
wenzelm@66474
   790
wenzelm@66472
   791
* System option "parallel_proofs" is 1 by default (instead of more
wenzelm@66472
   792
aggressive 2). This requires less heap space and avoids burning parallel
wenzelm@66472
   793
CPU cycles, while full subproof parallelization is enabled for repeated
wenzelm@66472
   794
builds (according to parallel_subproofs_threshold).
wenzelm@65072
   795
wenzelm@65448
   796
* System option "record_proofs" allows to change the global
wenzelm@65448
   797
Proofterm.proofs variable for a session. Regular values are are 0, 1, 2;
wenzelm@65448
   798
a negative value means the current state in the ML heap image remains
wenzelm@65448
   799
unchanged.
wenzelm@65448
   800
wenzelm@66472
   801
* Isabelle settings variable ISABELLE_SCALA_BUILD_OPTIONS has been
wenzelm@66472
   802
renamed to ISABELLE_SCALAC_OPTIONS. Rare INCOMPATIBILITY.
wenzelm@66472
   803
wenzelm@66472
   804
* Isabelle settings variables ISABELLE_WINDOWS_PLATFORM,
wenzelm@66472
   805
ISABELLE_WINDOWS_PLATFORM32, ISABELLE_WINDOWS_PLATFORM64 indicate the
wenzelm@66472
   806
native Windows platform (independently of the Cygwin installation). This
wenzelm@66472
   807
is analogous to ISABELLE_PLATFORM, ISABELLE_PLATFORM32,
wenzelm@66472
   808
ISABELLE_PLATFORM64.
wenzelm@65557
   809
wenzelm@66786
   810
* Command-line tool "isabelle build_docker" builds a Docker image from
wenzelm@66786
   811
the Isabelle application bundle for Linux. See also
wenzelm@66786
   812
https://hub.docker.com/r/makarius/isabelle
wenzelm@66786
   813
wenzelm@66473
   814
* Command-line tool "isabelle vscode_server" provides a Language Server
wenzelm@66473
   815
Protocol implementation, e.g. for the Visual Studio Code editor. It
wenzelm@66473
   816
serves as example for alternative PIDE front-ends.
wenzelm@66473
   817
wenzelm@66472
   818
* Command-line tool "isabelle imports" helps to maintain theory imports
wenzelm@66671
   819
wrt. session structure. Examples for the main Isabelle distribution:
wenzelm@66472
   820
wenzelm@66472
   821
  isabelle imports -I -a
wenzelm@66472
   822
  isabelle imports -U -a
wenzelm@66472
   823
  isabelle imports -U -i -a
wenzelm@66472
   824
  isabelle imports -M -a -d '~~/src/Benchmarks'
wenzelm@66472
   825
wenzelm@64844
   826
wenzelm@67099
   827
wenzelm@64072
   828
New in Isabelle2016-1 (December 2016)
wenzelm@64072
   829
-------------------------------------
wenzelm@62216
   830
wenzelm@62440
   831
*** General ***
wenzelm@62440
   832
wenzelm@64390
   833
* Splitter in proof methods "simp", "auto" and friends:
wenzelm@64390
   834
  - The syntax "split add" has been discontinued, use plain "split",
wenzelm@64390
   835
    INCOMPATIBILITY.
wenzelm@64390
   836
  - For situations with many conditional or case expressions, there is
wenzelm@64390
   837
    an alternative splitting strategy that can be much faster. It is
wenzelm@64390
   838
    selected by writing "split!" instead of "split". It applies safe
wenzelm@64390
   839
    introduction and elimination rules after each split rule. As a
wenzelm@64390
   840
    result the subgoal may be split into several subgoals.
wenzelm@64390
   841
wenzelm@63273
   842
* Command 'bundle' provides a local theory target to define a bundle
wenzelm@63273
   843
from the body of specification commands (such as 'declare',
wenzelm@63273
   844
'declaration', 'notation', 'lemmas', 'lemma'). For example:
wenzelm@63273
   845
wenzelm@63273
   846
bundle foo
wenzelm@63273
   847
begin
wenzelm@63273
   848
  declare a [simp]
wenzelm@63273
   849
  declare b [intro]
wenzelm@63273
   850
end
wenzelm@63272
   851
wenzelm@63282
   852
* Command 'unbundle' is like 'include', but works within a local theory
wenzelm@63282
   853
context. Unlike "context includes ... begin", the effect of 'unbundle'
wenzelm@63282
   854
on the target context persists, until different declarations are given.
wenzelm@63282
   855
wenzelm@63977
   856
* Simplified outer syntax: uniform category "name" includes long
wenzelm@63977
   857
identifiers. Former "xname" / "nameref" / "name reference" has been
wenzelm@63977
   858
discontinued.
wenzelm@63977
   859
wenzelm@63977
   860
* Embedded content (e.g. the inner syntax of types, terms, props) may be
wenzelm@63977
   861
delimited uniformly via cartouches. This works better than old-fashioned
wenzelm@63977
   862
quotes when sub-languages are nested.
wenzelm@63977
   863
wenzelm@63977
   864
* Mixfix annotations support general block properties, with syntax
wenzelm@63977
   865
"(\<open>x=a y=b z \<dots>\<close>". Notable property names are "indent", "consistent",
wenzelm@63977
   866
"unbreakable", "markup". The existing notation "(DIGITS" is equivalent
wenzelm@63977
   867
to "(\<open>indent=DIGITS\<close>". The former notation "(00" for unbreakable blocks
wenzelm@63977
   868
is superseded by "(\<open>unbreabable\<close>" --- rare INCOMPATIBILITY.
nipkow@63650
   869
wenzelm@63383
   870
* Proof method "blast" is more robust wrt. corner cases of Pure
wenzelm@63383
   871
statements without object-logic judgment.
wenzelm@63383
   872
wenzelm@63624
   873
* Commands 'prf' and 'full_prf' are somewhat more informative (again):
wenzelm@63977
   874
proof terms are reconstructed and cleaned from administrative thm nodes.
wenzelm@63977
   875
wenzelm@63977
   876
* Code generator: config option "code_timing" triggers measurements of
wenzelm@63977
   877
different phases of code generation. See src/HOL/ex/Code_Timing.thy for
wenzelm@63977
   878
examples.
wenzelm@63977
   879
wenzelm@63977
   880
* Code generator: implicits in Scala (stemming from type class
wenzelm@63977
   881
instances) are generated into companion object of corresponding type
wenzelm@63977
   882
class, to resolve some situations where ambiguities may occur.
wenzelm@63977
   883
wenzelm@64390
   884
* Solve direct: option "solve_direct_strict_warnings" gives explicit
wenzelm@64390
   885
warnings for lemma statements with trivial proofs.
haftmann@64013
   886
wenzelm@64602
   887
wenzelm@62904
   888
*** Prover IDE -- Isabelle/Scala/jEdit ***
wenzelm@62904
   889
wenzelm@64527
   890
* More aggressive flushing of machine-generated input, according to
wenzelm@64527
   891
system option editor_generated_input_delay (in addition to existing
wenzelm@64527
   892
editor_input_delay for regular user edits). This may affect overall PIDE
wenzelm@64527
   893
reactivity and CPU usage.
wenzelm@64527
   894
wenzelm@64390
   895
* Syntactic indentation according to Isabelle outer syntax. Action
wenzelm@64390
   896
"indent-lines" (shortcut C+i) indents the current line according to
wenzelm@64390
   897
command keywords and some command substructure. Action
wenzelm@64390
   898
"isabelle.newline" (shortcut ENTER) indents the old and the new line
wenzelm@64390
   899
according to command keywords only; see also option
wenzelm@64390
   900
"jedit_indent_newline".
wenzelm@64390
   901
wenzelm@64390
   902
* Semantic indentation for unstructured proof scripts ('apply' etc.) via
wenzelm@64390
   903
number of subgoals. This requires information of ongoing document
wenzelm@64390
   904
processing and may thus lag behind, when the user is editing too
wenzelm@64390
   905
quickly; see also option "jedit_script_indent" and
wenzelm@64390
   906
"jedit_script_indent_limit".
wenzelm@64390
   907
wenzelm@64390
   908
* Refined folding mode "isabelle" based on Isar syntax: 'next' and 'qed'
wenzelm@64390
   909
are treated as delimiters for fold structure; 'begin' and 'end'
wenzelm@64390
   910
structure of theory specifications is treated as well.
wenzelm@64390
   911
wenzelm@64390
   912
* Command 'proof' provides information about proof outline with cases,
wenzelm@64390
   913
e.g. for proof methods "cases", "induct", "goal_cases".
wenzelm@64390
   914
wenzelm@64390
   915
* Completion templates for commands involving "begin ... end" blocks,
wenzelm@64390
   916
e.g. 'context', 'notepad'.
wenzelm@64390
   917
wenzelm@64390
   918
* Sidekick parser "isabelle-context" shows nesting of context blocks
wenzelm@64390
   919
according to 'begin' and 'end' structure.
wenzelm@64390
   920
wenzelm@63977
   921
* Highlighting of entity def/ref positions wrt. cursor.
wenzelm@63977
   922
wenzelm@63977
   923
* Action "isabelle.select-entity" (shortcut CS+ENTER) selects all
wenzelm@64514
   924
occurrences of the formal entity at the caret position. This facilitates
wenzelm@63977
   925
systematic renaming.
wenzelm@63977
   926
wenzelm@63977
   927
* PIDE document markup works across multiple Isar commands, e.g. the
wenzelm@63977
   928
results established at the end of a proof are properly identified in the
wenzelm@63977
   929
theorem statement.
wenzelm@63977
   930
wenzelm@63977
   931
* Cartouche abbreviations work both for " and ` to accomodate typical
wenzelm@63977
   932
situations where old ASCII notation may be updated.
wenzelm@63977
   933
wenzelm@63875
   934
* Dockable window "Symbols" also provides access to 'abbrevs' from the
wenzelm@63875
   935
outer syntax of the current theory buffer. This provides clickable
wenzelm@63875
   936
syntax templates, including entries with empty abbrevs name (which are
wenzelm@63875
   937
inaccessible via keyboard completion).
wenzelm@63875
   938
wenzelm@63022
   939
* IDE support for the Isabelle/Pure bootstrap process, with the
wenzelm@63022
   940
following independent stages:
wenzelm@63022
   941
wenzelm@63022
   942
  src/Pure/ROOT0.ML
wenzelm@63022
   943
  src/Pure/ROOT.ML
wenzelm@63022
   944
  src/Pure/Pure.thy
wenzelm@63022
   945
  src/Pure/ML_Bootstrap.thy
wenzelm@63022
   946
wenzelm@63022
   947
The ML ROOT files act like quasi-theories in the context of theory
wenzelm@63022
   948
ML_Bootstrap: this allows continuous checking of all loaded ML files.
wenzelm@63022
   949
The theory files are presented with a modified header to import Pure
wenzelm@63022
   950
from the running Isabelle instance. Results from changed versions of
wenzelm@63022
   951
each stage are *not* propagated to the next stage, and isolated from the
wenzelm@63022
   952
actual Isabelle/Pure that runs the IDE itself. The sequential
wenzelm@63307
   953
dependencies of the above files are only observed for batch build.
wenzelm@62904
   954
wenzelm@63977
   955
* Isabelle/ML and Standard ML files are presented in Sidekick with the
wenzelm@63977
   956
tree structure of section headings: this special comment format is
wenzelm@63977
   957
described in "implementation" chapter 0, e.g. (*** section ***).
wenzelm@63461
   958
wenzelm@63581
   959
* Additional abbreviations for syntactic completion may be specified
wenzelm@63871
   960
within the theory header as 'abbrevs'. The theory syntax for 'keywords'
wenzelm@63871
   961
has been simplified accordingly: optional abbrevs need to go into the
wenzelm@63871
   962
new 'abbrevs' section.
wenzelm@63871
   963
wenzelm@63871
   964
* Global abbreviations via $ISABELLE_HOME/etc/abbrevs and
wenzelm@63871
   965
$ISABELLE_HOME_USER/etc/abbrevs are no longer supported. Minor
wenzelm@63871
   966
INCOMPATIBILITY, use 'abbrevs' within theory header instead.
wenzelm@63579
   967
wenzelm@64390
   968
* Action "isabelle.keymap-merge" asks the user to resolve pending
wenzelm@64390
   969
Isabelle keymap changes that are in conflict with the current jEdit
wenzelm@64390
   970
keymap; non-conflicting changes are always applied implicitly. This
wenzelm@64390
   971
action is automatically invoked on Isabelle/jEdit startup and thus
wenzelm@64390
   972
increases chances that users see new keyboard shortcuts when re-using
wenzelm@64390
   973
old keymaps.
wenzelm@64390
   974
wenzelm@63675
   975
* ML and document antiquotations for file-systems paths are more uniform
wenzelm@63675
   976
and diverse:
wenzelm@63675
   977
wenzelm@63675
   978
  @{path NAME}   -- no file-system check
wenzelm@63675
   979
  @{file NAME}   -- check for plain file
wenzelm@63675
   980
  @{dir NAME}    -- check for directory
wenzelm@63675
   981
wenzelm@63675
   982
Minor INCOMPATIBILITY, former uses of @{file} and @{file_unchecked} may
wenzelm@63675
   983
have to be changed.
wenzelm@63669
   984
wenzelm@63669
   985
wenzelm@63977
   986
*** Document preparation ***
wenzelm@63977
   987
wenzelm@63977
   988
* New symbol \<circle>, e.g. for temporal operator.
wenzelm@63977
   989
wenzelm@64073
   990
* New document and ML antiquotation @{locale} for locales, similar to
wenzelm@64073
   991
existing antiquotation @{class}.
wenzelm@64073
   992
wenzelm@63977
   993
* Mixfix annotations support delimiters like \<^control>\<open>cartouche\<close> --
wenzelm@63977
   994
this allows special forms of document output.
wenzelm@63977
   995
wenzelm@63977
   996
* Raw LaTeX output now works via \<^latex>\<open>...\<close> instead of raw control
wenzelm@63977
   997
symbol \<^raw:...>. INCOMPATIBILITY, notably for LaTeXsugar.thy and its
wenzelm@63977
   998
derivatives.
wenzelm@63977
   999
wenzelm@63977
  1000
* \<^raw:...> symbols are no longer supported.
wenzelm@63977
  1001
wenzelm@63977
  1002
* Old 'header' command is no longer supported (legacy since
wenzelm@63977
  1003
Isabelle2015).
wenzelm@63977
  1004
wenzelm@63977
  1005
wenzelm@62312
  1006
*** Isar ***
wenzelm@62312
  1007
wenzelm@63180
  1008
* Many specification elements support structured statements with 'if' /
wenzelm@63180
  1009
'for' eigen-context, e.g. 'axiomatization', 'abbreviation',
wenzelm@63180
  1010
'definition', 'inductive', 'function'.
wenzelm@63180
  1011
wenzelm@63094
  1012
* Toplevel theorem statements support eigen-context notation with 'if' /
wenzelm@63284
  1013
'for' (in postfix), which corresponds to 'assumes' / 'fixes' in the
wenzelm@63094
  1014
traditional long statement form (in prefix). Local premises are called
wenzelm@63094
  1015
"that" or "assms", respectively. Empty premises are *not* bound in the
wenzelm@63094
  1016
context: INCOMPATIBILITY.
wenzelm@63094
  1017
wenzelm@63039
  1018
* Command 'define' introduces a local (non-polymorphic) definition, with
wenzelm@63039
  1019
optional abstraction over local parameters. The syntax resembles
wenzelm@63043
  1020
'definition' and 'obtain'. It fits better into the Isar language than
wenzelm@63043
  1021
old 'def', which is now a legacy feature.
wenzelm@63039
  1022
wenzelm@63059
  1023
* Command 'obtain' supports structured statements with 'if' / 'for'
wenzelm@63059
  1024
context.
wenzelm@63059
  1025
wenzelm@62312
  1026
* Command '\<proof>' is an alias for 'sorry', with different
wenzelm@62312
  1027
typesetting. E.g. to produce proof holes in examples and documentation.
wenzelm@62216
  1028
wenzelm@63977
  1029
* The defining position of a literal fact \<open>prop\<close> is maintained more
wenzelm@63977
  1030
carefully, and made accessible as hyperlink in the Prover IDE.
wenzelm@63977
  1031
wenzelm@63977
  1032
* Commands 'finally' and 'ultimately' used to expose the result as
wenzelm@63977
  1033
literal fact: this accidental behaviour has been discontinued. Rare
wenzelm@63977
  1034
INCOMPATIBILITY, use more explicit means to refer to facts in Isar.
wenzelm@63977
  1035
wenzelm@63977
  1036
* Command 'axiomatization' has become more restrictive to correspond
wenzelm@63977
  1037
better to internal axioms as singleton facts with mandatory name. Minor
wenzelm@63977
  1038
INCOMPATIBILITY.
wenzelm@62939
  1039
wenzelm@63259
  1040
* Proof methods may refer to the main facts via the dynamic fact
wenzelm@63259
  1041
"method_facts". This is particularly useful for Eisbach method
wenzelm@63259
  1042
definitions.
wenzelm@63259
  1043
wenzelm@63527
  1044
* Proof method "use" allows to modify the main facts of a given method
wenzelm@63527
  1045
expression, e.g.
wenzelm@63259
  1046
wenzelm@63259
  1047
  (use facts in simp)
wenzelm@63259
  1048
  (use facts in \<open>simp add: ...\<close>)
wenzelm@63259
  1049
wenzelm@63977
  1050
* The old proof method "default" has been removed (legacy since
wenzelm@63977
  1051
Isabelle2016). INCOMPATIBILITY, use "standard" instead.
wenzelm@63977
  1052
wenzelm@62216
  1053
haftmann@63165
  1054
*** Pure ***
haftmann@63165
  1055
wenzelm@63977
  1056
* Pure provides basic versions of proof methods "simp" and "simp_all"
wenzelm@63977
  1057
that only know about meta-equality (==). Potential INCOMPATIBILITY in
wenzelm@63977
  1058
theory imports that merge Pure with e.g. Main of Isabelle/HOL: the order
wenzelm@63977
  1059
is relevant to avoid confusion of Pure.simp vs. HOL.simp.
wenzelm@63977
  1060
wenzelm@63977
  1061
* The command 'unfolding' and proof method "unfold" include a second
wenzelm@63977
  1062
stage where given equations are passed through the attribute "abs_def"
wenzelm@63977
  1063
before rewriting. This ensures that definitions are fully expanded,
wenzelm@63977
  1064
regardless of the actual parameters that are provided. Rare
wenzelm@63977
  1065
INCOMPATIBILITY in some corner cases: use proof method (simp only:)
wenzelm@63977
  1066
instead, or declare [[unfold_abs_def = false]] in the proof context.
wenzelm@63977
  1067
wenzelm@63977
  1068
* Type-inference improves sorts of newly introduced type variables for
wenzelm@63977
  1069
the object-logic, using its base sort (i.e. HOL.type for Isabelle/HOL).
wenzelm@63977
  1070
Thus terms like "f x" or "\<And>x. P x" without any further syntactic context
wenzelm@63977
  1071
produce x::'a::type in HOL instead of x::'a::{} in Pure. Rare
wenzelm@63977
  1072
INCOMPATIBILITY, need to provide explicit type constraints for Pure
wenzelm@63977
  1073
types where this is really intended.
haftmann@63350
  1074
haftmann@63165
  1075
blanchet@62327
  1076
*** HOL ***
blanchet@62327
  1077
wenzelm@63977
  1078
* New proof method "argo" using the built-in Argo solver based on SMT
wenzelm@63977
  1079
technology. The method can be used to prove goals of quantifier-free
wenzelm@63977
  1080
propositional logic, goals based on a combination of quantifier-free
wenzelm@63977
  1081
propositional logic with equality, and goals based on a combination of
wenzelm@63977
  1082
quantifier-free propositional logic with linear real arithmetic
wenzelm@63977
  1083
including min/max/abs. See HOL/ex/Argo_Examples.thy for examples.
wenzelm@63977
  1084
blanchet@66614
  1085
* The new "nunchaku" command integrates the Nunchaku model finder. The
wenzelm@64390
  1086
tool is experimental. See ~~/src/HOL/Nunchaku/Nunchaku.thy for details.
wenzelm@64390
  1087
wenzelm@63977
  1088
* Metis: The problem encoding has changed very slightly. This might
blanchet@63785
  1089
break existing proofs. INCOMPATIBILITY.
blanchet@63785
  1090
blanchet@63116
  1091
* Sledgehammer:
lp15@63967
  1092
  - The MaSh relevance filter is now faster than before.
blanchet@63116
  1093
  - Produce syntactically correct Vampire 4.0 problem files.
blanchet@63116
  1094
blanchet@62327
  1095
* (Co)datatype package:
blanchet@62693
  1096
  - New commands for defining corecursive functions and reasoning about
blanchet@62693
  1097
    them in "~~/src/HOL/Library/BNF_Corec.thy": 'corec', 'corecursive',
blanchet@62693
  1098
    'friend_of_corec', and 'corecursion_upto'; and 'corec_unique' proof
blanchet@62842
  1099
    method. See 'isabelle doc corec'.
wenzelm@63977
  1100
  - The predicator :: ('a \<Rightarrow> bool) \<Rightarrow> 'a F \<Rightarrow> bool is now a first-class
blanchet@63855
  1101
    citizen in bounded natural functors.
blanchet@62693
  1102
  - 'primrec' now allows nested calls through the predicator in addition
blanchet@62327
  1103
    to the map function.
blanchet@63855
  1104
  - 'bnf' automatically discharges reflexive proof obligations.
blanchet@62693
  1105
  - 'bnf' outputs a slightly modified proof obligation expressing rel in
traytel@62332
  1106
       terms of map and set
blanchet@63855
  1107
       (not giving a specification for rel makes this one reflexive).
blanchet@62693
  1108
  - 'bnf' outputs a new proof obligation expressing pred in terms of set
blanchet@63855
  1109
       (not giving a specification for pred makes this one reflexive).
blanchet@63855
  1110
    INCOMPATIBILITY: manual 'bnf' declarations may need adjustment.
blanchet@62335
  1111
  - Renamed lemmas:
blanchet@62335
  1112
      rel_prod_apply ~> rel_prod_inject
blanchet@62335
  1113
      pred_prod_apply ~> pred_prod_inject
blanchet@62335
  1114
    INCOMPATIBILITY.
blanchet@62536
  1115
  - The "size" plugin has been made compatible again with locales.
blanchet@63855
  1116
  - The theorems about "rel" and "set" may have a slightly different (but
blanchet@63855
  1117
    equivalent) form.
blanchet@63855
  1118
    INCOMPATIBILITY.
blanchet@62327
  1119
wenzelm@63977
  1120
* The 'coinductive' command produces a proper coinduction rule for
wenzelm@63977
  1121
mutual coinductive predicates. This new rule replaces the old rule,
wenzelm@63977
  1122
which exposed details of the internal fixpoint construction and was
wenzelm@63977
  1123
hard to use. INCOMPATIBILITY.
wenzelm@63977
  1124
wenzelm@63977
  1125
* New abbreviations for negated existence (but not bounded existence):
wenzelm@63977
  1126
wenzelm@63977
  1127
  \<nexists>x. P x \<equiv> \<not> (\<exists>x. P x)
wenzelm@63977
  1128
  \<nexists>!x. P x \<equiv> \<not> (\<exists>!x. P x)
wenzelm@63977
  1129
wenzelm@63977
  1130
* The print mode "HOL" for ASCII syntax of binders "!", "?", "?!", "@"
wenzelm@63977
  1131
has been removed for output. It is retained for input only, until it is
wenzelm@63977
  1132
eliminated altogether.
wenzelm@63977
  1133
wenzelm@63977
  1134
* The unique existence quantifier no longer provides 'binder' syntax,
wenzelm@63977
  1135
but uses syntax translations (as for bounded unique existence). Thus
wenzelm@63977
  1136
iterated quantification \<exists>!x y. P x y with its slightly confusing
wenzelm@63977
  1137
sequential meaning \<exists>!x. \<exists>!y. P x y is no longer possible. Instead,
wenzelm@63977
  1138
pattern abstraction admits simultaneous unique existence \<exists>!(x, y). P x y
wenzelm@63977
  1139
(analogous to existing notation \<exists>!(x, y)\<in>A. P x y). Potential
wenzelm@63977
  1140
INCOMPATIBILITY in rare situations.
wenzelm@63977
  1141
wenzelm@63977
  1142
* Conventional syntax "%(). t" for unit abstractions. Slight syntactic
wenzelm@63977
  1143
INCOMPATIBILITY.
wenzelm@63977
  1144
wenzelm@64390
  1145
* Renamed constants and corresponding theorems:
wenzelm@64390
  1146
wenzelm@64390
  1147
    setsum ~> sum
wenzelm@64390
  1148
    setprod ~> prod
wenzelm@64390
  1149
    listsum ~> sum_list
wenzelm@64390
  1150
    listprod ~> prod_list
wenzelm@64390
  1151
wenzelm@64390
  1152
INCOMPATIBILITY.
wenzelm@64390
  1153
wenzelm@64390
  1154
* Sligthly more standardized theorem names:
wenzelm@64390
  1155
    sgn_times ~> sgn_mult
wenzelm@64390
  1156
    sgn_mult' ~> Real_Vector_Spaces.sgn_mult
wenzelm@64390
  1157
    divide_zero_left ~> div_0
wenzelm@64390
  1158
    zero_mod_left ~> mod_0
wenzelm@64390
  1159
    divide_zero ~> div_by_0
wenzelm@64390
  1160
    divide_1 ~> div_by_1
wenzelm@64390
  1161
    nonzero_mult_divide_cancel_left ~> nonzero_mult_div_cancel_left
wenzelm@64390
  1162
    div_mult_self1_is_id ~> nonzero_mult_div_cancel_left
wenzelm@64390
  1163
    nonzero_mult_divide_cancel_right ~> nonzero_mult_div_cancel_right
wenzelm@64390
  1164
    div_mult_self2_is_id ~> nonzero_mult_div_cancel_right
wenzelm@64390
  1165
    is_unit_divide_mult_cancel_left ~> is_unit_div_mult_cancel_left
wenzelm@64390
  1166
    is_unit_divide_mult_cancel_right ~> is_unit_div_mult_cancel_right
wenzelm@64390
  1167
    mod_div_equality ~> div_mult_mod_eq
wenzelm@64390
  1168
    mod_div_equality2 ~> mult_div_mod_eq
wenzelm@64390
  1169
    mod_div_equality3 ~> mod_div_mult_eq
wenzelm@64390
  1170
    mod_div_equality4 ~> mod_mult_div_eq
wenzelm@64390
  1171
    minus_div_eq_mod ~> minus_div_mult_eq_mod
wenzelm@64390
  1172
    minus_div_eq_mod2 ~> minus_mult_div_eq_mod
wenzelm@64390
  1173
    minus_mod_eq_div ~> minus_mod_eq_div_mult
wenzelm@64390
  1174
    minus_mod_eq_div2 ~> minus_mod_eq_mult_div
wenzelm@64390
  1175
    div_mod_equality' ~> minus_mod_eq_div_mult [symmetric]
wenzelm@64390
  1176
    mod_div_equality' ~> minus_div_mult_eq_mod [symmetric]
wenzelm@64390
  1177
    zmod_zdiv_equality ~> mult_div_mod_eq [symmetric]
wenzelm@64390
  1178
    zmod_zdiv_equality' ~> minus_div_mult_eq_mod [symmetric]
wenzelm@64390
  1179
    Divides.mult_div_cancel ~> minus_mod_eq_mult_div [symmetric]
wenzelm@64390
  1180
    mult_div_cancel ~> minus_mod_eq_mult_div [symmetric]
wenzelm@64390
  1181
    zmult_div_cancel ~> minus_mod_eq_mult_div [symmetric]
wenzelm@64390
  1182
    div_1 ~> div_by_Suc_0
wenzelm@64390
  1183
    mod_1 ~> mod_by_Suc_0
wenzelm@64390
  1184
INCOMPATIBILITY.
wenzelm@64390
  1185
wenzelm@64390
  1186
* New type class "idom_abs_sgn" specifies algebraic properties
wenzelm@64390
  1187
of sign and absolute value functions.  Type class "sgn_if" has
wenzelm@64390
  1188
disappeared.  Slight INCOMPATIBILITY.
wenzelm@64390
  1189
wenzelm@64390
  1190
* Dedicated syntax LENGTH('a) for length of types.
wenzelm@64390
  1191
wenzelm@63977
  1192
* Characters (type char) are modelled as finite algebraic type
wenzelm@63977
  1193
corresponding to {0..255}.
wenzelm@63977
  1194
wenzelm@63977
  1195
  - Logical representation:
wenzelm@63977
  1196
    * 0 is instantiated to the ASCII zero character.
wenzelm@63977
  1197
    * All other characters are represented as "Char n"
wenzelm@63977
  1198
      with n being a raw numeral expression less than 256.
wenzelm@63977
  1199
    * Expressions of the form "Char n" with n greater than 255
wenzelm@63977
  1200
      are non-canonical.
wenzelm@63977
  1201
  - Printing and parsing:
wenzelm@63977
  1202
    * Printable characters are printed and parsed as "CHR ''\<dots>''"
wenzelm@63977
  1203
      (as before).
wenzelm@63977
  1204
    * The ASCII zero character is printed and parsed as "0".
wenzelm@63977
  1205
    * All other canonical characters are printed as "CHR 0xXX"
wenzelm@63977
  1206
      with XX being the hexadecimal character code.  "CHR n"
wenzelm@63977
  1207
      is parsable for every numeral expression n.
wenzelm@63977
  1208
    * Non-canonical characters have no special syntax and are
wenzelm@63977
  1209
      printed as their logical representation.
wenzelm@63977
  1210
  - Explicit conversions from and to the natural numbers are
wenzelm@63977
  1211
    provided as char_of_nat, nat_of_char (as before).
wenzelm@63977
  1212
  - The auxiliary nibble type has been discontinued.
wenzelm@63977
  1213
wenzelm@63977
  1214
INCOMPATIBILITY.
wenzelm@63977
  1215
wenzelm@63977
  1216
* Type class "div" with operation "mod" renamed to type class "modulo"
wenzelm@63977
  1217
with operation "modulo", analogously to type class "divide". This
wenzelm@63977
  1218
eliminates the need to qualify any of those names in the presence of
wenzelm@63977
  1219
infix "mod" syntax. INCOMPATIBILITY.
wenzelm@63977
  1220
wenzelm@63979
  1221
* Statements and proofs of Knaster-Tarski fixpoint combinators lfp/gfp
wenzelm@63979
  1222
have been clarified. The fixpoint properties are lfp_fixpoint, its
wenzelm@63979
  1223
symmetric lfp_unfold (as before), and the duals for gfp. Auxiliary items
wenzelm@63979
  1224
for the proof (lfp_lemma2 etc.) are no longer exported, but can be
wenzelm@63979
  1225
easily recovered by composition with eq_refl. Minor INCOMPATIBILITY.
wenzelm@63979
  1226
wenzelm@63977
  1227
* Constant "surj" is a mere input abbreviation, to avoid hiding an
wenzelm@63977
  1228
equation in term output. Minor INCOMPATIBILITY.
wenzelm@63977
  1229
wenzelm@63977
  1230
* Command 'code_reflect' accepts empty constructor lists for datatypes,
wenzelm@63977
  1231
which renders those abstract effectively.
wenzelm@63977
  1232
wenzelm@63977
  1233
* Command 'export_code' checks given constants for abstraction
wenzelm@63977
  1234
violations: a small guarantee that given constants specify a safe
wenzelm@63977
  1235
interface for the generated code.
wenzelm@63977
  1236
wenzelm@63977
  1237
* Code generation for Scala: ambiguous implicts in class diagrams are
wenzelm@63977
  1238
spelt out explicitly.
wenzelm@63977
  1239
wenzelm@63977
  1240
* Static evaluators (Code_Evaluation.static_* in Isabelle/ML) rely on
wenzelm@63977
  1241
explicitly provided auxiliary definitions for required type class
wenzelm@64390
  1242
dictionaries rather than half-working magic. INCOMPATIBILITY, see the
wenzelm@64390
  1243
tutorial on code generation for details.
wenzelm@64390
  1244
wenzelm@64390
  1245
* Theory Set_Interval: substantial new theorems on indexed sums and
wenzelm@64390
  1246
products.
wenzelm@63977
  1247
wenzelm@63977
  1248
* Locale bijection establishes convenient default simp rules such as
wenzelm@63977
  1249
"inv f (f a) = a" for total bijections.
wenzelm@63977
  1250
wenzelm@63977
  1251
* Abstract locales semigroup, abel_semigroup, semilattice,
wenzelm@63977
  1252
semilattice_neutr, ordering, ordering_top, semilattice_order,
wenzelm@63977
  1253
semilattice_neutr_order, comm_monoid_set, semilattice_set,
wenzelm@63977
  1254
semilattice_neutr_set, semilattice_order_set,
wenzelm@63977
  1255
semilattice_order_neutr_set monoid_list, comm_monoid_list,
wenzelm@63977
  1256
comm_monoid_list_set, comm_monoid_mset, comm_monoid_fun use boldified
wenzelm@63977
  1257
syntax uniformly that does not clash with corresponding global syntax.
wenzelm@63977
  1258
INCOMPATIBILITY.
wenzelm@63977
  1259
wenzelm@63977
  1260
* Former locale lifting_syntax is now a bundle, which is easier to
wenzelm@63977
  1261
include in a local context or theorem statement, e.g. "context includes
wenzelm@63977
  1262
lifting_syntax begin ... end". Minor INCOMPATIBILITY.
wenzelm@63977
  1263
wenzelm@63807
  1264
* Some old / obsolete theorems have been renamed / removed, potential
wenzelm@63807
  1265
INCOMPATIBILITY.
wenzelm@63807
  1266
wenzelm@63807
  1267
  nat_less_cases  --  removed, use linorder_cases instead
wenzelm@63807
  1268
  inv_image_comp  --  removed, use image_inv_f_f instead
wenzelm@63807
  1269
  image_surj_f_inv_f  ~>  image_f_inv_f
wenzelm@63113
  1270
Mathias@63456
  1271
* Some theorems about groups and orders have been generalised from
Mathias@63456
  1272
  groups to semi-groups that are also monoids:
Mathias@63456
  1273
    le_add_same_cancel1
Mathias@63456
  1274
    le_add_same_cancel2
Mathias@63456
  1275
    less_add_same_cancel1
Mathias@63456
  1276
    less_add_same_cancel2
Mathias@63456
  1277
    add_le_same_cancel1
Mathias@63456
  1278
    add_le_same_cancel2
Mathias@63456
  1279
    add_less_same_cancel1
Mathias@63456
  1280
    add_less_same_cancel2
Mathias@63456
  1281
Mathias@63456
  1282
* Some simplifications theorems about rings have been removed, since
Mathias@63456
  1283
  superseeded by a more general version:
Mathias@63456
  1284
    less_add_cancel_left_greater_zero ~> less_add_same_cancel1
Mathias@63456
  1285
    less_add_cancel_right_greater_zero ~> less_add_same_cancel2
Mathias@63456
  1286
    less_eq_add_cancel_left_greater_eq_zero ~> le_add_same_cancel1
Mathias@63456
  1287
    less_eq_add_cancel_right_greater_eq_zero ~> le_add_same_cancel2
Mathias@63456
  1288
    less_eq_add_cancel_left_less_eq_zero ~> add_le_same_cancel1
Mathias@63456
  1289
    less_eq_add_cancel_right_less_eq_zero ~> add_le_same_cancel2
Mathias@63456
  1290
    less_add_cancel_left_less_zero ~> add_less_same_cancel1
Mathias@63456
  1291
    less_add_cancel_right_less_zero ~> add_less_same_cancel2
Mathias@63456
  1292
INCOMPATIBILITY.
Mathias@63456
  1293
wenzelm@62407
  1294
* Renamed split_if -> if_split and split_if_asm -> if_split_asm to
wenzelm@62407
  1295
resemble the f.split naming convention, INCOMPATIBILITY.
nipkow@62396
  1296
wenzelm@63977
  1297
* Added class topological_monoid.
wenzelm@63977
  1298
wenzelm@64391
  1299
* The following theorems have been renamed:
wenzelm@64391
  1300
nipkow@64457
  1301
  setsum_left_distrib ~> sum_distrib_right
nipkow@64457
  1302
  setsum_right_distrib ~> sum_distrib_left
wenzelm@64391
  1303
wenzelm@64391
  1304
INCOMPATIBILITY.
wenzelm@64391
  1305
wenzelm@64391
  1306
* Compound constants INFIMUM and SUPREMUM are mere abbreviations now.
wenzelm@64391
  1307
INCOMPATIBILITY.
wenzelm@64391
  1308
wenzelm@64391
  1309
* "Gcd (f ` A)" and "Lcm (f ` A)" are printed with optional
wenzelm@64391
  1310
comprehension-like syntax analogously to "Inf (f ` A)" and "Sup (f `
wenzelm@64391
  1311
A)".
wenzelm@64391
  1312
wenzelm@64391
  1313
* Class semiring_Lcd merged into semiring_Gcd. INCOMPATIBILITY.
wenzelm@64391
  1314
wenzelm@64391
  1315
* The type class ordered_comm_monoid_add is now called
wenzelm@64391
  1316
ordered_cancel_comm_monoid_add. A new type class ordered_comm_monoid_add
wenzelm@64391
  1317
is introduced as the combination of ordered_ab_semigroup_add +
wenzelm@64391
  1318
comm_monoid_add. INCOMPATIBILITY.
wenzelm@64391
  1319
wenzelm@64391
  1320
* Introduced the type classes canonically_ordered_comm_monoid_add and
wenzelm@64391
  1321
dioid.
wenzelm@64391
  1322
wenzelm@64391
  1323
* Introduced the type class ordered_ab_semigroup_monoid_add_imp_le. When
wenzelm@64391
  1324
instantiating linordered_semiring_strict and ordered_ab_group_add, an
wenzelm@64391
  1325
explicit instantiation of ordered_ab_semigroup_monoid_add_imp_le might
wenzelm@64391
  1326
be required. INCOMPATIBILITY.
nipkow@63117
  1327
haftmann@62348
  1328
* Dropped various legacy fact bindings, whose replacements are often
haftmann@62348
  1329
of a more general type also:
haftmann@62348
  1330
  lcm_left_commute_nat ~> lcm.left_commute
haftmann@62348
  1331
  lcm_left_commute_int ~> lcm.left_commute
haftmann@62348
  1332
  gcd_left_commute_nat ~> gcd.left_commute
haftmann@62348
  1333
  gcd_left_commute_int ~> gcd.left_commute
haftmann@62348
  1334
  gcd_greatest_iff_nat ~> gcd_greatest_iff
haftmann@62348
  1335
  gcd_greatest_iff_int ~> gcd_greatest_iff
haftmann@62348
  1336
  coprime_dvd_mult_nat ~> coprime_dvd_mult
haftmann@62348
  1337
  coprime_dvd_mult_int ~> coprime_dvd_mult
haftmann@62348
  1338
  zpower_numeral_even ~> power_numeral_even
haftmann@62348
  1339
  gcd_mult_cancel_nat ~> gcd_mult_cancel
haftmann@62348
  1340
  gcd_mult_cancel_int ~> gcd_mult_cancel
haftmann@62348
  1341
  div_gcd_coprime_nat ~> div_gcd_coprime
haftmann@62348
  1342
  div_gcd_coprime_int ~> div_gcd_coprime
haftmann@62348
  1343
  zpower_numeral_odd ~> power_numeral_odd
haftmann@62348
  1344
  zero_less_int_conv ~> of_nat_0_less_iff
haftmann@62348
  1345
  gcd_greatest_nat ~> gcd_greatest
haftmann@62348
  1346
  gcd_greatest_int ~> gcd_greatest
haftmann@62348
  1347
  coprime_mult_nat ~> coprime_mult
haftmann@62348
  1348
  coprime_mult_int ~> coprime_mult
haftmann@62348
  1349
  lcm_commute_nat ~> lcm.commute
haftmann@62348
  1350
  lcm_commute_int ~> lcm.commute
haftmann@62348
  1351
  int_less_0_conv ~> of_nat_less_0_iff
haftmann@62348
  1352
  gcd_commute_nat ~> gcd.commute
haftmann@62348
  1353
  gcd_commute_int ~> gcd.commute
haftmann@62348
  1354
  Gcd_insert_nat ~> Gcd_insert
haftmann@62348
  1355
  Gcd_insert_int ~> Gcd_insert
haftmann@62348
  1356
  of_int_int_eq ~> of_int_of_nat_eq
haftmann@62348
  1357
  lcm_least_nat ~> lcm_least
haftmann@62348
  1358
  lcm_least_int ~> lcm_least
haftmann@62348
  1359
  lcm_assoc_nat ~> lcm.assoc
haftmann@62348
  1360
  lcm_assoc_int ~> lcm.assoc
haftmann@62348
  1361
  int_le_0_conv ~> of_nat_le_0_iff
haftmann@62348
  1362
  int_eq_0_conv ~> of_nat_eq_0_iff
haftmann@62348
  1363
  Gcd_empty_nat ~> Gcd_empty
haftmann@62348
  1364
  Gcd_empty_int ~> Gcd_empty
haftmann@62348
  1365
  gcd_assoc_nat ~> gcd.assoc
haftmann@62348
  1366
  gcd_assoc_int ~> gcd.assoc
haftmann@62348
  1367
  zero_zle_int ~> of_nat_0_le_iff
haftmann@62348
  1368
  lcm_dvd2_nat ~> dvd_lcm2
haftmann@62348
  1369
  lcm_dvd2_int ~> dvd_lcm2
haftmann@62348
  1370
  lcm_dvd1_nat ~> dvd_lcm1
haftmann@62348
  1371
  lcm_dvd1_int ~> dvd_lcm1
haftmann@62348
  1372
  gcd_zero_nat ~> gcd_eq_0_iff
haftmann@62348
  1373
  gcd_zero_int ~> gcd_eq_0_iff
haftmann@62348
  1374
  gcd_dvd2_nat ~> gcd_dvd2
haftmann@62348
  1375
  gcd_dvd2_int ~> gcd_dvd2
haftmann@62348
  1376
  gcd_dvd1_nat ~> gcd_dvd1
haftmann@62348
  1377
  gcd_dvd1_int ~> gcd_dvd1
haftmann@62348
  1378
  int_numeral ~> of_nat_numeral
haftmann@62348
  1379
  lcm_ac_nat ~> ac_simps
haftmann@62348
  1380
  lcm_ac_int ~> ac_simps
haftmann@62348
  1381
  gcd_ac_nat ~> ac_simps
haftmann@62348
  1382
  gcd_ac_int ~> ac_simps
haftmann@62348
  1383
  abs_int_eq ~> abs_of_nat
haftmann@62348
  1384
  zless_int ~> of_nat_less_iff
haftmann@62348
  1385
  zdiff_int ~> of_nat_diff
haftmann@62348
  1386
  zadd_int ~> of_nat_add
haftmann@62348
  1387
  int_mult ~> of_nat_mult
haftmann@62348
  1388
  int_Suc ~> of_nat_Suc
haftmann@62348
  1389
  inj_int ~> inj_of_nat
haftmann@62348
  1390
  int_1 ~> of_nat_1
haftmann@62348
  1391
  int_0 ~> of_nat_0
haftmann@62353
  1392
  Lcm_empty_nat ~> Lcm_empty
haftmann@62353
  1393
  Lcm_empty_int ~> Lcm_empty
haftmann@62353
  1394
  Lcm_insert_nat ~> Lcm_insert
haftmann@62353
  1395
  Lcm_insert_int ~> Lcm_insert
haftmann@62353
  1396
  comp_fun_idem_gcd_nat ~> comp_fun_idem_gcd
haftmann@62353
  1397
  comp_fun_idem_gcd_int ~> comp_fun_idem_gcd
haftmann@62353
  1398
  comp_fun_idem_lcm_nat ~> comp_fun_idem_lcm
haftmann@62353
  1399
  comp_fun_idem_lcm_int ~> comp_fun_idem_lcm
haftmann@62353
  1400
  Lcm_eq_0 ~> Lcm_eq_0_I
haftmann@62353
  1401
  Lcm0_iff ~> Lcm_0_iff
haftmann@62353
  1402
  Lcm_dvd_int ~> Lcm_least
haftmann@62353
  1403
  divides_mult_nat ~> divides_mult
haftmann@62353
  1404
  divides_mult_int ~> divides_mult
haftmann@62353
  1405
  lcm_0_nat ~> lcm_0_right
haftmann@62353
  1406
  lcm_0_int ~> lcm_0_right
haftmann@62353
  1407
  lcm_0_left_nat ~> lcm_0_left
haftmann@62353
  1408
  lcm_0_left_int ~> lcm_0_left
haftmann@62353
  1409
  dvd_gcd_D1_nat ~> dvd_gcdD1
haftmann@62353
  1410
  dvd_gcd_D1_int ~> dvd_gcdD1
haftmann@62353
  1411
  dvd_gcd_D2_nat ~> dvd_gcdD2
haftmann@62353
  1412
  dvd_gcd_D2_int ~> dvd_gcdD2
haftmann@62353
  1413
  coprime_dvd_mult_iff_nat ~> coprime_dvd_mult_iff
haftmann@62353
  1414
  coprime_dvd_mult_iff_int ~> coprime_dvd_mult_iff
haftmann@62348
  1415
  realpow_minus_mult ~> power_minus_mult
haftmann@62348
  1416
  realpow_Suc_le_self ~> power_Suc_le_self
haftmann@62353
  1417
  dvd_Gcd, dvd_Gcd_nat, dvd_Gcd_int removed in favour of Gcd_greatest
haftmann@62347
  1418
INCOMPATIBILITY.
haftmann@62347
  1419
lp15@63967
  1420
* Renamed HOL/Quotient_Examples/FSet.thy to
wenzelm@63977
  1421
HOL/Quotient_Examples/Quotient_FSet.thy INCOMPATIBILITY.
wenzelm@63977
  1422
wenzelm@64390
  1423
* Session HOL-Library: theory FinFun bundles "finfun_syntax" and
wenzelm@64390
  1424
"no_finfun_syntax" allow to control optional syntax in local contexts;
wenzelm@64390
  1425
this supersedes former theory FinFun_Syntax. INCOMPATIBILITY, e.g. use
wenzelm@64390
  1426
"unbundle finfun_syntax" to imitate import of
wenzelm@64390
  1427
"~~/src/HOL/Library/FinFun_Syntax".
wenzelm@64390
  1428
wenzelm@64390
  1429
* Session HOL-Library: theory Multiset_Permutations (executably) defines
wenzelm@64390
  1430
the set of permutations of a given set or multiset, i.e. the set of all
wenzelm@64390
  1431
lists that contain every element of the carrier (multi-)set exactly
wenzelm@64390
  1432
once.
wenzelm@64390
  1433
wenzelm@64390
  1434
* Session HOL-Library: multiset membership is now expressed using
wenzelm@64390
  1435
set_mset rather than count.
wenzelm@64390
  1436
wenzelm@64390
  1437
  - Expressions "count M a > 0" and similar simplify to membership
wenzelm@64390
  1438
    by default.
wenzelm@64390
  1439
wenzelm@64390
  1440
  - Converting between "count M a = 0" and non-membership happens using
wenzelm@64390
  1441
    equations count_eq_zero_iff and not_in_iff.
wenzelm@64390
  1442
wenzelm@64390
  1443
  - Rules count_inI and in_countE obtain facts of the form
wenzelm@64390
  1444
    "count M a = n" from membership.
wenzelm@64390
  1445
wenzelm@64390
  1446
  - Rules count_in_diffI and in_diff_countE obtain facts of the form
wenzelm@64390
  1447
    "count M a = n + count N a" from membership on difference sets.
wenzelm@64390
  1448
wenzelm@64390
  1449
INCOMPATIBILITY.
wenzelm@64390
  1450
wenzelm@64390
  1451
* Session HOL-Library: theory LaTeXsugar uses new-style "dummy_pats" for
wenzelm@64390
  1452
displaying equations in functional programming style --- variables
wenzelm@64390
  1453
present on the left-hand but not on the righ-hand side are replaced by
wenzelm@64390
  1454
underscores.
wenzelm@64390
  1455
wenzelm@64390
  1456
* Session HOL-Library: theory Combinator_PER provides combinator to
wenzelm@64390
  1457
build partial equivalence relations from a predicate and an equivalence
wenzelm@64390
  1458
relation.
wenzelm@64390
  1459
wenzelm@64390
  1460
* Session HOL-Library: theory Perm provides basic facts about almost
wenzelm@64390
  1461
everywhere fix bijections.
wenzelm@64390
  1462
wenzelm@64390
  1463
* Session HOL-Library: theory Normalized_Fraction allows viewing an
wenzelm@64390
  1464
element of a field of fractions as a normalized fraction (i.e. a pair of
wenzelm@64390
  1465
numerator and denominator such that the two are coprime and the
wenzelm@64390
  1466
denominator is normalized wrt. unit factors).
wenzelm@64390
  1467
wenzelm@64390
  1468
* Session HOL-NSA has been renamed to HOL-Nonstandard_Analysis.
wenzelm@64390
  1469
wenzelm@64390
  1470
* Session HOL-Multivariate_Analysis has been renamed to HOL-Analysis.
wenzelm@64390
  1471
wenzelm@64390
  1472
* Session HOL-Analysis: measure theory has been moved here from
wenzelm@64390
  1473
HOL-Probability. When importing HOL-Analysis some theorems need
wenzelm@64390
  1474
additional name spaces prefixes due to name clashes. INCOMPATIBILITY.
wenzelm@64390
  1475
wenzelm@64390
  1476
* Session HOL-Analysis: more complex analysis including Cauchy's
wenzelm@64390
  1477
inequality, Liouville theorem, open mapping theorem, maximum modulus
wenzelm@64390
  1478
principle, Residue theorem, Schwarz Lemma.
wenzelm@64390
  1479
wenzelm@64390
  1480
* Session HOL-Analysis: Theory of polyhedra: faces, extreme points,
wenzelm@64390
  1481
polytopes, and the Krein–Milman Minkowski theorem.
wenzelm@64390
  1482
wenzelm@64390
  1483
* Session HOL-Analysis: Numerous results ported from the HOL Light
wenzelm@64390
  1484
libraries: homeomorphisms, continuous function extensions, invariance of
wenzelm@64390
  1485
domain.
wenzelm@64390
  1486
wenzelm@64390
  1487
* Session HOL-Probability: the type of emeasure and nn_integral was
wenzelm@64390
  1488
changed from ereal to ennreal, INCOMPATIBILITY.
wenzelm@64390
  1489
wenzelm@64390
  1490
  emeasure :: 'a measure \<Rightarrow> 'a set \<Rightarrow> ennreal
wenzelm@64390
  1491
  nn_integral :: 'a measure \<Rightarrow> ('a \<Rightarrow> ennreal) \<Rightarrow> ennreal
wenzelm@64390
  1492
wenzelm@64390
  1493
* Session HOL-Probability: Code generation and QuickCheck for
wenzelm@64390
  1494
Probability Mass Functions.
wenzelm@64390
  1495
wenzelm@64390
  1496
* Session HOL-Probability: theory Random_Permutations contains some
wenzelm@64390
  1497
theory about choosing a permutation of a set uniformly at random and
wenzelm@64390
  1498
folding over a list in random order.
wenzelm@64390
  1499
wenzelm@64390
  1500
* Session HOL-Probability: theory SPMF formalises discrete
wenzelm@64390
  1501
subprobability distributions.
wenzelm@64390
  1502
wenzelm@64390
  1503
* Session HOL-Library: the names of multiset theorems have been
wenzelm@64390
  1504
normalised to distinguish which ordering the theorems are about
wenzelm@64390
  1505
wenzelm@64390
  1506
    mset_less_eqI ~> mset_subset_eqI
wenzelm@64390
  1507
    mset_less_insertD ~> mset_subset_insertD
wenzelm@64390
  1508
    mset_less_eq_count ~> mset_subset_eq_count
wenzelm@64390
  1509
    mset_less_diff_self ~> mset_subset_diff_self
wenzelm@64390
  1510
    mset_le_exists_conv ~> mset_subset_eq_exists_conv
wenzelm@64390
  1511
    mset_le_mono_add_right_cancel ~> mset_subset_eq_mono_add_right_cancel
wenzelm@64390
  1512
    mset_le_mono_add_left_cancel ~> mset_subset_eq_mono_add_left_cancel
wenzelm@64390
  1513
    mset_le_mono_add ~> mset_subset_eq_mono_add
wenzelm@64390
  1514
    mset_le_add_left ~> mset_subset_eq_add_left
wenzelm@64390
  1515
    mset_le_add_right ~> mset_subset_eq_add_right
wenzelm@64390
  1516
    mset_le_single ~> mset_subset_eq_single
wenzelm@64390
  1517
    mset_le_multiset_union_diff_commute ~> mset_subset_eq_multiset_union_diff_commute
wenzelm@64390
  1518
    diff_le_self ~> diff_subset_eq_self
wenzelm@64390
  1519
    mset_leD ~> mset_subset_eqD
wenzelm@64390
  1520
    mset_lessD ~> mset_subsetD
wenzelm@64390
  1521
    mset_le_insertD ~> mset_subset_eq_insertD
wenzelm@64390
  1522
    mset_less_of_empty ~> mset_subset_of_empty
wenzelm@64390
  1523
    mset_less_size ~> mset_subset_size
wenzelm@64390
  1524
    wf_less_mset_rel ~> wf_subset_mset_rel
wenzelm@64390
  1525
    count_le_replicate_mset_le ~> count_le_replicate_mset_subset_eq
wenzelm@64390
  1526
    mset_remdups_le ~> mset_remdups_subset_eq
wenzelm@64390
  1527
    ms_lesseq_impl ~> subset_eq_mset_impl
wenzelm@64390
  1528
wenzelm@64390
  1529
Some functions have been renamed:
wenzelm@64390
  1530
    ms_lesseq_impl -> subset_eq_mset_impl
wenzelm@64390
  1531
wenzelm@64390
  1532
* HOL-Library: multisets are now ordered with the multiset ordering
wenzelm@64390
  1533
    #\<subseteq># ~> \<le>
wenzelm@64390
  1534
    #\<subset># ~> <
wenzelm@64390
  1535
    le_multiset ~> less_eq_multiset
wenzelm@64390
  1536
    less_multiset ~> le_multiset
wenzelm@64390
  1537
INCOMPATIBILITY.
wenzelm@64390
  1538
wenzelm@64390
  1539
* Session HOL-Library: the prefix multiset_order has been discontinued:
wenzelm@64390
  1540
the theorems can be directly accessed. As a consequence, the lemmas
wenzelm@64390
  1541
"order_multiset" and "linorder_multiset" have been discontinued, and the
wenzelm@64390
  1542
interpretations "multiset_linorder" and "multiset_wellorder" have been
wenzelm@64390
  1543
replaced by instantiations. INCOMPATIBILITY.
wenzelm@64390
  1544
wenzelm@64390
  1545
* Session HOL-Library: some theorems about the multiset ordering have
wenzelm@64390
  1546
been renamed:
wenzelm@64390
  1547
wenzelm@64390
  1548
    le_multiset_def ~> less_eq_multiset_def
wenzelm@64390
  1549
    less_multiset_def ~> le_multiset_def
wenzelm@64390
  1550
    less_eq_imp_le_multiset ~> subset_eq_imp_le_multiset
wenzelm@64390
  1551
    mult_less_not_refl ~> mset_le_not_refl
wenzelm@64390
  1552
    mult_less_trans ~> mset_le_trans
wenzelm@64390
  1553
    mult_less_not_sym ~> mset_le_not_sym
wenzelm@64390
  1554
    mult_less_asym ~> mset_le_asym
wenzelm@64390
  1555
    mult_less_irrefl ~> mset_le_irrefl
wenzelm@64390
  1556
    union_less_mono2{,1,2} ~> union_le_mono2{,1,2}
wenzelm@64390
  1557
wenzelm@64390
  1558
    le_multiset\<^sub>H\<^sub>O ~> less_eq_multiset\<^sub>H\<^sub>O
wenzelm@64390
  1559
    le_multiset_total ~> less_eq_multiset_total
wenzelm@64390
  1560
    less_multiset_right_total ~> subset_eq_imp_le_multiset
wenzelm@64390
  1561
    le_multiset_empty_left ~> less_eq_multiset_empty_left
wenzelm@64390
  1562
    le_multiset_empty_right ~> less_eq_multiset_empty_right
wenzelm@64390
  1563
    less_multiset_empty_right ~> le_multiset_empty_left
wenzelm@64390
  1564
    less_multiset_empty_left ~> le_multiset_empty_right
wenzelm@64390
  1565
    union_less_diff_plus ~> union_le_diff_plus
wenzelm@64390
  1566
    ex_gt_count_imp_less_multiset ~> ex_gt_count_imp_le_multiset
wenzelm@64390
  1567
    less_multiset_plus_left_nonempty ~> le_multiset_plus_left_nonempty
wenzelm@64390
  1568
    le_multiset_plus_right_nonempty ~> le_multiset_plus_right_nonempty
wenzelm@64390
  1569
INCOMPATIBILITY.
wenzelm@64390
  1570
wenzelm@64390
  1571
* Session HOL-Library: the lemma mset_map has now the attribute [simp].
wenzelm@64390
  1572
INCOMPATIBILITY.
wenzelm@64390
  1573
wenzelm@64390
  1574
* Session HOL-Library: some theorems about multisets have been removed.
wenzelm@64390
  1575
INCOMPATIBILITY, use the following replacements:
wenzelm@64390
  1576
wenzelm@64390
  1577
    le_multiset_plus_plus_left_iff ~> add_less_cancel_right
wenzelm@64390
  1578
    less_multiset_plus_plus_left_iff ~> add_less_cancel_right
wenzelm@64390
  1579
    le_multiset_plus_plus_right_iff ~> add_less_cancel_left
wenzelm@64390
  1580
    less_multiset_plus_plus_right_iff ~> add_less_cancel_left
wenzelm@64390
  1581
    add_eq_self_empty_iff ~> add_cancel_left_right
wenzelm@64390
  1582
    mset_subset_add_bothsides ~> subset_mset.add_less_cancel_right
wenzelm@64390
  1583
    mset_less_add_bothsides ~> subset_mset.add_less_cancel_right
wenzelm@64390
  1584
    mset_le_add_bothsides ~> subset_mset.add_less_cancel_right
wenzelm@64390
  1585
    empty_inter ~> subset_mset.inf_bot_left
wenzelm@64390
  1586
    inter_empty ~> subset_mset.inf_bot_right
wenzelm@64390
  1587
    empty_sup ~> subset_mset.sup_bot_left
wenzelm@64390
  1588
    sup_empty ~> subset_mset.sup_bot_right
wenzelm@64390
  1589
    bdd_below_multiset ~> subset_mset.bdd_above_bot
wenzelm@64390
  1590
    subset_eq_empty ~> subset_mset.le_zero_eq
wenzelm@64390
  1591
    le_empty ~> subset_mset.le_zero_eq
wenzelm@64390
  1592
    mset_subset_empty_nonempty ~> subset_mset.zero_less_iff_neq_zero
wenzelm@64390
  1593
    mset_less_empty_nonempty ~> subset_mset.zero_less_iff_neq_zero
wenzelm@64390
  1594
wenzelm@64390
  1595
* Session HOL-Library: some typeclass constraints about multisets have
wenzelm@64390
  1596
been reduced from ordered or linordered to preorder. Multisets have the
wenzelm@64390
  1597
additional typeclasses order_bot, no_top,
wenzelm@64390
  1598
ordered_ab_semigroup_add_imp_le, ordered_cancel_comm_monoid_add,
wenzelm@64390
  1599
linordered_cancel_ab_semigroup_add, and
wenzelm@64390
  1600
ordered_ab_semigroup_monoid_add_imp_le. INCOMPATIBILITY.
wenzelm@64390
  1601
wenzelm@64390
  1602
* Session HOL-Library: there are some new simplification rules about
wenzelm@64390
  1603
multisets, the multiset ordering, and the subset ordering on multisets.
wenzelm@64390
  1604
INCOMPATIBILITY.
wenzelm@64390
  1605
wenzelm@64390
  1606
* Session HOL-Library: the subset ordering on multisets has now the
wenzelm@64390
  1607
interpretations ordered_ab_semigroup_monoid_add_imp_le and
wenzelm@64390
  1608
bounded_lattice_bot. INCOMPATIBILITY.
wenzelm@64390
  1609
wenzelm@64390
  1610
* Session HOL-Library, theory Multiset: single has been removed in favor
wenzelm@64390
  1611
of add_mset that roughly corresponds to Set.insert. Some theorems have
wenzelm@64390
  1612
removed or changed:
wenzelm@64390
  1613
wenzelm@64390
  1614
  single_not_empty ~> add_mset_not_empty or empty_not_add_mset
wenzelm@64390
  1615
  fold_mset_insert ~> fold_mset_add_mset
wenzelm@64390
  1616
  image_mset_insert ~> image_mset_add_mset
wenzelm@64390
  1617
  union_single_eq_diff
wenzelm@64390
  1618
  multi_self_add_other_not_self
wenzelm@64390
  1619
  diff_single_eq_union
wenzelm@64390
  1620
INCOMPATIBILITY.
wenzelm@64390
  1621
wenzelm@64390
  1622
* Session HOL-Library, theory Multiset: some theorems have been changed
wenzelm@64390
  1623
to use add_mset instead of single:
wenzelm@64390
  1624
wenzelm@64390
  1625
  mset_add
wenzelm@64390
  1626
  multi_self_add_other_not_self
wenzelm@64390
  1627
  diff_single_eq_union
wenzelm@64390
  1628
  union_single_eq_diff
wenzelm@64390
  1629
  union_single_eq_member
wenzelm@64390
  1630
  add_eq_conv_diff
wenzelm@64390
  1631
  insert_noteq_member
wenzelm@64390
  1632
  add_eq_conv_ex
wenzelm@64390
  1633
  multi_member_split
wenzelm@64390
  1634
  multiset_add_sub_el_shuffle
wenzelm@64390
  1635
  mset_subset_eq_insertD
wenzelm@64390
  1636
  mset_subset_insertD
wenzelm@64390
  1637
  insert_subset_eq_iff
wenzelm@64390
  1638
  insert_union_subset_iff
wenzelm@64390
  1639
  multi_psub_of_add_self
wenzelm@64390
  1640
  inter_add_left1
wenzelm@64390
  1641
  inter_add_left2
wenzelm@64390
  1642
  inter_add_right1
wenzelm@64390
  1643
  inter_add_right2
wenzelm@64390
  1644
  sup_union_left1
wenzelm@64390
  1645
  sup_union_left2
wenzelm@64390
  1646
  sup_union_right1
wenzelm@64390
  1647
  sup_union_right2
wenzelm@64390
  1648
  size_eq_Suc_imp_eq_union
wenzelm@64390
  1649
  multi_nonempty_split
wenzelm@64390
  1650
  mset_insort
wenzelm@64390
  1651
  mset_update
wenzelm@64390
  1652
  mult1I
wenzelm@64390
  1653
  less_add
wenzelm@64390
  1654
  mset_zip_take_Cons_drop_twice
wenzelm@64390
  1655
  rel_mset_Zero
wenzelm@64390
  1656
  msed_map_invL
wenzelm@64390
  1657
  msed_map_invR
wenzelm@64390
  1658
  msed_rel_invL
wenzelm@64390
  1659
  msed_rel_invR
wenzelm@64390
  1660
  le_multiset_right_total
wenzelm@64390
  1661
  multiset_induct
wenzelm@64390
  1662
  multiset_induct2_size
wenzelm@64390
  1663
  multiset_induct2
wenzelm@64390
  1664
INCOMPATIBILITY.
wenzelm@64390
  1665
wenzelm@64390
  1666
* Session HOL-Library, theory Multiset: the definitions of some
wenzelm@64390
  1667
constants have changed to use add_mset instead of adding a single
wenzelm@64390
  1668
element:
wenzelm@64390
  1669
wenzelm@64390
  1670
  image_mset
wenzelm@64390
  1671
  mset
wenzelm@64390
  1672
  replicate_mset
wenzelm@64390
  1673
  mult1
wenzelm@64390
  1674
  pred_mset
wenzelm@64390
  1675
  rel_mset'
wenzelm@64390
  1676
  mset_insort
wenzelm@64390
  1677
wenzelm@64390
  1678
INCOMPATIBILITY.
wenzelm@64390
  1679
wenzelm@64390
  1680
* Session HOL-Library, theory Multiset: due to the above changes, the
wenzelm@64390
  1681
attributes of some multiset theorems have been changed:
wenzelm@64390
  1682
wenzelm@64390
  1683
  insert_DiffM  [] ~> [simp]
wenzelm@64390
  1684
  insert_DiffM2 [simp] ~> []
wenzelm@64390
  1685
  diff_add_mset_swap [simp]
wenzelm@64390
  1686
  fold_mset_add_mset [simp]
wenzelm@64390
  1687
  diff_diff_add [simp] (for multisets only)
wenzelm@64390
  1688
  diff_cancel [simp] ~> []
wenzelm@64390
  1689
  count_single [simp] ~> []
wenzelm@64390
  1690
  set_mset_single [simp] ~> []
wenzelm@64390
  1691
  size_multiset_single [simp] ~> []
wenzelm@64390
  1692
  size_single [simp] ~> []
wenzelm@64390
  1693
  image_mset_single [simp] ~> []
wenzelm@64390
  1694
  mset_subset_eq_mono_add_right_cancel [simp] ~> []
wenzelm@64390
  1695
  mset_subset_eq_mono_add_left_cancel [simp] ~> []
wenzelm@64390
  1696
  fold_mset_single [simp] ~> []
wenzelm@64390
  1697
  subset_eq_empty [simp] ~> []
wenzelm@64390
  1698
  empty_sup [simp] ~> []
wenzelm@64390
  1699
  sup_empty [simp] ~> []
wenzelm@64390
  1700
  inter_empty [simp] ~> []
wenzelm@64390
  1701
  empty_inter [simp] ~> []
wenzelm@64390
  1702
INCOMPATIBILITY.
wenzelm@64390
  1703
wenzelm@64391
  1704
* Session HOL-Library, theory Multiset: the order of the variables in
wenzelm@64390
  1705
the second cases of multiset_induct, multiset_induct2_size,
wenzelm@64390
  1706
multiset_induct2 has been changed (e.g. Add A a ~> Add a A).
wenzelm@64390
  1707
INCOMPATIBILITY.
wenzelm@64390
  1708
wenzelm@64390
  1709
* Session HOL-Library, theory Multiset: there is now a simplification
wenzelm@64390
  1710
procedure on multisets. It mimics the behavior of the procedure on
wenzelm@64390
  1711
natural numbers. INCOMPATIBILITY.
wenzelm@64390
  1712
wenzelm@64390
  1713
* Session HOL-Library, theory Multiset: renamed sums and products of
wenzelm@64390
  1714
multisets:
wenzelm@64390
  1715
wenzelm@64390
  1716
  msetsum ~> sum_mset
wenzelm@64390
  1717
  msetprod ~> prod_mset
wenzelm@64390
  1718
wenzelm@64390
  1719
* Session HOL-Library, theory Multiset: the notation for intersection
wenzelm@64390
  1720
and union of multisets have been changed:
wenzelm@64390
  1721
wenzelm@64390
  1722
  #\<inter> ~> \<inter>#
wenzelm@64390
  1723
  #\<union> ~> \<union>#
wenzelm@64390
  1724
wenzelm@64390
  1725
INCOMPATIBILITY.
wenzelm@64390
  1726
wenzelm@64390
  1727
* Session HOL-Library, theory Multiset: the lemma
wenzelm@64390
  1728
one_step_implies_mult_aux on multisets has been removed, use
wenzelm@64390
  1729
one_step_implies_mult instead. INCOMPATIBILITY.
wenzelm@64390
  1730
wenzelm@64390
  1731
* Session HOL-Library: theory Complete_Partial_Order2 provides reasoning
wenzelm@64390
  1732
support for monotonicity and continuity in chain-complete partial orders
wenzelm@64390
  1733
and about admissibility conditions for fixpoint inductions.
wenzelm@64390
  1734
haftmann@64523
  1735
* Session HOL-Library: theory Library/Polynomial contains also
haftmann@64523
  1736
derivation of polynomials (formerly in Library/Poly_Deriv) but not
haftmann@64523
  1737
gcd/lcm on polynomials over fields. This has been moved to a separate
haftmann@64523
  1738
theory Library/Polynomial_GCD_euclidean.thy, to pave way for a possible
haftmann@64523
  1739
future different type class instantiation for polynomials over factorial
haftmann@64523
  1740
rings. INCOMPATIBILITY.
wenzelm@64390
  1741
wenzelm@64390
  1742
* Session HOL-Library: theory Sublist provides function "prefixes" with
wenzelm@64390
  1743
the following renaming
wenzelm@64390
  1744
wenzelm@64390
  1745
  prefixeq -> prefix
wenzelm@64390
  1746
  prefix -> strict_prefix
wenzelm@64390
  1747
  suffixeq -> suffix
wenzelm@64390
  1748
  suffix -> strict_suffix
wenzelm@64390
  1749
wenzelm@64390
  1750
Added theory of longest common prefixes.
blanchet@64389
  1751
wenzelm@64391
  1752
* Session HOL-Number_Theory: algebraic foundation for primes:
wenzelm@64391
  1753
Generalisation of predicate "prime" and introduction of predicates
wenzelm@64391
  1754
"prime_elem", "irreducible", a "prime_factorization" function, and the
wenzelm@64391
  1755
"factorial_ring" typeclass with instance proofs for nat, int, poly. Some
wenzelm@64391
  1756
theorems now have different names, most notably "prime_def" is now
wenzelm@64391
  1757
"prime_nat_iff". INCOMPATIBILITY.
wenzelm@64391
  1758
wenzelm@64391
  1759
* Session Old_Number_Theory has been removed, after porting remaining
wenzelm@64391
  1760
theories.
wenzelm@64391
  1761
wenzelm@64551
  1762
* Session HOL-Types_To_Sets provides an experimental extension of
wenzelm@64551
  1763
Higher-Order Logic to allow translation of types to sets.
wenzelm@64551
  1764
wenzelm@63198
  1765
wenzelm@62498
  1766
*** ML ***
wenzelm@62498
  1767
wenzelm@63227
  1768
* Integer.gcd and Integer.lcm use efficient operations from the Poly/ML
wenzelm@63228
  1769
library (notably for big integers). Subtle change of semantics:
wenzelm@63228
  1770
Integer.gcd and Integer.lcm both normalize the sign, results are never
wenzelm@63228
  1771
negative. This coincides with the definitions in HOL/GCD.thy.
wenzelm@63228
  1772
INCOMPATIBILITY.
wenzelm@63227
  1773
wenzelm@63212
  1774
* Structure Rat for rational numbers is now an integral part of
wenzelm@63215
  1775
Isabelle/ML, with special notation @int/nat or @int for numerals (an
wenzelm@63215
  1776
abbreviation for antiquotation @{Pure.rat argument}) and ML pretty
wenzelm@63212
  1777
printing. Standard operations on type Rat.rat are provided via ad-hoc
wenzelm@63215
  1778
overloading of + - * / < <= > >= ~ abs. INCOMPATIBILITY, need to
wenzelm@63212
  1779
use + instead of +/ etc. Moreover, exception Rat.DIVZERO has been
wenzelm@63212
  1780
superseded by General.Div.
wenzelm@63198
  1781
wenzelm@64390
  1782
* ML antiquotation @{path} is superseded by @{file}, which ensures that
wenzelm@64390
  1783
the argument is a plain file. Minor INCOMPATIBILITY.
wenzelm@64390
  1784
wenzelm@64390
  1785
* Antiquotation @{make_string} is available during Pure bootstrap --
wenzelm@64390
  1786
with approximative output quality.
wenzelm@64390
  1787
wenzelm@64390
  1788
* Low-level ML system structures (like PolyML and RunCall) are no longer
wenzelm@64390
  1789
exposed to Isabelle/ML user-space. Potential INCOMPATIBILITY.
wenzelm@64390
  1790
wenzelm@62861
  1791
* The ML function "ML" provides easy access to run-time compilation.
wenzelm@62861
  1792
This is particularly useful for conditional compilation, without
wenzelm@62861
  1793
requiring separate files.
wenzelm@62861
  1794
wenzelm@62498
  1795
* Option ML_exception_debugger controls detailed exception trace via the
wenzelm@62498
  1796
Poly/ML debugger. Relevant ML modules need to be compiled beforehand
wenzelm@62498
  1797
with ML_file_debug, or with ML_file and option ML_debugger enabled. Note
wenzelm@62498
  1798
debugger information requires consirable time and space: main
wenzelm@62498
  1799
Isabelle/HOL with full debugger support may need ML_system_64.
wenzelm@62498
  1800
wenzelm@62514
  1801
* Local_Theory.restore has been renamed to Local_Theory.reset to
wenzelm@62514
  1802
emphasize its disruptive impact on the cumulative context, notably the
wenzelm@62514
  1803
scope of 'private' or 'qualified' names. Note that Local_Theory.reset is
wenzelm@62514
  1804
only appropriate when targets are managed, e.g. starting from a global
wenzelm@62514
  1805
theory and returning to it. Regular definitional packages should use
wenzelm@62514
  1806
balanced blocks of Local_Theory.open_target versus
wenzelm@62514
  1807
Local_Theory.close_target instead. Rare INCOMPATIBILITY.
wenzelm@62514
  1808
wenzelm@62519
  1809
* Structure TimeLimit (originally from the SML/NJ library) has been
wenzelm@62519
  1810
replaced by structure Timeout, with slightly different signature.
wenzelm@62519
  1811
INCOMPATIBILITY.
wenzelm@62519
  1812
wenzelm@62551
  1813
* Discontinued cd and pwd operations, which are not well-defined in a
wenzelm@62551
  1814
multi-threaded environment. Note that files are usually located
wenzelm@62551
  1815
relatively to the master directory of a theory (see also
wenzelm@62551
  1816
File.full_path). Potential INCOMPATIBILITY.
wenzelm@62551
  1817
wenzelm@63352
  1818
* Binding.empty_atts supersedes Thm.empty_binding and
wenzelm@63352
  1819
Attrib.empty_binding. Minor INCOMPATIBILITY.
wenzelm@63352
  1820
wenzelm@62498
  1821
wenzelm@62354
  1822
*** System ***
wenzelm@62354
  1823
wenzelm@64390
  1824
* SML/NJ and old versions of Poly/ML are no longer supported.
wenzelm@64390
  1825
wenzelm@64390
  1826
* Poly/ML heaps now follow the hierarchy of sessions, and thus require
wenzelm@64390
  1827
much less disk space.
wenzelm@63226
  1828
wenzelm@62591
  1829
* The Isabelle ML process is now managed directly by Isabelle/Scala, and
wenzelm@62591
  1830
shell scripts merely provide optional command-line access. In
wenzelm@62591
  1831
particular:
wenzelm@62591
  1832
wenzelm@62591
  1833
  . Scala module ML_Process to connect to the raw ML process,
wenzelm@62591
  1834
    with interaction via stdin/stdout/stderr or in batch mode;
wenzelm@62591
  1835
  . command-line tool "isabelle console" as interactive wrapper;
wenzelm@62591
  1836
  . command-line tool "isabelle process" as batch mode wrapper.
wenzelm@62588
  1837
wenzelm@62588
  1838
* The executable "isabelle_process" has been discontinued. Tools and
wenzelm@62588
  1839
prover front-ends should use ML_Process or Isabelle_Process in
wenzelm@62591
  1840
Isabelle/Scala. INCOMPATIBILITY.
wenzelm@62588
  1841
wenzelm@62588
  1842
* New command-line tool "isabelle process" supports ML evaluation of
wenzelm@62588
  1843
literal expressions (option -e) or files (option -f) in the context of a
wenzelm@62588
  1844
given heap image. Errors lead to premature exit of the ML process with
wenzelm@62588
  1845
return code 1.
wenzelm@62588
  1846
wenzelm@64390
  1847
* The command-line tool "isabelle build" supports option -N for cyclic
wenzelm@64390
  1848
shuffling of NUMA CPU nodes. This may help performance tuning on Linux
wenzelm@64390
  1849
servers with separate CPU/memory modules.
wenzelm@64390
  1850
wenzelm@64390
  1851
* System option "threads" (for the size of the Isabelle/ML thread farm)
wenzelm@64390
  1852
is also passed to the underlying ML runtime system as --gcthreads,
wenzelm@64274
  1853
unless there is already a default provided via ML_OPTIONS settings.
wenzelm@64274
  1854
wenzelm@63827
  1855
* System option "checkpoint" helps to fine-tune the global heap space
wenzelm@63827
  1856
management of isabelle build. This is relevant for big sessions that may
wenzelm@63827
  1857
exhaust the small 32-bit address space of the ML process (which is used
wenzelm@63827
  1858
by default).
wenzelm@63827
  1859
wenzelm@64308
  1860
* System option "profiling" specifies the mode for global ML profiling
wenzelm@64342
  1861
in "isabelle build". Possible values are "time", "allocations". The
wenzelm@64342
  1862
command-line tool "isabelle profiling_report" helps to digest the
wenzelm@64342
  1863
resulting log files.
wenzelm@64308
  1864
wenzelm@63986
  1865
* System option "ML_process_policy" specifies an optional command prefix
wenzelm@63986
  1866
for the underlying ML process, e.g. to control CPU affinity on
wenzelm@63987
  1867
multiprocessor systems. The "isabelle jedit" tool allows to override the
wenzelm@63987
  1868
implicit default via option -p.
wenzelm@63986
  1869
wenzelm@64390
  1870
* Command-line tool "isabelle console" provides option -r to help to
wenzelm@64390
  1871
bootstrapping Isabelle/Pure interactively.
wenzelm@64390
  1872
wenzelm@64390
  1873
* Command-line tool "isabelle yxml" has been discontinued.
wenzelm@64390
  1874
INCOMPATIBILITY, use operations from the modules "XML" and "YXML" in
wenzelm@64390
  1875
Isabelle/ML or Isabelle/Scala.
wenzelm@64390
  1876
wenzelm@64390
  1877
* Many Isabelle tools that require a Java runtime system refer to the
wenzelm@64390
  1878
settings ISABELLE_TOOL_JAVA_OPTIONS32 / ISABELLE_TOOL_JAVA_OPTIONS64,
wenzelm@64390
  1879
depending on the underlying platform. The settings for "isabelle build"
wenzelm@64390
  1880
ISABELLE_BUILD_JAVA_OPTIONS32 / ISABELLE_BUILD_JAVA_OPTIONS64 have been
wenzelm@64390
  1881
discontinued. Potential INCOMPATIBILITY.
wenzelm@64390
  1882
wenzelm@64390
  1883
* The Isabelle system environment always ensures that the main
wenzelm@64390
  1884
executables are found within the shell search $PATH: "isabelle" and
wenzelm@64390
  1885
"isabelle_scala_script".
wenzelm@64390
  1886
wenzelm@64390
  1887
* Isabelle tools may consist of .scala files: the Scala compiler is
wenzelm@64390
  1888
invoked on the spot. The source needs to define some object that extends
wenzelm@64390
  1889
Isabelle_Tool.Body.
wenzelm@64390
  1890
wenzelm@64390
  1891
* File.bash_string, File.bash_path etc. represent Isabelle/ML and
wenzelm@64390
  1892
Isabelle/Scala strings authentically within GNU bash. This is useful to
wenzelm@64390
  1893
produce robust shell scripts under program control, without worrying
wenzelm@64390
  1894
about spaces or special characters. Note that user output works via
wenzelm@64390
  1895
Path.print (ML) or Path.toString (Scala). INCOMPATIBILITY, the old (and
wenzelm@64390
  1896
less versatile) operations File.shell_quote, File.shell_path etc. have
wenzelm@64390
  1897
been discontinued.
wenzelm@64390
  1898
wenzelm@63995
  1899
* The isabelle_java executable allows to run a Java process within the
wenzelm@63995
  1900
name space of Java and Scala components that are bundled with Isabelle,
wenzelm@63995
  1901
but without the Isabelle settings environment.
wenzelm@63995
  1902
wenzelm@64390
  1903
* Isabelle/Scala: the SSH module supports ssh and sftp connections, for
wenzelm@64390
  1904
remote command-execution and file-system access. This resembles
wenzelm@64390
  1905
operations from module File and Isabelle_System to some extent. Note
wenzelm@64390
  1906
that Path specifications need to be resolved remotely via
wenzelm@64390
  1907
ssh.remote_path instead of File.standard_path: the implicit process
wenzelm@64390
  1908
environment is different, Isabelle settings are not available remotely.
wenzelm@64390
  1909
wenzelm@64390
  1910
* Isabelle/Scala: the Mercurial module supports repositories via the
wenzelm@64390
  1911
regular hg command-line interface. The repositroy clone and working
wenzelm@64390
  1912
directory may reside on a local or remote file-system (via ssh
wenzelm@64390
  1913
connection).
wenzelm@64265
  1914
wenzelm@62354
  1915
wenzelm@62354
  1916
wenzelm@62031
  1917
New in Isabelle2016 (February 2016)
wenzelm@62016
  1918
-----------------------------------
wenzelm@60138
  1919
wenzelm@61337
  1920
*** General ***
wenzelm@61337
  1921
wenzelm@62168
  1922
* Eisbach is now based on Pure instead of HOL. Objects-logics may import
wenzelm@62168
  1923
either the theory ~~/src/HOL/Eisbach/Eisbach (for HOL etc.) or
wenzelm@62168
  1924
~~/src/HOL/Eisbach/Eisbach_Old_Appl_Syntax (for FOL, ZF etc.). Note that
wenzelm@62168
  1925
the HOL-Eisbach session located in ~~/src/HOL/Eisbach/ contains further
wenzelm@62168
  1926
examples that do require HOL.
wenzelm@62168
  1927
wenzelm@62157
  1928
* Better resource usage on all platforms (Linux, Windows, Mac OS X) for
wenzelm@62157
  1929
both Isabelle/ML and Isabelle/Scala.  Slightly reduced heap space usage.
wenzelm@62157
  1930
wenzelm@62017
  1931
* Former "xsymbols" syntax with Isabelle symbols is used by default,
wenzelm@62017
  1932
without any special print mode. Important ASCII replacement syntax
wenzelm@62017
  1933
remains available under print mode "ASCII", but less important syntax
wenzelm@62017
  1934
has been removed (see below).
wenzelm@62017
  1935
wenzelm@62109
  1936
* Support for more arrow symbols, with rendering in LaTeX and Isabelle
wenzelm@62109
  1937
fonts: \<Lleftarrow> \<Rrightarrow> \<longlongleftarrow> \<longlongrightarrow> \<longlonglongleftarrow> \<longlonglongrightarrow>.
wenzelm@62017
  1938
wenzelm@62108
  1939
* Special notation \<struct> for the first implicit 'structure' in the
wenzelm@62108
  1940
context has been discontinued. Rare INCOMPATIBILITY, use explicit
wenzelm@62108
  1941
structure name instead, notably in indexed notation with block-subscript
wenzelm@62108
  1942
(e.g. \<odot>\<^bsub>A\<^esub>).
wenzelm@62108
  1943
wenzelm@62108
  1944
* The glyph for \<diamond> in the IsabelleText font now corresponds better to its
wenzelm@62108
  1945
counterpart \<box> as quantifier-like symbol. A small diamond is available as
wenzelm@62108
  1946
\<diamondop>; the old symbol \<struct> loses this rendering and any special
wenzelm@62108
  1947
meaning.
wenzelm@62108
  1948
wenzelm@62017
  1949
* Syntax for formal comments "-- text" now also supports the symbolic
wenzelm@62017
  1950
form "\<comment> text". Command-line tool "isabelle update_cartouches -c" helps
wenzelm@62017
  1951
to update old sources.
wenzelm@62017
  1952
wenzelm@61337
  1953
* Toplevel theorem statements have been simplified as follows:
wenzelm@61337
  1954
wenzelm@61337
  1955
  theorems             ~>  lemmas
wenzelm@61337
  1956
  schematic_lemma      ~>  schematic_goal
wenzelm@61337
  1957
  schematic_theorem    ~>  schematic_goal
wenzelm@61337
  1958
  schematic_corollary  ~>  schematic_goal
wenzelm@61337
  1959
wenzelm@61337
  1960
Command-line tool "isabelle update_theorems" updates theory sources
wenzelm@61337
  1961
accordingly.
wenzelm@61337
  1962
wenzelm@61338
  1963
* Toplevel theorem statement 'proposition' is another alias for
wenzelm@61338
  1964
'theorem'.
wenzelm@61338
  1965
wenzelm@62169
  1966
* The old 'defs' command has been removed (legacy since Isabelle2014).
wenzelm@62169
  1967
INCOMPATIBILITY, use regular 'definition' instead. Overloaded and/or
wenzelm@62169
  1968
deferred definitions require a surrounding 'overloading' block.
wenzelm@62169
  1969
wenzelm@61337
  1970
wenzelm@60610
  1971
*** Prover IDE -- Isabelle/Scala/jEdit ***
wenzelm@60610
  1972
wenzelm@60986
  1973
* IDE support for the source-level debugger of Poly/ML, to work with
wenzelm@62253
  1974
Isabelle/ML and official Standard ML. Option "ML_debugger" and commands
wenzelm@62253
  1975
'ML_file_debug', 'ML_file_no_debug', 'SML_file_debug',
wenzelm@62253
  1976
'SML_file_no_debug' control compilation of sources with or without
wenzelm@62253
  1977
debugging information. The Debugger panel allows to set breakpoints (via
wenzelm@62253
  1978
context menu), step through stopped threads, evaluate local ML
wenzelm@62253
  1979
expressions etc. At least one Debugger view needs to be active to have
wenzelm@62253
  1980
any effect on the running ML program.
wenzelm@60984
  1981
wenzelm@61803
  1982
* The State panel manages explicit proof state output, with dynamic
wenzelm@61803
  1983
auto-update according to cursor movement. Alternatively, the jEdit
wenzelm@61803
  1984
action "isabelle.update-state" (shortcut S+ENTER) triggers manual
wenzelm@61803
  1985
update.
wenzelm@61729
  1986
wenzelm@61729
  1987
* The Output panel no longer shows proof state output by default, to
wenzelm@61729
  1988
avoid GUI overcrowding. INCOMPATIBILITY, use the State panel instead or
wenzelm@61729
  1989
enable option "editor_output_state".
wenzelm@61215
  1990
wenzelm@61803
  1991
* The text overview column (status of errors, warnings etc.) is updated
wenzelm@61803
  1992
asynchronously, leading to much better editor reactivity. Moreover, the
wenzelm@61803
  1993
full document node content is taken into account. The width of the
wenzelm@61803
  1994
column is scaled according to the main text area font, for improved
wenzelm@61803
  1995
visibility.
wenzelm@61803
  1996
wenzelm@61803
  1997
* The main text area no longer changes its color hue in outdated
wenzelm@61803
  1998
situations. The text overview column takes over the role to indicate
wenzelm@61803
  1999
unfinished edits in the PIDE pipeline. This avoids flashing text display
wenzelm@61803
  2000
due to ad-hoc updates by auxiliary GUI components, such as the State
wenzelm@61803
  2001
panel.
wenzelm@61803
  2002
wenzelm@62254
  2003
* Slightly improved scheduling for urgent print tasks (e.g. command
wenzelm@62254
  2004
state output, interactive queries) wrt. long-running background tasks.
wenzelm@62017
  2005
wenzelm@62017
  2006
* Completion of symbols via prefix of \<name> or \<^name> or \name is
wenzelm@62017
  2007
always possible, independently of the language context. It is never
wenzelm@62017
  2008
implicit: a popup will show up unconditionally.
wenzelm@62017
  2009
wenzelm@62017
  2010
* Additional abbreviations for syntactic completion may be specified in
wenzelm@62017
  2011
$ISABELLE_HOME/etc/abbrevs and $ISABELLE_HOME_USER/etc/abbrevs, with
wenzelm@62017
  2012
support for simple templates using ASCII 007 (bell) as placeholder.
wenzelm@62017
  2013
wenzelm@62234
  2014
* Symbols \<oplus>, \<Oplus>, \<otimes>, \<Otimes>, \<odot>, \<Odot>, \<ominus>, \<oslash> no longer provide abbreviations for
wenzelm@62234
  2015
completion like "+o", "*o", ".o" etc. -- due to conflicts with other
wenzelm@62234
  2016
ASCII syntax. INCOMPATIBILITY, use plain backslash-completion or define
wenzelm@62234
  2017
suitable abbreviations in $ISABELLE_HOME_USER/etc/abbrevs.
wenzelm@62234
  2018
wenzelm@61483
  2019
* Action "isabelle-emph" (with keyboard shortcut C+e LEFT) controls
wenzelm@61483
  2020
emphasized text style; the effect is visible in document output, not in
wenzelm@61483
  2021
the editor.
wenzelm@61483
  2022
wenzelm@61483
  2023
* Action "isabelle-reset" now uses keyboard shortcut C+e BACK_SPACE,
wenzelm@61483
  2024
instead of former C+e LEFT.
wenzelm@61483
  2025
wenzelm@61512
  2026
* The command-line tool "isabelle jedit" and the isabelle.Main
wenzelm@62027
  2027
application wrapper treat the default $USER_HOME/Scratch.thy more
wenzelm@61512
  2028
uniformly, and allow the dummy file argument ":" to open an empty buffer
wenzelm@61512
  2029
instead.
wenzelm@61512
  2030
wenzelm@62017
  2031
* New command-line tool "isabelle jedit_client" allows to connect to an
wenzelm@62017
  2032
already running Isabelle/jEdit process. This achieves the effect of
wenzelm@62017
  2033
single-instance applications seen on common GUI desktops.
wenzelm@62017
  2034
wenzelm@61529
  2035
* The default look-and-feel for Linux is the traditional "Metal", which
wenzelm@61529
  2036
works better with GUI scaling for very high-resolution displays (e.g.
wenzelm@61529
  2037
4K). Moreover, it is generally more robust than "Nimbus".
wenzelm@61529
  2038
wenzelm@62163
  2039
* Update to jedit-5.3.0, with improved GUI scaling and support of
wenzelm@62163
  2040
high-resolution displays (e.g. 4K).
wenzelm@62163
  2041
wenzelm@62034
  2042
* The main Isabelle executable is managed as single-instance Desktop
wenzelm@62034
  2043
application uniformly on all platforms: Linux, Windows, Mac OS X.
wenzelm@62034
  2044
wenzelm@60610
  2045
wenzelm@61405
  2046
*** Document preparation ***
wenzelm@61405
  2047
wenzelm@62017
  2048
* Commands 'paragraph' and 'subparagraph' provide additional section
wenzelm@62017
  2049
headings. Thus there are 6 levels of standard headings, as in HTML.
wenzelm@62017
  2050
wenzelm@62017
  2051
* Command 'text_raw' has been clarified: input text is processed as in
wenzelm@62017
  2052
'text' (with antiquotations and control symbols). The key difference is
wenzelm@62017
  2053
the lack of the surrounding isabelle markup environment in output.
wenzelm@62017
  2054
wenzelm@62017
  2055
* Text is structured in paragraphs and nested lists, using notation that
wenzelm@62017
  2056
is similar to Markdown. The control symbols for list items are as
wenzelm@62017
  2057
follows:
wenzelm@62017
  2058
wenzelm@62017
  2059
  \<^item>  itemize
wenzelm@62017
  2060
  \<^enum>  enumerate
wenzelm@62017
  2061
  \<^descr>  description
wenzelm@62017
  2062
wenzelm@61491
  2063
* There is a new short form for antiquotations with a single argument
wenzelm@61491
  2064
that is a cartouche: \<^name>\<open>...\<close> is equivalent to @{name \<open>...\<close>} and
wenzelm@61595
  2065
\<open>...\<close> without control symbol is equivalent to @{cartouche \<open>...\<close>}.
wenzelm@61595
  2066
\<^name> without following cartouche is equivalent to @{name}. The
wenzelm@61501
  2067
standard Isabelle fonts provide glyphs to render important control
wenzelm@61501
  2068
symbols, e.g. "\<^verbatim>", "\<^emph>", "\<^bold>".
wenzelm@61491
  2069
wenzelm@61595
  2070
* Antiquotations @{noindent}, @{smallskip}, @{medskip}, @{bigskip} with
wenzelm@61595
  2071
corresponding control symbols \<^noindent>, \<^smallskip>, \<^medskip>, \<^bigskip> specify spacing formally, using
wenzelm@61595
  2072
standard LaTeX macros of the same names.
wenzelm@61595
  2073
wenzelm@61491
  2074
* Antiquotation @{cartouche} in Isabelle/Pure is the same as @{text}.
wenzelm@61491
  2075
Consequently, \<open>...\<close> without any decoration prints literal quasi-formal
wenzelm@61492
  2076
text. Command-line tool "isabelle update_cartouches -t" helps to update
wenzelm@61492
  2077
old sources, by approximative patching of the content of string and
wenzelm@61492
  2078
cartouche tokens seen in theory sources.
wenzelm@61491
  2079
wenzelm@61491
  2080
* The @{text} antiquotation now ignores the antiquotation option
wenzelm@61491
  2081
"source". The given text content is output unconditionally, without any
wenzelm@61491
  2082
surrounding quotes etc. Subtle INCOMPATIBILITY, put quotes into the
wenzelm@61494
  2083
argument where they are really intended, e.g. @{text \<open>"foo"\<close>}. Initial
wenzelm@61494
  2084
or terminal spaces are ignored.
wenzelm@61491
  2085
wenzelm@62017
  2086
* Antiquotations @{emph} and @{bold} output LaTeX source recursively,
wenzelm@62017
  2087
adding appropriate text style markup. These may be used in the short
wenzelm@62017
  2088
form \<^emph>\<open>...\<close> and \<^bold>\<open>...\<close>.
wenzelm@62017
  2089
wenzelm@62017
  2090
* Document antiquotation @{footnote} outputs LaTeX source recursively,
wenzelm@62017
  2091
marked as \footnote{}. This may be used in the short form \<^footnote>\<open>...\<close>.
wenzelm@62017
  2092
wenzelm@62017
  2093
* Antiquotation @{verbatim [display]} supports option "indent".
wenzelm@62017
  2094
wenzelm@62017
  2095
* Antiquotation @{theory_text} prints uninterpreted theory source text
wenzelm@62231
  2096
(Isar outer syntax with command keywords etc.). This may be used in the
wenzelm@62231
  2097
short form \<^theory_text>\<open>...\<close>. @{theory_text [display]} supports option "indent".
wenzelm@62017
  2098
wenzelm@62017
  2099
* Antiquotation @{doc ENTRY} provides a reference to the given
wenzelm@62017
  2100
documentation, with a hyperlink in the Prover IDE.
wenzelm@62017
  2101
wenzelm@62017
  2102
* Antiquotations @{command}, @{method}, @{attribute} print checked
wenzelm@62017
  2103
entities of the Isar language.
wenzelm@62017
  2104
wenzelm@61471
  2105
* HTML presentation uses the standard IsabelleText font and Unicode
wenzelm@61471
  2106
rendering of Isabelle symbols like Isabelle/Scala/jEdit.  The former
wenzelm@61488
  2107
print mode "HTML" loses its special meaning.
wenzelm@61471
  2108
wenzelm@61405
  2109
wenzelm@60406
  2110
*** Isar ***
wenzelm@60406
  2111
wenzelm@62205
  2112
* Local goals ('have', 'show', 'hence', 'thus') allow structured rule
wenzelm@62205
  2113
statements like fixes/assumes/shows in theorem specifications, but the
wenzelm@62205
  2114
notation is postfix with keywords 'if' (or 'when') and 'for'. For
wenzelm@60555
  2115
example:
wenzelm@60414
  2116
wenzelm@60414
  2117
  have result: "C x y"
wenzelm@60414
  2118
    if "A x" and "B y"
wenzelm@60414
  2119
    for x :: 'a and y :: 'a
wenzelm@60414
  2120
    <proof>
wenzelm@60414
  2121
wenzelm@60449
  2122
The local assumptions are bound to the name "that". The result is
wenzelm@60449
  2123
exported from context of the statement as usual. The above roughly
wenzelm@60414
  2124
corresponds to a raw proof block like this:
wenzelm@60414
  2125
wenzelm@60414
  2126
  {
wenzelm@60414
  2127
    fix x :: 'a and y :: 'a
wenzelm@60449
  2128
    assume that: "A x" "B y"
wenzelm@60414
  2129
    have "C x y" <proof>
wenzelm@60414
  2130
  }
wenzelm@60414
  2131
  note result = this
wenzelm@60406
  2132
wenzelm@60555
  2133
The keyword 'when' may be used instead of 'if', to indicate 'presume'
wenzelm@60555
  2134
instead of 'assume' above.
wenzelm@60555
  2135
wenzelm@61733
  2136
* Assumptions ('assume', 'presume') allow structured rule statements
wenzelm@61733
  2137
using 'if' and 'for', similar to 'have' etc. above. For example:
wenzelm@61658
  2138
wenzelm@61658
  2139
  assume result: "C x y"
wenzelm@61658
  2140
    if "A x" and "B y"
wenzelm@61658
  2141
    for x :: 'a and y :: 'a
wenzelm@61658
  2142
wenzelm@61658
  2143
This assumes "\<And>x y::'a. A x \<Longrightarrow> B y \<Longrightarrow> C x y" and produces a general
wenzelm@61658
  2144
result as usual: "A ?x \<Longrightarrow> B ?y \<Longrightarrow> C ?x ?y".
wenzelm@61658
  2145
wenzelm@61658
  2146
Vacuous quantification in assumptions is omitted, i.e. a for-context
wenzelm@61658
  2147
only effects propositions according to actual use of variables. For
wenzelm@61658
  2148
example:
wenzelm@61658
  2149
wenzelm@61658
  2150
  assume "A x" and "B y" for x and y
wenzelm@61658
  2151
wenzelm@61658
  2152
is equivalent to:
wenzelm@61658
  2153
wenzelm@61658
  2154
  assume "\<And>x. A x" and "\<And>y. B y"
wenzelm@61658
  2155
wenzelm@60595
  2156
* The meaning of 'show' with Pure rule statements has changed: premises
wenzelm@60595
  2157
are treated in the sense of 'assume', instead of 'presume'. This means,
wenzelm@62205
  2158
a goal like "\<And>x. A x \<Longrightarrow> B x \<Longrightarrow> C x" can be solved completely as
wenzelm@62205
  2159
follows:
wenzelm@60595
  2160
wenzelm@60595
  2161
  show "\<And>x. A x \<Longrightarrow> B x \<Longrightarrow> C x"
wenzelm@60595
  2162
wenzelm@60595
  2163
or:
wenzelm@60595
  2164
wenzelm@60595
  2165
  show "C x" if "A x" "B x" for x
wenzelm@60595
  2166
wenzelm@60595
  2167
Rare INCOMPATIBILITY, the old behaviour may be recovered as follows:
wenzelm@60595
  2168
wenzelm@60595
  2169
  show "C x" when "A x" "B x" for x
wenzelm@60595
  2170
wenzelm@60459
  2171
* New command 'consider' states rules for generalized elimination and
wenzelm@60459
  2172
case splitting. This is like a toplevel statement "theorem obtains" used
wenzelm@60459
  2173
within a proof body; or like a multi-branch 'obtain' without activation
wenzelm@60459
  2174
of the local context elements yet.
wenzelm@60459
  2175
wenzelm@60455
  2176
* Proof method "cases" allows to specify the rule as first entry of
wenzelm@60455
  2177
chained facts.  This is particularly useful with 'consider':
wenzelm@60455
  2178
wenzelm@60455
  2179
  consider (a) A | (b) B | (c) C <proof>
wenzelm@60455
  2180
  then have something
wenzelm@60455
  2181
  proof cases
wenzelm@60455
  2182
    case a
wenzelm@60455
  2183
    then show ?thesis <proof>
wenzelm@60455
  2184
  next
wenzelm@60455
  2185
    case b
wenzelm@60455
  2186
    then show ?thesis <proof>
wenzelm@60455
  2187
  next
wenzelm@60455
  2188
    case c
wenzelm@60455
  2189
    then show ?thesis <proof>
wenzelm@60455
  2190
  qed
wenzelm@60455
  2191
wenzelm@60565
  2192
* Command 'case' allows fact name and attribute specification like this:
wenzelm@60565
  2193
wenzelm@60565
  2194
  case a: (c xs)
wenzelm@60565
  2195
  case a [attributes]: (c xs)
wenzelm@60565
  2196
wenzelm@60565
  2197
Facts that are introduced by invoking the case context are uniformly
wenzelm@60565
  2198
qualified by "a"; the same name is used for the cumulative fact. The old
wenzelm@60565
  2199
form "case (c xs) [attributes]" is no longer supported. Rare
wenzelm@60565
  2200
INCOMPATIBILITY, need to adapt uses of case facts in exotic situations,
wenzelm@60565
  2201
and always put attributes in front.
wenzelm@60565
  2202
wenzelm@60618
  2203
* The standard proof method of commands 'proof' and '..' is now called
wenzelm@60618
  2204
"standard" to make semantically clear what it is; the old name "default"
wenzelm@60618
  2205
is still available as legacy for some time. Documentation now explains
wenzelm@60618
  2206
'..' more accurately as "by standard" instead of "by rule".
wenzelm@60618
  2207
wenzelm@62017
  2208
* Nesting of Isar goal structure has been clarified: the context after
wenzelm@62017
  2209
the initial backwards refinement is retained for the whole proof, within
wenzelm@62017
  2210
all its context sections (as indicated via 'next'). This is e.g.
wenzelm@62017
  2211
relevant for 'using', 'including', 'supply':
wenzelm@62017
  2212
wenzelm@62017
  2213
  have "A \<and> A" if a: A for A
wenzelm@62017
  2214
    supply [simp] = a
wenzelm@62017
  2215
  proof
wenzelm@62017
  2216
    show A by simp
wenzelm@62017
  2217
  next
wenzelm@62017
  2218
    show A by simp
wenzelm@62017
  2219
  qed
wenzelm@62017
  2220
wenzelm@62017
  2221
* Command 'obtain' binds term abbreviations (via 'is' patterns) in the
wenzelm@62017
  2222
proof body as well, abstracted over relevant parameters.
wenzelm@62017
  2223
wenzelm@62017
  2224
* Improved type-inference for theorem statement 'obtains': separate
wenzelm@62017
  2225
parameter scope for of each clause.
wenzelm@62017
  2226
wenzelm@62017
  2227
* Term abbreviations via 'is' patterns also work for schematic
wenzelm@62017
  2228
statements: result is abstracted over unknowns.
wenzelm@62017
  2229
wenzelm@60631
  2230
* Command 'subgoal' allows to impose some structure on backward
wenzelm@60631
  2231
refinements, to avoid proof scripts degenerating into long of 'apply'
wenzelm@60631
  2232
sequences. Further explanations and examples are given in the isar-ref
wenzelm@60631
  2233
manual.
wenzelm@60631
  2234
wenzelm@62017
  2235
* Command 'supply' supports fact definitions during goal refinement
wenzelm@62017
  2236
('apply' scripts).
wenzelm@62017
  2237
wenzelm@61166
  2238
* Proof method "goal_cases" turns the current subgoals into cases within
wenzelm@61166
  2239
the context; the conclusion is bound to variable ?case in each case. For
wenzelm@61166
  2240
example:
wenzelm@60617
  2241
wenzelm@60617
  2242
lemma "\<And>x. A x \<Longrightarrow> B x \<Longrightarrow> C x"
wenzelm@60622
  2243
  and "\<And>y z. U y \<Longrightarrow> V z \<Longrightarrow> W y z"
wenzelm@61166
  2244
proof goal_cases
wenzelm@60622
  2245
  case (1 x)
wenzelm@60622
  2246
  then show ?case using \<open>A x\<close> \<open>B x\<close> sorry
wenzelm@60622
  2247
next
wenzelm@60622
  2248
  case (2 y z)
wenzelm@60622
  2249
  then show ?case using \<open>U y\<close> \<open>V z\<close> sorry
wenzelm@60622
  2250
qed
wenzelm@60622
  2251
wenzelm@60622
  2252
lemma "\<And>x. A x \<Longrightarrow> B x \<Longrightarrow> C x"
wenzelm@60622
  2253
  and "\<And>y z. U y \<Longrightarrow> V z \<Longrightarrow> W y z"
wenzelm@61166
  2254
proof goal_cases
wenzelm@60617
  2255
  case prems: 1
wenzelm@60617
  2256
  then show ?case using prems sorry
wenzelm@60617
  2257
next
wenzelm@60617
  2258
  case prems: 2
wenzelm@60617
  2259
  then show ?case using prems sorry
wenzelm@60617
  2260
qed
wenzelm@60578
  2261
wenzelm@60581
  2262
* The undocumented feature of implicit cases goal1, goal2, goal3, etc.
wenzelm@60617
  2263
is marked as legacy, and will be removed eventually. The proof method
wenzelm@60617
  2264
"goals" achieves a similar effect within regular Isar; often it can be
wenzelm@60617
  2265
done more adequately by other means (e.g. 'consider').
wenzelm@60581
  2266
wenzelm@62017
  2267
* The vacuous fact "TERM x" may be established "by fact" or as `TERM x`
wenzelm@62017
  2268
as well, not just "by this" or "." as before.
wenzelm@60551
  2269
wenzelm@60554
  2270
* Method "sleep" succeeds after a real-time delay (in seconds). This is
wenzelm@60554
  2271
occasionally useful for demonstration and testing purposes.
wenzelm@60554
  2272
wenzelm@60406
  2273
wenzelm@60331
  2274
*** Pure ***
wenzelm@60331
  2275
wenzelm@61606
  2276
* Qualifiers in locale expressions default to mandatory ('!') regardless
wenzelm@61606
  2277
of the command. Previously, for 'locale' and 'sublocale' the default was
wenzelm@61606
  2278
optional ('?'). The old synatx '!' has been discontinued.
wenzelm@61606
  2279
INCOMPATIBILITY, remove '!' and add '?' as required.
ballarin@61565
  2280
ballarin@61566
  2281
* Keyword 'rewrites' identifies rewrite morphisms in interpretation
wenzelm@62017
  2282
commands. Previously, the keyword was 'where'. INCOMPATIBILITY.
ballarin@61566
  2283
ballarin@61701
  2284
* More gentle suppression of syntax along locale morphisms while
wenzelm@62017
  2285
printing terms. Previously 'abbreviation' and 'notation' declarations
wenzelm@62017
  2286
would be suppressed for morphisms except term identity. Now
ballarin@61701
  2287
'abbreviation' is also kept for morphims that only change the involved
wenzelm@62017
  2288
parameters, and only 'notation' is suppressed. This can be of great help
wenzelm@62017
  2289
when working with complex locale hierarchies, because proof states are
wenzelm@62017
  2290
displayed much more succinctly. It also means that only notation needs
wenzelm@62017
  2291
to be redeclared if desired, as illustrated by this example:
ballarin@61701
  2292
ballarin@61701
  2293
  locale struct = fixes composition :: "'a => 'a => 'a" (infixl "\<cdot>" 65)
ballarin@61701
  2294
  begin
ballarin@61701
  2295
    definition derived (infixl "\<odot>" 65) where ...
ballarin@61701
  2296
  end
ballarin@61701
  2297
ballarin@61701
  2298
  locale morphism =
ballarin@61701
  2299
    left: struct composition + right: struct composition'
ballarin@61701
  2300
    for composition (infix "\<cdot>" 65) and composition' (infix "\<cdot>''" 65)
ballarin@61701
  2301
  begin
ballarin@61701
  2302
    notation right.derived ("\<odot>''")
ballarin@61701
  2303
  end
ballarin@61701
  2304
wenzelm@61895
  2305
* Command 'global_interpretation' issues interpretations into global
wenzelm@61895
  2306
theories, with optional rewrite definitions following keyword 'defines'.
wenzelm@61895
  2307
wenzelm@61895
  2308
* Command 'sublocale' accepts optional rewrite definitions after keyword
haftmann@61675
  2309
'defines'.
haftmann@61675
  2310
wenzelm@61895
  2311
* Command 'permanent_interpretation' has been discontinued. Use
wenzelm@61895
  2312
'global_interpretation' or 'sublocale' instead. INCOMPATIBILITY.
haftmann@61670
  2313
wenzelm@61252
  2314
* Command 'print_definitions' prints dependencies of definitional
wenzelm@61252
  2315
specifications. This functionality used to be part of 'print_theory'.
wenzelm@61252
  2316
wenzelm@60331
  2317
* Configuration option rule_insts_schematic has been discontinued
wenzelm@62017
  2318
(intermediate legacy feature in Isabelle2015). INCOMPATIBILITY.
wenzelm@60331
  2319
wenzelm@62205
  2320
* Abbreviations in type classes now carry proper sort constraint. Rare
wenzelm@62205
  2321
INCOMPATIBILITY in situations where the previous misbehaviour has been
wenzelm@62205
  2322
exploited.
haftmann@60347
  2323
haftmann@60347
  2324
* Refinement of user-space type system in type classes: pseudo-local
wenzelm@62205
  2325
operations behave more similar to abbreviations. Potential
haftmann@60347
  2326
INCOMPATIBILITY in exotic situations.
haftmann@60347
  2327
haftmann@60347
  2328
nipkow@60171
  2329
*** HOL ***
nipkow@60171
  2330
wenzelm@62017
  2331
* The 'typedef' command has been upgraded from a partially checked
wenzelm@62017
  2332
"axiomatization", to a full definitional specification that takes the
wenzelm@62017
  2333
global collection of overloaded constant / type definitions into
wenzelm@62017
  2334
account. Type definitions with open dependencies on overloaded
wenzelm@62017
  2335
definitions need to be specified as "typedef (overloaded)". This
wenzelm@62017
  2336
provides extra robustness in theory construction. Rare INCOMPATIBILITY.
wenzelm@62017
  2337
wenzelm@62017
  2338
* Qualification of various formal entities in the libraries is done more
wenzelm@62017
  2339
uniformly via "context begin qualified definition ... end" instead of
wenzelm@62017
  2340
old-style "hide_const (open) ...". Consequently, both the defined
wenzelm@62017
  2341
constant and its defining fact become qualified, e.g. Option.is_none and
wenzelm@62017
  2342
Option.is_none_def. Occasional INCOMPATIBILITY in applications.
wenzelm@62017
  2343
wenzelm@62017
  2344
* Some old and rarely used ASCII replacement syntax has been removed.
wenzelm@62017
  2345
INCOMPATIBILITY, standard syntax with symbols should be used instead.
wenzelm@62017
  2346
The subsequent commands help to reproduce the old forms, e.g. to
wenzelm@62017
  2347
simplify porting old theories:
wenzelm@62017
  2348
wenzelm@62017
  2349
  notation iff  (infixr "<->" 25)
wenzelm@62017
  2350
wenzelm@62017
  2351
  notation Times  (infixr "<*>" 80)
wenzelm@62017
  2352
wenzelm@62017
  2353
  type_notation Map.map  (infixr "~=>" 0)
wenzelm@62017
  2354
  notation Map.map_comp  (infixl "o'_m" 55)
wenzelm@62017
  2355
wenzelm@62017
  2356
  type_notation FinFun.finfun ("(_ =>f /_)" [22, 21] 21)
wenzelm@62017
  2357
wenzelm@62017
  2358
  notation FuncSet.funcset  (infixr "->" 60)
wenzelm@62017
  2359
  notation FuncSet.extensional_funcset  (infixr "->\<^sub>E" 60)
wenzelm@62017
  2360
wenzelm@62017
  2361
  notation Omega_Words_Fun.conc (infixr "conc" 65)
wenzelm@62017
  2362
wenzelm@62017
  2363
  notation Preorder.equiv ("op ~~")
wenzelm@62017
  2364
    and Preorder.equiv ("(_/ ~~ _)" [51, 51] 50)
wenzelm@62017
  2365
wenzelm@62017
  2366
  notation (in topological_space) tendsto (infixr "--->" 55)
wenzelm@62017
  2367
  notation (in topological_space) LIMSEQ ("((_)/ ----> (_))" [60, 60] 60)
wenzelm@62017
  2368
  notation LIM ("((_)/ -- (_)/ --> (_))" [60, 0, 60] 60)
wenzelm@62017
  2369
wenzelm@62017
  2370
  notation NSA.approx (infixl "@=" 50)
wenzelm@62017
  2371
  notation NSLIMSEQ ("((_)/ ----NS> (_))" [60, 60] 60)
wenzelm@62017
  2372
  notation NSLIM ("((_)/ -- (_)/ --NS> (_))" [60, 0, 60] 60)
wenzelm@62017
  2373
wenzelm@62017
  2374
* The alternative notation "\<Colon>" for type and sort constraints has been
wenzelm@62017
  2375
removed: in LaTeX document output it looks the same as "::".
wenzelm@62017
  2376
INCOMPATIBILITY, use plain "::" instead.
wenzelm@62017
  2377
wenzelm@62017
  2378
* Commands 'inductive' and 'inductive_set' work better when names for
wenzelm@62017
  2379
intro rules are omitted: the "cases" and "induct" rules no longer
wenzelm@62017
  2380
declare empty case_names, but no case_names at all. This allows to use
wenzelm@62017
  2381
numbered cases in proofs, without requiring method "goal_cases".
wenzelm@62017
  2382
wenzelm@62017
  2383
* Inductive definitions ('inductive', 'coinductive', etc.) expose
wenzelm@62017
  2384
low-level facts of the internal construction only if the option
wenzelm@62093
  2385
"inductive_internals" is enabled. This refers to the internal predicate
wenzelm@62017
  2386
definition and its monotonicity result. Rare INCOMPATIBILITY.
wenzelm@62017
  2387
wenzelm@62017
  2388
* Recursive function definitions ('fun', 'function', 'partial_function')
wenzelm@62017
  2389
expose low-level facts of the internal construction only if the option
wenzelm@62205
  2390
"function_internals" is enabled. Its internal inductive definition is
wenzelm@62205
  2391
also subject to "inductive_internals". Rare INCOMPATIBILITY.
wenzelm@62093
  2392
wenzelm@62093
  2393
* BNF datatypes ('datatype', 'codatatype', etc.) expose low-level facts
wenzelm@62093
  2394
of the internal construction only if the option "bnf_internals" is
wenzelm@62093
  2395
enabled. This supersedes the former option "bnf_note_all". Rare
wenzelm@62093
  2396
INCOMPATIBILITY.
wenzelm@62017
  2397
wenzelm@62017
  2398
* Combinator to represent case distinction on products is named
wenzelm@62017
  2399
"case_prod", uniformly, discontinuing any input aliasses. Very popular
wenzelm@62017
  2400
theorem aliasses have been retained.
wenzelm@62017
  2401
haftmann@61424
  2402
Consolidated facts:
haftmann@61424
  2403
  PairE ~> prod.exhaust
haftmann@61424
  2404
  Pair_eq ~> prod.inject
haftmann@61424
  2405
  pair_collapse ~> prod.collapse
haftmann@61424
  2406
  Pair_fst_snd_eq ~> prod_eq_iff
haftmann@61424
  2407
  split_twice ~> prod.case_distrib
haftmann@61424
  2408
  split_weak_cong ~> prod.case_cong_weak
haftmann@61424
  2409
  split_split ~> prod.split
haftmann@61424
  2410
  split_split_asm ~> prod.split_asm
haftmann@61424
  2411
  splitI ~> case_prodI
haftmann@61424
  2412
  splitD ~> case_prodD
haftmann@61424
  2413
  splitI2 ~> case_prodI2
haftmann@61424
  2414
  splitI2' ~> case_prodI2'
haftmann@61424
  2415
  splitE ~> case_prodE
haftmann@61424
  2416
  splitE' ~> case_prodE'
haftmann@61424
  2417
  split_pair ~> case_prod_Pair
haftmann@61424
  2418
  split_eta ~> case_prod_eta
haftmann@61424
  2419
  split_comp ~> case_prod_comp
haftmann@61424
  2420
  mem_splitI ~> mem_case_prodI
haftmann@61424
  2421
  mem_splitI2 ~> mem_case_prodI2
haftmann@61424
  2422
  mem_splitE ~> mem_case_prodE
haftmann@61424
  2423
  The_split ~> The_case_prod
haftmann@61424
  2424
  cond_split_eta ~> cond_case_prod_eta
haftmann@61424
  2425
  Collect_split_in_rel_leE ~> Collect_case_prod_in_rel_leE
haftmann@61424
  2426
  Collect_split_in_rel_leI ~> Collect_case_prod_in_rel_leI
haftmann@61424
  2427
  in_rel_Collect_split_eq ~> in_rel_Collect_case_prod_eq
haftmann@61424
  2428
  Collect_split_Grp_eqD ~> Collect_case_prod_Grp_eqD
haftmann@61424
  2429
  Collect_split_Grp_inD ~> Collect_case_prod_Grp_in
haftmann@61424
  2430
  Domain_Collect_split ~> Domain_Collect_case_prod
haftmann@61424
  2431
  Image_Collect_split ~> Image_Collect_case_prod
haftmann@61424
  2432
  Range_Collect_split ~> Range_Collect_case_prod
haftmann@61424
  2433
  Eps_split ~> Eps_case_prod
haftmann@61424
  2434
  Eps_split_eq ~> Eps_case_prod_eq
haftmann@61424
  2435
  split_rsp ~> case_prod_rsp
haftmann@61424
  2436
  curry_split ~> curry_case_prod
haftmann@61424
  2437
  split_curry ~> case_prod_curry
wenzelm@62017
  2438
haftmann@61424
  2439
Changes in structure HOLogic:
haftmann@61424
  2440
  split_const ~> case_prod_const
haftmann@61424
  2441
  mk_split ~> mk_case_prod
haftmann@61424
  2442
  mk_psplits ~> mk_ptupleabs
haftmann@61424
  2443
  strip_psplits ~> strip_ptupleabs
wenzelm@62017
  2444
wenzelm@62017
  2445
INCOMPATIBILITY.
wenzelm@62017
  2446
wenzelm@62017
  2447
* The coercions to type 'real' have been reorganised. The function
wenzelm@62017
  2448
'real' is no longer overloaded, but has type 'nat => real' and
wenzelm@62017
  2449
abbreviates of_nat for that type. Also 'real_of_int :: int => real'
wenzelm@62017
  2450
abbreviates of_int for that type. Other overloaded instances of 'real'
wenzelm@62017
  2451
have been replaced by 'real_of_ereal' and 'real_of_float'.
wenzelm@62017
  2452
lp15@61694
  2453
Consolidated facts (among others):
lp15@61694
  2454
  real_of_nat_le_iff -> of_nat_le_iff
lp15@61694
  2455
  real_of_nat_numeral of_nat_numeral
lp15@61694
  2456
  real_of_int_zero of_int_0
lp15@61694
  2457
  real_of_nat_zero of_nat_0
lp15@61694
  2458
  real_of_one of_int_1
lp15@61694
  2459
  real_of_int_add of_int_add
lp15@61694
  2460
  real_of_nat_add of_nat_add
lp15@61694
  2461
  real_of_int_diff of_int_diff
lp15@61694
  2462
  real_of_nat_diff of_nat_diff
lp15@61694
  2463
  floor_subtract floor_diff_of_int
lp15@61694
  2464
  real_of_int_inject of_int_eq_iff
lp15@61694
  2465
  real_of_int_gt_zero_cancel_iff of_int_0_less_iff
lp15@61694
  2466
  real_of_int_ge_zero_cancel_iff of_int_0_le_iff
lp15@61694
  2467
  real_of_nat_ge_zero of_nat_0_le_iff
lp15@61694
  2468
  real_of_int_ceiling_ge le_of_int_ceiling
lp15@61694
  2469
  ceiling_less_eq ceiling_less_iff
lp15@61694
  2470
  ceiling_le_eq ceiling_le_iff
lp15@61694
  2471
  less_floor_eq less_floor_iff
lp15@61694
  2472
  floor_less_eq floor_less_iff
lp15@61694
  2473
  floor_divide_eq_div floor_divide_of_int_eq
lp15@61694
  2474
  real_of_int_zero_cancel of_nat_eq_0_iff
lp15@61694
  2475
  ceiling_real_of_int ceiling_of_int
wenzelm@62017
  2476
wenzelm@62017
  2477
INCOMPATIBILITY.
wenzelm@61143
  2478
wenzelm@60841
  2479
* Theory Map: lemma map_of_is_SomeD was a clone of map_of_SomeD and has
wenzelm@60841
  2480
been removed. INCOMPATIBILITY.
wenzelm@60841
  2481
lars@60712
  2482
* Quickcheck setup for finite sets.
lars@60712
  2483
nipkow@60171
  2484
* Discontinued simp_legacy_precond. Potential INCOMPATIBILITY.
wenzelm@60138
  2485
blanchet@60306
  2486
* Sledgehammer:
blanchet@61318
  2487
  - The MaSh relevance filter has been sped up.
blanchet@60306
  2488
  - Proof reconstruction has been improved, to minimize the incidence of
blanchet@60306
  2489
    cases where Sledgehammer gives a proof that does not work.
blanchet@60306
  2490
  - Auto Sledgehammer now minimizes and preplays the results.
blanchet@61030
  2491
  - Handle Vampire 4.0 proof output without raising exception.
blanchet@61043
  2492
  - Eliminated "MASH" environment variable. Use the "MaSh" option in
blanchet@61043
  2493
    Isabelle/jEdit instead. INCOMPATIBILITY.
blanchet@61317
  2494
  - Eliminated obsolete "blocking" option and related subcommands.
blanchet@60306
  2495
blanchet@60310
  2496
* Nitpick:
blanchet@61325
  2497
  - Fixed soundness bug in translation of "finite" predicate.
blanchet@61324
  2498
  - Fixed soundness bug in "destroy_constrs" optimization.
blanchet@62080
  2499
  - Fixed soundness bug in translation of "rat" type.
blanchet@60310
  2500
  - Removed "check_potential" and "check_genuine" options.
blanchet@61317
  2501
  - Eliminated obsolete "blocking" option.
blanchet@60310
  2502
wenzelm@62027
  2503
* (Co)datatype package:
blanchet@61345
  2504
  - New commands "lift_bnf" and "copy_bnf" for lifting (copying) a BNF
blanchet@61345
  2505
    structure on the raw type to an abstract type defined using typedef.
blanchet@61345
  2506
  - Always generate "case_transfer" theorem.
wenzelm@62235
  2507
  - For mutual types, generate slightly stronger "rel_induct",
haftmann@63946
  2508
    "rel_coinduct", and "coinduct" theorems. INCOMPATIBILITY.
blanchet@61551
  2509
  - Allow discriminators and selectors with the same name as the type
blanchet@61551
  2510
    being defined.
blanchet@61551
  2511
  - Avoid various internal name clashes (e.g., 'datatype f = f').
traytel@60920
  2512
wenzelm@62098
  2513
* Transfer: new methods for interactive debugging of 'transfer' and
wenzelm@62098
  2514
'transfer_prover': 'transfer_start', 'transfer_step', 'transfer_end',
wenzelm@62098
  2515
'transfer_prover_start' and 'transfer_prover_end'.
kuncar@61370
  2516
kleing@62118
  2517
* New diagnostic command print_record for displaying record definitions.
kleing@62118
  2518
haftmann@60868
  2519
* Division on integers is bootstrapped directly from division on
wenzelm@62017
  2520
naturals and uses generic numeral algorithm for computations. Slight
wenzelm@62017
  2521
INCOMPATIBILITY, simproc numeral_divmod replaces and generalizes former
wenzelm@62017
  2522
simprocs binary_int_div and binary_int_mod
wenzelm@62017
  2523
wenzelm@62017
  2524
* Tightened specification of class semiring_no_zero_divisors. Minor
haftmann@60516
  2525
INCOMPATIBILITY.
haftmann@60516
  2526
haftmann@60688
  2527
* Class algebraic_semidom introduces common algebraic notions of
wenzelm@62017
  2528
integral (semi)domains, particularly units. Although logically subsumed
wenzelm@62017
  2529
by fields, is is not a super class of these in order not to burden
wenzelm@62017
  2530
fields with notions that are trivial there.
wenzelm@62017
  2531
wenzelm@62017
  2532
* Class normalization_semidom specifies canonical representants for
wenzelm@62017
  2533
equivalence classes of associated elements in an integral (semi)domain.
wenzelm@62017
  2534
This formalizes associated elements as well.
haftmann@60688
  2535
haftmann@60688
  2536
* Abstract specification of gcd/lcm operations in classes semiring_gcd,
wenzelm@62017
  2537
semiring_Gcd, semiring_Lcd. Minor INCOMPATIBILITY: facts gcd_nat.commute
wenzelm@62017
  2538
and gcd_int.commute are subsumed by gcd.commute, as well as
wenzelm@62017
  2539
gcd_nat.assoc and gcd_int.assoc by gcd.assoc.
wenzelm@62017
  2540
wenzelm@62017
  2541
* Former constants Fields.divide (_ / _) and Divides.div (_ div _) are
wenzelm@62017
  2542
logically unified to Rings.divide in syntactic type class Rings.divide,
wenzelm@62017
  2543
with infix syntax (_ div _). Infix syntax (_ / _) for field division is
wenzelm@62017
  2544
added later as abbreviation in class Fields.inverse. INCOMPATIBILITY,
wenzelm@62017
  2545
instantiations must refer to Rings.divide rather than the former
wenzelm@62017
  2546
separate constants, hence infix syntax (_ / _) is usually not available
wenzelm@62017
  2547
during instantiation.
wenzelm@62017
  2548
wenzelm@62017
  2549
* New cancellation simprocs for boolean algebras to cancel complementary
wenzelm@62017
  2550
terms for sup and inf. For example, "sup x (sup y (- x))" simplifies to
wenzelm@62017
  2551
"top". INCOMPATIBILITY.
Andreas@61629
  2552
hoelzl@62101
  2553
* Class uniform_space introduces uniform spaces btw topological spaces
hoelzl@62101
  2554
and metric spaces. Minor INCOMPATIBILITY: open_<type>_def needs to be
wenzelm@62205
  2555
introduced in the form of an uniformity. Some constants are more general
wenzelm@62205
  2556
now, it may be necessary to add type class constraints.
hoelzl@62101
  2557
hoelzl@62101
  2558
  open_real_def \<leadsto> open_dist
hoelzl@62101
  2559
  open_complex_def \<leadsto> open_dist
hoelzl@62101
  2560
wenzelm@62026
  2561
* Library/Monad_Syntax: notation uses symbols \<bind> and \<then>. INCOMPATIBILITY.
wenzelm@62026
  2562
Mathias@60397
  2563
* Library/Multiset:
Mathias@60397
  2564
  - Renamed multiset inclusion operators:
Mathias@60397
  2565
      < ~> <#
blanchet@62208
  2566
      > ~> >#
Mathias@60397
  2567
      <= ~> <=#
blanchet@62208
  2568
      >= ~> >=#
Mathias@60397
  2569
      \<le> ~> \<le>#
blanchet@62208
  2570
      \<ge> ~> \<ge>#
Mathias@60397
  2571
    INCOMPATIBILITY.
blanchet@62209
  2572
  - Added multiset inclusion operator syntax:
blanchet@62209
  2573
      \<subset>#
blanchet@62209
  2574
      \<subseteq>#
blanchet@62209
  2575
      \<supset>#
blanchet@62209
  2576
      \<supseteq>#
Mathias@60397
  2577
  - "'a multiset" is no longer an instance of the "order",
Mathias@60397
  2578
    "ordered_ab_semigroup_add_imp_le", "ordered_cancel_comm_monoid_diff",
Mathias@60397
  2579
    "semilattice_inf", and "semilattice_sup" type classes. The theorems
Mathias@60397
  2580
    previously provided by these type classes (directly or indirectly)
Mathias@60397
  2581
    are now available through the "subset_mset" interpretation
Mathias@60397
  2582
    (e.g. add_mono ~> subset_mset.add_mono).
Mathias@60397
  2583
    INCOMPATIBILITY.
nipkow@60497
  2584
  - Renamed conversions:
nipkow@60515
  2585
      multiset_of ~> mset
nipkow@60515
  2586
      multiset_of_set ~> mset_set
nipkow@60497
  2587
      set_of ~> set_mset
nipkow@60497
  2588
    INCOMPATIBILITY
Mathias@60398
  2589
  - Renamed lemmas:
Mathias@60398
  2590
      mset_le_def ~> subseteq_mset_def
Mathias@60398
  2591
      mset_less_def ~> subset_mset_def
Mathias@60400
  2592
      less_eq_multiset.rep_eq ~> subseteq_mset_def
Mathias@60400
  2593
    INCOMPATIBILITY
Mathias@60400
  2594
  - Removed lemmas generated by lift_definition:
wenzelm@62235
  2595
    less_eq_multiset.abs_eq, less_eq_multiset.rsp,
wenzelm@62235
  2596
    less_eq_multiset.transfer, less_eq_multiset_def
Mathias@60400
  2597
    INCOMPATIBILITY
wenzelm@60006
  2598
wenzelm@62017
  2599
* Library/Omega_Words_Fun: Infinite words modeled as functions nat \<Rightarrow> 'a.
wenzelm@62017
  2600
wenzelm@62017
  2601
* Library/Bourbaki_Witt_Fixpoint: Added formalisation of the
wenzelm@62017
  2602
Bourbaki-Witt fixpoint theorem for increasing functions in
wenzelm@62017
  2603
chain-complete partial orders.
wenzelm@62017
  2604
wenzelm@62017
  2605
* Library/Old_Recdef: discontinued obsolete 'defer_recdef' command.
wenzelm@62017
  2606
Minor INCOMPATIBILITY, use 'function' instead.
wenzelm@62017
  2607
wenzelm@62064
  2608
* Library/Periodic_Fun: a locale that provides convenient lemmas for
wenzelm@62064
  2609
periodic functions.
eberlm@62060
  2610
wenzelm@62098
  2611
* Library/Formal_Power_Series: proper definition of division (with
wenzelm@62098
  2612
remainder) for formal power series; instances for Euclidean Ring and
wenzelm@62098
  2613
GCD.
eberlm@62086
  2614
wenzelm@62084
  2615
* HOL-Imperative_HOL: obsolete theory Legacy_Mrec has been removed.
wenzelm@62084
  2616
wenzelm@62084
  2617
* HOL-Statespace: command 'statespace' uses mandatory qualifier for
wenzelm@62084
  2618
import of parent, as for general 'locale' expressions. INCOMPATIBILITY,
wenzelm@62084
  2619
remove '!' and add '?' as required.
wenzelm@62084
  2620
wenzelm@62237
  2621
* HOL-Decision_Procs: The "approximation" method works with "powr"
wenzelm@62237
  2622
(exponentiation on real numbers) again.
wenzelm@62237
  2623
wenzelm@62084
  2624
* HOL-Multivariate_Analysis: theory Cauchy_Integral_Thm with Contour
wenzelm@62084
  2625
integrals (= complex path integrals), Cauchy's integral theorem, winding
wenzelm@62084
  2626
numbers and Cauchy's integral formula, Liouville theorem, Fundamental
wenzelm@62084
  2627
Theorem of Algebra. Ported from HOL Light.
wenzelm@62084
  2628
wenzelm@62084
  2629
* HOL-Multivariate_Analysis: topological concepts such as connected
wenzelm@62017
  2630
components, homotopic paths and the inside or outside of a set.
wenzelm@61121
  2631
wenzelm@62084
  2632
* HOL-Multivariate_Analysis: radius of convergence of power series and
wenzelm@62064
  2633
various summability tests; Harmonic numbers and the Euler–Mascheroni
wenzelm@62064
  2634
constant; the Generalised Binomial Theorem; the complex and real
wenzelm@62064
  2635
Gamma/log-Gamma/Digamma/ Polygamma functions and their most important
wenzelm@62064
  2636
properties.
eberlm@62060
  2637
wenzelm@62084
  2638
* HOL-Probability: The central limit theorem based on Levy's uniqueness
wenzelm@62084
  2639
and continuity theorems, weak convergence, and characterisitc functions.
wenzelm@62084
  2640
wenzelm@62084
  2641
* HOL-Data_Structures: new and growing session of standard data
wenzelm@62084
  2642
structures.
lammich@61178
  2643
wenzelm@60479
  2644
wenzelm@60793
  2645
*** ML ***
wenzelm@60793
  2646
wenzelm@62017
  2647
* The following combinators for low-level profiling of the ML runtime
wenzelm@62017
  2648
system are available:
wenzelm@62017
  2649
wenzelm@62017
  2650
  profile_time          (*CPU time*)
wenzelm@62017
  2651
  profile_time_thread   (*CPU time on this thread*)
wenzelm@62017
  2652
  profile_allocations   (*overall heap allocations*)
wenzelm@62017
  2653
wenzelm@62017
  2654
* Antiquotation @{undefined} or \<^undefined> inlines (raise Match).
wenzelm@62017
  2655
wenzelm@62075
  2656
* Antiquotation @{method NAME} inlines the (checked) name of the given
wenzelm@62075
  2657
Isar proof method.
wenzelm@62075
  2658
wenzelm@61922
  2659
* Pretty printing of Poly/ML compiler output in Isabelle has been
wenzelm@61922
  2660
improved: proper treatment of break offsets and blocks with consistent
wenzelm@61922
  2661
breaks.
wenzelm@61922
  2662
wenzelm@61268
  2663
* The auxiliary module Pure/display.ML has been eliminated. Its
wenzelm@61268
  2664
elementary thm print operations are now in Pure/more_thm.ML and thus
wenzelm@61268
  2665
called Thm.pretty_thm, Thm.string_of_thm etc. INCOMPATIBILITY.
wenzelm@61268
  2666
wenzelm@61144
  2667
* Simproc programming interfaces have been simplified:
wenzelm@61144
  2668
Simplifier.make_simproc and Simplifier.define_simproc supersede various
wenzelm@61144
  2669
forms of Simplifier.mk_simproc, Simplifier.simproc_global etc. Note that
wenzelm@61144
  2670
term patterns for the left-hand sides are specified with implicitly
wenzelm@61144
  2671
fixed variables, like top-level theorem statements. INCOMPATIBILITY.
wenzelm@61144
  2672
wenzelm@60802
  2673
* Instantiation rules have been re-organized as follows:
wenzelm@60802
  2674
wenzelm@60802
  2675
  Thm.instantiate  (*low-level instantiation with named arguments*)
wenzelm@60802
  2676
  Thm.instantiate' (*version with positional arguments*)
wenzelm@60802
  2677
wenzelm@60802
  2678
  Drule.infer_instantiate  (*instantiation with type inference*)
wenzelm@60802
  2679
  Drule.infer_instantiate'  (*version with positional arguments*)
wenzelm@60802
  2680
wenzelm@60802
  2681
The LHS only requires variable specifications, instead of full terms.
wenzelm@60802
  2682
Old cterm_instantiate is superseded by infer_instantiate.
wenzelm@60802
  2683
INCOMPATIBILITY, need to re-adjust some ML names and types accordingly.
wenzelm@60802
  2684
wenzelm@60793
  2685
* Old tactic shorthands atac, rtac, etac, dtac, ftac have been
wenzelm@60793
  2686
discontinued. INCOMPATIBILITY, use regular assume_tac, resolve_tac etc.
wenzelm@60793
  2687
instead (with proper context).
wenzelm@60642
  2688
wenzelm@60642
  2689
* Thm.instantiate (and derivatives) no longer require the LHS of the
wenzelm@60642
  2690
instantiation to be certified: plain variables are given directly.
wenzelm@60642
  2691
wenzelm@60707
  2692
* Subgoal.SUBPROOF and Subgoal.FOCUS combinators use anonymous
wenzelm@60707
  2693
quasi-bound variables (like the Simplifier), instead of accidentally
wenzelm@60707
  2694
named local fixes. This has the potential to improve stability of proof
wenzelm@60707
  2695
tools, but can also cause INCOMPATIBILITY for tools that don't observe
wenzelm@60707
  2696
the proof context discipline.
wenzelm@60707
  2697
wenzelm@62017
  2698
* Isar proof methods are based on a slightly more general type
wenzelm@62017
  2699
context_tactic, which allows to change the proof context dynamically
wenzelm@62017
  2700
(e.g. to update cases) and indicate explicit Seq.Error results. Former
wenzelm@62017
  2701
METHOD_CASES is superseded by CONTEXT_METHOD; further combinators are
wenzelm@62017
  2702
provided in src/Pure/Isar/method.ML for convenience. INCOMPATIBILITY.
wenzelm@61885
  2703
wenzelm@60642
  2704
wenzelm@60983
  2705
*** System ***
wenzelm@60983
  2706
wenzelm@62525
  2707
* Command-line tool "isabelle console" enables print mode "ASCII".
wenzelm@61958
  2708
wenzelm@62017
  2709
* Command-line tool "isabelle update_then" expands old Isar command
wenzelm@62017
  2710
conflations:
wenzelm@62017
  2711
wenzelm@62017
  2712
    hence  ~>  then have
wenzelm@62017
  2713
    thus   ~>  then show
wenzelm@62017
  2714
wenzelm@62017
  2715
This syntax is more orthogonal and improves readability and
wenzelm@62017
  2716
maintainability of proofs.
wenzelm@62017
  2717
wenzelm@61602
  2718
* Global session timeout is multiplied by timeout_scale factor. This
wenzelm@61602
  2719
allows to adjust large-scale tests (e.g. AFP) to overall hardware
wenzelm@61602
  2720
performance.
wenzelm@61602
  2721
wenzelm@61174
  2722
* Property values in etc/symbols may contain spaces, if written with the
wenzelm@62671
  2723
replacement character "␣" (Unicode point 0x2324). For example:
wenzelm@62671
  2724
wenzelm@62671
  2725
    \<star>  code: 0x0022c6  group: operator  font: Deja␣Vu␣Sans␣Mono
wenzelm@61174
  2726
wenzelm@60995
  2727
* Java runtime environment for x86_64-windows allows to use larger heap
wenzelm@60995
  2728
space.
wenzelm@60995
  2729
wenzelm@61135
  2730
* Java runtime options are determined separately for 32bit vs. 64bit
wenzelm@61135
  2731
platforms as follows.
wenzelm@61135
  2732
wenzelm@61135
  2733
  - Isabelle desktop application: platform-specific files that are
wenzelm@61135
  2734
    associated with the main app bundle
wenzelm@61135
  2735
wenzelm@61135
  2736
  - isabelle jedit: settings
wenzelm@61135
  2737
    JEDIT_JAVA_SYSTEM_OPTIONS
wenzelm@61135
  2738
    JEDIT_JAVA_OPTIONS32 vs. JEDIT_JAVA_OPTIONS64
wenzelm@61135
  2739
wenzelm@61135
  2740
  - isabelle build: settings
wenzelm@61135
  2741
    ISABELLE_BUILD_JAVA_OPTIONS32 vs. ISABELLE_BUILD_JAVA_OPTIONS64
wenzelm@61135