NEWS
author haftmann
Wed Sep 07 23:38:52 2011 +0200 (2011-09-07)
changeset 44818 27ba81ad0890
parent 44800 0472f2367efb
child 44820 7798deb6f8fa
permissions -rw-r--r--
theory of saturated naturals contributed by Peter Gammie
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Isabelle NEWS -- history user-relevant changes
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==============================================
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New in this Isabelle version
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----------------------------
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*** General ***
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* Improved Isabelle/jEdit Prover IDE (PIDE), which can be invoked as
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"isabelle jedit" on the command line.
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  - Management of multiple theory files directly from the editor
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    buffer store -- bypassing the file-system (no requirement to save
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    files for checking).
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  - Markup of formal entities within the text buffer, with semantic
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    highlighting, tooltips and hyperlinks to jump to defining source
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    positions.
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  - Improved text rendering, with sub/superscripts in the source
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    buffer (including support for copy/paste wrt. output panel, HTML
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    theory output and other non-Isabelle text boxes).
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  - Refined scheduling of proof checking and printing of results,
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    based on interactive editor view.  (Note: jEdit folding and
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    narrowing allows to restrict buffer perspectives explicitly.)
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  - Reduced CPU performance requirements, usable on machines with few
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    cores.
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  - Reduced memory requirements due to pruning of unused document
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    versions (garbage collection).
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See also ~~/src/Tools/jEdit/README.html for further information,
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including some remaining limitations.
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* Theory loader: source files are exclusively located via the master
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directory of each theory node (where the .thy file itself resides).
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The global load path (such as src/HOL/Library) has been discontinued.
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Note that the path element ~~ may be used to reference theories in the
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Isabelle home folder -- for instance, "~~/src/HOL/Library/FuncSet".
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INCOMPATIBILITY.
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* Theory loader: source files are identified by content via SHA1
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digests.  Discontinued former path/modtime identification and optional
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ISABELLE_FILE_IDENT plugin scripts.
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* Parallelization of nested Isar proofs is subject to
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Goal.parallel_proofs_threshold (default 100).  See also isabelle
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usedir option -Q.
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* Discontinued support for Poly/ML 5.2, which was the last version
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without proper multithreading and TimeLimit implementation.
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* Discontinued old lib/scripts/polyml-platform, which has been
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obsolete since Isabelle2009-2.
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* Various optional external tools are referenced more robustly and
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uniformly by explicit Isabelle settings as follows:
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  ISABELLE_CSDP   (formerly CSDP_EXE)
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  ISABELLE_GHC    (formerly EXEC_GHC or GHC_PATH)
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  ISABELLE_OCAML  (formerly EXEC_OCAML)
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  ISABELLE_SWIPL  (formerly EXEC_SWIPL)
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  ISABELLE_YAP    (formerly EXEC_YAP)
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Note that automated detection from the file-system or search path has
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been discontinued.  INCOMPATIBILITY.
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* Name space: former unsynchronized references are now proper
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configuration options, with more conventional names:
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  long_names   ~> names_long
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  short_names  ~> names_short
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  unique_names ~> names_unique
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Minor INCOMPATIBILITY, need to declare options in context like this:
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  declare [[names_unique = false]]
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* Literal facts `prop` may contain dummy patterns, e.g. `_ = _`.  Note
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that the result needs to be unique, which means fact specifications
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may have to be refined after enriching a proof context.
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* Attribute "case_names" has been refined: the assumptions in each case
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can be named now by following the case name with [name1 name2 ...].
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* Isabelle/Isar reference manual provides more formal references in
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syntax diagrams.
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*** HOL ***
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* Theory Library/Saturated provides type of numbers with saturated
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arithmetic.
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* Classes bot and top require underlying partial order rather than
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preorder: uniqueness of bot and top is guaranteed.  INCOMPATIBILITY.
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* Class complete_lattice: generalized a couple of lemmas from sets;
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generalized theorems INF_cong and SUP_cong.  New type classes for
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complete boolean algebras and complete linear orders.  Lemmas
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Inf_less_iff, less_Sup_iff, INF_less_iff, less_SUP_iff now reside in
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class complete_linorder.
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Changed proposition of lemmas Inf_bool_def, Sup_bool_def, Inf_fun_def,
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Sup_fun_def, Inf_apply, Sup_apply.
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Redundant lemmas Inf_singleton, Sup_singleton, Inf_binary, Sup_binary,
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INF_eq, SUP_eq, INF_UNIV_range, SUP_UNIV_range, Int_eq_Inter,
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INTER_eq_Inter_image, Inter_def, INT_eq, Un_eq_Union,
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UNION_eq_Union_image, Union_def, UN_singleton, UN_eq have been
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discarded.
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More consistent and comprehensive names:
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  INFI_def ~> INF_def
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  SUPR_def ~> SUP_def
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  INF_leI ~> INF_lower
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  INF_leI2 ~> INF_lower2
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  le_INFI ~> INF_greatest
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  le_SUPI ~> SUP_upper
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  le_SUPI2 ~> SUP_upper2
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  SUP_leI ~> SUP_least
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  INFI_bool_eq ~> INF_bool_eq
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  SUPR_bool_eq ~> SUP_bool_eq
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  INFI_apply ~> INF_apply
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  SUPR_apply ~> SUP_apply
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  INTER_def ~> INTER_eq
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  UNION_def ~> UNION_eq
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INCOMPATIBILITY.
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* Theorem collections ball_simps and bex_simps do not contain theorems
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referring to UNION any longer; these have been moved to collection
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UN_ball_bex_simps.  INCOMPATIBILITY.
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* Theory Archimedean_Field: floor now is defined as parameter of a
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separate type class floor_ceiling.
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* Theory Finite_Set: more coherent development of fold_set locales:
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    locale fun_left_comm ~> locale comp_fun_commute
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    locale fun_left_comm_idem ~> locale comp_fun_idem
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Both use point-free characterization; interpretation proofs may need
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adjustment.  INCOMPATIBILITY.
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* Code generation:
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  - Theory Library/Code_Char_ord provides native ordering of
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    characters in the target language.
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  - Commands code_module and code_library are legacy, use export_code instead.
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  - Method "evaluation" is legacy, use method "eval" instead.
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  - Legacy evaluator "SML" is deactivated by default.  May be
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    reactivated by the following theory command:
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      setup {* Value.add_evaluator ("SML", Codegen.eval_term) *}
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* Declare ext [intro] by default.  Rare INCOMPATIBILITY.
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* Nitpick:
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  - Added "need" and "total_consts" options.
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  - Reintroduced "show_skolems" option by popular demand.
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  - Renamed attribute: nitpick_def ~> nitpick_unfold.
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    INCOMPATIBILITY.
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* Sledgehammer:
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  - sledgehammer available_provers ~> sledgehammer supported_provers.
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    INCOMPATIBILITY.
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  - Added support for SNARK and ToFoF-E on SystemOnTPTP and for simply typed
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    TPTP problems (TFF).
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  - Added "preplay_timeout", "slicing", "type_enc", "sound", "max_mono_iters",
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    and "max_new_mono_instances" options.
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  - Removed "explicit_apply" and "full_types" options as well as "Full Types"
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    Proof General menu item. INCOMPATIBILITY.
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* Metis:
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  - Removed "metisF" -- use "metis" instead. INCOMPATIBILITY.
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  - Obsoleted "metisFT" -- use "metis (full_types)" instead. INCOMPATIBILITY.
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* Command 'try':
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  - Renamed 'try_methods' and added "simp:", "intro:", "dest:", and
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    "elim:" options. INCOMPATIBILITY.
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  - Introduced 'tryƄ that not only runs 'try_methods' but also
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    'solve_direct', 'sledgehammer', 'quickcheck', and 'nitpick'.
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* Quickcheck:
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  - Added "eval" option to evaluate terms for the found counterexample
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    (currently only supported by the default (exhaustive) tester).
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  - Added post-processing of terms to obtain readable counterexamples
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    (currently only supported by the default (exhaustive) tester).
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  - New counterexample generator quickcheck[narrowing] enables
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    narrowing-based testing.  Requires the Glasgow Haskell compiler
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    with its installation location defined in the Isabelle settings
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    environment as ISABELLE_GHC.
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  - Removed quickcheck tester "SML" based on the SML code generator
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    (formly in HOL/Library).
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* Function package: discontinued option "tailrec".
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INCOMPATIBILITY. Use 'partial_function' instead.
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* Session HOL-Probability:
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  - Caratheodory's extension lemma is now proved for ring_of_sets.
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  - Infinite products of probability measures are now available.
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  - Use extended reals instead of positive extended
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    reals. INCOMPATIBILITY.
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* Old 'recdef' package has been moved to theory Library/Old_Recdef,
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from where it must be imported explicitly.  INCOMPATIBILITY.
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* Well-founded recursion combinator "wfrec" has been moved to theory
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Library/Wfrec. INCOMPATIBILITY.
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* Theory Library/Nat_Infinity has been renamed to
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Library/Extended_Nat, with name changes of the following types and
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constants:
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  type inat   ~> type enat
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  Fin         ~> enat
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  Infty       ~> infinity (overloaded)
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  iSuc        ~> eSuc
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  the_Fin     ~> the_enat
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Every theorem name containing "inat", "Fin", "Infty", or "iSuc" has
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been renamed accordingly.
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* Theory Limits: Type "'a net" has been renamed to "'a filter", in
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accordance with standard mathematical terminology. INCOMPATIBILITY.
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* Session Multivariate_Analysis: Type "('a, 'b) cart" has been renamed
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to "('a, 'b) vec" (the syntax "'a ^ 'b" remains unaffected). Constants
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"Cart_nth" and "Cart_lambda" have been respectively renamed to
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"vec_nth" and "vec_lambda"; theorems mentioning those names have
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changed to match. Definition theorems for overloaded constants now use
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the standard "foo_vec_def" naming scheme. A few other theorems have
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been renamed as follows (INCOMPATIBILITY):
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  Cart_eq          ~> vec_eq_iff
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  dist_nth_le_cart ~> dist_vec_nth_le
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  tendsto_vector   ~> vec_tendstoI
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  Cauchy_vector    ~> vec_CauchyI
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* Session Multivariate_Analysis: Several duplicate theorems have been
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removed, and other theorems have been renamed or replaced with more
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general versions. INCOMPATIBILITY.
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  finite_choice ~> finite_set_choice
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  eventually_conjI ~> eventually_conj
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  eventually_and ~> eventually_conj_iff
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  eventually_false ~> eventually_False
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  setsum_norm ~> norm_setsum
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  Lim_ident_at ~> LIM_ident
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  Lim_const ~> tendsto_const
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  Lim_cmul ~> tendsto_scaleR [OF tendsto_const]
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  Lim_neg ~> tendsto_minus
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  Lim_add ~> tendsto_add
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  Lim_sub ~> tendsto_diff
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  Lim_mul ~> tendsto_scaleR
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  Lim_vmul ~> tendsto_scaleR [OF _ tendsto_const]
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  Lim_null_norm ~> tendsto_norm_zero_iff [symmetric]
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  Lim_linear ~> bounded_linear.tendsto
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  Lim_component ~> tendsto_euclidean_component
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  Lim_component_cart ~> tendsto_vec_nth
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  Lim_inner ~> tendsto_inner [OF tendsto_const]
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  dot_lsum ~> inner_setsum_left
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  dot_rsum ~> inner_setsum_right
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  continuous_cmul ~> continuous_scaleR [OF continuous_const]
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  continuous_neg ~> continuous_minus
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  continuous_sub ~> continuous_diff
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  continuous_vmul ~> continuous_scaleR [OF _ continuous_const]
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  continuous_mul ~> continuous_scaleR
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  continuous_inv ~> continuous_inverse
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  continuous_at_within_inv ~> continuous_at_within_inverse
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  continuous_at_inv ~> continuous_at_inverse
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  continuous_at_norm ~> continuous_norm [OF continuous_at_id]
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  continuous_at_infnorm ~> continuous_infnorm [OF continuous_at_id]
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  continuous_at_component ~> continuous_component [OF continuous_at_id]
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  continuous_on_neg ~> continuous_on_minus
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  continuous_on_sub ~> continuous_on_diff
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  continuous_on_cmul ~> continuous_on_scaleR [OF continuous_on_const]
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  continuous_on_vmul ~> continuous_on_scaleR [OF _ continuous_on_const]
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  continuous_on_mul ~> continuous_on_scaleR
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  continuous_on_mul_real ~> continuous_on_mult
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  continuous_on_inner ~> continuous_on_inner [OF continuous_on_const]
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  continuous_on_norm ~> continuous_on_norm [OF continuous_on_id]
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  continuous_on_inverse ~> continuous_on_inv
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  uniformly_continuous_on_neg ~> uniformly_continuous_on_minus
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  uniformly_continuous_on_sub ~> uniformly_continuous_on_diff
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  subset_interior ~> interior_mono
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  subset_closure ~> closure_mono
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  closure_univ ~> closure_UNIV
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  real_arch_lt ~> reals_Archimedean2
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  real_arch ~> reals_Archimedean3
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  real_abs_norm ~> abs_norm_cancel
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  real_abs_sub_norm ~> norm_triangle_ineq3
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  norm_cauchy_schwarz_abs ~> Cauchy_Schwarz_ineq2
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* Theory Complex_Main: The locale interpretations for the
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bounded_linear and bounded_bilinear locales have been removed, in
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order to reduce the number of duplicate lemmas. Users must use the
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original names for distributivity theorems, potential INCOMPATIBILITY.
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  divide.add ~> add_divide_distrib
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  divide.diff ~> diff_divide_distrib
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  divide.setsum ~> setsum_divide_distrib
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  mult.add_right ~> right_distrib
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  mult.diff_right ~> right_diff_distrib
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  mult_right.setsum ~> setsum_right_distrib
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  mult_left.diff ~> left_diff_distrib
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* Theory Complex_Main: Several redundant theorems have been removed or
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replaced by more general versions. INCOMPATIBILITY.
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  real_0_le_divide_iff ~> zero_le_divide_iff
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  realpow_two_disj ~> power2_eq_iff
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  real_squared_diff_one_factored ~> square_diff_one_factored
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  realpow_two_diff ~> square_diff_square_factored
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  reals_complete2 ~> complete_real
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  real_sum_squared_expand ~> power2_sum
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  exp_ln_eq ~> ln_unique
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  expi_add ~> exp_add
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  expi_zero ~> exp_zero
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  lemma_DERIV_subst ~> DERIV_cong
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  LIMSEQ_Zfun_iff ~> tendsto_Zfun_iff
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  LIMSEQ_const ~> tendsto_const
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  LIMSEQ_norm ~> tendsto_norm
huffman@44568
   335
  LIMSEQ_add ~> tendsto_add
huffman@44568
   336
  LIMSEQ_minus ~> tendsto_minus
huffman@44568
   337
  LIMSEQ_minus_cancel ~> tendsto_minus_cancel
huffman@44568
   338
  LIMSEQ_diff ~> tendsto_diff
huffman@44568
   339
  bounded_linear.LIMSEQ ~> bounded_linear.tendsto
huffman@44568
   340
  bounded_bilinear.LIMSEQ ~> bounded_bilinear.tendsto
huffman@44568
   341
  LIMSEQ_mult ~> tendsto_mult
huffman@44568
   342
  LIMSEQ_inverse ~> tendsto_inverse
huffman@44568
   343
  LIMSEQ_divide ~> tendsto_divide
huffman@44568
   344
  LIMSEQ_pow ~> tendsto_power
huffman@44568
   345
  LIMSEQ_setsum ~> tendsto_setsum
huffman@44568
   346
  LIMSEQ_setprod ~> tendsto_setprod
huffman@44568
   347
  LIMSEQ_norm_zero ~> tendsto_norm_zero_iff
huffman@44568
   348
  LIMSEQ_rabs_zero ~> tendsto_rabs_zero_iff
huffman@44568
   349
  LIMSEQ_imp_rabs ~> tendsto_rabs
huffman@44710
   350
  LIMSEQ_add_minus ~> tendsto_add [OF _ tendsto_minus]
huffman@44710
   351
  LIMSEQ_add_const ~> tendsto_add [OF _ tendsto_const]
huffman@44710
   352
  LIMSEQ_diff_const ~> tendsto_diff [OF _ tendsto_const]
huffman@44748
   353
  LIMSEQ_Complex ~> tendsto_Complex
huffman@44568
   354
  LIM_ident ~> tendsto_ident_at
huffman@44568
   355
  LIM_const ~> tendsto_const
huffman@44568
   356
  LIM_add ~> tendsto_add
huffman@44568
   357
  LIM_add_zero ~> tendsto_add_zero
huffman@44568
   358
  LIM_minus ~> tendsto_minus
huffman@44568
   359
  LIM_diff ~> tendsto_diff
huffman@44568
   360
  LIM_norm ~> tendsto_norm
huffman@44568
   361
  LIM_norm_zero ~> tendsto_norm_zero
huffman@44568
   362
  LIM_norm_zero_cancel ~> tendsto_norm_zero_cancel
huffman@44568
   363
  LIM_norm_zero_iff ~> tendsto_norm_zero_iff
huffman@44568
   364
  LIM_rabs ~> tendsto_rabs
huffman@44568
   365
  LIM_rabs_zero ~> tendsto_rabs_zero
huffman@44568
   366
  LIM_rabs_zero_cancel ~> tendsto_rabs_zero_cancel
huffman@44568
   367
  LIM_rabs_zero_iff ~> tendsto_rabs_zero_iff
huffman@44568
   368
  LIM_compose ~> tendsto_compose
huffman@44568
   369
  LIM_mult ~> tendsto_mult
huffman@44568
   370
  LIM_scaleR ~> tendsto_scaleR
huffman@44568
   371
  LIM_of_real ~> tendsto_of_real
huffman@44568
   372
  LIM_power ~> tendsto_power
huffman@44568
   373
  LIM_inverse ~> tendsto_inverse
huffman@44568
   374
  LIM_sgn ~> tendsto_sgn
huffman@44568
   375
  isCont_LIM_compose ~> isCont_tendsto_compose
huffman@44568
   376
  bounded_linear.LIM ~> bounded_linear.tendsto
huffman@44568
   377
  bounded_linear.LIM_zero ~> bounded_linear.tendsto_zero
huffman@44568
   378
  bounded_bilinear.LIM ~> bounded_bilinear.tendsto
huffman@44568
   379
  bounded_bilinear.LIM_prod_zero ~> bounded_bilinear.tendsto_zero
huffman@44568
   380
  bounded_bilinear.LIM_left_zero ~> bounded_bilinear.tendsto_left_zero
huffman@44568
   381
  bounded_bilinear.LIM_right_zero ~> bounded_bilinear.tendsto_right_zero
huffman@44568
   382
  LIM_inverse_fun ~> tendsto_inverse [OF tendsto_ident_at]
huffman@44522
   383
wenzelm@42484
   384
krauss@41685
   385
*** Document preparation ***
krauss@41685
   386
wenzelm@42514
   387
* Localized \isabellestyle switch can be used within blocks or groups
wenzelm@42514
   388
like this:
wenzelm@42514
   389
wenzelm@42514
   390
  \isabellestyle{it}  %preferred default
wenzelm@42514
   391
  {\isabellestylett @{text "typewriter stuff"}}
wenzelm@42514
   392
wenzelm@44800
   393
* Antiquotation @{rail} layouts railroad syntax diagrams, see also
wenzelm@44800
   394
isar-ref manual, both for description and actual application of the
wenzelm@44800
   395
same.
wenzelm@44800
   396
wenzelm@44800
   397
* Antiquotation @{value} evaluates the given term and presents its
wenzelm@44800
   398
result.
wenzelm@44800
   399
wenzelm@44800
   400
* Antiquotations: term style "isub" provides ad-hoc conversion of
wenzelm@44800
   401
variables x1, y23 into subscripted form x\<^isub>1,
wenzelm@44800
   402
y\<^isub>2\<^isub>3.
wenzelm@41651
   403
wenzelm@42484
   404
* Predefined LaTeX macros for Isabelle symbols \<bind> and \<then>
wenzelm@42484
   405
(e.g. see ~~/src/HOL/Library/Monad_Syntax.thy).
wenzelm@42484
   406
wenzelm@44800
   407
* Discontinued special treatment of hard tabulators, which are better
wenzelm@44800
   408
avoided in the first place (no universally agreed standard expansion).
wenzelm@44800
   409
Implicit tab-width is now 1.
wenzelm@44800
   410
wenzelm@41651
   411
wenzelm@41944
   412
*** ML ***
wenzelm@41944
   413
wenzelm@43731
   414
* The inner syntax of sort/type/term/prop supports inlined YXML
wenzelm@43731
   415
representations within quoted string tokens.  By encoding logical
wenzelm@43731
   416
entities via Term_XML (in ML or Scala) concrete syntax can be
wenzelm@43731
   417
bypassed, which is particularly useful for producing bits of text
wenzelm@43731
   418
under external program control.
wenzelm@43731
   419
wenzelm@43565
   420
* Antiquotations for ML and document preparation are managed as theory
wenzelm@43565
   421
data, which requires explicit setup.
wenzelm@43565
   422
wenzelm@42897
   423
* Isabelle_Process.is_active allows tools to check if the official
wenzelm@42897
   424
process wrapper is running (Isabelle/Scala/jEdit) or the old TTY loop
wenzelm@42897
   425
(better known as Proof General).
wenzelm@42897
   426
wenzelm@42360
   427
* Structure Proof_Context follows standard naming scheme.  Old
wenzelm@42360
   428
ProofContext is still available for some time as legacy alias.
wenzelm@42360
   429
wenzelm@42015
   430
* Structure Timing provides various operations for timing; supersedes
wenzelm@42015
   431
former start_timing/end_timing etc.
wenzelm@42015
   432
wenzelm@41944
   433
* Path.print is the official way to show file-system paths to users
wenzelm@41944
   434
(including quotes etc.).
wenzelm@41944
   435
wenzelm@42056
   436
* Inner syntax: identifiers in parse trees of generic categories
wenzelm@42056
   437
"logic", "aprop", "idt" etc. carry position information (disguised as
wenzelm@42056
   438
type constraints).  Occasional INCOMPATIBILITY with non-compliant
wenzelm@42057
   439
translations that choke on unexpected type constraints.  Positions can
wenzelm@42057
   440
be stripped in ML translations via Syntax.strip_positions /
wenzelm@42057
   441
Syntax.strip_positions_ast, or via the syntax constant
wenzelm@42057
   442
"_strip_positions" within parse trees.  As last resort, positions can
wenzelm@42057
   443
be disabled via the configuration option Syntax.positions, which is
wenzelm@42057
   444
called "syntax_positions" in Isar attribute syntax.
wenzelm@42056
   445
wenzelm@42290
   446
* Discontinued special status of various ML structures that contribute
wenzelm@42290
   447
to structure Syntax (Ast, Lexicon, Mixfix, Parser, Printer etc.): less
wenzelm@42290
   448
pervasive content, no inclusion in structure Syntax.  INCOMPATIBILITY,
wenzelm@42290
   449
refer directly to Ast.Constant, Lexicon.is_identifier,
wenzelm@42290
   450
Syntax_Trans.mk_binder_tr etc.
wenzelm@42224
   451
wenzelm@42247
   452
* Typed print translation: discontinued show_sorts argument, which is
wenzelm@42247
   453
already available via context of "advanced" translation.
wenzelm@42247
   454
wenzelm@42370
   455
* Refined PARALLEL_GOALS tactical: degrades gracefully for schematic
wenzelm@42370
   456
goal states; body tactic needs to address all subgoals uniformly.
wenzelm@42370
   457
wenzelm@42403
   458
* Slightly more special eq_list/eq_set, with shortcut involving
wenzelm@42403
   459
pointer equality (assumes that eq relation is reflexive).
wenzelm@42403
   460
wenzelm@42793
   461
* Classical tactics use proper Proof.context instead of historic types
wenzelm@42793
   462
claset/clasimpset.  Old-style declarations like addIs, addEs, addDs
wenzelm@42793
   463
operate directly on Proof.context.  Raw type claset retains its use as
wenzelm@42793
   464
snapshot of the classical context, which can be recovered via
wenzelm@42793
   465
(put_claset HOL_cs) etc.  Type clasimpset has been discontinued.
wenzelm@42793
   466
INCOMPATIBILITY, classical tactics and derived proof methods require
wenzelm@42793
   467
proper Proof.context.
wenzelm@42793
   468
wenzelm@43752
   469
* Scala layer provides JVM method invocation service for static
wenzelm@44800
   470
methods of type (String)String, see Invoke_Scala.method in ML.  For
wenzelm@44800
   471
example:
wenzelm@43752
   472
wenzelm@43752
   473
  Invoke_Scala.method "java.lang.System.getProperty" "java.home"
wenzelm@43752
   474
wenzelm@44800
   475
Togeter with YXML.string_of_body/parse_body and XML.Encode/Decode this
wenzelm@44800
   476
allows to pass structured values between ML and Scala.
wenzelm@44800
   477
wenzelm@41944
   478
wenzelm@41703
   479
wenzelm@41512
   480
New in Isabelle2011 (January 2011)
wenzelm@41512
   481
----------------------------------
wenzelm@37383
   482
wenzelm@37536
   483
*** General ***
wenzelm@37536
   484
wenzelm@41573
   485
* Experimental Prover IDE based on Isabelle/Scala and jEdit (see
wenzelm@41612
   486
src/Tools/jEdit).  This also serves as IDE for Isabelle/ML, with
wenzelm@41612
   487
useful tooltips and hyperlinks produced from its static analysis.  The
wenzelm@41612
   488
bundled component provides an executable Isabelle tool that can be run
wenzelm@41612
   489
like this:
wenzelm@41612
   490
wenzelm@41612
   491
  Isabelle2011/bin/isabelle jedit
wenzelm@41573
   492
wenzelm@40948
   493
* Significantly improved Isabelle/Isar implementation manual.
wenzelm@40948
   494
wenzelm@41594
   495
* System settings: ISABELLE_HOME_USER now includes ISABELLE_IDENTIFIER
wenzelm@41595
   496
(and thus refers to something like $HOME/.isabelle/Isabelle2011),
wenzelm@41594
   497
while the default heap location within that directory lacks that extra
wenzelm@41594
   498
suffix.  This isolates multiple Isabelle installations from each
wenzelm@41594
   499
other, avoiding problems with old settings in new versions.
wenzelm@41594
   500
INCOMPATIBILITY, need to copy/upgrade old user settings manually.
wenzelm@41594
   501
wenzelm@40947
   502
* Source files are always encoded as UTF-8, instead of old-fashioned
wenzelm@40947
   503
ISO-Latin-1.  INCOMPATIBILITY.  Isabelle LaTeX documents might require
wenzelm@40948
   504
the following package declarations:
wenzelm@40947
   505
wenzelm@40947
   506
  \usepackage[utf8]{inputenc}
wenzelm@40947
   507
  \usepackage{textcomp}
wenzelm@40947
   508
krauss@41440
   509
* Explicit treatment of UTF-8 sequences as Isabelle symbols, such that
wenzelm@37536
   510
a Unicode character is treated as a single symbol, not a sequence of
wenzelm@37536
   511
non-ASCII bytes as before.  Since Isabelle/ML string literals may
wenzelm@37536
   512
contain symbols without further backslash escapes, Unicode can now be
wenzelm@37536
   513
used here as well.  Recall that Symbol.explode in ML provides a
wenzelm@37536
   514
consistent view on symbols, while raw explode (or String.explode)
wenzelm@37536
   515
merely give a byte-oriented representation.
wenzelm@37536
   516
wenzelm@41594
   517
* Theory loader: source files are primarily located via the master
wenzelm@41594
   518
directory of each theory node (where the .thy file itself resides).
wenzelm@41594
   519
The global load path is still partially available as legacy feature.
wenzelm@41594
   520
Minor INCOMPATIBILITY due to subtle change in file lookup: use
wenzelm@41594
   521
explicit paths, relatively to the theory.
wenzelm@38135
   522
wenzelm@37939
   523
* Special treatment of ML file names has been discontinued.
wenzelm@37939
   524
Historically, optional extensions .ML or .sml were added on demand --
wenzelm@37939
   525
at the cost of clarity of file dependencies.  Recall that Isabelle/ML
wenzelm@37939
   526
files exclusively use the .ML extension.  Minor INCOMPATIBILTY.
wenzelm@37939
   527
wenzelm@38980
   528
* Various options that affect pretty printing etc. are now properly
wenzelm@38767
   529
handled within the context via configuration options, instead of
wenzelm@40879
   530
unsynchronized references or print modes.  There are both ML Config.T
wenzelm@40879
   531
entities and Isar declaration attributes to access these.
wenzelm@38767
   532
wenzelm@39125
   533
  ML (Config.T)                 Isar (attribute)
wenzelm@39125
   534
wenzelm@39128
   535
  eta_contract                  eta_contract
wenzelm@39137
   536
  show_brackets                 show_brackets
wenzelm@39134
   537
  show_sorts                    show_sorts
wenzelm@39134
   538
  show_types                    show_types
wenzelm@39126
   539
  show_question_marks           show_question_marks
wenzelm@39126
   540
  show_consts                   show_consts
wenzelm@40879
   541
  show_abbrevs                  show_abbrevs
wenzelm@39126
   542
wenzelm@41379
   543
  Syntax.ast_trace              syntax_ast_trace
wenzelm@41379
   544
  Syntax.ast_stat               syntax_ast_stat
wenzelm@39126
   545
  Syntax.ambiguity_level        syntax_ambiguity_level
wenzelm@39126
   546
wenzelm@39126
   547
  Goal_Display.goals_limit      goals_limit
wenzelm@39126
   548
  Goal_Display.show_main_goal   show_main_goal
wenzelm@39126
   549
wenzelm@41379
   550
  Method.rule_trace             rule_trace
wenzelm@41379
   551
wenzelm@39125
   552
  Thy_Output.display            thy_output_display
wenzelm@39125
   553
  Thy_Output.quotes             thy_output_quotes
wenzelm@39125
   554
  Thy_Output.indent             thy_output_indent
wenzelm@39125
   555
  Thy_Output.source             thy_output_source
wenzelm@39125
   556
  Thy_Output.break              thy_output_break
wenzelm@39125
   557
krauss@41440
   558
Note that corresponding "..._default" references in ML may only be
wenzelm@38767
   559
changed globally at the ROOT session setup, but *not* within a theory.
wenzelm@40879
   560
The option "show_abbrevs" supersedes the former print mode
wenzelm@40879
   561
"no_abbrevs" with inverted meaning.
wenzelm@38767
   562
wenzelm@40878
   563
* More systematic naming of some configuration options.
huffman@41294
   564
INCOMPATIBILITY.
wenzelm@40878
   565
wenzelm@40878
   566
  trace_simp  ~>  simp_trace
wenzelm@40878
   567
  debug_simp  ~>  simp_debug
wenzelm@40878
   568
wenzelm@40291
   569
* Support for real valued configuration options, using simplistic
wenzelm@40291
   570
floating-point notation that coincides with the inner syntax for
wenzelm@40291
   571
float_token.
wenzelm@40291
   572
wenzelm@41594
   573
* Support for real valued preferences (with approximative PGIP type):
wenzelm@41594
   574
front-ends need to accept "pgint" values in float notation.
wenzelm@41594
   575
INCOMPATIBILITY.
wenzelm@41573
   576
wenzelm@41573
   577
* The IsabelleText font now includes Cyrillic, Hebrew, Arabic from
wenzelm@41573
   578
DejaVu Sans.
wenzelm@41573
   579
wenzelm@41594
   580
* Discontinued support for Poly/ML 5.0 and 5.1 versions.
wenzelm@41594
   581
wenzelm@40948
   582
wenzelm@40948
   583
*** Pure ***
wenzelm@40948
   584
wenzelm@41249
   585
* Command 'type_synonym' (with single argument) replaces somewhat
wenzelm@41249
   586
outdated 'types', which is still available as legacy feature for some
wenzelm@41249
   587
time.
wenzelm@41249
   588
wenzelm@41249
   589
* Command 'nonterminal' (with 'and' separated list of arguments)
wenzelm@41249
   590
replaces somewhat outdated 'nonterminals'.  INCOMPATIBILITY.
wenzelm@41229
   591
wenzelm@40965
   592
* Command 'notepad' replaces former 'example_proof' for
wenzelm@41020
   593
experimentation in Isar without any result.  INCOMPATIBILITY.
wenzelm@40965
   594
ballarin@41435
   595
* Locale interpretation commands 'interpret' and 'sublocale' accept
ballarin@41435
   596
lists of equations to map definitions in a locale to appropriate
ballarin@41435
   597
entities in the context of the interpretation.  The 'interpretation'
ballarin@41435
   598
command already provided this functionality.
ballarin@41435
   599
wenzelm@41594
   600
* Diagnostic command 'print_dependencies' prints the locale instances
wenzelm@41594
   601
that would be activated if the specified expression was interpreted in
wenzelm@41594
   602
the current context.  Variant "print_dependencies!" assumes a context
wenzelm@41594
   603
without interpretations.
ballarin@38110
   604
ballarin@38110
   605
* Diagnostic command 'print_interps' prints interpretations in proofs
ballarin@38110
   606
in addition to interpretations in theories.
ballarin@38110
   607
wenzelm@38708
   608
* Discontinued obsolete 'global' and 'local' commands to manipulate
wenzelm@38708
   609
the theory name space.  Rare INCOMPATIBILITY.  The ML functions
wenzelm@38708
   610
Sign.root_path and Sign.local_path may be applied directly where this
wenzelm@38708
   611
feature is still required for historical reasons.
wenzelm@38708
   612
wenzelm@40948
   613
* Discontinued obsolete 'constdefs' command.  INCOMPATIBILITY, use
haftmann@39215
   614
'definition' instead.
haftmann@39215
   615
wenzelm@41574
   616
* The "prems" fact, which refers to the accidental collection of
wenzelm@41574
   617
foundational premises in the context, is now explicitly marked as
wenzelm@41594
   618
legacy feature and will be discontinued soon.  Consider using "assms"
wenzelm@41594
   619
of the head statement or reference facts by explicit names.
wenzelm@41574
   620
wenzelm@40801
   621
* Document antiquotations @{class} and @{type} print classes and type
wenzelm@40801
   622
constructors.
wenzelm@40801
   623
wenzelm@40801
   624
* Document antiquotation @{file} checks file/directory entries within
wenzelm@40801
   625
the local file system.
haftmann@39305
   626
ballarin@38110
   627
haftmann@37387
   628
*** HOL ***
haftmann@37387
   629
wenzelm@41594
   630
* Coercive subtyping: functions can be declared as coercions and type
wenzelm@41594
   631
inference will add them as necessary upon input of a term.  Theory
wenzelm@41594
   632
Complex_Main declares real :: nat => real and real :: int => real as
wenzelm@41594
   633
coercions. A coercion function f is declared like this:
wenzelm@40939
   634
wenzelm@40939
   635
  declare [[coercion f]]
nipkow@40866
   636
wenzelm@41571
   637
To lift coercions through type constructors (e.g. from nat => real to
nipkow@40866
   638
nat list => real list), map functions can be declared, e.g.
nipkow@40866
   639
wenzelm@40939
   640
  declare [[coercion_map map]]
wenzelm@40939
   641
wenzelm@40939
   642
Currently coercion inference is activated only in theories including
wenzelm@40939
   643
real numbers, i.e. descendants of Complex_Main.  This is controlled by
wenzelm@41020
   644
the configuration option "coercion_enabled", e.g. it can be enabled in
wenzelm@40939
   645
other theories like this:
wenzelm@40939
   646
wenzelm@40939
   647
  declare [[coercion_enabled]]
nipkow@40866
   648
wenzelm@41571
   649
* Command 'partial_function' provides basic support for recursive
wenzelm@41571
   650
function definitions over complete partial orders.  Concrete instances
krauss@40183
   651
are provided for i) the option type, ii) tail recursion on arbitrary
wenzelm@41571
   652
types, and iii) the heap monad of Imperative_HOL.  See
wenzelm@41571
   653
src/HOL/ex/Fundefs.thy and src/HOL/Imperative_HOL/ex/Linked_Lists.thy
wenzelm@41571
   654
for examples.
krauss@40183
   655
wenzelm@41571
   656
* Function package: f.psimps rules are no longer implicitly declared
wenzelm@41571
   657
as [simp].  INCOMPATIBILITY.
haftmann@41398
   658
haftmann@41398
   659
* Datatype package: theorems generated for executable equality (class
wenzelm@41571
   660
"eq") carry proper names and are treated as default code equations.
wenzelm@41571
   661
wenzelm@41594
   662
* Inductive package: now offers command 'inductive_simps' to
wenzelm@41594
   663
automatically derive instantiated and simplified equations for
wenzelm@41594
   664
inductive predicates, similar to 'inductive_cases'.
wenzelm@41594
   665
wenzelm@41571
   666
* Command 'enriched_type' allows to register properties of the
wenzelm@41571
   667
functorial structure of types.
haftmann@39771
   668
haftmann@39644
   669
* Improved infrastructure for term evaluation using code generator
haftmann@39644
   670
techniques, in particular static evaluation conversions.
haftmann@39644
   671
wenzelm@41594
   672
* Code generator: Scala (2.8 or higher) has been added to the target
wenzelm@41594
   673
languages.
wenzelm@41594
   674
haftmann@41398
   675
* Code generator: globbing constant expressions "*" and "Theory.*"
haftmann@41398
   676
have been replaced by the more idiomatic "_" and "Theory._".
haftmann@41398
   677
INCOMPATIBILITY.
haftmann@41398
   678
haftmann@41398
   679
* Code generator: export_code without explicit file declaration prints
haftmann@41398
   680
to standard output.  INCOMPATIBILITY.
haftmann@41398
   681
haftmann@41398
   682
* Code generator: do not print function definitions for case
haftmann@41398
   683
combinators any longer.
haftmann@41398
   684
wenzelm@41594
   685
* Code generator: simplification with rules determined with
wenzelm@41571
   686
src/Tools/Code/code_simp.ML and method "code_simp".
wenzelm@41571
   687
wenzelm@41594
   688
* Code generator for records: more idiomatic representation of record
wenzelm@40948
   689
types.  Warning: records are not covered by ancient SML code
wenzelm@40948
   690
generation any longer.  INCOMPATIBILITY.  In cases of need, a suitable
wenzelm@40948
   691
rep_datatype declaration helps to succeed then:
haftmann@38537
   692
haftmann@38537
   693
  record 'a foo = ...
haftmann@38537
   694
  ...
haftmann@38537
   695
  rep_datatype foo_ext ...
haftmann@38535
   696
wenzelm@41594
   697
* Records: logical foundation type for records does not carry a
wenzelm@41594
   698
'_type' suffix any longer (obsolete due to authentic syntax).
wenzelm@41594
   699
INCOMPATIBILITY.
wenzelm@41594
   700
haftmann@41398
   701
* Quickcheck now by default uses exhaustive testing instead of random
wenzelm@41571
   702
testing.  Random testing can be invoked by "quickcheck [random]",
wenzelm@41571
   703
exhaustive testing by "quickcheck [exhaustive]".
haftmann@41398
   704
haftmann@41398
   705
* Quickcheck instantiates polymorphic types with small finite
haftmann@41398
   706
datatypes by default. This enables a simple execution mechanism to
haftmann@41398
   707
handle quantifiers and function equality over the finite datatypes.
haftmann@41398
   708
wenzelm@41571
   709
* Quickcheck random generator has been renamed from "code" to
wenzelm@41571
   710
"random".  INCOMPATIBILITY.
haftmann@41398
   711
haftmann@41398
   712
* Quickcheck now has a configurable time limit which is set to 30
haftmann@41398
   713
seconds by default. This can be changed by adding [timeout = n] to the
haftmann@41398
   714
quickcheck command. The time limit for Auto Quickcheck is still set
haftmann@41398
   715
independently.
haftmann@38461
   716
haftmann@38461
   717
* Quickcheck in locales considers interpretations of that locale for
haftmann@38461
   718
counter example search.
haftmann@38461
   719
blanchet@40059
   720
* Sledgehammer:
wenzelm@41571
   721
  - Added "smt" and "remote_smt" provers based on the "smt" proof
wenzelm@41571
   722
    method. See the Sledgehammer manual for details ("isabelle doc
wenzelm@41571
   723
    sledgehammer").
blanchet@40059
   724
  - Renamed commands:
blanchet@40059
   725
    sledgehammer atp_info ~> sledgehammer running_provers
blanchet@40059
   726
    sledgehammer atp_kill ~> sledgehammer kill_provers
blanchet@40059
   727
    sledgehammer available_atps ~> sledgehammer available_provers
blanchet@40059
   728
    INCOMPATIBILITY.
blanchet@40059
   729
  - Renamed options:
blanchet@40059
   730
    sledgehammer [atps = ...] ~> sledgehammer [provers = ...]
blanchet@40062
   731
    sledgehammer [atp = ...] ~> sledgehammer [prover = ...]
blanchet@40341
   732
    sledgehammer [timeout = 77 s] ~> sledgehammer [timeout = 77]
blanchet@40341
   733
    (and "ms" and "min" are no longer supported)
blanchet@40341
   734
    INCOMPATIBILITY.
blanchet@40341
   735
blanchet@40341
   736
* Nitpick:
blanchet@40341
   737
  - Renamed options:
blanchet@40341
   738
    nitpick [timeout = 77 s] ~> nitpick [timeout = 77]
blanchet@40341
   739
    nitpick [tac_timeout = 777 ms] ~> nitpick [tac_timeout = 0.777]
blanchet@40059
   740
    INCOMPATIBILITY.
blanchet@40725
   741
  - Added support for partial quotient types.
blanchet@40725
   742
  - Added local versions of the "Nitpick.register_xxx" functions.
blanchet@40725
   743
  - Added "whack" option.
blanchet@40725
   744
  - Allow registration of quotient types as codatatypes.
blanchet@40725
   745
  - Improved "merge_type_vars" option to merge more types.
blanchet@40725
   746
  - Removed unsound "fast_descrs" option.
blanchet@40725
   747
  - Added custom symmetry breaking for datatypes, making it possible to reach
blanchet@40725
   748
    higher cardinalities.
blanchet@40725
   749
  - Prevent the expansion of too large definitions.
blanchet@39957
   750
wenzelm@41571
   751
* Proof methods "metis" and "meson" now have configuration options
wenzelm@41571
   752
"meson_trace", "metis_trace", and "metis_verbose" that can be enabled
wenzelm@41571
   753
to diagnose these tools. E.g.
wenzelm@41571
   754
wenzelm@41571
   755
    using [[metis_trace = true]]
wenzelm@41571
   756
haftmann@41398
   757
* Auto Solve: Renamed "Auto Solve Direct".  The tool is now available
haftmann@41398
   758
manually as command 'solve_direct'.
haftmann@41398
   759
boehmes@41601
   760
* The default SMT solver Z3 must be enabled explicitly (due to
boehmes@41601
   761
licensing issues) by setting the environment variable
wenzelm@41603
   762
Z3_NON_COMMERCIAL in etc/settings of the component, for example.  For
wenzelm@41603
   763
commercial applications, the SMT solver CVC3 is provided as fall-back;
wenzelm@41603
   764
changing the SMT solver is done via the configuration option
wenzelm@41603
   765
"smt_solver".
boehmes@41432
   766
boehmes@41432
   767
* Remote SMT solvers need to be referred to by the "remote_" prefix,
wenzelm@41571
   768
i.e. "remote_cvc3" and "remote_z3".
wenzelm@41571
   769
wenzelm@41571
   770
* Added basic SMT support for datatypes, records, and typedefs using
wenzelm@41571
   771
the oracle mode (no proofs).  Direct support of pairs has been dropped
wenzelm@41571
   772
in exchange (pass theorems fst_conv snd_conv pair_collapse to the SMT
wenzelm@41571
   773
support for a similar behavior).  Minor INCOMPATIBILITY.
boehmes@41432
   774
boehmes@40162
   775
* Changed SMT configuration options:
boehmes@40162
   776
  - Renamed:
boehmes@41432
   777
    z3_proofs ~> smt_oracle (with inverted meaning)
boehmes@40162
   778
    z3_trace_assms ~> smt_trace_used_facts
boehmes@40162
   779
    INCOMPATIBILITY.
boehmes@40162
   780
  - Added:
boehmes@40424
   781
    smt_verbose
boehmes@41432
   782
    smt_random_seed
boehmes@40424
   783
    smt_datatypes
boehmes@41432
   784
    smt_infer_triggers
boehmes@41432
   785
    smt_monomorph_limit
boehmes@40162
   786
    cvc3_options
boehmes@41432
   787
    remote_cvc3_options
boehmes@41432
   788
    remote_z3_options
boehmes@40162
   789
    yices_options
blanchet@39957
   790
wenzelm@40948
   791
* Boogie output files (.b2i files) need to be declared in the theory
wenzelm@40948
   792
header.
boehmes@40580
   793
wenzelm@41594
   794
* Simplification procedure "list_to_set_comprehension" rewrites list
wenzelm@41594
   795
comprehensions applied to List.set to set comprehensions.  Occasional
wenzelm@41594
   796
INCOMPATIBILITY, may be deactivated like this:
wenzelm@41594
   797
wenzelm@41594
   798
  declare [[simproc del: list_to_set_comprehension]]
wenzelm@41594
   799
wenzelm@41573
   800
* Removed old version of primrec package.  INCOMPATIBILITY.
haftmann@41398
   801
haftmann@41398
   802
* Removed simplifier congruence rule of "prod_case", as has for long
haftmann@41398
   803
been the case with "split".  INCOMPATIBILITY.
haftmann@41398
   804
haftmann@41398
   805
* String.literal is a type, but not a datatype.  INCOMPATIBILITY.
haftmann@41398
   806
krauss@40388
   807
* Removed [split_format ... and ... and ...] version of
krauss@40388
   808
[split_format].  Potential INCOMPATIBILITY.
krauss@40388
   809
wenzelm@41571
   810
* Predicate "sorted" now defined inductively, with nice induction
wenzelm@41571
   811
rules.  INCOMPATIBILITY: former sorted.simps now named sorted_simps.
haftmann@41398
   812
haftmann@41398
   813
* Constant "contents" renamed to "the_elem", to free the generic name
haftmann@41398
   814
contents for other uses.  INCOMPATIBILITY.
haftmann@41398
   815
haftmann@41398
   816
* Renamed class eq and constant eq (for code generation) to class
haftmann@41398
   817
equal and constant equal, plus renaming of related facts and various
haftmann@41398
   818
tuning.  INCOMPATIBILITY.
haftmann@41398
   819
haftmann@41398
   820
* Dropped type classes mult_mono and mult_mono1.  INCOMPATIBILITY.
haftmann@41398
   821
wenzelm@41571
   822
* Removed output syntax "'a ~=> 'b" for "'a => 'b option".
wenzelm@41571
   823
INCOMPATIBILITY.
haftmann@41398
   824
haftmann@41398
   825
* Renamed theory Fset to Cset, type Fset.fset to Cset.set, in order to
haftmann@41398
   826
avoid confusion with finite sets.  INCOMPATIBILITY.
haftmann@41398
   827
haftmann@41398
   828
* Abandoned locales equiv, congruent and congruent2 for equivalence
haftmann@41398
   829
relations.  INCOMPATIBILITY: use equivI rather than equiv_intro (same
haftmann@41398
   830
for congruent(2)).
haftmann@41398
   831
haftmann@41398
   832
* Some previously unqualified names have been qualified:
haftmann@41398
   833
haftmann@41398
   834
  types
haftmann@41398
   835
    bool ~> HOL.bool
haftmann@41398
   836
    nat ~> Nat.nat
haftmann@41398
   837
haftmann@41398
   838
  constants
haftmann@41398
   839
    Trueprop ~> HOL.Trueprop
haftmann@41398
   840
    True ~> HOL.True
haftmann@41398
   841
    False ~> HOL.False
haftmann@41398
   842
    op & ~> HOL.conj
haftmann@41398
   843
    op | ~> HOL.disj
haftmann@41398
   844
    op --> ~> HOL.implies
haftmann@41398
   845
    op = ~> HOL.eq
haftmann@41398
   846
    Not ~> HOL.Not
haftmann@41398
   847
    The ~> HOL.The
haftmann@41398
   848
    All ~> HOL.All
haftmann@41398
   849
    Ex ~> HOL.Ex
haftmann@41398
   850
    Ex1 ~> HOL.Ex1
haftmann@41398
   851
    Let ~> HOL.Let
haftmann@41398
   852
    If ~> HOL.If
haftmann@41398
   853
    Ball ~> Set.Ball
haftmann@41398
   854
    Bex ~> Set.Bex
haftmann@41398
   855
    Suc ~> Nat.Suc
haftmann@41398
   856
    Pair ~> Product_Type.Pair
haftmann@41398
   857
    fst ~> Product_Type.fst
haftmann@41398
   858
    snd ~> Product_Type.snd
haftmann@41398
   859
    curry ~> Product_Type.curry
haftmann@41398
   860
    op : ~> Set.member
haftmann@41398
   861
    Collect ~> Set.Collect
haftmann@41398
   862
haftmann@41398
   863
INCOMPATIBILITY.
haftmann@41398
   864
haftmann@41398
   865
* More canonical naming convention for some fundamental definitions:
haftmann@41398
   866
haftmann@41398
   867
    bot_bool_eq ~> bot_bool_def
haftmann@41398
   868
    top_bool_eq ~> top_bool_def
haftmann@41398
   869
    inf_bool_eq ~> inf_bool_def
haftmann@41398
   870
    sup_bool_eq ~> sup_bool_def
haftmann@41398
   871
    bot_fun_eq  ~> bot_fun_def
haftmann@41398
   872
    top_fun_eq  ~> top_fun_def
haftmann@41398
   873
    inf_fun_eq  ~> inf_fun_def
haftmann@41398
   874
    sup_fun_eq  ~> sup_fun_def
haftmann@41398
   875
haftmann@41398
   876
INCOMPATIBILITY.
haftmann@41398
   877
haftmann@41398
   878
* More stylized fact names:
haftmann@41398
   879
haftmann@41398
   880
  expand_fun_eq ~> fun_eq_iff
haftmann@41398
   881
  expand_set_eq ~> set_eq_iff
haftmann@41398
   882
  set_ext       ~> set_eqI
haftmann@41398
   883
  nat_number    ~> eval_nat_numeral
haftmann@41398
   884
haftmann@41398
   885
INCOMPATIBILITY.
haftmann@41398
   886
wenzelm@41571
   887
* Refactoring of code-generation specific operations in theory List:
haftmann@41398
   888
haftmann@41398
   889
  constants
haftmann@41398
   890
    null ~> List.null
haftmann@41398
   891
haftmann@41398
   892
  facts
haftmann@41398
   893
    mem_iff ~> member_def
haftmann@41398
   894
    null_empty ~> null_def
haftmann@41398
   895
haftmann@41398
   896
INCOMPATIBILITY.  Note that these were not supposed to be used
haftmann@41398
   897
regularly unless for striking reasons; their main purpose was code
haftmann@41398
   898
generation.
haftmann@41398
   899
haftmann@41398
   900
Various operations from the Haskell prelude are used for generating
haftmann@41398
   901
Haskell code.
haftmann@41398
   902
wenzelm@41571
   903
* Term "bij f" is now an abbreviation of "bij_betw f UNIV UNIV".  Term
wenzelm@41571
   904
"surj f" is now an abbreviation of "range f = UNIV".  The theorems
wenzelm@41571
   905
bij_def and surj_def are unchanged.  INCOMPATIBILITY.
haftmann@41398
   906
haftmann@41398
   907
* Abolished some non-alphabetic type names: "prod" and "sum" replace
haftmann@41398
   908
"*" and "+" respectively.  INCOMPATIBILITY.
haftmann@41398
   909
haftmann@41398
   910
* Name "Plus" of disjoint sum operator "<+>" is now hidden.  Write
wenzelm@41571
   911
"Sum_Type.Plus" instead.
haftmann@41398
   912
haftmann@41398
   913
* Constant "split" has been merged with constant "prod_case"; names of
haftmann@41398
   914
ML functions, facts etc. involving split have been retained so far,
haftmann@41398
   915
though.  INCOMPATIBILITY.
haftmann@41398
   916
haftmann@41398
   917
* Dropped old infix syntax "_ mem _" for List.member; use "_ : set _"
haftmann@41398
   918
instead.  INCOMPATIBILITY.
haftmann@41398
   919
wenzelm@41571
   920
* Removed lemma "Option.is_none_none" which duplicates "is_none_def".
haftmann@41398
   921
INCOMPATIBILITY.
haftmann@41398
   922
wenzelm@41594
   923
* Former theory Library/Enum is now part of the HOL-Main image.
wenzelm@41594
   924
INCOMPATIBILITY: all constants of the Enum theory now have to be
wenzelm@41594
   925
referred to by its qualified name.
wenzelm@41594
   926
wenzelm@41594
   927
  enum    ~>  Enum.enum
wenzelm@41594
   928
  nlists  ~>  Enum.nlists
wenzelm@41594
   929
  product ~>  Enum.product
wenzelm@41594
   930
wenzelm@41594
   931
* Theory Library/Monad_Syntax provides do-syntax for monad types.
wenzelm@41594
   932
Syntax in Library/State_Monad has been changed to avoid ambiguities.
wenzelm@41594
   933
INCOMPATIBILITY.
wenzelm@41594
   934
wenzelm@41594
   935
* Theory Library/SetsAndFunctions has been split into
wenzelm@41594
   936
Library/Function_Algebras and Library/Set_Algebras; canonical names
wenzelm@41594
   937
for instance definitions for functions; various improvements.
wenzelm@41594
   938
INCOMPATIBILITY.
wenzelm@41594
   939
wenzelm@41594
   940
* Theory Library/Multiset provides stable quicksort implementation of
wenzelm@41594
   941
sort_key.
wenzelm@41594
   942
wenzelm@41594
   943
* Theory Library/Multiset: renamed empty_idemp ~> empty_neutral.
wenzelm@41594
   944
INCOMPATIBILITY.
wenzelm@41594
   945
wenzelm@41594
   946
* Session Multivariate_Analysis: introduced a type class for euclidean
wenzelm@41594
   947
space.  Most theorems are now stated in terms of euclidean spaces
wenzelm@41594
   948
instead of finite cartesian products.
wenzelm@41594
   949
wenzelm@41594
   950
  types
wenzelm@41594
   951
    real ^ 'n ~>  'a::real_vector
wenzelm@41594
   952
              ~>  'a::euclidean_space
wenzelm@41594
   953
              ~>  'a::ordered_euclidean_space
wenzelm@41594
   954
        (depends on your needs)
wenzelm@41594
   955
wenzelm@41594
   956
  constants
wenzelm@41594
   957
     _ $ _        ~> _ $$ _
wenzelm@41594
   958
     \<chi> x. _  ~> \<chi>\<chi> x. _
wenzelm@41594
   959
     CARD('n)     ~> DIM('a)
wenzelm@41594
   960
wenzelm@41594
   961
Also note that the indices are now natural numbers and not from some
wenzelm@41594
   962
finite type. Finite cartesian products of euclidean spaces, products
wenzelm@41594
   963
of euclidean spaces the real and complex numbers are instantiated to
wenzelm@41594
   964
be euclidean_spaces.  INCOMPATIBILITY.
wenzelm@41594
   965
wenzelm@41594
   966
* Session Probability: introduced pextreal as positive extended real
wenzelm@41594
   967
numbers.  Use pextreal as value for measures.  Introduce the
wenzelm@41594
   968
Radon-Nikodym derivative, product spaces and Fubini's theorem for
wenzelm@41594
   969
arbitrary sigma finite measures.  Introduces Lebesgue measure based on
wenzelm@41594
   970
the integral in Multivariate Analysis.  INCOMPATIBILITY.
wenzelm@41594
   971
wenzelm@41594
   972
* Session Imperative_HOL: revamped, corrected dozens of inadequacies.
wenzelm@41594
   973
INCOMPATIBILITY.
wenzelm@41594
   974
wenzelm@41594
   975
* Session SPARK (with image HOL-SPARK) provides commands to load and
wenzelm@41594
   976
prove verification conditions generated by the SPARK Ada program
wenzelm@41594
   977
verifier.  See also src/HOL/SPARK and src/HOL/SPARK/Examples.
berghofe@41567
   978
huffman@40621
   979
ballarin@41433
   980
*** HOL-Algebra ***
ballarin@41433
   981
ballarin@41433
   982
* Theorems for additive ring operations (locale abelian_monoid and
ballarin@41433
   983
descendants) are generated by interpretation from their multiplicative
ballarin@41434
   984
counterparts.  Names (in particular theorem names) have the mandatory
ballarin@41434
   985
qualifier 'add'.  Previous theorem names are redeclared for
ballarin@41434
   986
compatibility.
ballarin@41434
   987
wenzelm@41571
   988
* Structure "int_ring" is now an abbreviation (previously a
ballarin@41434
   989
definition).  This fits more natural with advanced interpretations.
ballarin@41433
   990
ballarin@41433
   991
huffman@40621
   992
*** HOLCF ***
huffman@40621
   993
huffman@40621
   994
* The domain package now runs in definitional mode by default: The
wenzelm@41571
   995
former command 'new_domain' is now called 'domain'.  To use the domain
huffman@40621
   996
package in its original axiomatic mode, use 'domain (unsafe)'.
huffman@40621
   997
INCOMPATIBILITY.
huffman@40621
   998
wenzelm@41571
   999
* The new class "domain" is now the default sort.  Class "predomain"
wenzelm@41571
  1000
is an unpointed version of "domain". Theories can be updated by
wenzelm@41571
  1001
replacing sort annotations as shown below.  INCOMPATIBILITY.
huffman@40621
  1002
huffman@40621
  1003
  'a::type ~> 'a::countable
huffman@40621
  1004
  'a::cpo  ~> 'a::predomain
huffman@40621
  1005
  'a::pcpo ~> 'a::domain
huffman@40621
  1006
wenzelm@41571
  1007
* The old type class "rep" has been superseded by class "domain".
huffman@40621
  1008
Accordingly, users of the definitional package must remove any
wenzelm@41571
  1009
"default_sort rep" declarations.  INCOMPATIBILITY.
huffman@40621
  1010
huffman@41401
  1011
* The domain package (definitional mode) now supports unpointed
huffman@41401
  1012
predomain argument types, as long as they are marked 'lazy'. (Strict
wenzelm@41571
  1013
arguments must be in class "domain".) For example, the following
huffman@41401
  1014
domain definition now works:
huffman@41401
  1015
huffman@41401
  1016
  domain natlist = nil | cons (lazy "nat discr") (lazy "natlist")
huffman@41401
  1017
huffman@41401
  1018
* Theory HOLCF/Library/HOL_Cpo provides cpo and predomain class
wenzelm@41571
  1019
instances for types from main HOL: bool, nat, int, char, 'a + 'b,
wenzelm@41571
  1020
'a option, and 'a list.  Additionally, it configures fixrec and the
wenzelm@41571
  1021
domain package to work with these types.  For example:
huffman@41401
  1022
huffman@41401
  1023
  fixrec isInl :: "('a + 'b) u -> tr"
huffman@41401
  1024
    where "isInl$(up$(Inl x)) = TT" | "isInl$(up$(Inr y)) = FF"
huffman@41401
  1025
huffman@41401
  1026
  domain V = VFun (lazy "V -> V") | VCon (lazy "nat") (lazy "V list")
huffman@41401
  1027
wenzelm@41571
  1028
* The "(permissive)" option of fixrec has been replaced with a
wenzelm@41571
  1029
per-equation "(unchecked)" option. See
wenzelm@41571
  1030
src/HOL/HOLCF/Tutorial/Fixrec_ex.thy for examples. INCOMPATIBILITY.
wenzelm@41571
  1031
wenzelm@41571
  1032
* The "bifinite" class no longer fixes a constant "approx"; the class
wenzelm@41571
  1033
now just asserts that such a function exists.  INCOMPATIBILITY.
wenzelm@41571
  1034
wenzelm@41571
  1035
* Former type "alg_defl" has been renamed to "defl".  HOLCF no longer
huffman@41287
  1036
defines an embedding of type 'a defl into udom by default; instances
wenzelm@41571
  1037
of "bifinite" and "domain" classes are available in
wenzelm@41571
  1038
src/HOL/HOLCF/Library/Defl_Bifinite.thy.
wenzelm@41571
  1039
wenzelm@41571
  1040
* The syntax "REP('a)" has been replaced with "DEFL('a)".
wenzelm@41571
  1041
wenzelm@41571
  1042
* The predicate "directed" has been removed.  INCOMPATIBILITY.
wenzelm@41571
  1043
wenzelm@41571
  1044
* The type class "finite_po" has been removed.  INCOMPATIBILITY.
wenzelm@41571
  1045
wenzelm@41571
  1046
* The function "cprod_map" has been renamed to "prod_map".
huffman@41401
  1047
INCOMPATIBILITY.
huffman@41401
  1048
huffman@41401
  1049
* The monadic bind operator on each powerdomain has new binder syntax
wenzelm@41571
  1050
similar to sets, e.g. "\<Union>\<sharp>x\<in>xs. t" represents
wenzelm@41571
  1051
"upper_bind\<cdot>xs\<cdot>(\<Lambda> x. t)".
huffman@41401
  1052
huffman@41401
  1053
* The infix syntax for binary union on each powerdomain has changed
wenzelm@41571
  1054
from e.g. "+\<sharp>" to "\<union>\<sharp>", for consistency with set
wenzelm@41571
  1055
syntax.  INCOMPATIBILITY.
wenzelm@41571
  1056
wenzelm@41571
  1057
* The constant "UU" has been renamed to "bottom".  The syntax "UU" is
huffman@41429
  1058
still supported as an input translation.
huffman@41429
  1059
huffman@40621
  1060
* Renamed some theorems (the original names are also still available).
wenzelm@41571
  1061
huffman@40621
  1062
  expand_fun_below   ~> fun_below_iff
huffman@40621
  1063
  below_fun_ext      ~> fun_belowI
huffman@40621
  1064
  expand_cfun_eq     ~> cfun_eq_iff
huffman@40621
  1065
  ext_cfun           ~> cfun_eqI
huffman@40621
  1066
  expand_cfun_below  ~> cfun_below_iff
huffman@40621
  1067
  below_cfun_ext     ~> cfun_belowI
huffman@40621
  1068
  cont2cont_Rep_CFun ~> cont2cont_APP
huffman@40621
  1069
huffman@40621
  1070
* The Abs and Rep functions for various types have changed names.
wenzelm@40948
  1071
Related theorem names have also changed to match. INCOMPATIBILITY.
wenzelm@41571
  1072
huffman@40621
  1073
  Rep_CFun  ~> Rep_cfun
huffman@40621
  1074
  Abs_CFun  ~> Abs_cfun
huffman@40621
  1075
  Rep_Sprod ~> Rep_sprod
huffman@40621
  1076
  Abs_Sprod ~> Abs_sprod
huffman@40621
  1077
  Rep_Ssum  ~> Rep_ssum
huffman@40621
  1078
  Abs_Ssum  ~> Abs_ssum
huffman@40621
  1079
huffman@40621
  1080
* Lemmas with names of the form *_defined_iff or *_strict_iff have
wenzelm@41571
  1081
been renamed to *_bottom_iff.  INCOMPATIBILITY.
huffman@40621
  1082
huffman@40621
  1083
* Various changes to bisimulation/coinduction with domain package:
wenzelm@41571
  1084
wenzelm@41571
  1085
  - Definitions of "bisim" constants no longer mention definedness.
wenzelm@41571
  1086
  - With mutual recursion, "bisim" predicate is now curried.
huffman@40621
  1087
  - With mutual recursion, each type gets a separate coind theorem.
huffman@40621
  1088
  - Variable names in bisim_def and coinduct rules have changed.
wenzelm@41571
  1089
huffman@40621
  1090
INCOMPATIBILITY.
huffman@40621
  1091
wenzelm@41571
  1092
* Case combinators generated by the domain package for type "foo" are
wenzelm@41571
  1093
now named "foo_case" instead of "foo_when".  INCOMPATIBILITY.
huffman@40621
  1094
huffman@40771
  1095
* Several theorems have been renamed to more accurately reflect the
wenzelm@41571
  1096
names of constants and types involved.  INCOMPATIBILITY.
wenzelm@41571
  1097
huffman@40771
  1098
  thelub_const    ~> lub_const
huffman@40771
  1099
  lub_const       ~> is_lub_const
huffman@40771
  1100
  thelubI         ~> lub_eqI
huffman@40771
  1101
  is_lub_lub      ~> is_lubD2
huffman@40771
  1102
  lubI            ~> is_lub_lub
huffman@40771
  1103
  unique_lub      ~> is_lub_unique
huffman@40771
  1104
  is_ub_lub       ~> is_lub_rangeD1
huffman@40771
  1105
  lub_bin_chain   ~> is_lub_bin_chain
huffman@41030
  1106
  lub_fun         ~> is_lub_fun
huffman@41030
  1107
  thelub_fun      ~> lub_fun
huffman@41031
  1108
  thelub_cfun     ~> lub_cfun
huffman@40771
  1109
  thelub_Pair     ~> lub_Pair
huffman@40771
  1110
  lub_cprod       ~> is_lub_prod
huffman@40771
  1111
  thelub_cprod    ~> lub_prod
huffman@40771
  1112
  minimal_cprod   ~> minimal_prod
huffman@40771
  1113
  inst_cprod_pcpo ~> inst_prod_pcpo
huffman@41430
  1114
  UU_I            ~> bottomI
huffman@41430
  1115
  compact_UU      ~> compact_bottom
huffman@41430
  1116
  deflation_UU    ~> deflation_bottom
huffman@41430
  1117
  finite_deflation_UU ~> finite_deflation_bottom
huffman@40771
  1118
wenzelm@41571
  1119
* Many legacy theorem names have been discontinued.  INCOMPATIBILITY.
wenzelm@41571
  1120
huffman@40621
  1121
  sq_ord_less_eq_trans ~> below_eq_trans
huffman@40621
  1122
  sq_ord_eq_less_trans ~> eq_below_trans
huffman@40621
  1123
  refl_less            ~> below_refl
huffman@40621
  1124
  trans_less           ~> below_trans
huffman@40621
  1125
  antisym_less         ~> below_antisym
huffman@40621
  1126
  antisym_less_inverse ~> po_eq_conv [THEN iffD1]
huffman@40621
  1127
  box_less             ~> box_below
huffman@40621
  1128
  rev_trans_less       ~> rev_below_trans
huffman@40621
  1129
  not_less2not_eq      ~> not_below2not_eq
huffman@40621
  1130
  less_UU_iff          ~> below_UU_iff
huffman@40621
  1131
  flat_less_iff        ~> flat_below_iff
huffman@40621
  1132
  adm_less             ~> adm_below
huffman@40621
  1133
  adm_not_less         ~> adm_not_below
huffman@40621
  1134
  adm_compact_not_less ~> adm_compact_not_below
huffman@40621
  1135
  less_fun_def         ~> below_fun_def
huffman@40621
  1136
  expand_fun_less      ~> fun_below_iff
huffman@40621
  1137
  less_fun_ext         ~> fun_belowI
huffman@40621
  1138
  less_discr_def       ~> below_discr_def
huffman@40621
  1139
  discr_less_eq        ~> discr_below_eq
huffman@40621
  1140
  less_unit_def        ~> below_unit_def
huffman@40621
  1141
  less_cprod_def       ~> below_prod_def
huffman@40621
  1142
  prod_lessI           ~> prod_belowI
huffman@40621
  1143
  Pair_less_iff        ~> Pair_below_iff
huffman@40621
  1144
  fst_less_iff         ~> fst_below_iff
huffman@40621
  1145
  snd_less_iff         ~> snd_below_iff
huffman@40621
  1146
  expand_cfun_less     ~> cfun_below_iff
huffman@40621
  1147
  less_cfun_ext        ~> cfun_belowI
huffman@40621
  1148
  injection_less       ~> injection_below
huffman@40621
  1149
  less_up_def          ~> below_up_def
huffman@40621
  1150
  not_Iup_less         ~> not_Iup_below
huffman@40621
  1151
  Iup_less             ~> Iup_below
huffman@40621
  1152
  up_less              ~> up_below
huffman@40621
  1153
  Def_inject_less_eq   ~> Def_below_Def
huffman@40621
  1154
  Def_less_is_eq       ~> Def_below_iff
huffman@40621
  1155
  spair_less_iff       ~> spair_below_iff
huffman@40621
  1156
  less_sprod           ~> below_sprod
huffman@40621
  1157
  spair_less           ~> spair_below
huffman@40621
  1158
  sfst_less_iff        ~> sfst_below_iff
huffman@40621
  1159
  ssnd_less_iff        ~> ssnd_below_iff
huffman@40621
  1160
  fix_least_less       ~> fix_least_below
huffman@40621
  1161
  dist_less_one        ~> dist_below_one
huffman@40621
  1162
  less_ONE             ~> below_ONE
huffman@40621
  1163
  ONE_less_iff         ~> ONE_below_iff
huffman@40621
  1164
  less_sinlD           ~> below_sinlD
huffman@40621
  1165
  less_sinrD           ~> below_sinrD
huffman@40621
  1166
huffman@40621
  1167
wenzelm@40948
  1168
*** FOL and ZF ***
haftmann@38522
  1169
wenzelm@41310
  1170
* All constant names are now qualified internally and use proper
wenzelm@41310
  1171
identifiers, e.g. "IFOL.eq" instead of "op =".  INCOMPATIBILITY.
wenzelm@41310
  1172
haftmann@38522
  1173
wenzelm@37868
  1174
*** ML ***
wenzelm@37868
  1175
wenzelm@41594
  1176
* Antiquotation @{assert} inlines a function bool -> unit that raises
wenzelm@41594
  1177
Fail if the argument is false.  Due to inlining the source position of
wenzelm@41594
  1178
failed assertions is included in the error output.
wenzelm@41594
  1179
wenzelm@41594
  1180
* Discontinued antiquotation @{theory_ref}, which is obsolete since ML
wenzelm@41594
  1181
text is in practice always evaluated with a stable theory checkpoint.
wenzelm@41594
  1182
Minor INCOMPATIBILITY, use (Theory.check_thy @{theory}) instead.
wenzelm@41594
  1183
wenzelm@41594
  1184
* Antiquotation @{theory A} refers to theory A from the ancestry of
wenzelm@41594
  1185
the current context, not any accidental theory loader state as before.
wenzelm@41594
  1186
Potential INCOMPATIBILITY, subtle change in semantics.
wenzelm@41228
  1187
wenzelm@40956
  1188
* Syntax.pretty_priority (default 0) configures the required priority
wenzelm@40956
  1189
of pretty-printed output and thus affects insertion of parentheses.
wenzelm@40956
  1190
wenzelm@40959
  1191
* Syntax.default_root (default "any") configures the inner syntax
wenzelm@40959
  1192
category (nonterminal symbol) for parsing of terms.
wenzelm@40959
  1193
wenzelm@40722
  1194
* Former exception Library.UnequalLengths now coincides with
wenzelm@40722
  1195
ListPair.UnequalLengths.
wenzelm@40722
  1196
wenzelm@41594
  1197
* Renamed structure MetaSimplifier to Raw_Simplifier.  Note that the
wenzelm@41594
  1198
main functionality is provided by structure Simplifier.
wenzelm@41594
  1199
wenzelm@40627
  1200
* Renamed raw "explode" function to "raw_explode" to emphasize its
wenzelm@40627
  1201
meaning.  Note that internally to Isabelle, Symbol.explode is used in
wenzelm@40627
  1202
almost all situations.
wenzelm@40627
  1203
wenzelm@40318
  1204
* Discontinued obsolete function sys_error and exception SYS_ERROR.
wenzelm@40318
  1205
See implementation manual for further details on exceptions in
wenzelm@40318
  1206
Isabelle/ML.
wenzelm@40318
  1207
wenzelm@39616
  1208
* Renamed setmp_noncritical to Unsynchronized.setmp to emphasize its
wenzelm@39616
  1209
meaning.
wenzelm@39616
  1210
wenzelm@39557
  1211
* Renamed structure PureThy to Pure_Thy and moved most of its
wenzelm@39557
  1212
operations to structure Global_Theory, to emphasize that this is
wenzelm@39557
  1213
rarely-used global-only stuff.
wenzelm@39557
  1214
wenzelm@39513
  1215
* Discontinued Output.debug.  Minor INCOMPATIBILITY, use plain writeln
wenzelm@39513
  1216
instead (or tracing for high-volume output).
wenzelm@39513
  1217
wenzelm@38980
  1218
* Configuration option show_question_marks only affects regular pretty
wenzelm@38980
  1219
printing of types and terms, not raw Term.string_of_vname.
wenzelm@38980
  1220
wenzelm@39164
  1221
* ML_Context.thm and ML_Context.thms are no longer pervasive.  Rare
wenzelm@39164
  1222
INCOMPATIBILITY, superseded by static antiquotations @{thm} and
wenzelm@39164
  1223
@{thms} for most purposes.
wenzelm@39164
  1224
wenzelm@41594
  1225
* ML structure Unsynchronized is never opened, not even in Isar
wenzelm@38980
  1226
interaction mode as before.  Old Unsynchronized.set etc. have been
wenzelm@38980
  1227
discontinued -- use plain := instead.  This should be *rare* anyway,
wenzelm@38980
  1228
since modern tools always work via official context data, notably
wenzelm@38980
  1229
configuration options.
wenzelm@38980
  1230
wenzelm@39239
  1231
* Parallel and asynchronous execution requires special care concerning
wenzelm@39239
  1232
interrupts.  Structure Exn provides some convenience functions that
wenzelm@39239
  1233
avoid working directly with raw Interrupt.  User code must not absorb
wenzelm@39239
  1234
interrupts -- intermediate handling (for cleanup etc.) needs to be
wenzelm@39239
  1235
followed by re-raising of the original exception.  Another common
wenzelm@39239
  1236
source of mistakes are "handle _" patterns, which make the meaning of
wenzelm@39239
  1237
the program subject to physical effects of the environment.
wenzelm@39239
  1238
wenzelm@37868
  1239
wenzelm@37868
  1240
wenzelm@37144
  1241
New in Isabelle2009-2 (June 2010)
wenzelm@37144
  1242
---------------------------------
haftmann@33993
  1243
wenzelm@35260
  1244
*** General ***
wenzelm@35260
  1245
wenzelm@35436
  1246
* Authentic syntax for *all* logical entities (type classes, type
wenzelm@35436
  1247
constructors, term constants): provides simple and robust
wenzelm@35436
  1248
correspondence between formal entities and concrete syntax.  Within
wenzelm@35436
  1249
the parse tree / AST representations, "constants" are decorated by
wenzelm@35436
  1250
their category (class, type, const) and spelled out explicitly with
wenzelm@35436
  1251
their full internal name.
wenzelm@35436
  1252
wenzelm@35436
  1253
Substantial INCOMPATIBILITY concerning low-level syntax declarations
wenzelm@35436
  1254
and translations (translation rules and translation functions in ML).
wenzelm@35436
  1255
Some hints on upgrading:
wenzelm@35260
  1256
wenzelm@35260
  1257
  - Many existing uses of 'syntax' and 'translations' can be replaced
wenzelm@35436
  1258
    by more modern 'type_notation', 'notation' and 'abbreviation',
wenzelm@35436
  1259
    which are independent of this issue.
wenzelm@35260
  1260
wenzelm@35260
  1261
  - 'translations' require markup within the AST; the term syntax
wenzelm@35260
  1262
    provides the following special forms:
wenzelm@35260
  1263
wenzelm@35260
  1264
      CONST c   -- produces syntax version of constant c from context
wenzelm@35261
  1265
      XCONST c  -- literally c, checked as constant from context
wenzelm@35261
  1266
      c         -- literally c, if declared by 'syntax'
wenzelm@35261
  1267
wenzelm@35261
  1268
    Plain identifiers are treated as AST variables -- occasionally the
wenzelm@35261
  1269
    system indicates accidental variables via the error "rhs contains
wenzelm@35261
  1270
    extra variables".
wenzelm@35260
  1271
wenzelm@35436
  1272
    Type classes and type constructors are marked according to their
wenzelm@35436
  1273
    concrete syntax.  Some old translations rules need to be written
wenzelm@35436
  1274
    for the "type" category, using type constructor application
wenzelm@35436
  1275
    instead of pseudo-term application of the default category
wenzelm@35436
  1276
    "logic".
wenzelm@35436
  1277
wenzelm@35260
  1278
  - 'parse_translation' etc. in ML may use the following
wenzelm@35260
  1279
    antiquotations:
wenzelm@35260
  1280
wenzelm@35436
  1281
      @{class_syntax c}   -- type class c within parse tree / AST
wenzelm@35436
  1282
      @{term_syntax c}    -- type constructor c within parse tree / AST
wenzelm@35260
  1283
      @{const_syntax c}   -- ML version of "CONST c" above
wenzelm@35260
  1284
      @{syntax_const c}   -- literally c (checked wrt. 'syntax' declarations)
wenzelm@35260
  1285
wenzelm@35436
  1286
  - Literal types within 'typed_print_translations', i.e. those *not*
wenzelm@35436
  1287
    represented as pseudo-terms are represented verbatim.  Use @{class
wenzelm@35436
  1288
    c} or @{type_name c} here instead of the above syntax
wenzelm@35436
  1289
    antiquotations.
wenzelm@35436
  1290
wenzelm@35260
  1291
Note that old non-authentic syntax was based on unqualified base
wenzelm@35436
  1292
names, so all of the above "constant" names would coincide.  Recall
wenzelm@35436
  1293
that 'print_syntax' and ML_command "set Syntax.trace_ast" help to
wenzelm@35436
  1294
diagnose syntax problems.
wenzelm@35260
  1295
wenzelm@35351
  1296
* Type constructors admit general mixfix syntax, not just infix.
wenzelm@35351
  1297
wenzelm@36508
  1298
* Concrete syntax may be attached to local entities without a proof
wenzelm@36508
  1299
body, too.  This works via regular mixfix annotations for 'fix',
wenzelm@36508
  1300
'def', 'obtain' etc. or via the explicit 'write' command, which is
wenzelm@36508
  1301
similar to the 'notation' command in theory specifications.
wenzelm@36508
  1302
wenzelm@37351
  1303
* Discontinued unnamed infix syntax (legacy feature for many years) --
wenzelm@37351
  1304
need to specify constant name and syntax separately.  Internal ML
wenzelm@37351
  1305
datatype constructors have been renamed from InfixName to Infix etc.
wenzelm@37351
  1306
Minor INCOMPATIBILITY.
wenzelm@37351
  1307
wenzelm@37351
  1308
* Schematic theorem statements need to be explicitly markup as such,
wenzelm@37351
  1309
via commands 'schematic_lemma', 'schematic_theorem',
wenzelm@37351
  1310
'schematic_corollary'.  Thus the relevance of the proof is made
wenzelm@37351
  1311
syntactically clear, which impacts performance in a parallel or
wenzelm@37351
  1312
asynchronous interactive environment.  Minor INCOMPATIBILITY.
wenzelm@37351
  1313
wenzelm@35613
  1314
* Use of cumulative prems via "!" in some proof methods has been
wenzelm@37351
  1315
discontinued (old legacy feature).
wenzelm@35613
  1316
boehmes@35979
  1317
* References 'trace_simp' and 'debug_simp' have been replaced by
wenzelm@36857
  1318
configuration options stored in the context. Enabling tracing (the
wenzelm@36857
  1319
case of debugging is similar) in proofs works via
wenzelm@36857
  1320
wenzelm@36857
  1321
  using [[trace_simp = true]]
wenzelm@36857
  1322
wenzelm@36857
  1323
Tracing is then active for all invocations of the simplifier in
wenzelm@36857
  1324
subsequent goal refinement steps. Tracing may also still be enabled or
wenzelm@40780
  1325
disabled via the ProofGeneral settings menu.
boehmes@35979
  1326
wenzelm@36177
  1327
* Separate commands 'hide_class', 'hide_type', 'hide_const',
wenzelm@36177
  1328
'hide_fact' replace the former 'hide' KIND command.  Minor
wenzelm@36177
  1329
INCOMPATIBILITY.
wenzelm@36177
  1330
wenzelm@37298
  1331
* Improved parallelism of proof term normalization: usedir -p2 -q0 is
wenzelm@37298
  1332
more efficient than combinations with -q1 or -q2.
wenzelm@37298
  1333
wenzelm@35260
  1334
haftmann@34170
  1335
*** Pure ***
haftmann@34170
  1336
wenzelm@37351
  1337
* Proofterms record type-class reasoning explicitly, using the
wenzelm@37351
  1338
"unconstrain" operation internally.  This eliminates all sort
wenzelm@37351
  1339
constraints from a theorem and proof, introducing explicit
wenzelm@37351
  1340
OFCLASS-premises.  On the proof term level, this operation is
wenzelm@37351
  1341
automatically applied at theorem boundaries, such that closed proofs
wenzelm@37351
  1342
are always free of sort constraints.  INCOMPATIBILITY for tools that
wenzelm@37351
  1343
inspect proof terms.
haftmann@36147
  1344
wenzelm@35765
  1345
* Local theory specifications may depend on extra type variables that
wenzelm@35765
  1346
are not present in the result type -- arguments TYPE('a) :: 'a itself
wenzelm@35765
  1347
are added internally.  For example:
wenzelm@35765
  1348
wenzelm@35765
  1349
  definition unitary :: bool where "unitary = (ALL (x::'a) y. x = y)"
wenzelm@35765
  1350
wenzelm@37351
  1351
* Predicates of locales introduced by classes carry a mandatory
wenzelm@37351
  1352
"class" prefix.  INCOMPATIBILITY.
wenzelm@37351
  1353
wenzelm@37351
  1354
* Vacuous class specifications observe default sort.  INCOMPATIBILITY.
wenzelm@37351
  1355
wenzelm@37351
  1356
* Old 'axclass' command has been discontinued.  INCOMPATIBILITY, use
wenzelm@37351
  1357
'class' instead.
wenzelm@37351
  1358
wenzelm@37351
  1359
* Command 'code_reflect' allows to incorporate generated ML code into
wenzelm@37351
  1360
runtime environment; replaces immature code_datatype antiquotation.
wenzelm@37351
  1361
INCOMPATIBILITY.
wenzelm@37351
  1362
wenzelm@37351
  1363
* Code generator: simple concept for abstract datatypes obeying
wenzelm@37351
  1364
invariants.
wenzelm@37351
  1365
wenzelm@36857
  1366
* Code generator: details of internal data cache have no impact on the
wenzelm@36857
  1367
user space functionality any longer.
wenzelm@36857
  1368
wenzelm@37351
  1369
* Methods "unfold_locales" and "intro_locales" ignore non-locale
wenzelm@37351
  1370
subgoals.  This is more appropriate for interpretations with 'where'.
wenzelm@36857
  1371
INCOMPATIBILITY.
haftmann@34170
  1372
wenzelm@36356
  1373
* Command 'example_proof' opens an empty proof body.  This allows to
wenzelm@36356
  1374
experiment with Isar, without producing any persistent result.
wenzelm@36356
  1375
wenzelm@35413
  1376
* Commands 'type_notation' and 'no_type_notation' declare type syntax
wenzelm@35413
  1377
within a local theory context, with explicit checking of the
wenzelm@35413
  1378
constructors involved (in contrast to the raw 'syntax' versions).
wenzelm@35413
  1379
wenzelm@36178
  1380
* Commands 'types' and 'typedecl' now work within a local theory
wenzelm@36178
  1381
context -- without introducing dependencies on parameters or
wenzelm@36178
  1382
assumptions, which is not possible in Isabelle/Pure.
wenzelm@35681
  1383
wenzelm@36857
  1384
* Command 'defaultsort' has been renamed to 'default_sort', it works
wenzelm@36857
  1385
within a local theory context.  Minor INCOMPATIBILITY.
wenzelm@36454
  1386
haftmann@34170
  1387
haftmann@33993
  1388
*** HOL ***
haftmann@33993
  1389
wenzelm@37351
  1390
* Command 'typedef' now works within a local theory context -- without
wenzelm@37351
  1391
introducing dependencies on parameters or assumptions, which is not
wenzelm@37351
  1392
possible in Isabelle/Pure/HOL.  Note that the logical environment may
wenzelm@37351
  1393
contain multiple interpretations of local typedefs (with different
wenzelm@37351
  1394
non-emptiness proofs), even in a global theory context.
wenzelm@37351
  1395
wenzelm@37351
  1396
* New package for quotient types.  Commands 'quotient_type' and
wenzelm@37351
  1397
'quotient_definition' may be used for defining types and constants by
wenzelm@37351
  1398
quotient constructions.  An example is the type of integers created by
wenzelm@37351
  1399
quotienting pairs of natural numbers:
wenzelm@37380
  1400
wenzelm@37351
  1401
  fun
wenzelm@37380
  1402
    intrel :: "(nat * nat) => (nat * nat) => bool"
wenzelm@37351
  1403
  where
wenzelm@37351
  1404
    "intrel (x, y) (u, v) = (x + v = u + y)"
wenzelm@37351
  1405
wenzelm@37380
  1406
  quotient_type int = "nat * nat" / intrel
wenzelm@37351
  1407
    by (auto simp add: equivp_def expand_fun_eq)
wenzelm@37380
  1408
wenzelm@37351
  1409
  quotient_definition
wenzelm@37351
  1410
    "0::int" is "(0::nat, 0::nat)"
wenzelm@37351
  1411
wenzelm@37351
  1412
The method "lifting" can be used to lift of theorems from the
wenzelm@37351
  1413
underlying "raw" type to the quotient type.  The example
wenzelm@37351
  1414
src/HOL/Quotient_Examples/FSet.thy includes such a quotient
wenzelm@37351
  1415
construction and provides a reasoning infrastructure for finite sets.
wenzelm@37351
  1416
wenzelm@37351
  1417
* Renamed Library/Quotient.thy to Library/Quotient_Type.thy to avoid
wenzelm@37351
  1418
clash with new theory Quotient in Main HOL.
wenzelm@37351
  1419
wenzelm@37351
  1420
* Moved the SMT binding into the main HOL session, eliminating
wenzelm@37351
  1421
separate HOL-SMT session.
wenzelm@37351
  1422
haftmann@37020
  1423
* List membership infix mem operation is only an input abbreviation.
haftmann@37020
  1424
INCOMPATIBILITY.
haftmann@37020
  1425
wenzelm@37144
  1426
* Theory Library/Word.thy has been removed.  Use library Word/Word.thy
wenzelm@37144
  1427
for future developements; former Library/Word.thy is still present in
wenzelm@37144
  1428
the AFP entry RSAPPS.
haftmann@36963
  1429
wenzelm@36857
  1430
* Theorem Int.int_induct renamed to Int.int_of_nat_induct and is no
wenzelm@36857
  1431
longer shadowed.  INCOMPATIBILITY.
haftmann@36808
  1432
huffman@36836
  1433
* Dropped theorem duplicate comp_arith; use semiring_norm instead.
huffman@36836
  1434
INCOMPATIBILITY.
huffman@36836
  1435
huffman@36836
  1436
* Dropped theorem RealPow.real_sq_order; use power2_le_imp_le instead.
huffman@36836
  1437
INCOMPATIBILITY.
haftmann@36714
  1438
wenzelm@36857
  1439
* Dropped normalizing_semiring etc; use the facts in semiring classes
wenzelm@36857
  1440
instead.  INCOMPATIBILITY.
wenzelm@36857
  1441
huffman@36979
  1442
* Dropped several real-specific versions of lemmas about floor and
wenzelm@37351
  1443
ceiling; use the generic lemmas from theory "Archimedean_Field"
wenzelm@37351
  1444
instead.  INCOMPATIBILITY.
huffman@36979
  1445
huffman@36979
  1446
  floor_number_of_eq         ~> floor_number_of
huffman@36979
  1447
  le_floor_eq_number_of      ~> number_of_le_floor
huffman@36979
  1448
  le_floor_eq_zero           ~> zero_le_floor
huffman@36979
  1449
  le_floor_eq_one            ~> one_le_floor
huffman@36979
  1450
  floor_less_eq_number_of    ~> floor_less_number_of
huffman@36979
  1451
  floor_less_eq_zero         ~> floor_less_zero
huffman@36979
  1452
  floor_less_eq_one          ~> floor_less_one
huffman@36979
  1453
  less_floor_eq_number_of    ~> number_of_less_floor
huffman@36979
  1454
  less_floor_eq_zero         ~> zero_less_floor
huffman@36979
  1455
  less_floor_eq_one          ~> one_less_floor
huffman@36979
  1456
  floor_le_eq_number_of      ~> floor_le_number_of
huffman@36979
  1457
  floor_le_eq_zero           ~> floor_le_zero
huffman@36979
  1458
  floor_le_eq_one            ~> floor_le_one
huffman@36979
  1459
  floor_subtract_number_of   ~> floor_diff_number_of
huffman@36979
  1460
  floor_subtract_one         ~> floor_diff_one
huffman@36979
  1461
  ceiling_number_of_eq       ~> ceiling_number_of
huffman@36979
  1462
  ceiling_le_eq_number_of    ~> ceiling_le_number_of
huffman@36979
  1463
  ceiling_le_zero_eq         ~> ceiling_le_zero
huffman@36979
  1464
  ceiling_le_eq_one          ~> ceiling_le_one
huffman@36979
  1465
  less_ceiling_eq_number_of  ~> number_of_less_ceiling
huffman@36979
  1466
  less_ceiling_eq_zero       ~> zero_less_ceiling
huffman@36979
  1467
  less_ceiling_eq_one        ~> one_less_ceiling
huffman@36979
  1468
  ceiling_less_eq_number_of  ~> ceiling_less_number_of
huffman@36979
  1469
  ceiling_less_eq_zero       ~> ceiling_less_zero
huffman@36979
  1470
  ceiling_less_eq_one        ~> ceiling_less_one
huffman@36979
  1471
  le_ceiling_eq_number_of    ~> number_of_le_ceiling
huffman@36979
  1472
  le_ceiling_eq_zero         ~> zero_le_ceiling
huffman@36979
  1473
  le_ceiling_eq_one          ~> one_le_ceiling
huffman@36979
  1474
  ceiling_subtract_number_of ~> ceiling_diff_number_of
huffman@36979
  1475
  ceiling_subtract_one       ~> ceiling_diff_one
huffman@36979
  1476
wenzelm@37144
  1477
* Theory "Finite_Set": various folding_XXX locales facilitate the
wenzelm@36857
  1478
application of the various fold combinators on finite sets.
wenzelm@36857
  1479
wenzelm@36857
  1480
* Library theory "RBT" renamed to "RBT_Impl"; new library theory "RBT"
wenzelm@36857
  1481
provides abstract red-black tree type which is backed by "RBT_Impl" as
wenzelm@36857
  1482
implementation.  INCOMPATIBILTY.
haftmann@36147
  1483
huffman@36830
  1484
* Theory Library/Coinductive_List has been removed -- superseded by
wenzelm@35763
  1485
AFP/thys/Coinductive.
wenzelm@35763
  1486
huffman@36829
  1487
* Theory PReal, including the type "preal" and related operations, has
huffman@36829
  1488
been removed.  INCOMPATIBILITY.
huffman@36829
  1489
wenzelm@37380
  1490
* Real: new development using Cauchy Sequences.
wenzelm@37380
  1491
wenzelm@37351
  1492
* Split off theory "Big_Operators" containing setsum, setprod,
wenzelm@37351
  1493
Inf_fin, Sup_fin, Min, Max from theory Finite_Set.  INCOMPATIBILITY.
wenzelm@36857
  1494
wenzelm@36857
  1495
* Theory "Rational" renamed to "Rat", for consistency with "Nat",
wenzelm@36857
  1496
"Int" etc.  INCOMPATIBILITY.
wenzelm@36857
  1497
wenzelm@37351
  1498
* Constant Rat.normalize needs to be qualified.  INCOMPATIBILITY.
wenzelm@37143
  1499
wenzelm@36857
  1500
* New set of rules "ac_simps" provides combined assoc / commute
wenzelm@36857
  1501
rewrites for all interpretations of the appropriate generic locales.
wenzelm@36857
  1502
wenzelm@36857
  1503
* Renamed theory "OrderedGroup" to "Groups" and split theory
wenzelm@36857
  1504
"Ring_and_Field" into theories "Rings" and "Fields"; for more
wenzelm@36857
  1505
appropriate and more consistent names suitable for name prefixes
wenzelm@36857
  1506
within the HOL theories.  INCOMPATIBILITY.
haftmann@35050
  1507
haftmann@35084
  1508
* Some generic constants have been put to appropriate theories:
wenzelm@36857
  1509
  - less_eq, less: Orderings
wenzelm@36857
  1510
  - zero, one, plus, minus, uminus, times, abs, sgn: Groups
wenzelm@36857
  1511
  - inverse, divide: Rings
haftmann@35084
  1512
INCOMPATIBILITY.
haftmann@35084
  1513
wenzelm@36857
  1514
* More consistent naming of type classes involving orderings (and
wenzelm@36857
  1515
lattices):
haftmann@35027
  1516
haftmann@35027
  1517
    lower_semilattice                   ~> semilattice_inf
haftmann@35027
  1518
    upper_semilattice                   ~> semilattice_sup
haftmann@35027
  1519
haftmann@35027
  1520
    dense_linear_order                  ~> dense_linorder
haftmann@35027
  1521
haftmann@35027
  1522
    pordered_ab_group_add               ~> ordered_ab_group_add
haftmann@35027
  1523
    pordered_ab_group_add_abs           ~> ordered_ab_group_add_abs
haftmann@35027
  1524
    pordered_ab_semigroup_add           ~> ordered_ab_semigroup_add
haftmann@35027
  1525
    pordered_ab_semigroup_add_imp_le    ~> ordered_ab_semigroup_add_imp_le
haftmann@35027
  1526
    pordered_cancel_ab_semigroup_add    ~> ordered_cancel_ab_semigroup_add
haftmann@35027
  1527
    pordered_cancel_comm_semiring       ~> ordered_cancel_comm_semiring
haftmann@35027
  1528
    pordered_cancel_semiring            ~> ordered_cancel_semiring
haftmann@35027
  1529
    pordered_comm_monoid_add            ~> ordered_comm_monoid_add
haftmann@35027
  1530
    pordered_comm_ring                  ~> ordered_comm_ring
haftmann@35027
  1531
    pordered_comm_semiring              ~> ordered_comm_semiring
haftmann@35027
  1532
    pordered_ring                       ~> ordered_ring
haftmann@35027
  1533
    pordered_ring_abs                   ~> ordered_ring_abs
haftmann@35027
  1534
    pordered_semiring                   ~> ordered_semiring
haftmann@35027
  1535
haftmann@35027
  1536
    ordered_ab_group_add                ~> linordered_ab_group_add
haftmann@35027
  1537
    ordered_ab_semigroup_add            ~> linordered_ab_semigroup_add
haftmann@35027
  1538
    ordered_cancel_ab_semigroup_add     ~> linordered_cancel_ab_semigroup_add
haftmann@35027
  1539
    ordered_comm_semiring_strict        ~> linordered_comm_semiring_strict
haftmann@35027
  1540
    ordered_field                       ~> linordered_field
haftmann@35027
  1541
    ordered_field_no_lb                 ~> linordered_field_no_lb
haftmann@35027
  1542
    ordered_field_no_ub                 ~> linordered_field_no_ub
haftmann@35027
  1543
    ordered_field_dense_linear_order    ~> dense_linordered_field
haftmann@35027
  1544
    ordered_idom                        ~> linordered_idom
haftmann@35027
  1545
    ordered_ring                        ~> linordered_ring
haftmann@35027
  1546
    ordered_ring_le_cancel_factor       ~> linordered_ring_le_cancel_factor
haftmann@35027
  1547
    ordered_ring_less_cancel_factor     ~> linordered_ring_less_cancel_factor
haftmann@35027
  1548
    ordered_ring_strict                 ~> linordered_ring_strict
haftmann@35027
  1549
    ordered_semidom                     ~> linordered_semidom
haftmann@35027
  1550
    ordered_semiring                    ~> linordered_semiring
haftmann@35027
  1551
    ordered_semiring_1                  ~> linordered_semiring_1
haftmann@35027
  1552
    ordered_semiring_1_strict           ~> linordered_semiring_1_strict
haftmann@35027
  1553
    ordered_semiring_strict             ~> linordered_semiring_strict
haftmann@35027
  1554
wenzelm@36857
  1555
  The following slightly odd type classes have been moved to a
wenzelm@37351
  1556
  separate theory Library/Lattice_Algebras:
haftmann@35032
  1557
haftmann@35032
  1558
    lordered_ab_group_add               ~> lattice_ab_group_add
haftmann@35032
  1559
    lordered_ab_group_add_abs           ~> lattice_ab_group_add_abs
haftmann@35032
  1560
    lordered_ab_group_add_meet          ~> semilattice_inf_ab_group_add
haftmann@35032
  1561
    lordered_ab_group_add_join          ~> semilattice_sup_ab_group_add
haftmann@35032
  1562
    lordered_ring                       ~> lattice_ring
haftmann@35032
  1563
haftmann@35027
  1564
INCOMPATIBILITY.
haftmann@35027
  1565
haftmann@36416
  1566
* Refined field classes:
wenzelm@36857
  1567
  - classes division_ring_inverse_zero, field_inverse_zero,
wenzelm@36857
  1568
    linordered_field_inverse_zero include rule inverse 0 = 0 --
wenzelm@36857
  1569
    subsumes former division_by_zero class;
wenzelm@36857
  1570
  - numerous lemmas have been ported from field to division_ring.
wenzelm@36857
  1571
INCOMPATIBILITY.
haftmann@36416
  1572
haftmann@36416
  1573
* Refined algebra theorem collections:
wenzelm@36857
  1574
  - dropped theorem group group_simps, use algebra_simps instead;
wenzelm@36857
  1575
  - dropped theorem group ring_simps, use field_simps instead;
wenzelm@36857
  1576
  - proper theorem collection field_simps subsumes former theorem
wenzelm@36857
  1577
    groups field_eq_simps and field_simps;
wenzelm@36857
  1578
  - dropped lemma eq_minus_self_iff which is a duplicate for
wenzelm@36857
  1579
    equal_neg_zero.
wenzelm@36857
  1580
INCOMPATIBILITY.
wenzelm@35009
  1581
wenzelm@35009
  1582
* Theory Finite_Set and List: some lemmas have been generalized from
wenzelm@34076
  1583
sets to lattices:
wenzelm@34076
  1584
haftmann@34007
  1585
  fun_left_comm_idem_inter      ~> fun_left_comm_idem_inf
haftmann@34007
  1586
  fun_left_comm_idem_union      ~> fun_left_comm_idem_sup
haftmann@34007
  1587
  inter_Inter_fold_inter        ~> inf_Inf_fold_inf
haftmann@34007
  1588
  union_Union_fold_union        ~> sup_Sup_fold_sup
haftmann@34007
  1589
  Inter_fold_inter              ~> Inf_fold_inf
haftmann@34007
  1590
  Union_fold_union              ~> Sup_fold_sup
haftmann@34007
  1591
  inter_INTER_fold_inter        ~> inf_INFI_fold_inf
haftmann@34007
  1592
  union_UNION_fold_union        ~> sup_SUPR_fold_sup
haftmann@34007
  1593
  INTER_fold_inter              ~> INFI_fold_inf
haftmann@34007
  1594
  UNION_fold_union              ~> SUPR_fold_sup
haftmann@34007
  1595
wenzelm@37351
  1596
* Theory "Complete_Lattice": lemmas top_def and bot_def have been
haftmann@36416
  1597
replaced by the more convenient lemmas Inf_empty and Sup_empty.
haftmann@36416
  1598
Dropped lemmas Inf_insert_simp and Sup_insert_simp, which are subsumed
haftmann@36416
  1599
by Inf_insert and Sup_insert.  Lemmas Inf_UNIV and Sup_UNIV replace
haftmann@36416
  1600
former Inf_Univ and Sup_Univ.  Lemmas inf_top_right and sup_bot_right
haftmann@36416
  1601
subsume inf_top and sup_bot respectively.  INCOMPATIBILITY.
haftmann@36416
  1602
wenzelm@36857
  1603
* Reorganized theory Multiset: swapped notation of pointwise and
wenzelm@36857
  1604
multiset order:
wenzelm@37351
  1605
wenzelm@36857
  1606
  - pointwise ordering is instance of class order with standard syntax
wenzelm@36857
  1607
    <= and <;
wenzelm@36857
  1608
  - multiset ordering has syntax <=# and <#; partial order properties
wenzelm@36857
  1609
    are provided by means of interpretation with prefix
wenzelm@36857
  1610
    multiset_order;
wenzelm@36857
  1611
  - less duplication, less historical organization of sections,
wenzelm@36857
  1612
    conversion from associations lists to multisets, rudimentary code
wenzelm@36857
  1613
    generation;
wenzelm@36857
  1614
  - use insert_DiffM2 [symmetric] instead of elem_imp_eq_diff_union,
wenzelm@36857
  1615
    if needed.
wenzelm@37351
  1616
nipkow@36903
  1617
Renamed:
wenzelm@37351
  1618
wenzelm@37351
  1619
  multiset_eq_conv_count_eq  ~>  multiset_ext_iff
wenzelm@37351
  1620
  multi_count_ext  ~>  multiset_ext
wenzelm@37351
  1621
  diff_union_inverse2  ~>  diff_union_cancelR
wenzelm@37351
  1622
wenzelm@36857
  1623
INCOMPATIBILITY.
haftmann@36416
  1624
nipkow@36903
  1625
* Theory Permutation: replaced local "remove" by List.remove1.
nipkow@36903
  1626
haftmann@36416
  1627
* Code generation: ML and OCaml code is decorated with signatures.
haftmann@36416
  1628
wenzelm@35009
  1629
* Theory List: added transpose.
wenzelm@35009
  1630
huffman@35810
  1631
* Library/Nat_Bijection.thy is a collection of bijective functions
huffman@35810
  1632
between nat and other types, which supersedes the older libraries
huffman@35810
  1633
Library/Nat_Int_Bij.thy and HOLCF/NatIso.thy.  INCOMPATIBILITY.
huffman@35810
  1634
huffman@35810
  1635
  Constants:
huffman@35810
  1636
  Nat_Int_Bij.nat2_to_nat         ~> prod_encode
huffman@35810
  1637
  Nat_Int_Bij.nat_to_nat2         ~> prod_decode
huffman@35810
  1638
  Nat_Int_Bij.int_to_nat_bij      ~> int_encode
huffman@35810
  1639
  Nat_Int_Bij.nat_to_int_bij      ~> int_decode
huffman@35810
  1640
  Countable.pair_encode           ~> prod_encode
huffman@35810
  1641
  NatIso.prod2nat                 ~> prod_encode
huffman@35810
  1642
  NatIso.nat2prod                 ~> prod_decode
huffman@35810
  1643
  NatIso.sum2nat                  ~> sum_encode
huffman@35810
  1644
  NatIso.nat2sum                  ~> sum_decode
huffman@35810
  1645
  NatIso.list2nat                 ~> list_encode
huffman@35810
  1646
  NatIso.nat2list                 ~> list_decode
huffman@35810
  1647
  NatIso.set2nat                  ~> set_encode
huffman@35810
  1648
  NatIso.nat2set                  ~> set_decode
huffman@35810
  1649
huffman@35810
  1650
  Lemmas:
huffman@35810
  1651
  Nat_Int_Bij.bij_nat_to_int_bij  ~> bij_int_decode
huffman@35810
  1652
  Nat_Int_Bij.nat2_to_nat_inj     ~> inj_prod_encode
huffman@35810
  1653
  Nat_Int_Bij.nat2_to_nat_surj    ~> surj_prod_encode
huffman@35810
  1654
  Nat_Int_Bij.nat_to_nat2_inj     ~> inj_prod_decode
huffman@35810
  1655
  Nat_Int_Bij.nat_to_nat2_surj    ~> surj_prod_decode
huffman@35810
  1656
  Nat_Int_Bij.i2n_n2i_id          ~> int_encode_inverse
huffman@35810
  1657
  Nat_Int_Bij.n2i_i2n_id          ~> int_decode_inverse
huffman@35810
  1658
  Nat_Int_Bij.surj_nat_to_int_bij ~> surj_int_encode
huffman@35810
  1659
  Nat_Int_Bij.surj_int_to_nat_bij ~> surj_int_decode
huffman@35810
  1660
  Nat_Int_Bij.inj_nat_to_int_bij  ~> inj_int_encode
huffman@35810
  1661
  Nat_Int_Bij.inj_int_to_nat_bij  ~> inj_int_decode
huffman@35810
  1662
  Nat_Int_Bij.bij_nat_to_int_bij  ~> bij_int_encode
huffman@35810
  1663
  Nat_Int_Bij.bij_int_to_nat_bij  ~> bij_int_decode
huffman@35810
  1664
blanchet@36929
  1665
* Sledgehammer:
blanchet@36929
  1666
  - Renamed ATP commands:
blanchet@36929
  1667
    atp_info     ~> sledgehammer running_atps
blanchet@36929
  1668
    atp_kill     ~> sledgehammer kill_atps
blanchet@36929
  1669
    atp_messages ~> sledgehammer messages
blanchet@36929
  1670
    atp_minimize ~> sledgehammer minimize
blanchet@36929
  1671
    print_atps   ~> sledgehammer available_atps
blanchet@36929
  1672
    INCOMPATIBILITY.
blanchet@36929
  1673
  - Added user's manual ("isabelle doc sledgehammer").
blanchet@36929
  1674
  - Added option syntax and "sledgehammer_params" to customize
blanchet@36929
  1675
    Sledgehammer's behavior.  See the manual for details.
blanchet@36929
  1676
  - Modified the Isar proof reconstruction code so that it produces
blanchet@36929
  1677
    direct proofs rather than proofs by contradiction.  (This feature
blanchet@36929
  1678
    is still experimental.)
blanchet@36929
  1679
  - Made Isar proof reconstruction work for SPASS, remote ATPs, and in
blanchet@36929
  1680
    full-typed mode.
blanchet@36929
  1681
  - Added support for TPTP syntax for SPASS via the "spass_tptp" ATP.
blanchet@36929
  1682
blanchet@36928
  1683
* Nitpick:
blanchet@36928
  1684
  - Added and implemented "binary_ints" and "bits" options.
blanchet@36928
  1685
  - Added "std" option and implemented support for nonstandard models.
blanchet@36928
  1686
  - Added and implemented "finitize" option to improve the precision
blanchet@36928
  1687
    of infinite datatypes based on a monotonicity analysis.
blanchet@36928
  1688
  - Added support for quotient types.
blanchet@36928
  1689
  - Added support for "specification" and "ax_specification"
blanchet@36928
  1690
    constructs.
blanchet@36928
  1691
  - Added support for local definitions (for "function" and
blanchet@36928
  1692
    "termination" proofs).
blanchet@36928
  1693
  - Added support for term postprocessors.
blanchet@36928
  1694
  - Optimized "Multiset.multiset" and "FinFun.finfun".
blanchet@36928
  1695
  - Improved efficiency of "destroy_constrs" optimization.
blanchet@36928
  1696
  - Fixed soundness bugs related to "destroy_constrs" optimization and
blanchet@36928
  1697
    record getters.
blanchet@37272
  1698
  - Fixed soundness bug related to higher-order constructors.
blanchet@37272
  1699
  - Fixed soundness bug when "full_descrs" is enabled.
blanchet@36928
  1700
  - Improved precision of set constructs.
blanchet@37260
  1701
  - Added "atoms" option.
blanchet@36928
  1702
  - Added cache to speed up repeated Kodkod invocations on the same
blanchet@36928
  1703
    problems.
blanchet@36928
  1704
  - Renamed "MiniSatJNI", "zChaffJNI", "BerkMinAlloy", and
blanchet@36928
  1705
    "SAT4JLight" to "MiniSat_JNI", "zChaff_JNI", "BerkMin_Alloy", and
blanchet@36928
  1706
    "SAT4J_Light".  INCOMPATIBILITY.
blanchet@36928
  1707
  - Removed "skolemize", "uncurry", "sym_break", "flatten_prop",
blanchet@36928
  1708
    "sharing_depth", and "show_skolems" options.  INCOMPATIBILITY.
blanchet@37264
  1709
  - Removed "nitpick_intro" attribute.  INCOMPATIBILITY.
blanchet@36928
  1710
berghofe@37361
  1711
* Method "induct" now takes instantiations of the form t, where t is not
berghofe@37361
  1712
  a variable, as a shorthand for "x == t", where x is a fresh variable.
berghofe@37361
  1713
  If this is not intended, t has to be enclosed in parentheses.
berghofe@37361
  1714
  By default, the equalities generated by definitional instantiations
berghofe@37361
  1715
  are pre-simplified, which may cause parameters of inductive cases
berghofe@37361
  1716
  to disappear, or may even delete some of the inductive cases.
berghofe@37361
  1717
  Use "induct (no_simp)" instead of "induct" to restore the old
berghofe@37361
  1718
  behaviour. The (no_simp) option is also understood by the "cases"
berghofe@37361
  1719
  and "nominal_induct" methods, which now perform pre-simplification, too.
berghofe@37361
  1720
  INCOMPATIBILITY.
berghofe@37361
  1721
haftmann@33993
  1722
huffman@36828
  1723
*** HOLCF ***
huffman@36828
  1724
huffman@36828
  1725
* Variable names in lemmas generated by the domain package have
huffman@36828
  1726
changed; the naming scheme is now consistent with the HOL datatype
huffman@36828
  1727
package.  Some proof scripts may be affected, INCOMPATIBILITY.
huffman@36828
  1728
huffman@36828
  1729
* The domain package no longer defines the function "foo_copy" for
huffman@36828
  1730
recursive domain "foo".  The reach lemma is now stated directly in
huffman@36828
  1731
terms of "foo_take".  Lemmas and proofs that mention "foo_copy" must
huffman@36828
  1732
be reformulated in terms of "foo_take", INCOMPATIBILITY.
huffman@36828
  1733
huffman@36828
  1734
* Most definedness lemmas generated by the domain package (previously
huffman@36828
  1735
of the form "x ~= UU ==> foo$x ~= UU") now have an if-and-only-if form
huffman@36828
  1736
like "foo$x = UU <-> x = UU", which works better as a simp rule.
wenzelm@37351
  1737
Proofs that used definedness lemmas as intro rules may break,
huffman@36828
  1738
potential INCOMPATIBILITY.
huffman@36828
  1739
huffman@36828
  1740
* Induction and casedist rules generated by the domain package now
huffman@36828
  1741
declare proper case_names (one called "bottom", and one named for each
huffman@36828
  1742
constructor).  INCOMPATIBILITY.
huffman@36828
  1743
huffman@36828
  1744
* For mutually-recursive domains, separate "reach" and "take_lemma"
huffman@36828
  1745
rules are generated for each domain, INCOMPATIBILITY.
huffman@36828
  1746
huffman@36828
  1747
  foo_bar.reach       ~> foo.reach  bar.reach
huffman@36828
  1748
  foo_bar.take_lemmas ~> foo.take_lemma  bar.take_lemma
huffman@36828
  1749
huffman@36828
  1750
* Some lemmas generated by the domain package have been renamed for
huffman@36828
  1751
consistency with the datatype package, INCOMPATIBILITY.
huffman@36828
  1752
huffman@36828
  1753
  foo.ind        ~> foo.induct
huffman@36828
  1754
  foo.finite_ind ~> foo.finite_induct
huffman@36828
  1755
  foo.coind      ~> foo.coinduct
huffman@36828
  1756
  foo.casedist   ~> foo.exhaust
huffman@36828
  1757
  foo.exhaust    ~> foo.nchotomy
huffman@36828
  1758
huffman@36828
  1759
* For consistency with other definition packages, the fixrec package
huffman@36828
  1760
now generates qualified theorem names, INCOMPATIBILITY.
huffman@36828
  1761
huffman@36828
  1762
  foo_simps  ~> foo.simps
huffman@36828
  1763
  foo_unfold ~> foo.unfold
huffman@36828
  1764
  foo_induct ~> foo.induct
huffman@36828
  1765
huffman@37087
  1766
* The "fixrec_simp" attribute has been removed.  The "fixrec_simp"
huffman@37087
  1767
method and internal fixrec proofs now use the default simpset instead.
huffman@37087
  1768
INCOMPATIBILITY.
huffman@37087
  1769
huffman@36828
  1770
* The "contlub" predicate has been removed.  Proof scripts should use
huffman@36828
  1771
lemma contI2 in place of monocontlub2cont, INCOMPATIBILITY.
huffman@36828
  1772
huffman@36828
  1773
* The "admw" predicate has been removed, INCOMPATIBILITY.
huffman@36828
  1774
huffman@36828
  1775
* The constants cpair, cfst, and csnd have been removed in favor of
huffman@36828
  1776
Pair, fst, and snd from Isabelle/HOL, INCOMPATIBILITY.
huffman@36828
  1777
huffman@36828
  1778
haftmann@33993
  1779
*** ML ***
haftmann@33993
  1780
wenzelm@37351
  1781
* Antiquotations for basic formal entities:
wenzelm@37351
  1782
wenzelm@37351
  1783
    @{class NAME}         -- type class
wenzelm@37351
  1784
    @{class_syntax NAME}  -- syntax representation of the above
wenzelm@37351
  1785
wenzelm@37351
  1786
    @{type_name NAME}     -- logical type
wenzelm@37351
  1787
    @{type_abbrev NAME}   -- type abbreviation
wenzelm@37351
  1788
    @{nonterminal NAME}   -- type of concrete syntactic category
wenzelm@37351
  1789
    @{type_syntax NAME}   -- syntax representation of any of the above
wenzelm@37351
  1790
wenzelm@37351
  1791
    @{const_name NAME}    -- logical constant (INCOMPATIBILITY)
wenzelm@37351
  1792
    @{const_abbrev NAME}  -- abbreviated constant
wenzelm@37351
  1793
    @{const_syntax NAME}  -- syntax representation of any of the above
wenzelm@37351
  1794
wenzelm@37351
  1795
* Antiquotation @{syntax_const NAME} ensures that NAME refers to a raw
wenzelm@37351
  1796
syntax constant (cf. 'syntax' command).
wenzelm@37351
  1797
wenzelm@37351
  1798
* Antiquotation @{make_string} inlines a function to print arbitrary
wenzelm@37351
  1799
values similar to the ML toplevel.  The result is compiler dependent
wenzelm@37351
  1800
and may fall back on "?" in certain situations.
wenzelm@37351
  1801
wenzelm@37351
  1802
* Diagnostic commands 'ML_val' and 'ML_command' may refer to
wenzelm@37351
  1803
antiquotations @{Isar.state} and @{Isar.goal}.  This replaces impure
wenzelm@37351
  1804
Isar.state() and Isar.goal(), which belong to the old TTY loop and do
wenzelm@37351
  1805
not work with the asynchronous Isar document model.
wenzelm@37351
  1806
wenzelm@37351
  1807
* Configuration options now admit dynamic default values, depending on
wenzelm@37351
  1808
the context or even global references.
wenzelm@37351
  1809
wenzelm@37351
  1810
* SHA1.digest digests strings according to SHA-1 (see RFC 3174).  It
wenzelm@37351
  1811
uses an efficient external library if available (for Poly/ML).
wenzelm@37351
  1812
wenzelm@37144
  1813
* Renamed some important ML structures, while keeping the old names
wenzelm@37144
  1814
for some time as aliases within the structure Legacy:
wenzelm@37144
  1815
wenzelm@37144
  1816
  OuterKeyword  ~>  Keyword
wenzelm@37144
  1817
  OuterLex      ~>  Token
wenzelm@37144
  1818
  OuterParse    ~>  Parse
wenzelm@37144
  1819
  OuterSyntax   ~>  Outer_Syntax
wenzelm@37216
  1820
  PrintMode     ~>  Print_Mode
wenzelm@37144
  1821
  SpecParse     ~>  Parse_Spec
wenzelm@37216
  1822
  ThyInfo       ~>  Thy_Info
wenzelm@37216
  1823
  ThyLoad       ~>  Thy_Load
wenzelm@37216
  1824
  ThyOutput     ~>  Thy_Output
wenzelm@37145
  1825
  TypeInfer     ~>  Type_Infer
wenzelm@37144
  1826
wenzelm@37144
  1827
Note that "open Legacy" simplifies porting of sources, but forgetting
wenzelm@37144
  1828
to remove it again will complicate porting again in the future.
wenzelm@37144
  1829
wenzelm@37144
  1830
* Most operations that refer to a global context are named
wenzelm@37144
  1831
accordingly, e.g. Simplifier.global_context or
wenzelm@37144
  1832
ProofContext.init_global.  There are some situations where a global
wenzelm@37144
  1833
context actually works, but under normal circumstances one needs to
wenzelm@37144
  1834
pass the proper local context through the code!
wenzelm@37144
  1835
wenzelm@37144
  1836
* Discontinued old TheoryDataFun with its copy/init operation -- data
wenzelm@37144
  1837
needs to be pure.  Functor Theory_Data_PP retains the traditional
wenzelm@37144
  1838
Pretty.pp argument to merge, which is absent in the standard
wenzelm@37144
  1839
Theory_Data version.
wenzelm@36429
  1840
wenzelm@37144
  1841
* Sorts.certify_sort and derived "cert" operations for types and terms
wenzelm@37144
  1842
no longer minimize sorts.  Thus certification at the boundary of the
wenzelm@37144
  1843
inference kernel becomes invariant under addition of class relations,
wenzelm@37144
  1844
which is an important monotonicity principle.  Sorts are now minimized
wenzelm@37144
  1845
in the syntax layer only, at the boundary between the end-user and the
wenzelm@37144
  1846
system.  Subtle INCOMPATIBILITY, may have to use Sign.minimize_sort
wenzelm@37144
  1847
explicitly in rare situations.
wenzelm@37144
  1848
wenzelm@35021
  1849
* Renamed old-style Drule.standard to Drule.export_without_context, to
wenzelm@35021
  1850
emphasize that this is in no way a standard operation.
wenzelm@35021
  1851
INCOMPATIBILITY.
wenzelm@35021
  1852
wenzelm@34076
  1853
* Subgoal.FOCUS (and variants): resulting goal state is normalized as
wenzelm@34076
  1854
usual for resolution.  Rare INCOMPATIBILITY.
wenzelm@34076
  1855
wenzelm@35845
  1856
* Renamed varify/unvarify operations to varify_global/unvarify_global
wenzelm@35845
  1857
to emphasize that these only work in a global situation (which is
wenzelm@35845
  1858
quite rare).
wenzelm@35845
  1859
wenzelm@37144
  1860
* Curried take and drop in library.ML; negative length is interpreted
wenzelm@37144
  1861
as infinity (as in chop).  Subtle INCOMPATIBILITY.
wenzelm@36961
  1862
wenzelm@37351
  1863
* Proof terms: type substitutions on proof constants now use canonical
wenzelm@37351
  1864
order of type variables.  INCOMPATIBILITY for tools working with proof
wenzelm@37351
  1865
terms.
wenzelm@37351
  1866
wenzelm@37351
  1867
* Raw axioms/defs may no longer carry sort constraints, and raw defs
wenzelm@37351
  1868
may no longer carry premises.  User-level specifications are
wenzelm@37351
  1869
transformed accordingly by Thm.add_axiom/add_def.
wenzelm@37351
  1870
haftmann@33993
  1871
wenzelm@34238
  1872
*** System ***
wenzelm@34238
  1873
wenzelm@34238
  1874
* Discontinued special HOL_USEDIR_OPTIONS for the main HOL image;
wenzelm@34238
  1875
ISABELLE_USEDIR_OPTIONS applies uniformly to all sessions.  Note that
wenzelm@34238
  1876
proof terms are enabled unconditionally in the new HOL-Proofs image.
wenzelm@34238
  1877
wenzelm@34255
  1878
* Discontinued old ISABELLE and ISATOOL environment settings (legacy
wenzelm@34255
  1879
feature since Isabelle2009).  Use ISABELLE_PROCESS and ISABELLE_TOOL,
wenzelm@34255
  1880
respectively.
wenzelm@34255
  1881
wenzelm@36201
  1882
* Old lib/scripts/polyml-platform is superseded by the
wenzelm@36201
  1883
ISABELLE_PLATFORM setting variable, which defaults to the 32 bit
wenzelm@36201
  1884
variant, even on a 64 bit machine.  The following example setting
wenzelm@36201
  1885
prefers 64 bit if available:
wenzelm@36201
  1886
wenzelm@36201
  1887
  ML_PLATFORM="${ISABELLE_PLATFORM64:-$ISABELLE_PLATFORM}"
wenzelm@36201
  1888
wenzelm@37218
  1889
* The preliminary Isabelle/jEdit application demonstrates the emerging
wenzelm@37218
  1890
Isabelle/Scala layer for advanced prover interaction and integration.
wenzelm@37218
  1891
See src/Tools/jEdit or "isabelle jedit" provided by the properly built
wenzelm@37218
  1892
component.
wenzelm@37218
  1893
wenzelm@37375
  1894
* "IsabelleText" is a Unicode font derived from Bitstream Vera Mono
wenzelm@37375
  1895
and Bluesky TeX fonts.  It provides the usual Isabelle symbols,
wenzelm@37375
  1896
similar to the default assignment of the document preparation system
wenzelm@37375
  1897
(cf. isabellesym.sty).  The Isabelle/Scala class Isabelle_System
wenzelm@37375
  1898
provides some operations for direct access to the font without asking
wenzelm@37375
  1899
the user for manual installation.
wenzelm@37375
  1900
wenzelm@34238
  1901
haftmann@33993
  1902
wenzelm@33842
  1903
New in Isabelle2009-1 (December 2009)
wenzelm@33842
  1904
-------------------------------------
wenzelm@30904
  1905
wenzelm@31547
  1906
*** General ***
wenzelm@31547
  1907
wenzelm@31547
  1908
* Discontinued old form of "escaped symbols" such as \\<forall>.  Only
wenzelm@31547
  1909
one backslash should be used, even in ML sources.
wenzelm@31547
  1910
wenzelm@31547
  1911
haftmann@30951
  1912
*** Pure ***
haftmann@30951
  1913
ballarin@32846
  1914
* Locale interpretation propagates mixins along the locale hierarchy.
ballarin@32846
  1915
The currently only available mixins are the equations used to map
ballarin@32846
  1916
local definitions to terms of the target domain of an interpretation.
ballarin@32846
  1917
wenzelm@33842
  1918
* Reactivated diagnostic command 'print_interps'.  Use "print_interps
wenzelm@33842
  1919
loc" to print all interpretations of locale "loc" in the theory.
wenzelm@33842
  1920
Interpretations in proofs are not shown.
ballarin@32846
  1921
ballarin@32983
  1922
* Thoroughly revised locales tutorial.  New section on conditional
ballarin@32983
  1923
interpretation.
ballarin@32983
  1924
wenzelm@33843
  1925
* On instantiation of classes, remaining undefined class parameters
wenzelm@33843
  1926
are formally declared.  INCOMPATIBILITY.
wenzelm@33843
  1927
haftmann@30951
  1928
wenzelm@33842
  1929
*** Document preparation ***
wenzelm@33842
  1930
wenzelm@33842
  1931
* New generalized style concept for printing terms: @{foo (style) ...}
wenzelm@33842
  1932
instead of @{foo_style style ...}  (old form is still retained for
wenzelm@33842
  1933
backward compatibility).  Styles can be also applied for
wenzelm@33842
  1934
antiquotations prop, term_type and typeof.
haftmann@32891
  1935
haftmann@32891
  1936
haftmann@30930
  1937
*** HOL ***
haftmann@30930
  1938
wenzelm@33842
  1939
* New proof method "smt" for a combination of first-order logic with
wenzelm@33842
  1940
equality, linear and nonlinear (natural/integer/real) arithmetic, and
wenzelm@33842
  1941
fixed-size bitvectors; there is also basic support for higher-order
wenzelm@33842
  1942
features (esp. lambda abstractions).  It is an incomplete decision
wenzelm@33842
  1943
procedure based on external SMT solvers using the oracle mechanism;
wenzelm@33842
  1944
for the SMT solver Z3, this method is proof-producing.  Certificates
wenzelm@33842
  1945
are provided to avoid calling the external solvers solely for
wenzelm@33842
  1946
re-checking proofs.  Due to a remote SMT service there is no need for
wenzelm@33842
  1947
installing SMT solvers locally.  See src/HOL/SMT.
wenzelm@33842
  1948
wenzelm@33842
  1949
* New commands to load and prove verification conditions generated by
wenzelm@33842
  1950
the Boogie program verifier or derived systems (e.g. the Verifying C
wenzelm@33842
  1951
Compiler (VCC) or Spec#).  See src/HOL/Boogie.
wenzelm@33842
  1952
wenzelm@33842
  1953
* New counterexample generator tool 'nitpick' based on the Kodkod
wenzelm@33842
  1954
relational model finder.  See src/HOL/Tools/Nitpick and
wenzelm@33842
  1955
src/HOL/Nitpick_Examples.
wenzelm@33842
  1956
haftmann@33860
  1957
* New commands 'code_pred' and 'values' to invoke the predicate
haftmann@33860
  1958
compiler and to enumerate values of inductive predicates.
haftmann@33860
  1959
haftmann@33860
  1960
* A tabled implementation of the reflexive transitive closure.
haftmann@33860
  1961
haftmann@33860
  1962
* New implementation of quickcheck uses generic code generator;
haftmann@33860
  1963
default generators are provided for all suitable HOL types, records
haftmann@33860
  1964
and datatypes.  Old quickcheck can be re-activated importing theory
haftmann@33860
  1965
Library/SML_Quickcheck.
haftmann@33860
  1966
wenzelm@33843
  1967
* New testing tool Mirabelle for automated proof tools.  Applies
wenzelm@33843
  1968
several tools and tactics like sledgehammer, metis, or quickcheck, to
wenzelm@33843
  1969
every proof step in a theory.  To be used in batch mode via the
wenzelm@33843
  1970
"mirabelle" utility.
wenzelm@33843
  1971
wenzelm@33843
  1972
* New proof method "sos" (sum of squares) for nonlinear real
wenzelm@33843
  1973
arithmetic (originally due to John Harison). It requires theory
wenzelm@33843
  1974
Library/Sum_Of_Squares.  It is not a complete decision procedure but
wenzelm@33843
  1975
works well in practice on quantifier-free real arithmetic with +, -,
wenzelm@33843
  1976
*, ^, =, <= and <, i.e. boolean combinations of equalities and
wenzelm@33843
  1977
inequalities between polynomials.  It makes use of external
wenzelm@33843
  1978
semidefinite programming solvers.  Method "sos" generates a
wenzelm@33843
  1979
certificate that can be pasted into the proof thus avoiding the need
wenzelm@33843
  1980
to call an external tool every time the proof is checked.  See
wenzelm@33843
  1981
src/HOL/Library/Sum_Of_Squares.
wenzelm@33843
  1982
wenzelm@33843
  1983
* New method "linarith" invokes existing linear arithmetic decision
wenzelm@33843
  1984
procedure only.
wenzelm@33843
  1985
wenzelm@33843
  1986
* New command 'atp_minimal' reduces result produced by Sledgehammer.
wenzelm@33843
  1987
wenzelm@33843
  1988
* New Sledgehammer option "Full Types" in Proof General settings menu.
wenzelm@33843
  1989
Causes full type information to be output to the ATPs.  This slows
wenzelm@33843
  1990
ATPs down considerably but eliminates a source of unsound "proofs"
wenzelm@33843
  1991
that fail later.
wenzelm@33843
  1992
wenzelm@33843
  1993
* New method "metisFT": A version of metis that uses full type
wenzelm@33843
  1994
information in order to avoid failures of proof reconstruction.
wenzelm@33843
  1995
wenzelm@33843
  1996
* New evaluator "approximate" approximates an real valued term using
wenzelm@33843
  1997
the same method as the approximation method.
wenzelm@33843
  1998
wenzelm@33843
  1999
* Method "approximate" now supports arithmetic expressions as
wenzelm@33843
  2000
boundaries of intervals and implements interval splitting and Taylor
wenzelm@33843
  2001
series expansion.
wenzelm@33843
  2002
wenzelm@33843
  2003
* ML antiquotation @{code_datatype} inserts definition of a datatype
wenzelm@33843
  2004
generated by the code generator; e.g. see src/HOL/Predicate.thy.
wenzelm@33843
  2005
haftmann@33860
  2006
* New theory SupInf of the supremum and infimum operators for sets of
haftmann@33860
  2007
reals.
haftmann@33860
  2008
haftmann@33860
  2009
* New theory Probability, which contains a development of measure
haftmann@33860
  2010
theory, eventually leading to Lebesgue integration and probability.
haftmann@33860
  2011
haftmann@33860
  2012
* Extended Multivariate Analysis to include derivation and Brouwer's
haftmann@33860
  2013
fixpoint theorem.
wenzelm@33843
  2014
wenzelm@33842
  2015
* Reorganization of number theory, INCOMPATIBILITY:
wenzelm@33873
  2016
  - new number theory development for nat and int, in theories Divides
wenzelm@33873
  2017
    and GCD as well as in new session Number_Theory
wenzelm@33873
  2018
  - some constants and facts now suffixed with _nat and _int
wenzelm@33873
  2019
    accordingly
wenzelm@33873
  2020
  - former session NumberTheory now named Old_Number_Theory, including
wenzelm@33873
  2021
    theories Legacy_GCD and Primes (prefer Number_Theory if possible)
wenzelm@33842
  2022
  - moved theory Pocklington from src/HOL/Library to
wenzelm@33842
  2023
    src/HOL/Old_Number_Theory
haftmann@32479
  2024
wenzelm@33873
  2025
* Theory GCD includes functions Gcd/GCD and Lcm/LCM for the gcd and
wenzelm@33873
  2026
lcm of finite and infinite sets. It is shown that they form a complete
haftmann@32600
  2027
lattice.
haftmann@32600
  2028
haftmann@32600
  2029
* Class semiring_div requires superclass no_zero_divisors and proof of
haftmann@32600
  2030
div_mult_mult1; theorems div_mult_mult1, div_mult_mult2,
haftmann@32600
  2031
div_mult_mult1_if, div_mult_mult1 and div_mult_mult2 have been
haftmann@32600
  2032
generalized to class semiring_div, subsuming former theorems
haftmann@32600
  2033
zdiv_zmult_zmult1, zdiv_zmult_zmult1_if, zdiv_zmult_zmult1 and
haftmann@32600
  2034
zdiv_zmult_zmult2.  div_mult_mult1 is now [simp] by default.
haftmann@32600
  2035
INCOMPATIBILITY.
haftmann@32600
  2036
haftmann@32588
  2037
* Refinements to lattice classes and sets:
haftmann@32064
  2038
  - less default intro/elim rules in locale variant, more default
haftmann@32064
  2039
    intro/elim rules in class variant: more uniformity
wenzelm@33842
  2040
  - lemma ge_sup_conv renamed to le_sup_iff, in accordance with
wenzelm@33842
  2041
    le_inf_iff
wenzelm@33842
  2042
  - dropped lemma alias inf_ACI for inf_aci (same for sup_ACI and
wenzelm@33842
  2043
    sup_aci)
haftmann@32064
  2044
  - renamed ACI to inf_sup_aci
haftmann@32600
  2045
  - new class "boolean_algebra"
wenzelm@33842
  2046
  - class "complete_lattice" moved to separate theory
haftmann@33860
  2047
    "Complete_Lattice"; corresponding constants (and abbreviations)
wenzelm@33842
  2048
    renamed and with authentic syntax:
haftmann@33860
  2049
    Set.Inf ~>    Complete_Lattice.Inf
haftmann@33860
  2050
    Set.Sup ~>    Complete_Lattice.Sup
haftmann@33860
  2051
    Set.INFI ~>   Complete_Lattice.INFI
haftmann@33860
  2052
    Set.SUPR ~>   Complete_Lattice.SUPR
haftmann@33860
  2053
    Set.Inter ~>  Complete_Lattice.Inter
haftmann@33860
  2054
    Set.Union ~>  Complete_Lattice.Union
haftmann@33860
  2055
    Set.INTER ~>  Complete_Lattice.INTER
haftmann@33860
  2056
    Set.UNION ~>  Complete_Lattice.UNION
haftmann@32600
  2057
  - authentic syntax for
haftmann@32600
  2058
    Set.Pow
haftmann@32600
  2059
    Set.image
haftmann@32588
  2060
  - mere abbreviations:
haftmann@32588
  2061
    Set.empty               (for bot)
haftmann@32588
  2062
    Set.UNIV                (for top)
haftmann@33860
  2063
    Set.inter               (for inf, formerly Set.Int)
haftmann@33860
  2064
    Set.union               (for sup, formerly Set.Un)
haftmann@32588
  2065
    Complete_Lattice.Inter  (for Inf)
haftmann@32588
  2066
    Complete_Lattice.Union  (for Sup)
haftmann@32606
  2067
    Complete_Lattice.INTER  (for INFI)
haftmann@32606
  2068
    Complete_Lattice.UNION  (for SUPR)
haftmann@32600
  2069
  - object-logic definitions as far as appropriate
haftmann@32217
  2070
haftmann@32691
  2071
INCOMPATIBILITY.  Care is required when theorems Int_subset_iff or
wenzelm@33842
  2072
Un_subset_iff are explicitly deleted as default simp rules; then also
wenzelm@33842
  2073
their lattice counterparts le_inf_iff and le_sup_iff have to be
haftmann@32691
  2074
deleted to achieve the desired effect.
haftmann@32064
  2075
wenzelm@33842
  2076
* Rules inf_absorb1, inf_absorb2, sup_absorb1, sup_absorb2 are no simp
wenzelm@33842
  2077
rules by default any longer; the same applies to min_max.inf_absorb1
wenzelm@33842
  2078
etc.  INCOMPATIBILITY.
wenzelm@33842
  2079
wenzelm@33842
  2080
* Rules sup_Int_eq and sup_Un_eq are no longer declared as
wenzelm@33842
  2081
pred_set_conv by default.  INCOMPATIBILITY.
wenzelm@33842
  2082
wenzelm@33842
  2083
* Power operations on relations and functions are now one dedicated
haftmann@32706
  2084
constant "compow" with infix syntax "^^".  Power operation on
wenzelm@31547
  2085
multiplicative monoids retains syntax "^" and is now defined generic
wenzelm@31547
  2086
in class power.  INCOMPATIBILITY.
wenzelm@31547
  2087
wenzelm@33842
  2088
* Relation composition "R O S" now has a more standard argument order:
wenzelm@33842
  2089
"R O S = {(x, z). EX y. (x, y) : R & (y, z) : S}".  INCOMPATIBILITY,
wenzelm@33842
  2090
rewrite propositions with "S O R" --> "R O S". Proofs may occasionally
wenzelm@33842
  2091
break, since the O_assoc rule was not rewritten like this.  Fix using
wenzelm@33842
  2092
O_assoc[symmetric].  The same applies to the curried version "R OO S".
wenzelm@32427
  2093
nipkow@33057
  2094
* Function "Inv" is renamed to "inv_into" and function "inv" is now an
wenzelm@33842
  2095
abbreviation for "inv_into UNIV".  Lemmas are renamed accordingly.
nipkow@32988
  2096
INCOMPATIBILITY.
nipkow@32988
  2097
haftmann@33860
  2098
* Most rules produced by inductive and datatype package have mandatory
haftmann@33860
  2099
prefixes.  INCOMPATIBILITY.
nipkow@31790
  2100
wenzelm@33842
  2101
* Changed "DERIV_intros" to a dynamic fact, which can be augmented by
wenzelm@33842
  2102
the attribute of the same name.  Each of the theorems in the list
wenzelm@33842
  2103
DERIV_intros assumes composition with an additional function and
wenzelm@33842
  2104
matches a variable to the derivative, which has to be solved by the
wenzelm@33842
  2105
Simplifier.  Hence (auto intro!: DERIV_intros) computes the derivative
wenzelm@33873
  2106
of most elementary terms.  Former Maclauren.DERIV_tac and
wenzelm@33873
  2107
Maclauren.deriv_tac should be replaced by (auto intro!: DERIV_intros).
wenzelm@33873
  2108
INCOMPATIBILITY.
haftmann@33860
  2109
haftmann@33860
  2110
* Code generator attributes follow the usual underscore convention:
haftmann@33860
  2111
    code_unfold     replaces    code unfold
haftmann@33860
  2112
    code_post       replaces    code post
haftmann@33860
  2113
    etc.
haftmann@33860
  2114
  INCOMPATIBILITY.
wenzelm@31900
  2115
krauss@33471
  2116
* Renamed methods:
krauss@33471
  2117
    sizechange -> size_change
krauss@33471
  2118
    induct_scheme -> induction_schema
haftmann@33860
  2119
  INCOMPATIBILITY.
nipkow@33673
  2120
wenzelm@33843
  2121
* Discontinued abbreviation "arbitrary" of constant "undefined".
wenzelm@33843
  2122
INCOMPATIBILITY, use "undefined" directly.
wenzelm@33843
  2123
haftmann@33860
  2124
* Renamed theorems:
haftmann@33860
  2125
    Suc_eq_add_numeral_1 -> Suc_eq_plus1
haftmann@33860
  2126
    Suc_eq_add_numeral_1_left -> Suc_eq_plus1_left
haftmann@33860
  2127
    Suc_plus1 -> Suc_eq_plus1
haftmann@33860
  2128
    *anti_sym -> *antisym*
haftmann@33860
  2129
    vector_less_eq_def -> vector_le_def
haftmann@33860
  2130
  INCOMPATIBILITY.
haftmann@33860
  2131
haftmann@33860
  2132
* Added theorem List.map_map as [simp].  Removed List.map_compose.
haftmann@33860
  2133
INCOMPATIBILITY.
haftmann@33860
  2134
haftmann@33860
  2135
* Removed predicate "M hassize n" (<--> card M = n & finite M).
haftmann@33860
  2136
INCOMPATIBILITY.
haftmann@33860
  2137
hoelzl@31812
  2138
huffman@33825
  2139
*** HOLCF ***
huffman@33825
  2140
wenzelm@33842
  2141
* Theory Representable defines a class "rep" of domains that are
wenzelm@33842
  2142
representable (via an ep-pair) in the universal domain type "udom".
huffman@33825
  2143
Instances are provided for all type constructors defined in HOLCF.
huffman@33825
  2144
huffman@33825
  2145
* The 'new_domain' command is a purely definitional version of the
huffman@33825
  2146
domain package, for representable domains.  Syntax is identical to the
huffman@33825
  2147
old domain package.  The 'new_domain' package also supports indirect
huffman@33825
  2148
recursion using previously-defined type constructors.  See
wenzelm@33842
  2149
src/HOLCF/ex/New_Domain.thy for examples.
wenzelm@33842
  2150
wenzelm@33842
  2151
* Method "fixrec_simp" unfolds one step of a fixrec-defined constant
huffman@33825
  2152
on the left-hand side of an equation, and then performs
huffman@33825
  2153
simplification.  Rewriting is done using rules declared with the
wenzelm@33842
  2154
"fixrec_simp" attribute.  The "fixrec_simp" method is intended as a
wenzelm@33842
  2155
replacement for "fixpat"; see src/HOLCF/ex/Fixrec_ex.thy for examples.
huffman@33825
  2156
huffman@33825
  2157
* The pattern-match compiler in 'fixrec' can now handle constructors
huffman@33825
  2158
with HOL function types.  Pattern-match combinators for the Pair
huffman@33825
  2159
constructor are pre-configured.
huffman@33825
  2160
huffman@33825
  2161
* The 'fixrec' package now produces better fixed-point induction rules
huffman@33825
  2162
for mutually-recursive definitions:  Induction rules have conclusions
huffman@33825
  2163
of the form "P foo bar" instead of "P <foo, bar>".
huffman@33825
  2164
huffman@33825
  2165
* The constant "sq_le" (with infix syntax "<<" or "\<sqsubseteq>") has
huffman@33825
  2166
been renamed to "below".  The name "below" now replaces "less" in many
wenzelm@33842
  2167
theorem names.  (Legacy theorem names using "less" are still supported
wenzelm@33842
  2168
as well.)
huffman@33825
  2169
huffman@33825
  2170
* The 'fixrec' package now supports "bottom patterns".  Bottom
huffman@33825
  2171
patterns can be used to generate strictness rules, or to make
huffman@33825
  2172
functions more strict (much like the bang-patterns supported by the
wenzelm@33873
  2173
Glasgow Haskell Compiler).  See src/HOLCF/ex/Fixrec_ex.thy for
wenzelm@33873
  2174
examples.
huffman@33825
  2175
huffman@33825
  2176
wenzelm@31304
  2177
*** ML ***
wenzelm@31304
  2178
wenzelm@33843
  2179
* Support for Poly/ML 5.3.0, with improved reporting of compiler
wenzelm@33843
  2180
errors and run-time exceptions, including detailed source positions.
wenzelm@33843
  2181
wenzelm@33843
  2182
* Structure Name_Space (formerly NameSpace) now manages uniquely
wenzelm@33843
  2183
identified entries, with some additional information such as source
wenzelm@33843
  2184
position, logical grouping etc.
wenzelm@33843
  2185
wenzelm@33524
  2186
* Theory and context data is now introduced by the simplified and
wenzelm@33524
  2187
modernized functors Theory_Data, Proof_Data, Generic_Data.  Data needs
wenzelm@33524
  2188
to be pure, but the old TheoryDataFun for mutable data (with explicit
wenzelm@33524
  2189
copy operation) is still available for some time.
wenzelm@33524
  2190
wenzelm@32742
  2191
* Structure Synchronized (cf. src/Pure/Concurrent/synchronized.ML)
wenzelm@32742
  2192
provides a high-level programming interface to synchronized state
wenzelm@32742
  2193
variables with atomic update.  This works via pure function
wenzelm@32742
  2194
application within a critical section -- its runtime should be as
wenzelm@32742
  2195
short as possible; beware of deadlocks if critical code is nested,
wenzelm@32742
  2196
either directly or indirectly via other synchronized variables!
wenzelm@32742
  2197
wenzelm@32742
  2198
* Structure Unsynchronized (cf. src/Pure/ML-Systems/unsynchronized.ML)
wenzelm@32742
  2199
wraps raw ML references, explicitly indicating their non-thread-safe
wenzelm@32742
  2200
behaviour.  The Isar toplevel keeps this structure open, to
wenzelm@32742
  2201
accommodate Proof General as well as quick and dirty interactive
wenzelm@32742
  2202
experiments with references.
wenzelm@32742
  2203
wenzelm@32365
  2204
* PARALLEL_CHOICE and PARALLEL_GOALS provide basic support for
wenzelm@32365
  2205
parallel tactical reasoning.
wenzelm@32365
  2206
wenzelm@32427
  2207
* Tacticals Subgoal.FOCUS, Subgoal.FOCUS_PREMS, Subgoal.FOCUS_PARAMS
wenzelm@32427
  2208
are similar to SUBPROOF, but are slightly more flexible: only the
wenzelm@32427
  2209
specified parts of the subgoal are imported into the context, and the
wenzelm@32427
  2210
body tactic may introduce new subgoals and schematic variables.
wenzelm@32427
  2211
wenzelm@32427
  2212
* Old tactical METAHYPS, which does not observe the proof context, has
wenzelm@32427
  2213
been renamed to Old_Goals.METAHYPS and awaits deletion.  Use SUBPROOF
wenzelm@32427
  2214
or Subgoal.FOCUS etc.
wenzelm@32216
  2215
wenzelm@31971
  2216
* Renamed functor TableFun to Table, and GraphFun to Graph.  (Since
wenzelm@31971
  2217
functors have their own ML name space there is no point to mark them
wenzelm@31971
  2218
separately.)  Minor INCOMPATIBILITY.
wenzelm@31971
  2219
wenzelm@31901
  2220
* Renamed NamedThmsFun to Named_Thms.  INCOMPATIBILITY.
wenzelm@31901
  2221
wenzelm@33842
  2222
* Renamed several structures FooBar to Foo_Bar.  Occasional,
wenzelm@33842
  2223
INCOMPATIBILITY.
wenzelm@33842
  2224
wenzelm@33843
  2225
* Operations of structure Skip_Proof no longer require quick_and_dirty
wenzelm@33843
  2226
mode, which avoids critical setmp.
wenzelm@33843
  2227
wenzelm@31306
  2228
* Eliminated old Attrib.add_attributes, Method.add_methods and related
wenzelm@33842
  2229
combinators for "args".  INCOMPATIBILITY, need to use simplified
wenzelm@31306
  2230
Attrib/Method.setup introduced in Isabelle2009.
wenzelm@31304
  2231
wenzelm@32151
  2232
* Proper context for simpset_of, claset_of, clasimpset_of.  May fall
wenzelm@32151
  2233
back on global_simpset_of, global_claset_of, global_clasimpset_of as
wenzelm@32151
  2234
last resort.  INCOMPATIBILITY.
wenzelm@32151
  2235
wenzelm@32092
  2236
* Display.pretty_thm now requires a proper context (cf. former
wenzelm@32092
  2237
ProofContext.pretty_thm).  May fall back on Display.pretty_thm_global
wenzelm@32092
  2238
or even Display.pretty_thm_without_context as last resort.
wenzelm@32092
  2239
INCOMPATIBILITY.
wenzelm@32092
  2240
wenzelm@32433
  2241
* Discontinued Display.pretty_ctyp/cterm etc.  INCOMPATIBILITY, use
wenzelm@32433
  2242
Syntax.pretty_typ/term directly, preferably with proper context
wenzelm@32433
  2243
instead of global theory.
wenzelm@32433
  2244
wenzelm@31304
  2245
wenzelm@31308
  2246
*** System ***
wenzelm@31308
  2247
wenzelm@33842
  2248
* Further fine tuning of parallel proof checking, scales up to 8 cores
wenzelm@33842
  2249
(max. speedup factor 5.0).  See also Goal.parallel_proofs in ML and
wenzelm@33842
  2250
usedir option -q.
wenzelm@33842
  2251
wenzelm@32326
  2252
* Support for additional "Isabelle components" via etc/components, see
wenzelm@32326
  2253
also the system manual.
wenzelm@32326
  2254
wenzelm@32326
  2255
* The isabelle makeall tool now operates on all components with
wenzelm@32326
  2256
IsaMakefile, not just hardwired "logics".
wenzelm@32326
  2257
wenzelm@33842
  2258
* Removed "compress" option from isabelle-process and isabelle usedir;
wenzelm@33842
  2259
this is always enabled.
kleing@33818
  2260
wenzelm@31308
  2261
* Discontinued support for Poly/ML 4.x versions.
wenzelm@31308
  2262
wenzelm@33842
  2263
* Isabelle tool "wwwfind" provides web interface for 'find_theorems'
wenzelm@33842
  2264
on a given logic image.  This requires the lighttpd webserver and is
wenzelm@33842
  2265
currently supported on Linux only.
wenzelm@32061
  2266
wenzelm@31308
  2267
wenzelm@31304
  2268
wenzelm@30845
  2269
New in Isabelle2009 (April 2009)
wenzelm@30845
  2270
--------------------------------
haftmann@27104
  2271
wenzelm@27599
  2272
*** General ***
wenzelm@27599
  2273
wenzelm@28504
  2274
* Simplified main Isabelle executables, with less surprises on
wenzelm@28504
  2275
case-insensitive file-systems (such as Mac OS).
wenzelm@28504
  2276
wenzelm@28504
  2277
  - The main Isabelle tool wrapper is now called "isabelle" instead of
wenzelm@28504
  2278
    "isatool."
wenzelm@28504
  2279
wenzelm@28504
  2280
  - The former "isabelle" alias for "isabelle-process" has been
wenzelm@28504
  2281
    removed (should rarely occur to regular users).
wenzelm@28504
  2282
wenzelm@28915
  2283
  - The former "isabelle-interface" and its alias "Isabelle" have been
wenzelm@28915
  2284
    removed (interfaces are now regular Isabelle tools).
wenzelm@28504
  2285
wenzelm@28504
  2286
Within scripts and make files, the Isabelle environment variables
wenzelm@28504
  2287
ISABELLE_TOOL and ISABELLE_PROCESS replace old ISATOOL and ISABELLE,
wenzelm@28504
  2288
respectively.  (The latter are still available as legacy feature.)
wenzelm@28504
  2289
wenzelm@28915
  2290
The old isabelle-interface wrapper could react in confusing ways if
wenzelm@28915
  2291
the interface was uninstalled or changed otherwise.  Individual
wenzelm@28915
  2292
interface tool configuration is now more explicit, see also the
wenzelm@28915
  2293
Isabelle system manual.  In particular, Proof General is now available
wenzelm@28915
  2294
via "isabelle emacs".
wenzelm@28504
  2295
wenzelm@28504
  2296
INCOMPATIBILITY, need to adapt derivative scripts.  Users may need to
wenzelm@28504
  2297
purge installed copies of Isabelle executables and re-run "isabelle
wenzelm@28504
  2298
install -p ...", or use symlinks.
wenzelm@28504
  2299
wenzelm@28914
  2300
* The default for ISABELLE_HOME_USER is now ~/.isabelle instead of the
wenzelm@30845
  2301
old ~/isabelle, which was slightly non-standard and apt to cause
wenzelm@30845
  2302
surprises on case-insensitive file-systems (such as Mac OS).
wenzelm@28914
  2303
wenzelm@28914
  2304
INCOMPATIBILITY, need to move existing ~/isabelle/etc,
wenzelm@28914
  2305
~/isabelle/heaps, ~/isabelle/browser_info to the new place.  Special
wenzelm@28914
  2306
care is required when using older releases of Isabelle.  Note that
wenzelm@28914
  2307
ISABELLE_HOME_USER can be changed in Isabelle/etc/settings of any
wenzelm@30845
  2308
Isabelle distribution, in order to use the new ~/.isabelle uniformly.
wenzelm@28914
  2309
wenzelm@29161
  2310
* Proofs of fully specified statements are run in parallel on
wenzelm@30845
  2311
multi-core systems.  A speedup factor of 2.5 to 3.2 can be expected on
wenzelm@30845
  2312
a regular 4-core machine, if the initial heap space is made reasonably
wenzelm@30845
  2313
large (cf. Poly/ML option -H).  (Requires Poly/ML 5.2.1 or later.)
wenzelm@30845
  2314
wenzelm@30845
  2315
* The main reference manuals ("isar-ref", "implementation", and
wenzelm@30845
  2316
"system") have been updated and extended.  Formally checked references
wenzelm@30845
  2317
as hyperlinks are now available uniformly.
wenzelm@30845
  2318
wenzelm@30163
  2319
wenzelm@27599
  2320
*** Pure ***
wenzelm@27599
  2321
wenzelm@30845
  2322
* Complete re-implementation of locales.  INCOMPATIBILITY in several
wenzelm@30845
  2323
respects.  The most important changes are listed below.  See the
wenzelm@30845
  2324
Tutorial on Locales ("locales" manual) for details.
ballarin@29253
  2325
ballarin@29253
  2326
- In locale expressions, instantiation replaces renaming.  Parameters
ballarin@29253
  2327
must be declared in a for clause.  To aid compatibility with previous
ballarin@29253
  2328
parameter inheritance, in locale declarations, parameters that are not
ballarin@29253
  2329
'touched' (instantiation position "_" or omitted) are implicitly added
ballarin@29253
  2330
with their syntax at the beginning of the for clause.
ballarin@29253
  2331
ballarin@29253
  2332
- Syntax from abbreviations and definitions in locales is available in
ballarin@29253
  2333
locale expressions and context elements.  The latter is particularly
ballarin@29253
  2334
useful in locale declarations.
ballarin@29253
  2335
ballarin@29253
  2336
- More flexible mechanisms to qualify names generated by locale
ballarin@29253
  2337
expressions.  Qualifiers (prefixes) may be specified in locale
wenzelm@30728
  2338
expressions, and can be marked as mandatory (syntax: "name!:") or
wenzelm@30728
  2339
optional (syntax "name?:").  The default depends for plain "name:"
wenzelm@30728
  2340
depends on the situation where a locale expression is used: in
wenzelm@30728
  2341
commands 'locale' and 'sublocale' prefixes are optional, in
wenzelm@30845
  2342
'interpretation' and 'interpret' prefixes are mandatory.  The old
wenzelm@30728
  2343
implicit qualifiers derived from the parameter names of a locale are
wenzelm@30728
  2344
no longer generated.
wenzelm@30106
  2345
wenzelm@30845
  2346
- Command "sublocale l < e" replaces "interpretation l < e".  The
wenzelm@30106
  2347
instantiation clause in "interpretation" and "interpret" (square
wenzelm@30106
  2348
brackets) is no longer available.  Use locale expressions.
ballarin@29253
  2349
wenzelm@30845
  2350
- When converting proof scripts, mandatory qualifiers in
wenzelm@30728
  2351
'interpretation' and 'interpret' should be retained by default, even
wenzelm@30845
  2352
if this is an INCOMPATIBILITY compared to former behavior.  In the
wenzelm@30845
  2353
worst case, use the "name?:" form for non-mandatory ones.  Qualifiers
wenzelm@30845
  2354
in locale expressions range over a single locale instance only.
wenzelm@30845
  2355
wenzelm@30845
  2356
- Dropped locale element "includes".  This is a major INCOMPATIBILITY.
wenzelm@30845
  2357
In existing theorem specifications replace the includes element by the
wenzelm@30845
  2358
respective context elements of the included locale, omitting those
wenzelm@30845
  2359
that are already present in the theorem specification.  Multiple
wenzelm@30845
  2360
assume elements of a locale should be replaced by a single one
wenzelm@30845
  2361
involving the locale predicate.  In the proof body, declarations (most
wenzelm@30845
  2362
notably theorems) may be regained by interpreting the respective
wenzelm@30845
  2363
locales in the proof context as required (command "interpret").
wenzelm@30845
  2364
wenzelm@30845
  2365
If using "includes" in replacement of a target solely because the
wenzelm@30845
  2366
parameter types in the theorem are not as general as in the target,
wenzelm@30845
  2367
consider declaring a new locale with additional type constraints on
wenzelm@30845
  2368
the parameters (context element "constrains").
wenzelm@30845
  2369
wenzelm@30845
  2370
- Discontinued "locale (open)".  INCOMPATIBILITY.
wenzelm@30845
  2371
wenzelm@30845
  2372
- Locale interpretation commands no longer attempt to simplify goal.
wenzelm@30845
  2373
INCOMPATIBILITY: in rare situations the generated goal differs.  Use
wenzelm@30845
  2374
methods intro_locales and unfold_locales to clarify.
wenzelm@30845
  2375
wenzelm@30845
  2376
- Locale interpretation commands no longer accept interpretation
wenzelm@30845
  2377
attributes.  INCOMPATIBILITY.
wenzelm@30845
  2378
wenzelm@30845
  2379
* Class declaration: so-called "base sort" must not be given in import
wenzelm@30845
  2380
list any longer, but is inferred from the specification.  Particularly
wenzelm@30845
  2381
in HOL, write
wenzelm@30845
  2382
wenzelm@30845
  2383
    class foo = ...
wenzelm@30845
  2384
wenzelm@30845
  2385
instead of
wenzelm@30845
  2386
wenzelm@30845
  2387
    class foo = type + ...
wenzelm@30845
  2388
wenzelm@30845
  2389
* Class target: global versions of theorems stemming do not carry a
wenzelm@30845
  2390
parameter prefix any longer.  INCOMPATIBILITY.
wenzelm@30845
  2391
wenzelm@30845
  2392
* Class 'instance' command no longer accepts attached definitions.
wenzelm@30845
  2393
INCOMPATIBILITY, use proper 'instantiation' target instead.
wenzelm@30845
  2394
wenzelm@30845
  2395
* Recovered hiding of consts, which was accidentally broken in
wenzelm@30845
  2396
Isabelle2007.  Potential INCOMPATIBILITY, ``hide const c'' really
wenzelm@30845
  2397
makes c inaccessible; consider using ``hide (open) const c'' instead.
wenzelm@30845
  2398
wenzelm@30845
  2399
* Slightly more coherent Pure syntax, with updated documentation in
wenzelm@30845
  2400
isar-ref manual.  Removed locales meta_term_syntax and
wenzelm@30845
  2401
meta_conjunction_syntax: TERM and &&& (formerly &&) are now permanent,
wenzelm@30845
  2402
INCOMPATIBILITY in rare situations.  Note that &&& should not be used
wenzelm@30845
  2403
directly in regular applications.
wenzelm@30845
  2404
wenzelm@30845
  2405
* There is a new syntactic category "float_const" for signed decimal
wenzelm@30845
  2406
fractions (e.g. 123.45 or -123.45).
wenzelm@30845
  2407
wenzelm@30845
  2408
* Removed exotic 'token_translation' command.  INCOMPATIBILITY, use ML
wenzelm@30845
  2409
interface with 'setup' command instead.
wenzelm@30845
  2410
wenzelm@30845
  2411
* Command 'local_setup' is similar to 'setup', but operates on a local
wenzelm@30845
  2412
theory context.
haftmann@27104
  2413
wenzelm@28114
  2414
* The 'axiomatization' command now only works within a global theory
wenzelm@28114
  2415
context.  INCOMPATIBILITY.
wenzelm@28114
  2416
wenzelm@30845
  2417
* Goal-directed proof now enforces strict proof irrelevance wrt. sort
wenzelm@30845
  2418
hypotheses.  Sorts required in the course of reasoning need to be
wenzelm@30845
  2419
covered by the constraints in the initial statement, completed by the
wenzelm@30845
  2420
type instance information of the background theory.  Non-trivial sort
wenzelm@30845
  2421
hypotheses, which rarely occur in practice, may be specified via
wenzelm@30845
  2422
vacuous propositions of the form SORT_CONSTRAINT('a::c).  For example:
wenzelm@30845
  2423
wenzelm@30845
  2424
  lemma assumes "SORT_CONSTRAINT('a::empty)" shows False ...
wenzelm@30845
  2425
wenzelm@30845
  2426
The result contains an implicit sort hypotheses as before --
wenzelm@30845
  2427
SORT_CONSTRAINT premises are eliminated as part of the canonical rule
wenzelm@30845
  2428
normalization.
wenzelm@30845
  2429
wenzelm@30845
  2430
* Generalized Isar history, with support for linear undo, direct state
wenzelm@30845
  2431
addressing etc.
wenzelm@30845
  2432
wenzelm@30845
  2433
* Changed defaults for unify configuration options:
wenzelm@30845
  2434
wenzelm@30845
  2435
  unify_trace_bound = 50 (formerly 25)
wenzelm@30845
  2436
  unify_search_bound = 60 (formerly 30)
wenzelm@30845
  2437
wenzelm@30845
  2438
* Different bookkeeping for code equations (INCOMPATIBILITY):
wenzelm@30845
  2439
wenzelm@30845
  2440
  a) On theory merge, the last set of code equations for a particular
wenzelm@30845
  2441
     constant is taken (in accordance with the policy applied by other
wenzelm@30845
  2442
     parts of the code generator framework).
wenzelm@30845
  2443
wenzelm@30845
  2444
  b) Code equations stemming from explicit declarations (e.g. code
wenzelm@30845
  2445
     attribute) gain priority over default code equations stemming
wenzelm@30845
  2446
     from definition, primrec, fun etc.
wenzelm@30845
  2447
wenzelm@30845
  2448
* Keyword 'code_exception' now named 'code_abort'.  INCOMPATIBILITY.
wenzelm@30845
  2449
haftmann@30965
  2450
* Unified theorem tables for both code generators.  Thus [code
wenzelm@30845
  2451
func] has disappeared and only [code] remains.  INCOMPATIBILITY.
wenzelm@30577
  2452
wenzelm@30577
  2453
* Command 'find_consts' searches for constants based on type and name
wenzelm@30577
  2454
patterns, e.g.
kleing@29883
  2455
kleing@29883
  2456
    find_consts "_ => bool"
kleing@29883
  2457
wenzelm@30106
  2458
By default, matching is against subtypes, but it may be restricted to
wenzelm@30728
  2459
the whole type.  Searching by name is possible.  Multiple queries are
wenzelm@30106
  2460
conjunctive and queries may be negated by prefixing them with a
wenzelm@30106
  2461
hyphen:
kleing@29883
  2462
kleing@29883
  2463
    find_consts strict: "_ => bool" name: "Int" -"int => int"
kleing@29861
  2464
wenzelm@30845
  2465
* New 'find_theorems' criterion "solves" matches theorems that
wenzelm@30845
  2466
directly solve the current goal (modulo higher-order unification).
wenzelm@30845
  2467
wenzelm@30845
  2468
* Auto solve feature for main theorem statements: whenever a new goal
wenzelm@30845
  2469
is stated, "find_theorems solves" is called; any theorems that could
wenzelm@30845
  2470
solve the lemma directly are listed as part of the goal state.
wenzelm@30845
  2471
Cf. associated options in Proof General Isabelle settings menu,
wenzelm@30845
  2472
enabled by default, with reasonable timeout for pathological cases of
wenzelm@30845
  2473
higher-order unification.
webertj@30415
  2474
haftmann@27104
  2475
wenzelm@27381
  2476
*** Document preparation ***
wenzelm@27381
  2477
wenzelm@27381
  2478
* Antiquotation @{lemma} now imitates a regular terminal proof,
wenzelm@27392
  2479
demanding keyword 'by' and supporting the full method expression
wenzelm@27519
  2480
syntax just like the Isar command 'by'.
wenzelm@27381
  2481
wenzelm@27381
  2482
haftmann@27104
  2483
*** HOL ***
haftmann@27104
  2484
wenzelm@30845
  2485
* Integrated main parts of former image HOL-Complex with HOL.  Entry
wenzelm@30845
  2486
points Main and Complex_Main remain as before.
wenzelm@30845
  2487
wenzelm@30845
  2488
* Logic image HOL-Plain provides a minimal HOL with the most important
wenzelm@30845
  2489
tools available (inductive, datatype, primrec, ...).  This facilitates
wenzelm@30845
  2490
experimentation and tool development.  Note that user applications
wenzelm@30845
  2491
(and library theories) should never refer to anything below theory
wenzelm@30845
  2492
Main, as before.
wenzelm@30845
  2493
wenzelm@30845
  2494
* Logic image HOL-Main stops at theory Main, and thus facilitates
wenzelm@30845
  2495
experimentation due to shorter build times.
wenzelm@30845
  2496
wenzelm@30845
  2497
* Logic image HOL-NSA contains theories of nonstandard analysis which
wenzelm@30845
  2498
were previously part of former HOL-Complex.  Entry point Hyperreal
wenzelm@30845
  2499
remains valid, but theories formerly using Complex_Main should now use
wenzelm@30845
  2500
new entry point Hypercomplex.
wenzelm@30845
  2501
wenzelm@30845
  2502
* Generic ATP manager for Sledgehammer, based on ML threads instead of
wenzelm@30845
  2503
Posix processes.  Avoids potentially expensive forking of the ML
wenzelm@30845
  2504
process.  New thread-based implementation also works on non-Unix
wenzelm@30845
  2505
platforms (Cygwin).  Provers are no longer hardwired, but defined
wenzelm@30845
  2506
within the theory via plain ML wrapper functions.  Basic Sledgehammer
wenzelm@30845
  2507
commands are covered in the isar-ref manual.
wenzelm@30845
  2508
wenzelm@30845
  2509
* Wrapper scripts for remote SystemOnTPTP service allows to use
wenzelm@30845
  2510
sledgehammer without local ATP installation (Vampire etc.). Other
wenzelm@30845
  2511
provers may be included via suitable ML wrappers, see also
wenzelm@30845
  2512
src/HOL/ATP_Linkup.thy.
wenzelm@30845
  2513
wenzelm@30845
  2514
* ATP selection (E/Vampire/Spass) is now via Proof General's settings
wenzelm@30845
  2515
menu.
wenzelm@30845
  2516
wenzelm@30845
  2517
* The metis method no longer fails because the theorem is too trivial
wenzelm@30845
  2518
(contains the empty clause).
wenzelm@30845
  2519
wenzelm@30845
  2520
* The metis method now fails in the usual manner, rather than raising
wenzelm@30845
  2521
an exception, if it determines that it cannot prove the theorem.
wenzelm@30845
  2522
wenzelm@30845
  2523
* Method "coherent" implements a prover for coherent logic (see also
wenzelm@30845
  2524
src/Tools/coherent.ML).
wenzelm@30845
  2525
wenzelm@30845
  2526
* Constants "undefined" and "default" replace "arbitrary".  Usually
wenzelm@30845
  2527
"undefined" is the right choice to replace "arbitrary", though
wenzelm@30845
  2528
logically there is no difference.  INCOMPATIBILITY.
wenzelm@30845
  2529
wenzelm@30845
  2530
* Command "value" now integrates different evaluation mechanisms.  The
wenzelm@30845
  2531
result of the first successful evaluation mechanism is printed.  In
wenzelm@30845
  2532
square brackets a particular named evaluation mechanisms may be
wenzelm@30845
  2533
specified (currently, [SML], [code] or [nbe]).  See further
wenzelm@30845
  2534
src/HOL/ex/Eval_Examples.thy.
wenzelm@30845
  2535
wenzelm@30845
  2536
* Normalization by evaluation now allows non-leftlinear equations.
wenzelm@30845
  2537
Declare with attribute [code nbe].
wenzelm@30845
  2538
wenzelm@30845
  2539
* Methods "case_tac" and "induct_tac" now refer to the very same rules
wenzelm@30845
  2540
as the structured Isar versions "cases" and "induct", cf. the
wenzelm@30845
  2541
corresponding "cases" and "induct" attributes.  Mutual induction rules
wenzelm@30845
  2542
are now presented as a list of individual projections
wenzelm@30845
  2543
(e.g. foo_bar.inducts for types foo and bar); the old format with
wenzelm@30845
  2544
explicit HOL conjunction is no longer supported.  INCOMPATIBILITY, in
wenzelm@30845
  2545
rare situations a different rule is selected --- notably nested tuple
wenzelm@30845
  2546
elimination instead of former prod.exhaust: use explicit (case_tac t
wenzelm@30845
  2547
rule: prod.exhaust) here.
wenzelm@30845
  2548
wenzelm@30845
  2549
* Attributes "cases", "induct", "coinduct" support "del" option.
wenzelm@30845
  2550
wenzelm@30845
  2551
* Removed fact "case_split_thm", which duplicates "case_split".
wenzelm@30845
  2552
wenzelm@30845
  2553
* The option datatype has been moved to a new theory Option.  Renamed
wenzelm@30845
  2554
option_map to Option.map, and o2s to Option.set, INCOMPATIBILITY.
wenzelm@30845
  2555
wenzelm@30845
  2556
* New predicate "strict_mono" classifies strict functions on partial
wenzelm@30845
  2557
orders.  With strict functions on linear orders, reasoning about
wenzelm@30845
  2558
(in)equalities is facilitated by theorems "strict_mono_eq",
wenzelm@30845
  2559
"strict_mono_less_eq" and "strict_mono_less".
wenzelm@30845
  2560
wenzelm@30845
  2561
* Some set operations are now proper qualified constants with
wenzelm@30845
  2562
authentic syntax.  INCOMPATIBILITY:
haftmann@30304
  2563
haftmann@30304
  2564
    op Int ~>   Set.Int
haftmann@30304
  2565
    op Un ~>    Set.Un
haftmann@30304
  2566
    INTER ~>    Set.INTER
haftmann@30304
  2567
    UNION ~>    Set.UNION
haftmann@30304
  2568
    Inter ~>    Set.Inter
haftmann@30304
  2569
    Union ~>    Set.Union
haftmann@30304
  2570
    {} ~>       Set.empty
haftmann@30304
  2571
    UNIV ~>     Set.UNIV
haftmann@30304
  2572
wenzelm@30845
  2573
* Class complete_lattice with operations Inf, Sup, INFI, SUPR now in
wenzelm@30845
  2574
theory Set.
wenzelm@30845
  2575
wenzelm@30845
  2576
* Auxiliary class "itself" has disappeared -- classes without any
wenzelm@30845
  2577
parameter are treated as expected by the 'class' command.
haftmann@29797
  2578
haftmann@29823
  2579
* Leibnitz's Series for Pi and the arcus tangens and logarithm series.
haftmann@29823
  2580
wenzelm@30845
  2581
* Common decision procedures (Cooper, MIR, Ferrack, Approximation,
wenzelm@30845
  2582
Dense_Linear_Order) are now in directory HOL/Decision_Procs.
wenzelm@30845
  2583
wenzelm@30845
  2584
* Theory src/HOL/Decision_Procs/Approximation provides the new proof
wenzelm@30845
  2585
method "approximation".  It proves formulas on real values by using
wenzelm@30845
  2586
interval arithmetic.  In the formulas are also the transcendental
wenzelm@30845
  2587
functions sin, cos, tan, atan, ln, exp and the constant pi are
wenzelm@30845
  2588
allowed. For examples see
wenzelm@30845
  2589
src/HOL/Descision_Procs/ex/Approximation_Ex.thy.
haftmann@29823
  2590
haftmann@29823
  2591
* Theory "Reflection" now resides in HOL/Library.
haftmann@29650
  2592
wenzelm@30845
  2593
* Entry point to Word library now simply named "Word".
wenzelm@30845
  2594
INCOMPATIBILITY.
haftmann@29628
  2595
haftmann@29197
  2596
* Made source layout more coherent with logical distribution
haftmann@29197
  2597
structure:
haftmann@28952
  2598
haftmann@28952
  2599
    src/HOL/Library/RType.thy ~> src/HOL/Typerep.thy
haftmann@28952
  2600
    src/HOL/Library/Code_Message.thy ~> src/HOL/
haftmann@28952
  2601
    src/HOL/Library/GCD.thy ~> src/HOL/
haftmann@28952
  2602
    src/HOL/Library/Order_Relation.thy ~> src/HOL/
haftmann@28952
  2603
    src/HOL/Library/Parity.thy ~> src/HOL/
haftmann@28952
  2604
    src/HOL/Library/Univ_Poly.thy ~> src/HOL/
huffman@30176
  2605
    src/HOL/Real/ContNotDenum.thy ~> src/HOL/Library/
haftmann@28952
  2606
    src/HOL/Real/Lubs.thy ~> src/HOL/
haftmann@28952
  2607
    src/HOL/Real/PReal.thy ~> src/HOL/
haftmann@28952
  2608
    src/HOL/Real/Rational.thy ~> src/HOL/
haftmann@28952
  2609
    src/HOL/Real/RComplete.thy ~> src/HOL/
haftmann@28952
  2610
    src/HOL/Real/RealDef.thy ~> src/HOL/
haftmann@28952
  2611
    src/HOL/Real/RealPow.thy ~> src/HOL/
haftmann@28952
  2612
    src/HOL/Real/Real.thy ~> src/HOL/
haftmann@28952
  2613
    src/HOL/Complex/Complex_Main.thy ~> src/HOL/
haftmann@28952
  2614
    src/HOL/Complex/Complex.thy ~> src/HOL/
huffman@30176
  2615
    src/HOL/Complex/FrechetDeriv.thy ~> src/HOL/Library/
huffman@30176
  2616
    src/HOL/Complex/Fundamental_Theorem_Algebra.thy ~> src/HOL/Library/
haftmann@28952
  2617
    src/HOL/Hyperreal/Deriv.thy ~> src/HOL/
haftmann@28952
  2618
    src/HOL/Hyperreal/Fact.thy ~> src/HOL/
haftmann@28952
  2619
    src/HOL/Hyperreal/Integration.thy ~> src/HOL/
haftmann@28952
  2620
    src/HOL/Hyperreal/Lim.thy ~> src/HOL/
haftmann@28952
  2621
    src/HOL/Hyperreal/Ln.thy ~> src/HOL/
haftmann@28952
  2622
    src/HOL/Hyperreal/Log.thy ~> src/HOL/
haftmann@28952
  2623
    src/HOL/Hyperreal/MacLaurin.thy ~> src/HOL/
haftmann@28952
  2624
    src/HOL/Hyperreal/NthRoot.thy ~> src/HOL/
haftmann@28952
  2625
    src/HOL/Hyperreal/Series.thy ~> src/HOL/
haftmann@29197
  2626
    src/HOL/Hyperreal/SEQ.thy ~> src/HOL/
haftmann@28952
  2627
    src/HOL/Hyperreal/Taylor.thy ~> src/HOL/
haftmann@28952
  2628
    src/HOL/Hyperreal/Transcendental.thy ~> src/HOL/
haftmann@28952
  2629
    src/HOL/Real/Float ~> src/HOL/Library/
haftmann@29197
  2630
    src/HOL/Real/HahnBanach ~> src/HOL/HahnBanach
haftmann@29197
  2631
    src/HOL/Real/RealVector.thy ~> src/HOL/
haftmann@28952
  2632
haftmann@28952
  2633
    src/HOL/arith_data.ML ~> src/HOL/Tools
haftmann@28952
  2634
    src/HOL/hologic.ML ~> src/HOL/Tools
haftmann@28952
  2635
    src/HOL/simpdata.ML ~> src/HOL/Tools
haftmann@28952
  2636
    src/HOL/int_arith1.ML ~> src/HOL/Tools/int_arith.ML
haftmann@28952
  2637
    src/HOL/int_factor_simprocs.ML ~> src/HOL/Tools
haftmann@28952
  2638
    src/HOL/nat_simprocs.ML ~> src/HOL/Tools
haftmann@28952
  2639
    src/HOL/Real/float_arith.ML ~> src/HOL/Tools
haftmann@28952
  2640
    src/HOL/Real/float_syntax.ML ~> src/HOL/Tools
haftmann@28952
  2641
    src/HOL/Real/rat_arith.ML ~> src/HOL/Tools
haftmann@28952
  2642
    src/HOL/Real/real_arith.ML ~> src/HOL/Tools
haftmann@28952
  2643
haftmann@29398
  2644
    src/HOL/Library/Array.thy ~> src/HOL/Imperative_HOL
haftmann@29398
  2645
    src/HOL/Library/Heap_Monad.thy ~> src/HOL/Imperative_HOL
haftmann@29398
  2646
    src/HOL/Library/Heap.thy ~> src/HOL/Imperative_HOL
haftmann@29398
  2647
    src/HOL/Library/Imperative_HOL.thy ~> src/HOL/Imperative_HOL
haftmann@29398
  2648
    src/HOL/Library/Ref.thy ~> src/HOL/Imperative_HOL
haftmann@29398
  2649
    src/HOL/Library/Relational.thy ~> src/HOL/Imperative_HOL
haftmann@29398
  2650
wenzelm@30845
  2651
* If methods "eval" and "evaluation" encounter a structured proof
wenzelm@30845
  2652
state with !!/==>, only the conclusion is evaluated to True (if
wenzelm@30845
  2653
possible), avoiding strange error messages.
wenzelm@30845
  2654
wenzelm@30845
  2655
* Method "sizechange" automates termination proofs using (a
wenzelm@30845
  2656
modification of) the size-change principle.  Requires SAT solver.  See
wenzelm@30845
  2657
src/HOL/ex/Termination.thy for examples.
wenzelm@30845
  2658
wenzelm@30845
  2659
* Simplifier: simproc for let expressions now unfolds if bound
wenzelm@30845
  2660
variable occurs at most once in let expression body.  INCOMPATIBILITY.
wenzelm@30845
  2661