NEWS
author bulwahn
Wed Oct 19 09:11:21 2011 +0200 (2011-10-19)
changeset 45191 d98a0388faab
parent 45160 b09575e075a5
child 45196 78478d938cb8
permissions -rw-r--r--
NEWS
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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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*** Pure ***
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* Obsolete command 'types' has been discontinued.  Use 'type_synonym'
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instead.  INCOMPATIBILITY.
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* Ancient code generator for SML and its commands 'code_module',
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 'code_library', 'consts_code', 'types_code' have been discontinued.
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  Use commands of the generic code generator instead. INCOMPATIBILITY.
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*** HOL ***
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* 'Transitive_Closure.ntrancl': bounded transitive closure on relations.
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* 'sublists' moved to More_List.thy; INCOMPATIBILITY.
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* Theory Int: Discontinued many legacy theorems specific to type int.
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  INCOMPATIBILITY, use the corresponding generic theorems instead.
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  zminus_zminus ~> minus_minus
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  zminus_0 ~> minus_zero
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  zminus_zadd_distrib ~> minus_add_distrib
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  zadd_commute ~> add_commute
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  zadd_assoc ~> add_assoc
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  zadd_left_commute ~> add_left_commute
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  zmult_ac ~> mult_ac
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  zadd_0 ~> add_0_left
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  zadd_0_right ~> add_0_right
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  zadd_zminus_inverse2 ~> left_minus
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  zmult_zminus ~> mult_minus_left
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  zmult_commute ~> mult_commute
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  zmult_assoc ~> mult_assoc
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  zadd_zmult_distrib ~> left_distrib
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  zadd_zmult_distrib2 ~> right_distrib
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  zdiff_zmult_distrib ~> left_diff_distrib
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  zdiff_zmult_distrib2 ~> right_diff_distrib
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  zmult_1 ~> mult_1_left
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  zmult_1_right ~> mult_1_right
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  zle_refl ~> order_refl
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  zle_trans ~> order_trans
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  zle_antisym ~> order_antisym
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  zle_linear ~> linorder_linear
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  zless_linear ~> linorder_less_linear
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  zadd_left_mono ~> add_left_mono
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  zadd_strict_right_mono ~> add_strict_right_mono
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  zadd_zless_mono ~> add_less_le_mono
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  int_0_less_1 ~> zero_less_one
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  int_0_neq_1 ~> zero_neq_one
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  zless_le ~> less_le
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  zpower_zadd_distrib ~> power_add
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  zero_less_zpower_abs_iff ~> zero_less_power_abs_iff
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  zero_le_zpower_abs ~> zero_le_power_abs
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* New case_product attribute to generate a case rule doing multiple case
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  distinctions at the same time: E.g.
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    list.exhaust[case_product nat.exhaust]
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  produces a rule which can be used to perform case distinction on both
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  a list and a nat.
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*** FOL ***
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* New case_product attribute (see HOL).
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*** ML ***
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* Structure Proof_Context follows standard naming scheme.  Old
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ProofContext has been discontinued.  INCOMPATIBILITY.
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New in Isabelle2011-1 (October 2011)
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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" or "ISABELLE_HOME/Isabelle" 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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* 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 has been updated and extended:
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  - "Synopsis" provides a catalog of main Isar language concepts.
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  - Formal references in syntax diagrams, via @{rail} antiquotation.
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  - Updated material from classic "ref" manual, notably about
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    "Classical Reasoner".
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*** HOL ***
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* Class 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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Removed redundant lemmas (the right hand side gives hints how to
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replace them for (metis ...), or (simp only: ...) proofs):
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  Inf_singleton ~> Inf_insert [where A="{}", unfolded Inf_empty inf_top_right]
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  Sup_singleton ~> Sup_insert [where A="{}", unfolded Sup_empty sup_bot_right]
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  Inf_binary ~> Inf_insert, Inf_empty, and inf_top_right
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  Sup_binary ~> Sup_insert, Sup_empty, and sup_bot_right
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  Int_eq_Inter ~> Inf_insert, Inf_empty, and inf_top_right
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  Un_eq_Union ~> Sup_insert, Sup_empty, and sup_bot_right
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  Inter_def ~> INF_def, image_def
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  Union_def ~> SUP_def, image_def
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  INT_eq ~> INF_def, and image_def
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  UN_eq ~> SUP_def, and image_def
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  INF_subset ~> INF_superset_mono [OF _ order_refl]
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More consistent and comprehensive names:
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  INTER_eq_Inter_image ~> INF_def
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  UNION_eq_Union_image ~> SUP_def
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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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* Renamed theory Complete_Lattice to Complete_Lattices.
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INCOMPATIBILITY.
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* Theory Complete_Lattices: lemmas Inf_eq_top_iff, INF_eq_top_iff,
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INF_image, Inf_insert, INF_top, Inf_top_conv, INF_top_conv, SUP_bot,
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Sup_bot_conv, SUP_bot_conv, Sup_eq_top_iff, SUP_eq_top_iff, SUP_image,
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Sup_insert are now declared as [simp].  INCOMPATIBILITY.
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* Theory Lattice: lemmas compl_inf_bot, compl_le_comp_iff,
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compl_sup_top, inf_idem, inf_left_idem, inf_sup_absorb, sup_idem,
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sup_inf_absob, sup_left_idem are now declared as [simp].  Minor
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INCOMPATIBILITY.
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* Added syntactic classes "inf" and "sup" for the respective
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constants.  INCOMPATIBILITY: Changes in the argument order of the
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(mostly internal) locale predicates for some derived classes.
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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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* 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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* 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_diff_def ~> minus_real_def
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  real_divide_def ~> divide_real_def
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  real_less_def ~> less_le
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  real_abs_def ~> abs_real_def
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  real_sgn_def ~> sgn_real_def
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  real_mult_commute ~> mult_commute
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  real_mult_assoc ~> mult_assoc
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  real_mult_1 ~> mult_1_left
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  real_add_mult_distrib ~> left_distrib
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  real_zero_not_eq_one ~> zero_neq_one
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  real_mult_inverse_left ~> left_inverse
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  INVERSE_ZERO ~> inverse_zero
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  real_le_refl ~> order_refl
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  real_le_antisym ~> order_antisym
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  real_le_trans ~> order_trans
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  real_le_linear ~> linear
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  real_le_eq_diff ~> le_iff_diff_le_0
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  real_add_left_mono ~> add_left_mono
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  real_mult_order ~> mult_pos_pos
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  real_mult_less_mono2 ~> mult_strict_left_mono
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  real_of_int_real_of_nat ~> real_of_int_of_nat_eq
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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
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  LIMSEQ_add ~> tendsto_add
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  LIMSEQ_minus ~> tendsto_minus
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  LIMSEQ_minus_cancel ~> tendsto_minus_cancel
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  LIMSEQ_diff ~> tendsto_diff
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  bounded_linear.LIMSEQ ~> bounded_linear.tendsto
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  bounded_bilinear.LIMSEQ ~> bounded_bilinear.tendsto
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  LIMSEQ_mult ~> tendsto_mult
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  LIMSEQ_inverse ~> tendsto_inverse
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  LIMSEQ_divide ~> tendsto_divide
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  LIMSEQ_pow ~> tendsto_power
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  LIMSEQ_setsum ~> tendsto_setsum
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  LIMSEQ_setprod ~> tendsto_setprod
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  LIMSEQ_norm_zero ~> tendsto_norm_zero_iff
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  LIMSEQ_rabs_zero ~> tendsto_rabs_zero_iff
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  LIMSEQ_imp_rabs ~> tendsto_rabs
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  LIMSEQ_add_minus ~> tendsto_add [OF _ tendsto_minus]
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  LIMSEQ_add_const ~> tendsto_add [OF _ tendsto_const]
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  LIMSEQ_diff_const ~> tendsto_diff [OF _ tendsto_const]
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  LIMSEQ_Complex ~> tendsto_Complex
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  LIM_ident ~> tendsto_ident_at
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  LIM_const ~> tendsto_const
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  LIM_add ~> tendsto_add
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  LIM_add_zero ~> tendsto_add_zero
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  LIM_minus ~> tendsto_minus
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  LIM_diff ~> tendsto_diff
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  LIM_norm ~> tendsto_norm
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  LIM_norm_zero ~> tendsto_norm_zero
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  LIM_norm_zero_cancel ~> tendsto_norm_zero_cancel
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  LIM_norm_zero_iff ~> tendsto_norm_zero_iff
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  LIM_rabs ~> tendsto_rabs
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  LIM_rabs_zero ~> tendsto_rabs_zero
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  LIM_rabs_zero_cancel ~> tendsto_rabs_zero_cancel
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  LIM_rabs_zero_iff ~> tendsto_rabs_zero_iff
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  LIM_compose ~> tendsto_compose
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  LIM_mult ~> tendsto_mult
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  LIM_scaleR ~> tendsto_scaleR
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  LIM_of_real ~> tendsto_of_real
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  LIM_power ~> tendsto_power
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  LIM_inverse ~> tendsto_inverse
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  LIM_sgn ~> tendsto_sgn
huffman@44568
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  isCont_LIM_compose ~> isCont_tendsto_compose
huffman@44568
   328
  bounded_linear.LIM ~> bounded_linear.tendsto
huffman@44568
   329
  bounded_linear.LIM_zero ~> bounded_linear.tendsto_zero
huffman@44568
   330
  bounded_bilinear.LIM ~> bounded_bilinear.tendsto
huffman@44568
   331
  bounded_bilinear.LIM_prod_zero ~> bounded_bilinear.tendsto_zero
huffman@44568
   332
  bounded_bilinear.LIM_left_zero ~> bounded_bilinear.tendsto_left_zero
huffman@44568
   333
  bounded_bilinear.LIM_right_zero ~> bounded_bilinear.tendsto_right_zero
huffman@44568
   334
  LIM_inverse_fun ~> tendsto_inverse [OF tendsto_ident_at]
huffman@44522
   335
wenzelm@44967
   336
* Theory Complex_Main: The definition of infinite series was
wenzelm@44967
   337
generalized.  Now it is defined on the type class {topological_space,
wenzelm@44967
   338
comm_monoid_add}.  Hence it is useable also for extended real numbers.
wenzelm@42484
   339
huffman@44908
   340
* Theory Complex_Main: The complex exponential function "expi" is now
huffman@44908
   341
a type-constrained abbreviation for "exp :: complex => complex"; thus
huffman@44908
   342
several polymorphic lemmas about "exp" are now applicable to "expi".
huffman@44908
   343
wenzelm@44968
   344
* Code generation:
wenzelm@44968
   345
wenzelm@44968
   346
  - Theory Library/Code_Char_ord provides native ordering of
wenzelm@44968
   347
    characters in the target language.
wenzelm@44968
   348
wenzelm@44968
   349
  - Commands code_module and code_library are legacy, use export_code
wenzelm@44968
   350
    instead.
wenzelm@44968
   351
wenzelm@44968
   352
  - Method "evaluation" is legacy, use method "eval" instead.
wenzelm@44968
   353
wenzelm@44968
   354
  - Legacy evaluator "SML" is deactivated by default.  May be
wenzelm@44968
   355
    reactivated by the following theory command:
wenzelm@44968
   356
wenzelm@44968
   357
      setup {* Value.add_evaluator ("SML", Codegen.eval_term) *}
wenzelm@44968
   358
wenzelm@44968
   359
* Declare ext [intro] by default.  Rare INCOMPATIBILITY.
wenzelm@44968
   360
wenzelm@45088
   361
* New proof method "induction" that gives induction hypotheses the
wenzelm@45088
   362
name "IH", thus distinguishing them from further hypotheses that come
wenzelm@45088
   363
from rule induction.  The latter are still called "hyps".  Method
wenzelm@45088
   364
"induction" is a thin wrapper around "induct" and follows the same
wenzelm@45088
   365
syntax.
wenzelm@45088
   366
wenzelm@44968
   367
* Method "fastsimp" has been renamed to "fastforce", but "fastsimp" is
wenzelm@44968
   368
still available as a legacy feature for some time.
wenzelm@44968
   369
wenzelm@44968
   370
* Nitpick:
wenzelm@44968
   371
  - Added "need" and "total_consts" options.
wenzelm@44968
   372
  - Reintroduced "show_skolems" option by popular demand.
wenzelm@44968
   373
  - Renamed attribute: nitpick_def ~> nitpick_unfold.
wenzelm@44968
   374
    INCOMPATIBILITY.
wenzelm@44968
   375
wenzelm@44968
   376
* Sledgehammer:
wenzelm@44968
   377
  - Use quasi-sound (and efficient) translations by default.
wenzelm@44968
   378
  - Added support for the following provers: E-ToFoF, LEO-II,
wenzelm@44968
   379
    Satallax, SNARK, Waldmeister, and Z3 with TPTP syntax.
wenzelm@44968
   380
  - Automatically preplay and minimize proofs before showing them if
wenzelm@44968
   381
    this can be done within reasonable time.
wenzelm@44968
   382
  - sledgehammer available_provers ~> sledgehammer supported_provers.
wenzelm@44968
   383
    INCOMPATIBILITY.
wenzelm@44968
   384
  - Added "preplay_timeout", "slicing", "type_enc", "sound",
wenzelm@44968
   385
    "max_mono_iters", and "max_new_mono_instances" options.
wenzelm@44968
   386
  - Removed "explicit_apply" and "full_types" options as well as "Full
wenzelm@44968
   387
    Types" Proof General menu item. INCOMPATIBILITY.
wenzelm@44968
   388
wenzelm@44968
   389
* Metis:
wenzelm@44968
   390
  - Removed "metisF" -- use "metis" instead. INCOMPATIBILITY.
wenzelm@44968
   391
  - Obsoleted "metisFT" -- use "metis (full_types)" instead.
wenzelm@44968
   392
    INCOMPATIBILITY.
wenzelm@44968
   393
wenzelm@44968
   394
* Command 'try':
wenzelm@44968
   395
  - Renamed 'try_methods' and added "simp:", "intro:", "dest:", and
wenzelm@44968
   396
    "elim:" options. INCOMPATIBILITY.
wenzelm@44968
   397
  - Introduced 'try' that not only runs 'try_methods' but also
wenzelm@44968
   398
    'solve_direct', 'sledgehammer', 'quickcheck', and 'nitpick'.
wenzelm@44968
   399
wenzelm@44968
   400
* Quickcheck:
wenzelm@44968
   401
  - Added "eval" option to evaluate terms for the found counterexample
wenzelm@44968
   402
    (currently only supported by the default (exhaustive) tester).
wenzelm@44968
   403
  - Added post-processing of terms to obtain readable counterexamples
wenzelm@44968
   404
    (currently only supported by the default (exhaustive) tester).
wenzelm@44968
   405
  - New counterexample generator quickcheck[narrowing] enables
wenzelm@44968
   406
    narrowing-based testing.  Requires the Glasgow Haskell compiler
wenzelm@44968
   407
    with its installation location defined in the Isabelle settings
wenzelm@44968
   408
    environment as ISABELLE_GHC.
wenzelm@44968
   409
  - Removed quickcheck tester "SML" based on the SML code generator
wenzelm@44968
   410
    (formly in HOL/Library).
wenzelm@44968
   411
wenzelm@44968
   412
* Function package: discontinued option "tailrec".  INCOMPATIBILITY,
wenzelm@44968
   413
use 'partial_function' instead.
wenzelm@44968
   414
wenzelm@44968
   415
* Theory Library/Extended_Reals replaces now the positive extended
wenzelm@44968
   416
reals found in probability theory. This file is extended by
wenzelm@44968
   417
Multivariate_Analysis/Extended_Real_Limits.
wenzelm@44968
   418
wenzelm@44974
   419
* Theory Library/Old_Recdef: old 'recdef' package has been moved here,
wenzelm@44974
   420
from where it must be imported explicitly if it is really required.
wenzelm@44974
   421
INCOMPATIBILITY.
wenzelm@44968
   422
wenzelm@44968
   423
* Theory Library/Wfrec: well-founded recursion combinator "wfrec" has
wenzelm@44968
   424
been moved here.  INCOMPATIBILITY.
wenzelm@44968
   425
wenzelm@44968
   426
* Theory Library/Saturated provides type of numbers with saturated
wenzelm@44968
   427
arithmetic.
wenzelm@44968
   428
wenzelm@44968
   429
* Theory Library/Product_Lattice defines a pointwise ordering for the
wenzelm@44968
   430
product type 'a * 'b, and provides instance proofs for various order
wenzelm@44968
   431
and lattice type classes.
wenzelm@44968
   432
wenzelm@44968
   433
* Theory Library/Countable now provides the "countable_datatype" proof
wenzelm@44968
   434
method for proving "countable" class instances for datatypes.
wenzelm@44968
   435
wenzelm@44968
   436
* Theory Library/Cset_Monad allows do notation for computable sets
wenzelm@44968
   437
(cset) via the generic monad ad-hoc overloading facility.
wenzelm@44968
   438
wenzelm@44968
   439
* Library: Theories of common data structures are split into theories
wenzelm@44968
   440
for implementation, an invariant-ensuring type, and connection to an
wenzelm@44968
   441
abstract type. INCOMPATIBILITY.
wenzelm@44968
   442
wenzelm@44968
   443
  - RBT is split into RBT and RBT_Mapping.
wenzelm@44968
   444
  - AssocList is split and renamed into AList and AList_Mapping.
wenzelm@44968
   445
  - DList is split into DList_Impl, DList, and DList_Cset.
wenzelm@44968
   446
  - Cset is split into Cset and List_Cset.
wenzelm@44968
   447
wenzelm@44968
   448
* Theory Library/Nat_Infinity has been renamed to
wenzelm@44968
   449
Library/Extended_Nat, with name changes of the following types and
wenzelm@44968
   450
constants:
wenzelm@44968
   451
wenzelm@44968
   452
  type inat   ~> type enat
wenzelm@44968
   453
  Fin         ~> enat
wenzelm@44968
   454
  Infty       ~> infinity (overloaded)
wenzelm@44968
   455
  iSuc        ~> eSuc
wenzelm@44968
   456
  the_Fin     ~> the_enat
wenzelm@44968
   457
wenzelm@44968
   458
Every theorem name containing "inat", "Fin", "Infty", or "iSuc" has
wenzelm@44968
   459
been renamed accordingly. INCOMPATIBILITY.
wenzelm@44968
   460
wenzelm@44968
   461
* Session Multivariate_Analysis: The euclidean_space type class now
wenzelm@44968
   462
fixes a constant "Basis :: 'a set" consisting of the standard
wenzelm@44968
   463
orthonormal basis for the type. Users now have the option of
wenzelm@44968
   464
quantifying over this set instead of using the "basis" function, e.g.
wenzelm@44968
   465
"ALL x:Basis. P x" vs "ALL i<DIM('a). P (basis i)".
wenzelm@44968
   466
wenzelm@44968
   467
* Session Multivariate_Analysis: Type "('a, 'b) cart" has been renamed
wenzelm@44968
   468
to "('a, 'b) vec" (the syntax "'a ^ 'b" remains unaffected). Constants
wenzelm@44968
   469
"Cart_nth" and "Cart_lambda" have been respectively renamed to
wenzelm@44968
   470
"vec_nth" and "vec_lambda"; theorems mentioning those names have
wenzelm@44968
   471
changed to match. Definition theorems for overloaded constants now use
wenzelm@44968
   472
the standard "foo_vec_def" naming scheme. A few other theorems have
wenzelm@44968
   473
been renamed as follows (INCOMPATIBILITY):
wenzelm@44968
   474
wenzelm@44968
   475
  Cart_eq          ~> vec_eq_iff
wenzelm@44968
   476
  dist_nth_le_cart ~> dist_vec_nth_le
wenzelm@44968
   477
  tendsto_vector   ~> vec_tendstoI
wenzelm@44968
   478
  Cauchy_vector    ~> vec_CauchyI
wenzelm@44968
   479
wenzelm@44968
   480
* Session Multivariate_Analysis: Several duplicate theorems have been
wenzelm@44968
   481
removed, and other theorems have been renamed or replaced with more
wenzelm@44968
   482
general versions. INCOMPATIBILITY.
wenzelm@44968
   483
wenzelm@44968
   484
  finite_choice ~> finite_set_choice
wenzelm@44968
   485
  eventually_conjI ~> eventually_conj
wenzelm@44968
   486
  eventually_and ~> eventually_conj_iff
wenzelm@44968
   487
  eventually_false ~> eventually_False
wenzelm@44968
   488
  setsum_norm ~> norm_setsum
wenzelm@44968
   489
  Lim_sequentially ~> LIMSEQ_def
wenzelm@44968
   490
  Lim_ident_at ~> LIM_ident
wenzelm@44968
   491
  Lim_const ~> tendsto_const
wenzelm@44968
   492
  Lim_cmul ~> tendsto_scaleR [OF tendsto_const]
wenzelm@44968
   493
  Lim_neg ~> tendsto_minus
wenzelm@44968
   494
  Lim_add ~> tendsto_add
wenzelm@44968
   495
  Lim_sub ~> tendsto_diff
wenzelm@44968
   496
  Lim_mul ~> tendsto_scaleR
wenzelm@44968
   497
  Lim_vmul ~> tendsto_scaleR [OF _ tendsto_const]
wenzelm@44968
   498
  Lim_null_norm ~> tendsto_norm_zero_iff [symmetric]
wenzelm@44968
   499
  Lim_linear ~> bounded_linear.tendsto
wenzelm@44968
   500
  Lim_component ~> tendsto_euclidean_component
wenzelm@44968
   501
  Lim_component_cart ~> tendsto_vec_nth
wenzelm@44968
   502
  Lim_inner ~> tendsto_inner [OF tendsto_const]
wenzelm@44968
   503
  dot_lsum ~> inner_setsum_left
wenzelm@44968
   504
  dot_rsum ~> inner_setsum_right
wenzelm@44968
   505
  continuous_cmul ~> continuous_scaleR [OF continuous_const]
wenzelm@44968
   506
  continuous_neg ~> continuous_minus
wenzelm@44968
   507
  continuous_sub ~> continuous_diff
wenzelm@44968
   508
  continuous_vmul ~> continuous_scaleR [OF _ continuous_const]
wenzelm@44968
   509
  continuous_mul ~> continuous_scaleR
wenzelm@44968
   510
  continuous_inv ~> continuous_inverse
wenzelm@44968
   511
  continuous_at_within_inv ~> continuous_at_within_inverse
wenzelm@44968
   512
  continuous_at_inv ~> continuous_at_inverse
wenzelm@44968
   513
  continuous_at_norm ~> continuous_norm [OF continuous_at_id]
wenzelm@44968
   514
  continuous_at_infnorm ~> continuous_infnorm [OF continuous_at_id]
wenzelm@44968
   515
  continuous_at_component ~> continuous_component [OF continuous_at_id]
wenzelm@44968
   516
  continuous_on_neg ~> continuous_on_minus
wenzelm@44968
   517
  continuous_on_sub ~> continuous_on_diff
wenzelm@44968
   518
  continuous_on_cmul ~> continuous_on_scaleR [OF continuous_on_const]
wenzelm@44968
   519
  continuous_on_vmul ~> continuous_on_scaleR [OF _ continuous_on_const]
wenzelm@44968
   520
  continuous_on_mul ~> continuous_on_scaleR
wenzelm@44968
   521
  continuous_on_mul_real ~> continuous_on_mult
wenzelm@44968
   522
  continuous_on_inner ~> continuous_on_inner [OF continuous_on_const]
wenzelm@44968
   523
  continuous_on_norm ~> continuous_on_norm [OF continuous_on_id]
wenzelm@44968
   524
  continuous_on_inverse ~> continuous_on_inv
wenzelm@44968
   525
  uniformly_continuous_on_neg ~> uniformly_continuous_on_minus
wenzelm@44968
   526
  uniformly_continuous_on_sub ~> uniformly_continuous_on_diff
wenzelm@44968
   527
  subset_interior ~> interior_mono
wenzelm@44968
   528
  subset_closure ~> closure_mono
wenzelm@44968
   529
  closure_univ ~> closure_UNIV
wenzelm@44968
   530
  real_arch_lt ~> reals_Archimedean2
wenzelm@44968
   531
  real_arch ~> reals_Archimedean3
wenzelm@44968
   532
  real_abs_norm ~> abs_norm_cancel
wenzelm@44968
   533
  real_abs_sub_norm ~> norm_triangle_ineq3
wenzelm@44968
   534
  norm_cauchy_schwarz_abs ~> Cauchy_Schwarz_ineq2
wenzelm@44968
   535
wenzelm@44968
   536
* Session HOL-Probability:
wenzelm@44968
   537
  - Caratheodory's extension lemma is now proved for ring_of_sets.
wenzelm@44968
   538
  - Infinite products of probability measures are now available.
wenzelm@44968
   539
  - Sigma closure is independent, if the generator is independent
wenzelm@44968
   540
  - Use extended reals instead of positive extended
wenzelm@44968
   541
    reals. INCOMPATIBILITY.
wenzelm@44968
   542
huffman@45049
   543
* Session HOLCF: Discontinued legacy theorem names, INCOMPATIBILITY.
huffman@45049
   544
huffman@45049
   545
  expand_fun_below ~> fun_below_iff
huffman@45049
   546
  below_fun_ext ~> fun_belowI
huffman@45049
   547
  expand_cfun_eq ~> cfun_eq_iff
huffman@45049
   548
  ext_cfun ~> cfun_eqI
huffman@45049
   549
  expand_cfun_below ~> cfun_below_iff
huffman@45049
   550
  below_cfun_ext ~> cfun_belowI
huffman@45049
   551
  monofun_fun_fun ~> fun_belowD
huffman@45049
   552
  monofun_fun_arg ~> monofunE
huffman@45049
   553
  monofun_lub_fun ~> adm_monofun [THEN admD]
huffman@45049
   554
  cont_lub_fun ~> adm_cont [THEN admD]
huffman@45049
   555
  cont2cont_Rep_CFun ~> cont2cont_APP
huffman@45049
   556
  cont_Rep_CFun_app ~> cont_APP_app
huffman@45049
   557
  cont_Rep_CFun_app_app ~> cont_APP_app_app
huffman@45049
   558
  cont_cfun_fun ~> cont_Rep_cfun1 [THEN contE]
huffman@45049
   559
  cont_cfun_arg ~> cont_Rep_cfun2 [THEN contE]
huffman@45049
   560
  contlub_cfun ~> lub_APP [symmetric]
huffman@45049
   561
  contlub_LAM ~> lub_LAM [symmetric]
huffman@45049
   562
  thelubI ~> lub_eqI
huffman@45049
   563
  UU_I ~> bottomI
huffman@45049
   564
  lift_distinct1 ~> lift.distinct(1)
huffman@45049
   565
  lift_distinct2 ~> lift.distinct(2)
huffman@45049
   566
  Def_not_UU ~> lift.distinct(2)
huffman@45049
   567
  Def_inject ~> lift.inject
huffman@45049
   568
  below_UU_iff ~> below_bottom_iff
huffman@45049
   569
  eq_UU_iff ~> eq_bottom_iff
huffman@45049
   570
huffman@44903
   571
krauss@41685
   572
*** Document preparation ***
krauss@41685
   573
wenzelm@44800
   574
* Antiquotation @{rail} layouts railroad syntax diagrams, see also
wenzelm@44800
   575
isar-ref manual, both for description and actual application of the
wenzelm@44800
   576
same.
wenzelm@44800
   577
wenzelm@44800
   578
* Antiquotation @{value} evaluates the given term and presents its
wenzelm@44800
   579
result.
wenzelm@44800
   580
wenzelm@44800
   581
* Antiquotations: term style "isub" provides ad-hoc conversion of
wenzelm@44800
   582
variables x1, y23 into subscripted form x\<^isub>1,
wenzelm@44800
   583
y\<^isub>2\<^isub>3.
wenzelm@41651
   584
wenzelm@42484
   585
* Predefined LaTeX macros for Isabelle symbols \<bind> and \<then>
wenzelm@42484
   586
(e.g. see ~~/src/HOL/Library/Monad_Syntax.thy).
wenzelm@42484
   587
wenzelm@44967
   588
* Localized \isabellestyle switch can be used within blocks or groups
wenzelm@44967
   589
like this:
wenzelm@44967
   590
wenzelm@44967
   591
  \isabellestyle{it}  %preferred default
wenzelm@44967
   592
  {\isabellestylett @{text "typewriter stuff"}}
wenzelm@44967
   593
wenzelm@44967
   594
* Discontinued special treatment of hard tabulators.  Implicit
wenzelm@44967
   595
tab-width is now defined as 1.  Potential INCOMPATIBILITY for visual
wenzelm@44967
   596
layouts.
wenzelm@44800
   597
wenzelm@41651
   598
wenzelm@41944
   599
*** ML ***
wenzelm@41944
   600
wenzelm@43731
   601
* The inner syntax of sort/type/term/prop supports inlined YXML
wenzelm@43731
   602
representations within quoted string tokens.  By encoding logical
wenzelm@43731
   603
entities via Term_XML (in ML or Scala) concrete syntax can be
wenzelm@43731
   604
bypassed, which is particularly useful for producing bits of text
wenzelm@43731
   605
under external program control.
wenzelm@43731
   606
wenzelm@43565
   607
* Antiquotations for ML and document preparation are managed as theory
wenzelm@43565
   608
data, which requires explicit setup.
wenzelm@43565
   609
wenzelm@42897
   610
* Isabelle_Process.is_active allows tools to check if the official
wenzelm@42897
   611
process wrapper is running (Isabelle/Scala/jEdit) or the old TTY loop
wenzelm@42897
   612
(better known as Proof General).
wenzelm@42897
   613
wenzelm@42360
   614
* Structure Proof_Context follows standard naming scheme.  Old
wenzelm@42360
   615
ProofContext is still available for some time as legacy alias.
wenzelm@42360
   616
wenzelm@42015
   617
* Structure Timing provides various operations for timing; supersedes
wenzelm@42015
   618
former start_timing/end_timing etc.
wenzelm@42015
   619
wenzelm@41944
   620
* Path.print is the official way to show file-system paths to users
wenzelm@41944
   621
(including quotes etc.).
wenzelm@41944
   622
wenzelm@42056
   623
* Inner syntax: identifiers in parse trees of generic categories
wenzelm@42056
   624
"logic", "aprop", "idt" etc. carry position information (disguised as
wenzelm@42056
   625
type constraints).  Occasional INCOMPATIBILITY with non-compliant
wenzelm@42057
   626
translations that choke on unexpected type constraints.  Positions can
wenzelm@42057
   627
be stripped in ML translations via Syntax.strip_positions /
wenzelm@42057
   628
Syntax.strip_positions_ast, or via the syntax constant
wenzelm@42057
   629
"_strip_positions" within parse trees.  As last resort, positions can
wenzelm@42057
   630
be disabled via the configuration option Syntax.positions, which is
wenzelm@42057
   631
called "syntax_positions" in Isar attribute syntax.
wenzelm@42056
   632
wenzelm@42290
   633
* Discontinued special status of various ML structures that contribute
wenzelm@42290
   634
to structure Syntax (Ast, Lexicon, Mixfix, Parser, Printer etc.): less
wenzelm@42290
   635
pervasive content, no inclusion in structure Syntax.  INCOMPATIBILITY,
wenzelm@42290
   636
refer directly to Ast.Constant, Lexicon.is_identifier,
wenzelm@42290
   637
Syntax_Trans.mk_binder_tr etc.
wenzelm@42224
   638
wenzelm@42247
   639
* Typed print translation: discontinued show_sorts argument, which is
wenzelm@42247
   640
already available via context of "advanced" translation.
wenzelm@42247
   641
wenzelm@42370
   642
* Refined PARALLEL_GOALS tactical: degrades gracefully for schematic
wenzelm@42370
   643
goal states; body tactic needs to address all subgoals uniformly.
wenzelm@42370
   644
wenzelm@42403
   645
* Slightly more special eq_list/eq_set, with shortcut involving
wenzelm@42403
   646
pointer equality (assumes that eq relation is reflexive).
wenzelm@42403
   647
wenzelm@42793
   648
* Classical tactics use proper Proof.context instead of historic types
wenzelm@42793
   649
claset/clasimpset.  Old-style declarations like addIs, addEs, addDs
wenzelm@42793
   650
operate directly on Proof.context.  Raw type claset retains its use as
wenzelm@42793
   651
snapshot of the classical context, which can be recovered via
wenzelm@42793
   652
(put_claset HOL_cs) etc.  Type clasimpset has been discontinued.
wenzelm@42793
   653
INCOMPATIBILITY, classical tactics and derived proof methods require
wenzelm@42793
   654
proper Proof.context.
wenzelm@42793
   655
wenzelm@44803
   656
wenzelm@44803
   657
*** System ***
wenzelm@44803
   658
wenzelm@44968
   659
* Discontinued support for Poly/ML 5.2, which was the last version
wenzelm@44968
   660
without proper multithreading and TimeLimit implementation.
wenzelm@44968
   661
wenzelm@44968
   662
* Discontinued old lib/scripts/polyml-platform, which has been
wenzelm@44968
   663
obsolete since Isabelle2009-2.
wenzelm@44968
   664
wenzelm@44967
   665
* Various optional external tools are referenced more robustly and
wenzelm@44967
   666
uniformly by explicit Isabelle settings as follows:
wenzelm@44967
   667
wenzelm@44967
   668
  ISABELLE_CSDP   (formerly CSDP_EXE)
wenzelm@44967
   669
  ISABELLE_GHC    (formerly EXEC_GHC or GHC_PATH)
wenzelm@44967
   670
  ISABELLE_OCAML  (formerly EXEC_OCAML)
wenzelm@44967
   671
  ISABELLE_SWIPL  (formerly EXEC_SWIPL)
wenzelm@44967
   672
  ISABELLE_YAP    (formerly EXEC_YAP)
wenzelm@44967
   673
wenzelm@44967
   674
Note that automated detection from the file-system or search path has
wenzelm@44967
   675
been discontinued.  INCOMPATIBILITY.
wenzelm@44967
   676
wenzelm@43752
   677
* Scala layer provides JVM method invocation service for static
wenzelm@44800
   678
methods of type (String)String, see Invoke_Scala.method in ML.  For
wenzelm@44800
   679
example:
wenzelm@43752
   680
wenzelm@43752
   681
  Invoke_Scala.method "java.lang.System.getProperty" "java.home"
wenzelm@43752
   682
wenzelm@44967
   683
Together with YXML.string_of_body/parse_body and XML.Encode/Decode
wenzelm@44967
   684
this allows to pass structured values between ML and Scala.
wenzelm@44800
   685
wenzelm@44803
   686
* The IsabelleText fonts includes some further glyphs to support the
wenzelm@44803
   687
Prover IDE.  Potential INCOMPATIBILITY: users who happen to have
wenzelm@44803
   688
installed a local copy (which is normally *not* required) need to
wenzelm@44803
   689
delete or update it from ~~/lib/fonts/.
wenzelm@41944
   690
wenzelm@41703
   691
wenzelm@45089
   692
wenzelm@41512
   693
New in Isabelle2011 (January 2011)
wenzelm@41512
   694
----------------------------------
wenzelm@37383
   695
wenzelm@37536
   696
*** General ***
wenzelm@37536
   697
wenzelm@41573
   698
* Experimental Prover IDE based on Isabelle/Scala and jEdit (see
wenzelm@41612
   699
src/Tools/jEdit).  This also serves as IDE for Isabelle/ML, with
wenzelm@41612
   700
useful tooltips and hyperlinks produced from its static analysis.  The
wenzelm@41612
   701
bundled component provides an executable Isabelle tool that can be run
wenzelm@41612
   702
like this:
wenzelm@41612
   703
wenzelm@41612
   704
  Isabelle2011/bin/isabelle jedit
wenzelm@41573
   705
wenzelm@40948
   706
* Significantly improved Isabelle/Isar implementation manual.
wenzelm@40948
   707
wenzelm@41594
   708
* System settings: ISABELLE_HOME_USER now includes ISABELLE_IDENTIFIER
wenzelm@41595
   709
(and thus refers to something like $HOME/.isabelle/Isabelle2011),
wenzelm@41594
   710
while the default heap location within that directory lacks that extra
wenzelm@41594
   711
suffix.  This isolates multiple Isabelle installations from each
wenzelm@41594
   712
other, avoiding problems with old settings in new versions.
wenzelm@41594
   713
INCOMPATIBILITY, need to copy/upgrade old user settings manually.
wenzelm@41594
   714
wenzelm@40947
   715
* Source files are always encoded as UTF-8, instead of old-fashioned
wenzelm@40947
   716
ISO-Latin-1.  INCOMPATIBILITY.  Isabelle LaTeX documents might require
wenzelm@40948
   717
the following package declarations:
wenzelm@40947
   718
wenzelm@40947
   719
  \usepackage[utf8]{inputenc}
wenzelm@40947
   720
  \usepackage{textcomp}
wenzelm@40947
   721
krauss@41440
   722
* Explicit treatment of UTF-8 sequences as Isabelle symbols, such that
wenzelm@37536
   723
a Unicode character is treated as a single symbol, not a sequence of
wenzelm@37536
   724
non-ASCII bytes as before.  Since Isabelle/ML string literals may
wenzelm@37536
   725
contain symbols without further backslash escapes, Unicode can now be
wenzelm@37536
   726
used here as well.  Recall that Symbol.explode in ML provides a
wenzelm@37536
   727
consistent view on symbols, while raw explode (or String.explode)
wenzelm@37536
   728
merely give a byte-oriented representation.
wenzelm@37536
   729
wenzelm@41594
   730
* Theory loader: source files are primarily located via the master
wenzelm@41594
   731
directory of each theory node (where the .thy file itself resides).
wenzelm@41594
   732
The global load path is still partially available as legacy feature.
wenzelm@41594
   733
Minor INCOMPATIBILITY due to subtle change in file lookup: use
wenzelm@41594
   734
explicit paths, relatively to the theory.
wenzelm@38135
   735
wenzelm@37939
   736
* Special treatment of ML file names has been discontinued.
wenzelm@37939
   737
Historically, optional extensions .ML or .sml were added on demand --
wenzelm@37939
   738
at the cost of clarity of file dependencies.  Recall that Isabelle/ML
wenzelm@37939
   739
files exclusively use the .ML extension.  Minor INCOMPATIBILTY.
wenzelm@37939
   740
wenzelm@38980
   741
* Various options that affect pretty printing etc. are now properly
wenzelm@38767
   742
handled within the context via configuration options, instead of
wenzelm@40879
   743
unsynchronized references or print modes.  There are both ML Config.T
wenzelm@40879
   744
entities and Isar declaration attributes to access these.
wenzelm@38767
   745
wenzelm@39125
   746
  ML (Config.T)                 Isar (attribute)
wenzelm@39125
   747
wenzelm@39128
   748
  eta_contract                  eta_contract
wenzelm@39137
   749
  show_brackets                 show_brackets
wenzelm@39134
   750
  show_sorts                    show_sorts
wenzelm@39134
   751
  show_types                    show_types
wenzelm@39126
   752
  show_question_marks           show_question_marks
wenzelm@39126
   753
  show_consts                   show_consts
wenzelm@40879
   754
  show_abbrevs                  show_abbrevs
wenzelm@39126
   755
wenzelm@41379
   756
  Syntax.ast_trace              syntax_ast_trace
wenzelm@41379
   757
  Syntax.ast_stat               syntax_ast_stat
wenzelm@39126
   758
  Syntax.ambiguity_level        syntax_ambiguity_level
wenzelm@39126
   759
wenzelm@39126
   760
  Goal_Display.goals_limit      goals_limit
wenzelm@39126
   761
  Goal_Display.show_main_goal   show_main_goal
wenzelm@39126
   762
wenzelm@41379
   763
  Method.rule_trace             rule_trace
wenzelm@41379
   764
wenzelm@39125
   765
  Thy_Output.display            thy_output_display
wenzelm@39125
   766
  Thy_Output.quotes             thy_output_quotes
wenzelm@39125
   767
  Thy_Output.indent             thy_output_indent
wenzelm@39125
   768
  Thy_Output.source             thy_output_source
wenzelm@39125
   769
  Thy_Output.break              thy_output_break
wenzelm@39125
   770
krauss@41440
   771
Note that corresponding "..._default" references in ML may only be
wenzelm@38767
   772
changed globally at the ROOT session setup, but *not* within a theory.
wenzelm@40879
   773
The option "show_abbrevs" supersedes the former print mode
wenzelm@40879
   774
"no_abbrevs" with inverted meaning.
wenzelm@38767
   775
wenzelm@40878
   776
* More systematic naming of some configuration options.
huffman@41294
   777
INCOMPATIBILITY.
wenzelm@40878
   778
wenzelm@40878
   779
  trace_simp  ~>  simp_trace
wenzelm@40878
   780
  debug_simp  ~>  simp_debug
wenzelm@40878
   781
wenzelm@40291
   782
* Support for real valued configuration options, using simplistic
wenzelm@40291
   783
floating-point notation that coincides with the inner syntax for
wenzelm@40291
   784
float_token.
wenzelm@40291
   785
wenzelm@41594
   786
* Support for real valued preferences (with approximative PGIP type):
wenzelm@41594
   787
front-ends need to accept "pgint" values in float notation.
wenzelm@41594
   788
INCOMPATIBILITY.
wenzelm@41573
   789
wenzelm@41573
   790
* The IsabelleText font now includes Cyrillic, Hebrew, Arabic from
wenzelm@41573
   791
DejaVu Sans.
wenzelm@41573
   792
wenzelm@41594
   793
* Discontinued support for Poly/ML 5.0 and 5.1 versions.
wenzelm@41594
   794
wenzelm@40948
   795
wenzelm@40948
   796
*** Pure ***
wenzelm@40948
   797
wenzelm@41249
   798
* Command 'type_synonym' (with single argument) replaces somewhat
wenzelm@41249
   799
outdated 'types', which is still available as legacy feature for some
wenzelm@41249
   800
time.
wenzelm@41249
   801
wenzelm@41249
   802
* Command 'nonterminal' (with 'and' separated list of arguments)
wenzelm@41249
   803
replaces somewhat outdated 'nonterminals'.  INCOMPATIBILITY.
wenzelm@41229
   804
wenzelm@40965
   805
* Command 'notepad' replaces former 'example_proof' for
wenzelm@41020
   806
experimentation in Isar without any result.  INCOMPATIBILITY.
wenzelm@40965
   807
ballarin@41435
   808
* Locale interpretation commands 'interpret' and 'sublocale' accept
ballarin@41435
   809
lists of equations to map definitions in a locale to appropriate
ballarin@41435
   810
entities in the context of the interpretation.  The 'interpretation'
ballarin@41435
   811
command already provided this functionality.
ballarin@41435
   812
wenzelm@41594
   813
* Diagnostic command 'print_dependencies' prints the locale instances
wenzelm@41594
   814
that would be activated if the specified expression was interpreted in
wenzelm@41594
   815
the current context.  Variant "print_dependencies!" assumes a context
wenzelm@41594
   816
without interpretations.
ballarin@38110
   817
ballarin@38110
   818
* Diagnostic command 'print_interps' prints interpretations in proofs
ballarin@38110
   819
in addition to interpretations in theories.
ballarin@38110
   820
wenzelm@38708
   821
* Discontinued obsolete 'global' and 'local' commands to manipulate
wenzelm@38708
   822
the theory name space.  Rare INCOMPATIBILITY.  The ML functions
wenzelm@38708
   823
Sign.root_path and Sign.local_path may be applied directly where this
wenzelm@38708
   824
feature is still required for historical reasons.
wenzelm@38708
   825
wenzelm@40948
   826
* Discontinued obsolete 'constdefs' command.  INCOMPATIBILITY, use
haftmann@39215
   827
'definition' instead.
haftmann@39215
   828
wenzelm@41574
   829
* The "prems" fact, which refers to the accidental collection of
wenzelm@41574
   830
foundational premises in the context, is now explicitly marked as
wenzelm@41594
   831
legacy feature and will be discontinued soon.  Consider using "assms"
wenzelm@41594
   832
of the head statement or reference facts by explicit names.
wenzelm@41574
   833
wenzelm@40801
   834
* Document antiquotations @{class} and @{type} print classes and type
wenzelm@40801
   835
constructors.
wenzelm@40801
   836
wenzelm@40801
   837
* Document antiquotation @{file} checks file/directory entries within
wenzelm@40801
   838
the local file system.
haftmann@39305
   839
ballarin@38110
   840
haftmann@37387
   841
*** HOL ***
haftmann@37387
   842
wenzelm@41594
   843
* Coercive subtyping: functions can be declared as coercions and type
wenzelm@41594
   844
inference will add them as necessary upon input of a term.  Theory
wenzelm@41594
   845
Complex_Main declares real :: nat => real and real :: int => real as
wenzelm@41594
   846
coercions. A coercion function f is declared like this:
wenzelm@40939
   847
wenzelm@40939
   848
  declare [[coercion f]]
nipkow@40866
   849
wenzelm@41571
   850
To lift coercions through type constructors (e.g. from nat => real to
nipkow@40866
   851
nat list => real list), map functions can be declared, e.g.
nipkow@40866
   852
wenzelm@40939
   853
  declare [[coercion_map map]]
wenzelm@40939
   854
wenzelm@40939
   855
Currently coercion inference is activated only in theories including
wenzelm@40939
   856
real numbers, i.e. descendants of Complex_Main.  This is controlled by
wenzelm@41020
   857
the configuration option "coercion_enabled", e.g. it can be enabled in
wenzelm@40939
   858
other theories like this:
wenzelm@40939
   859
wenzelm@40939
   860
  declare [[coercion_enabled]]
nipkow@40866
   861
wenzelm@41571
   862
* Command 'partial_function' provides basic support for recursive
wenzelm@41571
   863
function definitions over complete partial orders.  Concrete instances
krauss@40183
   864
are provided for i) the option type, ii) tail recursion on arbitrary
wenzelm@41571
   865
types, and iii) the heap monad of Imperative_HOL.  See
wenzelm@41571
   866
src/HOL/ex/Fundefs.thy and src/HOL/Imperative_HOL/ex/Linked_Lists.thy
wenzelm@41571
   867
for examples.
krauss@40183
   868
wenzelm@41571
   869
* Function package: f.psimps rules are no longer implicitly declared
wenzelm@41571
   870
as [simp].  INCOMPATIBILITY.
haftmann@41398
   871
haftmann@41398
   872
* Datatype package: theorems generated for executable equality (class
wenzelm@41571
   873
"eq") carry proper names and are treated as default code equations.
wenzelm@41571
   874
wenzelm@41594
   875
* Inductive package: now offers command 'inductive_simps' to
wenzelm@41594
   876
automatically derive instantiated and simplified equations for
wenzelm@41594
   877
inductive predicates, similar to 'inductive_cases'.
wenzelm@41594
   878
wenzelm@41571
   879
* Command 'enriched_type' allows to register properties of the
wenzelm@41571
   880
functorial structure of types.
haftmann@39771
   881
haftmann@39644
   882
* Improved infrastructure for term evaluation using code generator
haftmann@39644
   883
techniques, in particular static evaluation conversions.
haftmann@39644
   884
wenzelm@41594
   885
* Code generator: Scala (2.8 or higher) has been added to the target
wenzelm@41594
   886
languages.
wenzelm@41594
   887
haftmann@41398
   888
* Code generator: globbing constant expressions "*" and "Theory.*"
haftmann@41398
   889
have been replaced by the more idiomatic "_" and "Theory._".
haftmann@41398
   890
INCOMPATIBILITY.
haftmann@41398
   891
haftmann@41398
   892
* Code generator: export_code without explicit file declaration prints
haftmann@41398
   893
to standard output.  INCOMPATIBILITY.
haftmann@41398
   894
haftmann@41398
   895
* Code generator: do not print function definitions for case
haftmann@41398
   896
combinators any longer.
haftmann@41398
   897
wenzelm@41594
   898
* Code generator: simplification with rules determined with
wenzelm@41571
   899
src/Tools/Code/code_simp.ML and method "code_simp".
wenzelm@41571
   900
wenzelm@41594
   901
* Code generator for records: more idiomatic representation of record
wenzelm@40948
   902
types.  Warning: records are not covered by ancient SML code
wenzelm@40948
   903
generation any longer.  INCOMPATIBILITY.  In cases of need, a suitable
wenzelm@40948
   904
rep_datatype declaration helps to succeed then:
haftmann@38537
   905
haftmann@38537
   906
  record 'a foo = ...
haftmann@38537
   907
  ...
haftmann@38537
   908
  rep_datatype foo_ext ...
haftmann@38535
   909
wenzelm@41594
   910
* Records: logical foundation type for records does not carry a
wenzelm@41594
   911
'_type' suffix any longer (obsolete due to authentic syntax).
wenzelm@41594
   912
INCOMPATIBILITY.
wenzelm@41594
   913
haftmann@41398
   914
* Quickcheck now by default uses exhaustive testing instead of random
wenzelm@41571
   915
testing.  Random testing can be invoked by "quickcheck [random]",
wenzelm@41571
   916
exhaustive testing by "quickcheck [exhaustive]".
haftmann@41398
   917
haftmann@41398
   918
* Quickcheck instantiates polymorphic types with small finite
haftmann@41398
   919
datatypes by default. This enables a simple execution mechanism to
haftmann@41398
   920
handle quantifiers and function equality over the finite datatypes.
haftmann@41398
   921
wenzelm@41571
   922
* Quickcheck random generator has been renamed from "code" to
wenzelm@41571
   923
"random".  INCOMPATIBILITY.
haftmann@41398
   924
haftmann@41398
   925
* Quickcheck now has a configurable time limit which is set to 30
haftmann@41398
   926
seconds by default. This can be changed by adding [timeout = n] to the
haftmann@41398
   927
quickcheck command. The time limit for Auto Quickcheck is still set
haftmann@41398
   928
independently.
haftmann@38461
   929
haftmann@38461
   930
* Quickcheck in locales considers interpretations of that locale for
haftmann@38461
   931
counter example search.
haftmann@38461
   932
blanchet@40059
   933
* Sledgehammer:
wenzelm@41571
   934
  - Added "smt" and "remote_smt" provers based on the "smt" proof
wenzelm@41571
   935
    method. See the Sledgehammer manual for details ("isabelle doc
wenzelm@41571
   936
    sledgehammer").
blanchet@40059
   937
  - Renamed commands:
blanchet@40059
   938
    sledgehammer atp_info ~> sledgehammer running_provers
blanchet@40059
   939
    sledgehammer atp_kill ~> sledgehammer kill_provers
blanchet@40059
   940
    sledgehammer available_atps ~> sledgehammer available_provers
blanchet@40059
   941
    INCOMPATIBILITY.
blanchet@40059
   942
  - Renamed options:
blanchet@40059
   943
    sledgehammer [atps = ...] ~> sledgehammer [provers = ...]
blanchet@40062
   944
    sledgehammer [atp = ...] ~> sledgehammer [prover = ...]
blanchet@40341
   945
    sledgehammer [timeout = 77 s] ~> sledgehammer [timeout = 77]
blanchet@40341
   946
    (and "ms" and "min" are no longer supported)
blanchet@40341
   947
    INCOMPATIBILITY.
blanchet@40341
   948
blanchet@40341
   949
* Nitpick:
blanchet@40341
   950
  - Renamed options:
blanchet@40341
   951
    nitpick [timeout = 77 s] ~> nitpick [timeout = 77]
blanchet@40341
   952
    nitpick [tac_timeout = 777 ms] ~> nitpick [tac_timeout = 0.777]
blanchet@40059
   953
    INCOMPATIBILITY.
blanchet@40725
   954
  - Added support for partial quotient types.
blanchet@40725
   955
  - Added local versions of the "Nitpick.register_xxx" functions.
blanchet@40725
   956
  - Added "whack" option.
blanchet@40725
   957
  - Allow registration of quotient types as codatatypes.
blanchet@40725
   958
  - Improved "merge_type_vars" option to merge more types.
blanchet@40725
   959
  - Removed unsound "fast_descrs" option.
blanchet@40725
   960
  - Added custom symmetry breaking for datatypes, making it possible to reach
blanchet@40725
   961
    higher cardinalities.
blanchet@40725
   962
  - Prevent the expansion of too large definitions.
blanchet@39957
   963
wenzelm@41571
   964
* Proof methods "metis" and "meson" now have configuration options
wenzelm@41571
   965
"meson_trace", "metis_trace", and "metis_verbose" that can be enabled
wenzelm@41571
   966
to diagnose these tools. E.g.
wenzelm@41571
   967
wenzelm@41571
   968
    using [[metis_trace = true]]
wenzelm@41571
   969
haftmann@41398
   970
* Auto Solve: Renamed "Auto Solve Direct".  The tool is now available
haftmann@41398
   971
manually as command 'solve_direct'.
haftmann@41398
   972
boehmes@41601
   973
* The default SMT solver Z3 must be enabled explicitly (due to
boehmes@41601
   974
licensing issues) by setting the environment variable
wenzelm@41603
   975
Z3_NON_COMMERCIAL in etc/settings of the component, for example.  For
wenzelm@41603
   976
commercial applications, the SMT solver CVC3 is provided as fall-back;
wenzelm@41603
   977
changing the SMT solver is done via the configuration option
wenzelm@41603
   978
"smt_solver".
boehmes@41432
   979
boehmes@41432
   980
* Remote SMT solvers need to be referred to by the "remote_" prefix,
wenzelm@41571
   981
i.e. "remote_cvc3" and "remote_z3".
wenzelm@41571
   982
wenzelm@41571
   983
* Added basic SMT support for datatypes, records, and typedefs using
wenzelm@41571
   984
the oracle mode (no proofs).  Direct support of pairs has been dropped
wenzelm@41571
   985
in exchange (pass theorems fst_conv snd_conv pair_collapse to the SMT
wenzelm@41571
   986
support for a similar behavior).  Minor INCOMPATIBILITY.
boehmes@41432
   987
boehmes@40162
   988
* Changed SMT configuration options:
boehmes@40162
   989
  - Renamed:
boehmes@41432
   990
    z3_proofs ~> smt_oracle (with inverted meaning)
boehmes@40162
   991
    z3_trace_assms ~> smt_trace_used_facts
boehmes@40162
   992
    INCOMPATIBILITY.
boehmes@40162
   993
  - Added:
boehmes@40424
   994
    smt_verbose
boehmes@41432
   995
    smt_random_seed
boehmes@40424
   996
    smt_datatypes
boehmes@41432
   997
    smt_infer_triggers
boehmes@41432
   998
    smt_monomorph_limit
boehmes@40162
   999
    cvc3_options
boehmes@41432
  1000
    remote_cvc3_options
boehmes@41432
  1001
    remote_z3_options
boehmes@40162
  1002
    yices_options
blanchet@39957
  1003
wenzelm@40948
  1004
* Boogie output files (.b2i files) need to be declared in the theory
wenzelm@40948
  1005
header.
boehmes@40580
  1006
wenzelm@41594
  1007
* Simplification procedure "list_to_set_comprehension" rewrites list
wenzelm@41594
  1008
comprehensions applied to List.set to set comprehensions.  Occasional
wenzelm@41594
  1009
INCOMPATIBILITY, may be deactivated like this:
wenzelm@41594
  1010
wenzelm@41594
  1011
  declare [[simproc del: list_to_set_comprehension]]
wenzelm@41594
  1012
wenzelm@41573
  1013
* Removed old version of primrec package.  INCOMPATIBILITY.
haftmann@41398
  1014
haftmann@41398
  1015
* Removed simplifier congruence rule of "prod_case", as has for long
haftmann@41398
  1016
been the case with "split".  INCOMPATIBILITY.
haftmann@41398
  1017
haftmann@41398
  1018
* String.literal is a type, but not a datatype.  INCOMPATIBILITY.
haftmann@41398
  1019
krauss@40388
  1020
* Removed [split_format ... and ... and ...] version of
krauss@40388
  1021
[split_format].  Potential INCOMPATIBILITY.
krauss@40388
  1022
wenzelm@41571
  1023
* Predicate "sorted" now defined inductively, with nice induction
wenzelm@41571
  1024
rules.  INCOMPATIBILITY: former sorted.simps now named sorted_simps.
haftmann@41398
  1025
haftmann@41398
  1026
* Constant "contents" renamed to "the_elem", to free the generic name
haftmann@41398
  1027
contents for other uses.  INCOMPATIBILITY.
haftmann@41398
  1028
haftmann@41398
  1029
* Renamed class eq and constant eq (for code generation) to class
haftmann@41398
  1030
equal and constant equal, plus renaming of related facts and various
haftmann@41398
  1031
tuning.  INCOMPATIBILITY.
haftmann@41398
  1032
haftmann@41398
  1033
* Dropped type classes mult_mono and mult_mono1.  INCOMPATIBILITY.
haftmann@41398
  1034
wenzelm@41571
  1035
* Removed output syntax "'a ~=> 'b" for "'a => 'b option".
wenzelm@41571
  1036
INCOMPATIBILITY.
haftmann@41398
  1037
haftmann@41398
  1038
* Renamed theory Fset to Cset, type Fset.fset to Cset.set, in order to
haftmann@41398
  1039
avoid confusion with finite sets.  INCOMPATIBILITY.
haftmann@41398
  1040
haftmann@41398
  1041
* Abandoned locales equiv, congruent and congruent2 for equivalence
haftmann@41398
  1042
relations.  INCOMPATIBILITY: use equivI rather than equiv_intro (same
haftmann@41398
  1043
for congruent(2)).
haftmann@41398
  1044
haftmann@41398
  1045
* Some previously unqualified names have been qualified:
haftmann@41398
  1046
haftmann@41398
  1047
  types
haftmann@41398
  1048
    bool ~> HOL.bool
haftmann@41398
  1049
    nat ~> Nat.nat
haftmann@41398
  1050
haftmann@41398
  1051
  constants
haftmann@41398
  1052
    Trueprop ~> HOL.Trueprop
haftmann@41398
  1053
    True ~> HOL.True
haftmann@41398
  1054
    False ~> HOL.False
haftmann@41398
  1055
    op & ~> HOL.conj
haftmann@41398
  1056
    op | ~> HOL.disj
haftmann@41398
  1057
    op --> ~> HOL.implies
haftmann@41398
  1058
    op = ~> HOL.eq
haftmann@41398
  1059
    Not ~> HOL.Not
haftmann@41398
  1060
    The ~> HOL.The
haftmann@41398
  1061
    All ~> HOL.All
haftmann@41398
  1062
    Ex ~> HOL.Ex
haftmann@41398
  1063
    Ex1 ~> HOL.Ex1
haftmann@41398
  1064
    Let ~> HOL.Let
haftmann@41398
  1065
    If ~> HOL.If
haftmann@41398
  1066
    Ball ~> Set.Ball
haftmann@41398
  1067
    Bex ~> Set.Bex
haftmann@41398
  1068
    Suc ~> Nat.Suc
haftmann@41398
  1069
    Pair ~> Product_Type.Pair
haftmann@41398
  1070
    fst ~> Product_Type.fst
haftmann@41398
  1071
    snd ~> Product_Type.snd
haftmann@41398
  1072
    curry ~> Product_Type.curry
haftmann@41398
  1073
    op : ~> Set.member
haftmann@41398
  1074
    Collect ~> Set.Collect
haftmann@41398
  1075
haftmann@41398
  1076
INCOMPATIBILITY.
haftmann@41398
  1077
haftmann@41398
  1078
* More canonical naming convention for some fundamental definitions:
haftmann@41398
  1079
haftmann@41398
  1080
    bot_bool_eq ~> bot_bool_def
haftmann@41398
  1081
    top_bool_eq ~> top_bool_def
haftmann@41398
  1082
    inf_bool_eq ~> inf_bool_def
haftmann@41398
  1083
    sup_bool_eq ~> sup_bool_def
haftmann@41398
  1084
    bot_fun_eq  ~> bot_fun_def
haftmann@41398
  1085
    top_fun_eq  ~> top_fun_def
haftmann@41398
  1086
    inf_fun_eq  ~> inf_fun_def
haftmann@41398
  1087
    sup_fun_eq  ~> sup_fun_def
haftmann@41398
  1088
haftmann@41398
  1089
INCOMPATIBILITY.
haftmann@41398
  1090
haftmann@41398
  1091
* More stylized fact names:
haftmann@41398
  1092
haftmann@41398
  1093
  expand_fun_eq ~> fun_eq_iff
haftmann@41398
  1094
  expand_set_eq ~> set_eq_iff
haftmann@41398
  1095
  set_ext       ~> set_eqI
haftmann@41398
  1096
  nat_number    ~> eval_nat_numeral
haftmann@41398
  1097
haftmann@41398
  1098
INCOMPATIBILITY.
haftmann@41398
  1099
wenzelm@41571
  1100
* Refactoring of code-generation specific operations in theory List:
haftmann@41398
  1101
haftmann@41398
  1102
  constants
haftmann@41398
  1103
    null ~> List.null
haftmann@41398
  1104
haftmann@41398
  1105
  facts
haftmann@41398
  1106
    mem_iff ~> member_def
haftmann@41398
  1107
    null_empty ~> null_def
haftmann@41398
  1108
haftmann@41398
  1109
INCOMPATIBILITY.  Note that these were not supposed to be used
haftmann@41398
  1110
regularly unless for striking reasons; their main purpose was code
haftmann@41398
  1111
generation.
haftmann@41398
  1112
haftmann@41398
  1113
Various operations from the Haskell prelude are used for generating
haftmann@41398
  1114
Haskell code.
haftmann@41398
  1115
wenzelm@41571
  1116
* Term "bij f" is now an abbreviation of "bij_betw f UNIV UNIV".  Term
wenzelm@41571
  1117
"surj f" is now an abbreviation of "range f = UNIV".  The theorems
wenzelm@41571
  1118
bij_def and surj_def are unchanged.  INCOMPATIBILITY.
haftmann@41398
  1119
haftmann@41398
  1120
* Abolished some non-alphabetic type names: "prod" and "sum" replace
haftmann@41398
  1121
"*" and "+" respectively.  INCOMPATIBILITY.
haftmann@41398
  1122
haftmann@41398
  1123
* Name "Plus" of disjoint sum operator "<+>" is now hidden.  Write
wenzelm@41571
  1124
"Sum_Type.Plus" instead.
haftmann@41398
  1125
haftmann@41398
  1126
* Constant "split" has been merged with constant "prod_case"; names of
haftmann@41398
  1127
ML functions, facts etc. involving split have been retained so far,
haftmann@41398
  1128
though.  INCOMPATIBILITY.
haftmann@41398
  1129
haftmann@41398
  1130
* Dropped old infix syntax "_ mem _" for List.member; use "_ : set _"
haftmann@41398
  1131
instead.  INCOMPATIBILITY.
haftmann@41398
  1132
wenzelm@41571
  1133
* Removed lemma "Option.is_none_none" which duplicates "is_none_def".
haftmann@41398
  1134
INCOMPATIBILITY.
haftmann@41398
  1135
wenzelm@41594
  1136
* Former theory Library/Enum is now part of the HOL-Main image.
wenzelm@41594
  1137
INCOMPATIBILITY: all constants of the Enum theory now have to be
wenzelm@41594
  1138
referred to by its qualified name.
wenzelm@41594
  1139
wenzelm@41594
  1140
  enum    ~>  Enum.enum
wenzelm@41594
  1141
  nlists  ~>  Enum.nlists
wenzelm@41594
  1142
  product ~>  Enum.product
wenzelm@41594
  1143
wenzelm@41594
  1144
* Theory Library/Monad_Syntax provides do-syntax for monad types.
wenzelm@41594
  1145
Syntax in Library/State_Monad has been changed to avoid ambiguities.
wenzelm@41594
  1146
INCOMPATIBILITY.
wenzelm@41594
  1147
wenzelm@41594
  1148
* Theory Library/SetsAndFunctions has been split into
wenzelm@41594
  1149
Library/Function_Algebras and Library/Set_Algebras; canonical names
wenzelm@41594
  1150
for instance definitions for functions; various improvements.
wenzelm@41594
  1151
INCOMPATIBILITY.
wenzelm@41594
  1152
wenzelm@41594
  1153
* Theory Library/Multiset provides stable quicksort implementation of
wenzelm@41594
  1154
sort_key.
wenzelm@41594
  1155
wenzelm@41594
  1156
* Theory Library/Multiset: renamed empty_idemp ~> empty_neutral.
wenzelm@41594
  1157
INCOMPATIBILITY.
wenzelm@41594
  1158
wenzelm@41594
  1159
* Session Multivariate_Analysis: introduced a type class for euclidean
wenzelm@41594
  1160
space.  Most theorems are now stated in terms of euclidean spaces
wenzelm@41594
  1161
instead of finite cartesian products.
wenzelm@41594
  1162
wenzelm@41594
  1163
  types
wenzelm@41594
  1164
    real ^ 'n ~>  'a::real_vector
wenzelm@41594
  1165
              ~>  'a::euclidean_space
wenzelm@41594
  1166
              ~>  'a::ordered_euclidean_space
wenzelm@41594
  1167
        (depends on your needs)
wenzelm@41594
  1168
wenzelm@41594
  1169
  constants
wenzelm@41594
  1170
     _ $ _        ~> _ $$ _
wenzelm@41594
  1171
     \<chi> x. _  ~> \<chi>\<chi> x. _
wenzelm@41594
  1172
     CARD('n)     ~> DIM('a)
wenzelm@41594
  1173
wenzelm@41594
  1174
Also note that the indices are now natural numbers and not from some
wenzelm@41594
  1175
finite type. Finite cartesian products of euclidean spaces, products
wenzelm@41594
  1176
of euclidean spaces the real and complex numbers are instantiated to
wenzelm@41594
  1177
be euclidean_spaces.  INCOMPATIBILITY.
wenzelm@41594
  1178
wenzelm@41594
  1179
* Session Probability: introduced pextreal as positive extended real
wenzelm@41594
  1180
numbers.  Use pextreal as value for measures.  Introduce the
wenzelm@41594
  1181
Radon-Nikodym derivative, product spaces and Fubini's theorem for
wenzelm@41594
  1182
arbitrary sigma finite measures.  Introduces Lebesgue measure based on
wenzelm@41594
  1183
the integral in Multivariate Analysis.  INCOMPATIBILITY.
wenzelm@41594
  1184
wenzelm@41594
  1185
* Session Imperative_HOL: revamped, corrected dozens of inadequacies.
wenzelm@41594
  1186
INCOMPATIBILITY.
wenzelm@41594
  1187
wenzelm@41594
  1188
* Session SPARK (with image HOL-SPARK) provides commands to load and
wenzelm@41594
  1189
prove verification conditions generated by the SPARK Ada program
wenzelm@41594
  1190
verifier.  See also src/HOL/SPARK and src/HOL/SPARK/Examples.
berghofe@41567
  1191
huffman@40621
  1192
ballarin@41433
  1193
*** HOL-Algebra ***
ballarin@41433
  1194
ballarin@41433
  1195
* Theorems for additive ring operations (locale abelian_monoid and
ballarin@41433
  1196
descendants) are generated by interpretation from their multiplicative
ballarin@41434
  1197
counterparts.  Names (in particular theorem names) have the mandatory
ballarin@41434
  1198
qualifier 'add'.  Previous theorem names are redeclared for
ballarin@41434
  1199
compatibility.
ballarin@41434
  1200
wenzelm@41571
  1201
* Structure "int_ring" is now an abbreviation (previously a
ballarin@41434
  1202
definition).  This fits more natural with advanced interpretations.
ballarin@41433
  1203
ballarin@41433
  1204
huffman@40621
  1205
*** HOLCF ***
huffman@40621
  1206
huffman@40621
  1207
* The domain package now runs in definitional mode by default: The
wenzelm@41571
  1208
former command 'new_domain' is now called 'domain'.  To use the domain
huffman@40621
  1209
package in its original axiomatic mode, use 'domain (unsafe)'.
huffman@40621
  1210
INCOMPATIBILITY.
huffman@40621
  1211
wenzelm@41571
  1212
* The new class "domain" is now the default sort.  Class "predomain"
wenzelm@41571
  1213
is an unpointed version of "domain". Theories can be updated by
wenzelm@41571
  1214
replacing sort annotations as shown below.  INCOMPATIBILITY.
huffman@40621
  1215
huffman@40621
  1216
  'a::type ~> 'a::countable
huffman@40621
  1217
  'a::cpo  ~> 'a::predomain
huffman@40621
  1218
  'a::pcpo ~> 'a::domain
huffman@40621
  1219
wenzelm@41571
  1220
* The old type class "rep" has been superseded by class "domain".
huffman@40621
  1221
Accordingly, users of the definitional package must remove any
wenzelm@41571
  1222
"default_sort rep" declarations.  INCOMPATIBILITY.
huffman@40621
  1223
huffman@41401
  1224
* The domain package (definitional mode) now supports unpointed
huffman@41401
  1225
predomain argument types, as long as they are marked 'lazy'. (Strict
wenzelm@41571
  1226
arguments must be in class "domain".) For example, the following
huffman@41401
  1227
domain definition now works:
huffman@41401
  1228
huffman@41401
  1229
  domain natlist = nil | cons (lazy "nat discr") (lazy "natlist")
huffman@41401
  1230
huffman@41401
  1231
* Theory HOLCF/Library/HOL_Cpo provides cpo and predomain class
wenzelm@41571
  1232
instances for types from main HOL: bool, nat, int, char, 'a + 'b,
wenzelm@41571
  1233
'a option, and 'a list.  Additionally, it configures fixrec and the
wenzelm@41571
  1234
domain package to work with these types.  For example:
huffman@41401
  1235
huffman@41401
  1236
  fixrec isInl :: "('a + 'b) u -> tr"
huffman@41401
  1237
    where "isInl$(up$(Inl x)) = TT" | "isInl$(up$(Inr y)) = FF"
huffman@41401
  1238
huffman@41401
  1239
  domain V = VFun (lazy "V -> V") | VCon (lazy "nat") (lazy "V list")
huffman@41401
  1240
wenzelm@41571
  1241
* The "(permissive)" option of fixrec has been replaced with a
wenzelm@41571
  1242
per-equation "(unchecked)" option. See
wenzelm@41571
  1243
src/HOL/HOLCF/Tutorial/Fixrec_ex.thy for examples. INCOMPATIBILITY.
wenzelm@41571
  1244
wenzelm@41571
  1245
* The "bifinite" class no longer fixes a constant "approx"; the class
wenzelm@41571
  1246
now just asserts that such a function exists.  INCOMPATIBILITY.
wenzelm@41571
  1247
wenzelm@41571
  1248
* Former type "alg_defl" has been renamed to "defl".  HOLCF no longer
huffman@41287
  1249
defines an embedding of type 'a defl into udom by default; instances
wenzelm@41571
  1250
of "bifinite" and "domain" classes are available in
wenzelm@41571
  1251
src/HOL/HOLCF/Library/Defl_Bifinite.thy.
wenzelm@41571
  1252
wenzelm@41571
  1253
* The syntax "REP('a)" has been replaced with "DEFL('a)".
wenzelm@41571
  1254
wenzelm@41571
  1255
* The predicate "directed" has been removed.  INCOMPATIBILITY.
wenzelm@41571
  1256
wenzelm@41571
  1257
* The type class "finite_po" has been removed.  INCOMPATIBILITY.
wenzelm@41571
  1258
wenzelm@41571
  1259
* The function "cprod_map" has been renamed to "prod_map".
huffman@41401
  1260
INCOMPATIBILITY.
huffman@41401
  1261
huffman@41401
  1262
* The monadic bind operator on each powerdomain has new binder syntax
wenzelm@41571
  1263
similar to sets, e.g. "\<Union>\<sharp>x\<in>xs. t" represents
wenzelm@41571
  1264
"upper_bind\<cdot>xs\<cdot>(\<Lambda> x. t)".
huffman@41401
  1265
huffman@41401
  1266
* The infix syntax for binary union on each powerdomain has changed
wenzelm@41571
  1267
from e.g. "+\<sharp>" to "\<union>\<sharp>", for consistency with set
wenzelm@41571
  1268
syntax.  INCOMPATIBILITY.
wenzelm@41571
  1269
wenzelm@41571
  1270
* The constant "UU" has been renamed to "bottom".  The syntax "UU" is
huffman@41429
  1271
still supported as an input translation.
huffman@41429
  1272
huffman@40621
  1273
* Renamed some theorems (the original names are also still available).
wenzelm@41571
  1274
huffman@40621
  1275
  expand_fun_below   ~> fun_below_iff
huffman@40621
  1276
  below_fun_ext      ~> fun_belowI
huffman@40621
  1277
  expand_cfun_eq     ~> cfun_eq_iff
huffman@40621
  1278
  ext_cfun           ~> cfun_eqI
huffman@40621
  1279
  expand_cfun_below  ~> cfun_below_iff
huffman@40621
  1280
  below_cfun_ext     ~> cfun_belowI
huffman@40621
  1281
  cont2cont_Rep_CFun ~> cont2cont_APP
huffman@40621
  1282
huffman@40621
  1283
* The Abs and Rep functions for various types have changed names.
wenzelm@40948
  1284
Related theorem names have also changed to match. INCOMPATIBILITY.
wenzelm@41571
  1285
huffman@40621
  1286
  Rep_CFun  ~> Rep_cfun
huffman@40621
  1287
  Abs_CFun  ~> Abs_cfun
huffman@40621
  1288
  Rep_Sprod ~> Rep_sprod
huffman@40621
  1289
  Abs_Sprod ~> Abs_sprod
huffman@40621
  1290
  Rep_Ssum  ~> Rep_ssum
huffman@40621
  1291
  Abs_Ssum  ~> Abs_ssum
huffman@40621
  1292
huffman@40621
  1293
* Lemmas with names of the form *_defined_iff or *_strict_iff have
wenzelm@41571
  1294
been renamed to *_bottom_iff.  INCOMPATIBILITY.
huffman@40621
  1295
huffman@40621
  1296
* Various changes to bisimulation/coinduction with domain package:
wenzelm@41571
  1297
wenzelm@41571
  1298
  - Definitions of "bisim" constants no longer mention definedness.
wenzelm@41571
  1299
  - With mutual recursion, "bisim" predicate is now curried.
huffman@40621
  1300
  - With mutual recursion, each type gets a separate coind theorem.
huffman@40621
  1301
  - Variable names in bisim_def and coinduct rules have changed.
wenzelm@41571
  1302
huffman@40621
  1303
INCOMPATIBILITY.
huffman@40621
  1304
wenzelm@41571
  1305
* Case combinators generated by the domain package for type "foo" are
wenzelm@41571
  1306
now named "foo_case" instead of "foo_when".  INCOMPATIBILITY.
huffman@40621
  1307
huffman@40771
  1308
* Several theorems have been renamed to more accurately reflect the
wenzelm@41571
  1309
names of constants and types involved.  INCOMPATIBILITY.
wenzelm@41571
  1310
huffman@40771
  1311
  thelub_const    ~> lub_const
huffman@40771
  1312
  lub_const       ~> is_lub_const
huffman@40771
  1313
  thelubI         ~> lub_eqI
huffman@40771
  1314
  is_lub_lub      ~> is_lubD2
huffman@40771
  1315
  lubI            ~> is_lub_lub
huffman@40771
  1316
  unique_lub      ~> is_lub_unique
huffman@40771
  1317
  is_ub_lub       ~> is_lub_rangeD1
huffman@40771
  1318
  lub_bin_chain   ~> is_lub_bin_chain
huffman@41030
  1319
  lub_fun         ~> is_lub_fun
huffman@41030
  1320
  thelub_fun      ~> lub_fun
huffman@41031
  1321
  thelub_cfun     ~> lub_cfun
huffman@40771
  1322
  thelub_Pair     ~> lub_Pair
huffman@40771
  1323
  lub_cprod       ~> is_lub_prod
huffman@40771
  1324
  thelub_cprod    ~> lub_prod
huffman@40771
  1325
  minimal_cprod   ~> minimal_prod
huffman@40771
  1326
  inst_cprod_pcpo ~> inst_prod_pcpo
huffman@41430
  1327
  UU_I            ~> bottomI
huffman@41430
  1328
  compact_UU      ~> compact_bottom
huffman@41430
  1329
  deflation_UU    ~> deflation_bottom
huffman@41430
  1330
  finite_deflation_UU ~> finite_deflation_bottom
huffman@40771
  1331
wenzelm@41571
  1332
* Many legacy theorem names have been discontinued.  INCOMPATIBILITY.
wenzelm@41571
  1333
huffman@40621
  1334
  sq_ord_less_eq_trans ~> below_eq_trans
huffman@40621
  1335
  sq_ord_eq_less_trans ~> eq_below_trans
huffman@40621
  1336
  refl_less            ~> below_refl
huffman@40621
  1337
  trans_less           ~> below_trans
huffman@40621
  1338
  antisym_less         ~> below_antisym
huffman@40621
  1339
  antisym_less_inverse ~> po_eq_conv [THEN iffD1]
huffman@40621
  1340
  box_less             ~> box_below
huffman@40621
  1341
  rev_trans_less       ~> rev_below_trans
huffman@40621
  1342
  not_less2not_eq      ~> not_below2not_eq
huffman@40621
  1343
  less_UU_iff          ~> below_UU_iff
huffman@40621
  1344
  flat_less_iff        ~> flat_below_iff
huffman@40621
  1345
  adm_less             ~> adm_below
huffman@40621
  1346
  adm_not_less         ~> adm_not_below
huffman@40621
  1347
  adm_compact_not_less ~> adm_compact_not_below
huffman@40621
  1348
  less_fun_def         ~> below_fun_def
huffman@40621
  1349
  expand_fun_less      ~> fun_below_iff
huffman@40621
  1350
  less_fun_ext         ~> fun_belowI
huffman@40621
  1351
  less_discr_def       ~> below_discr_def
huffman@40621
  1352
  discr_less_eq        ~> discr_below_eq
huffman@40621
  1353
  less_unit_def        ~> below_unit_def
huffman@40621
  1354
  less_cprod_def       ~> below_prod_def
huffman@40621
  1355
  prod_lessI           ~> prod_belowI
huffman@40621
  1356
  Pair_less_iff        ~> Pair_below_iff
huffman@40621
  1357
  fst_less_iff         ~> fst_below_iff
huffman@40621
  1358
  snd_less_iff         ~> snd_below_iff
huffman@40621
  1359
  expand_cfun_less     ~> cfun_below_iff
huffman@40621
  1360
  less_cfun_ext        ~> cfun_belowI
huffman@40621
  1361
  injection_less       ~> injection_below
huffman@40621
  1362
  less_up_def          ~> below_up_def
huffman@40621
  1363
  not_Iup_less         ~> not_Iup_below
huffman@40621
  1364
  Iup_less             ~> Iup_below
huffman@40621
  1365
  up_less              ~> up_below
huffman@40621
  1366
  Def_inject_less_eq   ~> Def_below_Def
huffman@40621
  1367
  Def_less_is_eq       ~> Def_below_iff
huffman@40621
  1368
  spair_less_iff       ~> spair_below_iff
huffman@40621
  1369
  less_sprod           ~> below_sprod
huffman@40621
  1370
  spair_less           ~> spair_below
huffman@40621
  1371
  sfst_less_iff        ~> sfst_below_iff
huffman@40621
  1372
  ssnd_less_iff        ~> ssnd_below_iff
huffman@40621
  1373
  fix_least_less       ~> fix_least_below
huffman@40621
  1374
  dist_less_one        ~> dist_below_one
huffman@40621
  1375
  less_ONE             ~> below_ONE
huffman@40621
  1376
  ONE_less_iff         ~> ONE_below_iff
huffman@40621
  1377
  less_sinlD           ~> below_sinlD
huffman@40621
  1378
  less_sinrD           ~> below_sinrD
huffman@40621
  1379
huffman@40621
  1380
wenzelm@40948
  1381
*** FOL and ZF ***
haftmann@38522
  1382
wenzelm@41310
  1383
* All constant names are now qualified internally and use proper
wenzelm@41310
  1384
identifiers, e.g. "IFOL.eq" instead of "op =".  INCOMPATIBILITY.
wenzelm@41310
  1385
haftmann@38522
  1386
wenzelm@37868
  1387
*** ML ***
wenzelm@37868
  1388
wenzelm@41594
  1389
* Antiquotation @{assert} inlines a function bool -> unit that raises
wenzelm@41594
  1390
Fail if the argument is false.  Due to inlining the source position of
wenzelm@41594
  1391
failed assertions is included in the error output.
wenzelm@41594
  1392
wenzelm@41594
  1393
* Discontinued antiquotation @{theory_ref}, which is obsolete since ML
wenzelm@41594
  1394
text is in practice always evaluated with a stable theory checkpoint.
wenzelm@41594
  1395
Minor INCOMPATIBILITY, use (Theory.check_thy @{theory}) instead.
wenzelm@41594
  1396
wenzelm@41594
  1397
* Antiquotation @{theory A} refers to theory A from the ancestry of
wenzelm@41594
  1398
the current context, not any accidental theory loader state as before.
wenzelm@41594
  1399
Potential INCOMPATIBILITY, subtle change in semantics.
wenzelm@41228
  1400
wenzelm@40956
  1401
* Syntax.pretty_priority (default 0) configures the required priority
wenzelm@40956
  1402
of pretty-printed output and thus affects insertion of parentheses.
wenzelm@40956
  1403
wenzelm@40959
  1404
* Syntax.default_root (default "any") configures the inner syntax
wenzelm@40959
  1405
category (nonterminal symbol) for parsing of terms.
wenzelm@40959
  1406
wenzelm@40722
  1407
* Former exception Library.UnequalLengths now coincides with
wenzelm@40722
  1408
ListPair.UnequalLengths.
wenzelm@40722
  1409
wenzelm@41594
  1410
* Renamed structure MetaSimplifier to Raw_Simplifier.  Note that the
wenzelm@41594
  1411
main functionality is provided by structure Simplifier.
wenzelm@41594
  1412
wenzelm@40627
  1413
* Renamed raw "explode" function to "raw_explode" to emphasize its
wenzelm@40627
  1414
meaning.  Note that internally to Isabelle, Symbol.explode is used in
wenzelm@40627
  1415
almost all situations.
wenzelm@40627
  1416
wenzelm@40318
  1417
* Discontinued obsolete function sys_error and exception SYS_ERROR.
wenzelm@40318
  1418
See implementation manual for further details on exceptions in
wenzelm@40318
  1419
Isabelle/ML.
wenzelm@40318
  1420
wenzelm@39616
  1421
* Renamed setmp_noncritical to Unsynchronized.setmp to emphasize its
wenzelm@39616
  1422
meaning.
wenzelm@39616
  1423
wenzelm@39557
  1424
* Renamed structure PureThy to Pure_Thy and moved most of its
wenzelm@39557
  1425
operations to structure Global_Theory, to emphasize that this is
wenzelm@39557
  1426
rarely-used global-only stuff.
wenzelm@39557
  1427
wenzelm@39513
  1428
* Discontinued Output.debug.  Minor INCOMPATIBILITY, use plain writeln
wenzelm@39513
  1429
instead (or tracing for high-volume output).
wenzelm@39513
  1430
wenzelm@38980
  1431
* Configuration option show_question_marks only affects regular pretty
wenzelm@38980
  1432
printing of types and terms, not raw Term.string_of_vname.
wenzelm@38980
  1433
wenzelm@39164
  1434
* ML_Context.thm and ML_Context.thms are no longer pervasive.  Rare
wenzelm@39164
  1435
INCOMPATIBILITY, superseded by static antiquotations @{thm} and
wenzelm@39164
  1436
@{thms} for most purposes.
wenzelm@39164
  1437
wenzelm@41594
  1438
* ML structure Unsynchronized is never opened, not even in Isar
wenzelm@38980
  1439
interaction mode as before.  Old Unsynchronized.set etc. have been
wenzelm@38980
  1440
discontinued -- use plain := instead.  This should be *rare* anyway,
wenzelm@38980
  1441
since modern tools always work via official context data, notably
wenzelm@38980
  1442
configuration options.
wenzelm@38980
  1443
wenzelm@39239
  1444
* Parallel and asynchronous execution requires special care concerning
wenzelm@39239
  1445
interrupts.  Structure Exn provides some convenience functions that
wenzelm@39239
  1446
avoid working directly with raw Interrupt.  User code must not absorb
wenzelm@39239
  1447
interrupts -- intermediate handling (for cleanup etc.) needs to be
wenzelm@39239
  1448
followed by re-raising of the original exception.  Another common
wenzelm@39239
  1449
source of mistakes are "handle _" patterns, which make the meaning of
wenzelm@39239
  1450
the program subject to physical effects of the environment.
wenzelm@39239
  1451
wenzelm@37868
  1452
wenzelm@37868
  1453
wenzelm@37144
  1454
New in Isabelle2009-2 (June 2010)
wenzelm@37144
  1455
---------------------------------
haftmann@33993
  1456
wenzelm@35260
  1457
*** General ***
wenzelm@35260
  1458
wenzelm@35436
  1459
* Authentic syntax for *all* logical entities (type classes, type
wenzelm@35436
  1460
constructors, term constants): provides simple and robust
wenzelm@35436
  1461
correspondence between formal entities and concrete syntax.  Within
wenzelm@35436
  1462
the parse tree / AST representations, "constants" are decorated by
wenzelm@35436
  1463
their category (class, type, const) and spelled out explicitly with
wenzelm@35436
  1464
their full internal name.
wenzelm@35436
  1465
wenzelm@35436
  1466
Substantial INCOMPATIBILITY concerning low-level syntax declarations
wenzelm@35436
  1467
and translations (translation rules and translation functions in ML).
wenzelm@35436
  1468
Some hints on upgrading:
wenzelm@35260
  1469
wenzelm@35260
  1470
  - Many existing uses of 'syntax' and 'translations' can be replaced
wenzelm@35436
  1471
    by more modern 'type_notation', 'notation' and 'abbreviation',
wenzelm@35436
  1472
    which are independent of this issue.
wenzelm@35260
  1473
wenzelm@35260
  1474
  - 'translations' require markup within the AST; the term syntax
wenzelm@35260
  1475
    provides the following special forms:
wenzelm@35260
  1476
wenzelm@35260
  1477
      CONST c   -- produces syntax version of constant c from context
wenzelm@35261
  1478
      XCONST c  -- literally c, checked as constant from context
wenzelm@35261
  1479
      c         -- literally c, if declared by 'syntax'
wenzelm@35261
  1480
wenzelm@35261
  1481
    Plain identifiers are treated as AST variables -- occasionally the
wenzelm@35261
  1482
    system indicates accidental variables via the error "rhs contains
wenzelm@35261
  1483
    extra variables".
wenzelm@35260
  1484
wenzelm@35436
  1485
    Type classes and type constructors are marked according to their
wenzelm@35436
  1486
    concrete syntax.  Some old translations rules need to be written
wenzelm@35436
  1487
    for the "type" category, using type constructor application
wenzelm@35436
  1488
    instead of pseudo-term application of the default category
wenzelm@35436
  1489
    "logic".
wenzelm@35436
  1490
wenzelm@35260
  1491
  - 'parse_translation' etc. in ML may use the following
wenzelm@35260
  1492
    antiquotations:
wenzelm@35260
  1493
wenzelm@35436
  1494
      @{class_syntax c}   -- type class c within parse tree / AST
wenzelm@35436
  1495
      @{term_syntax c}    -- type constructor c within parse tree / AST
wenzelm@35260
  1496
      @{const_syntax c}   -- ML version of "CONST c" above
wenzelm@35260
  1497
      @{syntax_const c}   -- literally c (checked wrt. 'syntax' declarations)
wenzelm@35260
  1498
wenzelm@35436
  1499
  - Literal types within 'typed_print_translations', i.e. those *not*
wenzelm@35436
  1500
    represented as pseudo-terms are represented verbatim.  Use @{class
wenzelm@35436
  1501
    c} or @{type_name c} here instead of the above syntax
wenzelm@35436
  1502
    antiquotations.
wenzelm@35436
  1503
wenzelm@35260
  1504
Note that old non-authentic syntax was based on unqualified base
wenzelm@35436
  1505
names, so all of the above "constant" names would coincide.  Recall
wenzelm@35436
  1506
that 'print_syntax' and ML_command "set Syntax.trace_ast" help to
wenzelm@35436
  1507
diagnose syntax problems.
wenzelm@35260
  1508
wenzelm@35351
  1509
* Type constructors admit general mixfix syntax, not just infix.
wenzelm@35351
  1510
wenzelm@36508
  1511
* Concrete syntax may be attached to local entities without a proof
wenzelm@36508
  1512
body, too.  This works via regular mixfix annotations for 'fix',
wenzelm@36508
  1513
'def', 'obtain' etc. or via the explicit 'write' command, which is
wenzelm@36508
  1514
similar to the 'notation' command in theory specifications.
wenzelm@36508
  1515
wenzelm@37351
  1516
* Discontinued unnamed infix syntax (legacy feature for many years) --
wenzelm@37351
  1517
need to specify constant name and syntax separately.  Internal ML
wenzelm@37351
  1518
datatype constructors have been renamed from InfixName to Infix etc.
wenzelm@37351
  1519
Minor INCOMPATIBILITY.
wenzelm@37351
  1520
wenzelm@37351
  1521
* Schematic theorem statements need to be explicitly markup as such,
wenzelm@37351
  1522
via commands 'schematic_lemma', 'schematic_theorem',
wenzelm@37351
  1523
'schematic_corollary'.  Thus the relevance of the proof is made
wenzelm@37351
  1524
syntactically clear, which impacts performance in a parallel or
wenzelm@37351
  1525
asynchronous interactive environment.  Minor INCOMPATIBILITY.
wenzelm@37351
  1526
wenzelm@35613
  1527
* Use of cumulative prems via "!" in some proof methods has been
wenzelm@37351
  1528
discontinued (old legacy feature).
wenzelm@35613
  1529
boehmes@35979
  1530
* References 'trace_simp' and 'debug_simp' have been replaced by
wenzelm@36857
  1531
configuration options stored in the context. Enabling tracing (the
wenzelm@36857
  1532
case of debugging is similar) in proofs works via
wenzelm@36857
  1533
wenzelm@36857
  1534
  using [[trace_simp = true]]
wenzelm@36857
  1535
wenzelm@36857
  1536
Tracing is then active for all invocations of the simplifier in
wenzelm@36857
  1537
subsequent goal refinement steps. Tracing may also still be enabled or
wenzelm@40780
  1538
disabled via the ProofGeneral settings menu.
boehmes@35979
  1539
wenzelm@36177
  1540
* Separate commands 'hide_class', 'hide_type', 'hide_const',
wenzelm@36177
  1541
'hide_fact' replace the former 'hide' KIND command.  Minor
wenzelm@36177
  1542
INCOMPATIBILITY.
wenzelm@36177
  1543
wenzelm@37298
  1544
* Improved parallelism of proof term normalization: usedir -p2 -q0 is
wenzelm@37298
  1545
more efficient than combinations with -q1 or -q2.
wenzelm@37298
  1546
wenzelm@35260
  1547
haftmann@34170
  1548
*** Pure ***
haftmann@34170
  1549
wenzelm@37351
  1550
* Proofterms record type-class reasoning explicitly, using the
wenzelm@37351
  1551
"unconstrain" operation internally.  This eliminates all sort
wenzelm@37351
  1552
constraints from a theorem and proof, introducing explicit
wenzelm@37351
  1553
OFCLASS-premises.  On the proof term level, this operation is
wenzelm@37351
  1554
automatically applied at theorem boundaries, such that closed proofs
wenzelm@37351
  1555
are always free of sort constraints.  INCOMPATIBILITY for tools that
wenzelm@37351
  1556
inspect proof terms.
haftmann@36147
  1557
wenzelm@35765
  1558
* Local theory specifications may depend on extra type variables that
wenzelm@35765
  1559
are not present in the result type -- arguments TYPE('a) :: 'a itself
wenzelm@35765
  1560
are added internally.  For example:
wenzelm@35765
  1561
wenzelm@35765
  1562
  definition unitary :: bool where "unitary = (ALL (x::'a) y. x = y)"
wenzelm@35765
  1563
wenzelm@37351
  1564
* Predicates of locales introduced by classes carry a mandatory
wenzelm@37351
  1565
"class" prefix.  INCOMPATIBILITY.
wenzelm@37351
  1566
wenzelm@37351
  1567
* Vacuous class specifications observe default sort.  INCOMPATIBILITY.
wenzelm@37351
  1568
wenzelm@37351
  1569
* Old 'axclass' command has been discontinued.  INCOMPATIBILITY, use
wenzelm@37351
  1570
'class' instead.
wenzelm@37351
  1571
wenzelm@37351
  1572
* Command 'code_reflect' allows to incorporate generated ML code into
wenzelm@37351
  1573
runtime environment; replaces immature code_datatype antiquotation.
wenzelm@37351
  1574
INCOMPATIBILITY.
wenzelm@37351
  1575
wenzelm@37351
  1576
* Code generator: simple concept for abstract datatypes obeying
wenzelm@37351
  1577
invariants.
wenzelm@37351
  1578
wenzelm@36857
  1579
* Code generator: details of internal data cache have no impact on the
wenzelm@36857
  1580
user space functionality any longer.
wenzelm@36857
  1581
wenzelm@37351
  1582
* Methods "unfold_locales" and "intro_locales" ignore non-locale
wenzelm@37351
  1583
subgoals.  This is more appropriate for interpretations with 'where'.
wenzelm@36857
  1584
INCOMPATIBILITY.
haftmann@34170
  1585
wenzelm@36356
  1586
* Command 'example_proof' opens an empty proof body.  This allows to
wenzelm@36356
  1587
experiment with Isar, without producing any persistent result.
wenzelm@36356
  1588
wenzelm@35413
  1589
* Commands 'type_notation' and 'no_type_notation' declare type syntax
wenzelm@35413
  1590
within a local theory context, with explicit checking of the
wenzelm@35413
  1591
constructors involved (in contrast to the raw 'syntax' versions).
wenzelm@35413
  1592
wenzelm@36178
  1593
* Commands 'types' and 'typedecl' now work within a local theory
wenzelm@36178
  1594
context -- without introducing dependencies on parameters or
wenzelm@36178
  1595
assumptions, which is not possible in Isabelle/Pure.
wenzelm@35681
  1596
wenzelm@36857
  1597
* Command 'defaultsort' has been renamed to 'default_sort', it works
wenzelm@36857
  1598
within a local theory context.  Minor INCOMPATIBILITY.
wenzelm@36454
  1599
haftmann@34170
  1600
haftmann@33993
  1601
*** HOL ***
haftmann@33993
  1602
wenzelm@37351
  1603
* Command 'typedef' now works within a local theory context -- without
wenzelm@37351
  1604
introducing dependencies on parameters or assumptions, which is not
wenzelm@37351
  1605
possible in Isabelle/Pure/HOL.  Note that the logical environment may
wenzelm@37351
  1606
contain multiple interpretations of local typedefs (with different
wenzelm@37351
  1607
non-emptiness proofs), even in a global theory context.
wenzelm@37351
  1608
wenzelm@37351
  1609
* New package for quotient types.  Commands 'quotient_type' and
wenzelm@37351
  1610
'quotient_definition' may be used for defining types and constants by
wenzelm@37351
  1611
quotient constructions.  An example is the type of integers created by
wenzelm@37351
  1612
quotienting pairs of natural numbers:
wenzelm@37380
  1613
wenzelm@37351
  1614
  fun
wenzelm@37380
  1615
    intrel :: "(nat * nat) => (nat * nat) => bool"
wenzelm@37351
  1616
  where
wenzelm@37351
  1617
    "intrel (x, y) (u, v) = (x + v = u + y)"
wenzelm@37351
  1618
wenzelm@37380
  1619
  quotient_type int = "nat * nat" / intrel
wenzelm@37351
  1620
    by (auto simp add: equivp_def expand_fun_eq)
wenzelm@37380
  1621
wenzelm@37351
  1622
  quotient_definition
wenzelm@37351
  1623
    "0::int" is "(0::nat, 0::nat)"
wenzelm@37351
  1624
wenzelm@37351
  1625
The method "lifting" can be used to lift of theorems from the
wenzelm@37351
  1626
underlying "raw" type to the quotient type.  The example
wenzelm@37351
  1627
src/HOL/Quotient_Examples/FSet.thy includes such a quotient
wenzelm@37351
  1628
construction and provides a reasoning infrastructure for finite sets.
wenzelm@37351
  1629
wenzelm@37351
  1630
* Renamed Library/Quotient.thy to Library/Quotient_Type.thy to avoid
wenzelm@37351
  1631
clash with new theory Quotient in Main HOL.
wenzelm@37351
  1632
wenzelm@37351
  1633
* Moved the SMT binding into the main HOL session, eliminating
wenzelm@37351
  1634
separate HOL-SMT session.
wenzelm@37351
  1635
haftmann@37020
  1636
* List membership infix mem operation is only an input abbreviation.
haftmann@37020
  1637
INCOMPATIBILITY.
haftmann@37020
  1638
wenzelm@37144
  1639
* Theory Library/Word.thy has been removed.  Use library Word/Word.thy
wenzelm@37144
  1640
for future developements; former Library/Word.thy is still present in
wenzelm@37144
  1641
the AFP entry RSAPPS.
haftmann@36963
  1642
wenzelm@36857
  1643
* Theorem Int.int_induct renamed to Int.int_of_nat_induct and is no
wenzelm@36857
  1644
longer shadowed.  INCOMPATIBILITY.
haftmann@36808
  1645
huffman@36836
  1646
* Dropped theorem duplicate comp_arith; use semiring_norm instead.
huffman@36836
  1647
INCOMPATIBILITY.
huffman@36836
  1648
huffman@36836
  1649
* Dropped theorem RealPow.real_sq_order; use power2_le_imp_le instead.
huffman@36836
  1650
INCOMPATIBILITY.
haftmann@36714
  1651
wenzelm@36857
  1652
* Dropped normalizing_semiring etc; use the facts in semiring classes
wenzelm@36857
  1653
instead.  INCOMPATIBILITY.
wenzelm@36857
  1654
huffman@36979
  1655
* Dropped several real-specific versions of lemmas about floor and
wenzelm@37351
  1656
ceiling; use the generic lemmas from theory "Archimedean_Field"
wenzelm@37351
  1657
instead.  INCOMPATIBILITY.
huffman@36979
  1658
huffman@36979
  1659
  floor_number_of_eq         ~> floor_number_of
huffman@36979
  1660
  le_floor_eq_number_of      ~> number_of_le_floor
huffman@36979
  1661
  le_floor_eq_zero           ~> zero_le_floor
huffman@36979
  1662
  le_floor_eq_one            ~> one_le_floor
huffman@36979
  1663
  floor_less_eq_number_of    ~> floor_less_number_of
huffman@36979
  1664
  floor_less_eq_zero         ~> floor_less_zero
huffman@36979
  1665
  floor_less_eq_one          ~> floor_less_one
huffman@36979
  1666
  less_floor_eq_number_of    ~> number_of_less_floor
huffman@36979
  1667
  less_floor_eq_zero         ~> zero_less_floor
huffman@36979
  1668
  less_floor_eq_one          ~> one_less_floor
huffman@36979
  1669
  floor_le_eq_number_of      ~> floor_le_number_of
huffman@36979
  1670
  floor_le_eq_zero           ~> floor_le_zero
huffman@36979
  1671
  floor_le_eq_one            ~> floor_le_one
huffman@36979
  1672
  floor_subtract_number_of   ~> floor_diff_number_of
huffman@36979
  1673
  floor_subtract_one         ~> floor_diff_one
huffman@36979
  1674
  ceiling_number_of_eq       ~> ceiling_number_of
huffman@36979
  1675
  ceiling_le_eq_number_of    ~> ceiling_le_number_of
huffman@36979
  1676
  ceiling_le_zero_eq         ~> ceiling_le_zero
huffman@36979
  1677
  ceiling_le_eq_one          ~> ceiling_le_one
huffman@36979
  1678
  less_ceiling_eq_number_of  ~> number_of_less_ceiling
huffman@36979
  1679
  less_ceiling_eq_zero       ~> zero_less_ceiling
huffman@36979
  1680
  less_ceiling_eq_one        ~> one_less_ceiling
huffman@36979
  1681
  ceiling_less_eq_number_of  ~> ceiling_less_number_of
huffman@36979
  1682
  ceiling_less_eq_zero       ~> ceiling_less_zero
huffman@36979
  1683
  ceiling_less_eq_one        ~> ceiling_less_one
huffman@36979
  1684
  le_ceiling_eq_number_of    ~> number_of_le_ceiling
huffman@36979
  1685
  le_ceiling_eq_zero         ~> zero_le_ceiling
huffman@36979
  1686
  le_ceiling_eq_one          ~> one_le_ceiling
huffman@36979
  1687
  ceiling_subtract_number_of ~> ceiling_diff_number_of
huffman@36979
  1688
  ceiling_subtract_one       ~> ceiling_diff_one
huffman@36979
  1689
wenzelm@37144
  1690
* Theory "Finite_Set": various folding_XXX locales facilitate the
wenzelm@36857
  1691
application of the various fold combinators on finite sets.
wenzelm@36857
  1692
wenzelm@36857
  1693
* Library theory "RBT" renamed to "RBT_Impl"; new library theory "RBT"
wenzelm@36857
  1694
provides abstract red-black tree type which is backed by "RBT_Impl" as
wenzelm@36857
  1695
implementation.  INCOMPATIBILTY.
haftmann@36147
  1696
huffman@36830
  1697
* Theory Library/Coinductive_List has been removed -- superseded by
wenzelm@35763
  1698
AFP/thys/Coinductive.
wenzelm@35763
  1699
huffman@36829
  1700
* Theory PReal, including the type "preal" and related operations, has
huffman@36829
  1701
been removed.  INCOMPATIBILITY.
huffman@36829
  1702
wenzelm@37380
  1703
* Real: new development using Cauchy Sequences.
wenzelm@37380
  1704
wenzelm@37351
  1705
* Split off theory "Big_Operators" containing setsum, setprod,
wenzelm@37351
  1706
Inf_fin, Sup_fin, Min, Max from theory Finite_Set.  INCOMPATIBILITY.
wenzelm@36857
  1707
wenzelm@36857
  1708
* Theory "Rational" renamed to "Rat", for consistency with "Nat",
wenzelm@36857
  1709
"Int" etc.  INCOMPATIBILITY.
wenzelm@36857
  1710
wenzelm@37351
  1711
* Constant Rat.normalize needs to be qualified.  INCOMPATIBILITY.
wenzelm@37143
  1712
wenzelm@36857
  1713
* New set of rules "ac_simps" provides combined assoc / commute
wenzelm@36857
  1714
rewrites for all interpretations of the appropriate generic locales.
wenzelm@36857
  1715
wenzelm@36857
  1716
* Renamed theory "OrderedGroup" to "Groups" and split theory
wenzelm@36857
  1717
"Ring_and_Field" into theories "Rings" and "Fields"; for more
wenzelm@36857
  1718
appropriate and more consistent names suitable for name prefixes
wenzelm@36857
  1719
within the HOL theories.  INCOMPATIBILITY.
haftmann@35050
  1720
haftmann@35084
  1721
* Some generic constants have been put to appropriate theories:
wenzelm@36857
  1722
  - less_eq, less: Orderings
wenzelm@36857
  1723
  - zero, one, plus, minus, uminus, times, abs, sgn: Groups
wenzelm@36857
  1724
  - inverse, divide: Rings
haftmann@35084
  1725
INCOMPATIBILITY.
haftmann@35084
  1726
wenzelm@36857
  1727
* More consistent naming of type classes involving orderings (and
wenzelm@36857
  1728
lattices):
haftmann@35027
  1729
haftmann@35027
  1730
    lower_semilattice                   ~> semilattice_inf
haftmann@35027
  1731
    upper_semilattice                   ~> semilattice_sup
haftmann@35027
  1732
haftmann@35027
  1733
    dense_linear_order                  ~> dense_linorder
haftmann@35027
  1734
haftmann@35027
  1735
    pordered_ab_group_add               ~> ordered_ab_group_add
haftmann@35027
  1736
    pordered_ab_group_add_abs           ~> ordered_ab_group_add_abs
haftmann@35027
  1737
    pordered_ab_semigroup_add           ~> ordered_ab_semigroup_add
haftmann@35027
  1738
    pordered_ab_semigroup_add_imp_le    ~> ordered_ab_semigroup_add_imp_le
haftmann@35027
  1739
    pordered_cancel_ab_semigroup_add    ~> ordered_cancel_ab_semigroup_add
haftmann@35027
  1740
    pordered_cancel_comm_semiring       ~> ordered_cancel_comm_semiring
haftmann@35027
  1741
    pordered_cancel_semiring            ~> ordered_cancel_semiring
haftmann@35027
  1742
    pordered_comm_monoid_add            ~> ordered_comm_monoid_add
haftmann@35027
  1743
    pordered_comm_ring                  ~> ordered_comm_ring
haftmann@35027
  1744
    pordered_comm_semiring              ~> ordered_comm_semiring
haftmann@35027
  1745
    pordered_ring                       ~> ordered_ring
haftmann@35027
  1746
    pordered_ring_abs                   ~> ordered_ring_abs
haftmann@35027
  1747
    pordered_semiring                   ~> ordered_semiring
haftmann@35027
  1748
haftmann@35027
  1749
    ordered_ab_group_add                ~> linordered_ab_group_add
haftmann@35027
  1750
    ordered_ab_semigroup_add            ~> linordered_ab_semigroup_add
haftmann@35027
  1751
    ordered_cancel_ab_semigroup_add     ~> linordered_cancel_ab_semigroup_add
haftmann@35027
  1752
    ordered_comm_semiring_strict        ~> linordered_comm_semiring_strict
haftmann@35027
  1753
    ordered_field                       ~> linordered_field
haftmann@35027
  1754
    ordered_field_no_lb                 ~> linordered_field_no_lb
haftmann@35027
  1755
    ordered_field_no_ub                 ~> linordered_field_no_ub
haftmann@35027
  1756
    ordered_field_dense_linear_order    ~> dense_linordered_field
haftmann@35027
  1757
    ordered_idom                        ~> linordered_idom
haftmann@35027
  1758
    ordered_ring                        ~> linordered_ring
haftmann@35027
  1759
    ordered_ring_le_cancel_factor       ~> linordered_ring_le_cancel_factor
haftmann@35027
  1760
    ordered_ring_less_cancel_factor     ~> linordered_ring_less_cancel_factor
haftmann@35027
  1761
    ordered_ring_strict                 ~> linordered_ring_strict
haftmann@35027
  1762
    ordered_semidom                     ~> linordered_semidom
haftmann@35027
  1763
    ordered_semiring                    ~> linordered_semiring
haftmann@35027
  1764
    ordered_semiring_1                  ~> linordered_semiring_1
haftmann@35027
  1765
    ordered_semiring_1_strict           ~> linordered_semiring_1_strict
haftmann@35027
  1766
    ordered_semiring_strict             ~> linordered_semiring_strict
haftmann@35027
  1767
wenzelm@36857
  1768
  The following slightly odd type classes have been moved to a
wenzelm@37351
  1769
  separate theory Library/Lattice_Algebras:
haftmann@35032
  1770
haftmann@35032
  1771
    lordered_ab_group_add               ~> lattice_ab_group_add
haftmann@35032
  1772
    lordered_ab_group_add_abs           ~> lattice_ab_group_add_abs
haftmann@35032
  1773
    lordered_ab_group_add_meet          ~> semilattice_inf_ab_group_add
haftmann@35032
  1774
    lordered_ab_group_add_join          ~> semilattice_sup_ab_group_add
haftmann@35032
  1775
    lordered_ring                       ~> lattice_ring
haftmann@35032
  1776
haftmann@35027
  1777
INCOMPATIBILITY.
haftmann@35027
  1778
haftmann@36416
  1779
* Refined field classes:
wenzelm@36857
  1780
  - classes division_ring_inverse_zero, field_inverse_zero,
wenzelm@36857
  1781
    linordered_field_inverse_zero include rule inverse 0 = 0 --
wenzelm@36857
  1782
    subsumes former division_by_zero class;
wenzelm@36857
  1783
  - numerous lemmas have been ported from field to division_ring.
wenzelm@36857
  1784
INCOMPATIBILITY.
haftmann@36416
  1785
haftmann@36416
  1786
* Refined algebra theorem collections:
wenzelm@36857
  1787
  - dropped theorem group group_simps, use algebra_simps instead;
wenzelm@36857
  1788
  - dropped theorem group ring_simps, use field_simps instead;
wenzelm@36857
  1789
  - proper theorem collection field_simps subsumes former theorem
wenzelm@36857
  1790
    groups field_eq_simps and field_simps;
wenzelm@36857
  1791
  - dropped lemma eq_minus_self_iff which is a duplicate for
wenzelm@36857
  1792
    equal_neg_zero.
wenzelm@36857
  1793
INCOMPATIBILITY.
wenzelm@35009
  1794
wenzelm@35009
  1795
* Theory Finite_Set and List: some lemmas have been generalized from
wenzelm@34076
  1796
sets to lattices:
wenzelm@34076
  1797
haftmann@34007
  1798
  fun_left_comm_idem_inter      ~> fun_left_comm_idem_inf
haftmann@34007
  1799
  fun_left_comm_idem_union      ~> fun_left_comm_idem_sup
haftmann@34007
  1800
  inter_Inter_fold_inter        ~> inf_Inf_fold_inf
haftmann@34007
  1801
  union_Union_fold_union        ~> sup_Sup_fold_sup
haftmann@34007
  1802
  Inter_fold_inter              ~> Inf_fold_inf
haftmann@34007
  1803
  Union_fold_union              ~> Sup_fold_sup
haftmann@34007
  1804
  inter_INTER_fold_inter        ~> inf_INFI_fold_inf
haftmann@34007
  1805
  union_UNION_fold_union        ~> sup_SUPR_fold_sup
haftmann@34007
  1806
  INTER_fold_inter              ~> INFI_fold_inf
haftmann@34007
  1807
  UNION_fold_union              ~> SUPR_fold_sup
haftmann@34007
  1808
wenzelm@44973
  1809
* Theory "Complete_Lattice": lemmas top_def and bot_def have been
wenzelm@44973
  1810
replaced by the more convenient lemmas Inf_empty and Sup_empty.
wenzelm@44973
  1811
Dropped lemmas Inf_insert_simp and Sup_insert_simp, which are subsumed
wenzelm@44973
  1812
by Inf_insert and Sup_insert.  Lemmas Inf_UNIV and Sup_UNIV replace
wenzelm@44973
  1813
former Inf_Univ and Sup_Univ.  Lemmas inf_top_right and sup_bot_right
wenzelm@44973
  1814
subsume inf_top and sup_bot respectively.  INCOMPATIBILITY.
haftmann@36416
  1815
wenzelm@36857
  1816
* Reorganized theory Multiset: swapped notation of pointwise and
wenzelm@36857
  1817
multiset order:
wenzelm@37351
  1818
wenzelm@36857
  1819
  - pointwise ordering is instance of class order with standard syntax
wenzelm@36857
  1820
    <= and <;
wenzelm@36857
  1821
  - multiset ordering has syntax <=# and <#; partial order properties
wenzelm@36857
  1822
    are provided by means of interpretation with prefix
wenzelm@36857
  1823
    multiset_order;
wenzelm@36857
  1824
  - less duplication, less historical organization of sections,
wenzelm@36857
  1825
    conversion from associations lists to multisets, rudimentary code
wenzelm@36857
  1826
    generation;
wenzelm@36857
  1827
  - use insert_DiffM2 [symmetric] instead of elem_imp_eq_diff_union,
wenzelm@36857
  1828
    if needed.
wenzelm@37351
  1829
nipkow@36903
  1830
Renamed:
wenzelm@37351
  1831
wenzelm@37351
  1832
  multiset_eq_conv_count_eq  ~>  multiset_ext_iff
wenzelm@37351
  1833
  multi_count_ext  ~>  multiset_ext
wenzelm@37351
  1834
  diff_union_inverse2  ~>  diff_union_cancelR
wenzelm@37351
  1835
wenzelm@36857
  1836
INCOMPATIBILITY.
haftmann@36416
  1837
nipkow@36903
  1838
* Theory Permutation: replaced local "remove" by List.remove1.
nipkow@36903
  1839
haftmann@36416
  1840
* Code generation: ML and OCaml code is decorated with signatures.
haftmann@36416
  1841
wenzelm@35009
  1842
* Theory List: added transpose.
wenzelm@35009
  1843
huffman@35810
  1844
* Library/Nat_Bijection.thy is a collection of bijective functions
huffman@35810
  1845
between nat and other types, which supersedes the older libraries
huffman@35810
  1846
Library/Nat_Int_Bij.thy and HOLCF/NatIso.thy.  INCOMPATIBILITY.
huffman@35810
  1847
huffman@35810
  1848
  Constants:
huffman@35810
  1849
  Nat_Int_Bij.nat2_to_nat         ~> prod_encode
huffman@35810
  1850
  Nat_Int_Bij.nat_to_nat2         ~> prod_decode
huffman@35810
  1851
  Nat_Int_Bij.int_to_nat_bij      ~> int_encode
huffman@35810
  1852
  Nat_Int_Bij.nat_to_int_bij      ~> int_decode
huffman@35810
  1853
  Countable.pair_encode           ~> prod_encode
huffman@35810
  1854
  NatIso.prod2nat                 ~> prod_encode
huffman@35810
  1855
  NatIso.nat2prod                 ~> prod_decode
huffman@35810
  1856
  NatIso.sum2nat                  ~> sum_encode
huffman@35810
  1857
  NatIso.nat2sum                  ~> sum_decode
huffman@35810
  1858
  NatIso.list2nat                 ~> list_encode
huffman@35810
  1859
  NatIso.nat2list                 ~> list_decode
huffman@35810
  1860
  NatIso.set2nat                  ~> set_encode
huffman@35810
  1861
  NatIso.nat2set                  ~> set_decode
huffman@35810
  1862
huffman@35810
  1863
  Lemmas:
huffman@35810
  1864
  Nat_Int_Bij.bij_nat_to_int_bij  ~> bij_int_decode
huffman@35810
  1865
  Nat_Int_Bij.nat2_to_nat_inj     ~> inj_prod_encode
huffman@35810
  1866
  Nat_Int_Bij.nat2_to_nat_surj    ~> surj_prod_encode
huffman@35810
  1867
  Nat_Int_Bij.nat_to_nat2_inj     ~> inj_prod_decode
huffman@35810
  1868
  Nat_Int_Bij.nat_to_nat2_surj    ~> surj_prod_decode
huffman@35810
  1869
  Nat_Int_Bij.i2n_n2i_id          ~> int_encode_inverse
huffman@35810
  1870
  Nat_Int_Bij.n2i_i2n_id          ~> int_decode_inverse
huffman@35810
  1871
  Nat_Int_Bij.surj_nat_to_int_bij ~> surj_int_encode
huffman@35810
  1872
  Nat_Int_Bij.surj_int_to_nat_bij ~> surj_int_decode
huffman@35810
  1873
  Nat_Int_Bij.inj_nat_to_int_bij  ~> inj_int_encode
huffman@35810
  1874
  Nat_Int_Bij.inj_int_to_nat_bij  ~> inj_int_decode
huffman@35810
  1875
  Nat_Int_Bij.bij_nat_to_int_bij  ~> bij_int_encode
huffman@35810
  1876
  Nat_Int_Bij.bij_int_to_nat_bij  ~> bij_int_decode
huffman@35810
  1877
blanchet@36929
  1878
* Sledgehammer:
blanchet@36929
  1879
  - Renamed ATP commands:
blanchet@36929
  1880
    atp_info     ~> sledgehammer running_atps
blanchet@36929
  1881
    atp_kill     ~> sledgehammer kill_atps
blanchet@36929
  1882
    atp_messages ~> sledgehammer messages
blanchet@36929
  1883
    atp_minimize ~> sledgehammer minimize
blanchet@36929
  1884
    print_atps   ~> sledgehammer available_atps
blanchet@36929
  1885
    INCOMPATIBILITY.
blanchet@36929
  1886
  - Added user's manual ("isabelle doc sledgehammer").
blanchet@36929
  1887
  - Added option syntax and "sledgehammer_params" to customize
blanchet@36929
  1888
    Sledgehammer's behavior.  See the manual for details.
blanchet@36929
  1889
  - Modified the Isar proof reconstruction code so that it produces
blanchet@36929
  1890
    direct proofs rather than proofs by contradiction.  (This feature
blanchet@36929
  1891
    is still experimental.)
blanchet@36929
  1892
  - Made Isar proof reconstruction work for SPASS, remote ATPs, and in
blanchet@36929
  1893
    full-typed mode.
blanchet@36929
  1894
  - Added support for TPTP syntax for SPASS via the "spass_tptp" ATP.
blanchet@36929
  1895
blanchet@36928
  1896
* Nitpick:
blanchet@36928
  1897
  - Added and implemented "binary_ints" and "bits" options.
blanchet@36928
  1898
  - Added "std" option and implemented support for nonstandard models.
blanchet@36928
  1899
  - Added and implemented "finitize" option to improve the precision
blanchet@36928
  1900
    of infinite datatypes based on a monotonicity analysis.
blanchet@36928
  1901
  - Added support for quotient types.
blanchet@36928
  1902
  - Added support for "specification" and "ax_specification"
blanchet@36928
  1903
    constructs.
blanchet@36928
  1904
  - Added support for local definitions (for "function" and
blanchet@36928
  1905
    "termination" proofs).
blanchet@36928
  1906
  - Added support for term postprocessors.
blanchet@36928
  1907
  - Optimized "Multiset.multiset" and "FinFun.finfun".
blanchet@36928
  1908
  - Improved efficiency of "destroy_constrs" optimization.
blanchet@36928
  1909
  - Fixed soundness bugs related to "destroy_constrs" optimization and
blanchet@36928
  1910
    record getters.
blanchet@37272
  1911
  - Fixed soundness bug related to higher-order constructors.
blanchet@37272
  1912
  - Fixed soundness bug when "full_descrs" is enabled.
blanchet@36928
  1913
  - Improved precision of set constructs.
blanchet@37260
  1914
  - Added "atoms" option.
blanchet@36928
  1915
  - Added cache to speed up repeated Kodkod invocations on the same
blanchet@36928
  1916
    problems.
blanchet@36928
  1917
  - Renamed "MiniSatJNI", "zChaffJNI", "BerkMinAlloy", and
blanchet@36928
  1918
    "SAT4JLight" to "MiniSat_JNI", "zChaff_JNI", "BerkMin_Alloy", and
blanchet@36928
  1919
    "SAT4J_Light".  INCOMPATIBILITY.
blanchet@36928
  1920
  - Removed "skolemize", "uncurry", "sym_break", "flatten_prop",
blanchet@36928
  1921
    "sharing_depth", and "show_skolems" options.  INCOMPATIBILITY.
blanchet@37264
  1922
  - Removed "nitpick_intro" attribute.  INCOMPATIBILITY.
blanchet@36928
  1923
berghofe@37361
  1924
* Method "induct" now takes instantiations of the form t, where t is not
berghofe@37361
  1925
  a variable, as a shorthand for "x == t", where x is a fresh variable.
berghofe@37361
  1926
  If this is not intended, t has to be enclosed in parentheses.
berghofe@37361
  1927
  By default, the equalities generated by definitional instantiations
berghofe@37361
  1928
  are pre-simplified, which may cause parameters of inductive cases
berghofe@37361
  1929
  to disappear, or may even delete some of the inductive cases.
berghofe@37361
  1930
  Use "induct (no_simp)" instead of "induct" to restore the old
berghofe@37361
  1931
  behaviour. The (no_simp) option is also understood by the "cases"
berghofe@37361
  1932
  and "nominal_induct" methods, which now perform pre-simplification, too.
berghofe@37361
  1933
  INCOMPATIBILITY.
berghofe@37361
  1934
haftmann@33993
  1935
huffman@36828
  1936
*** HOLCF ***
huffman@36828
  1937
huffman@36828
  1938
* Variable names in lemmas generated by the domain package have
huffman@36828
  1939
changed; the naming scheme is now consistent with the HOL datatype
huffman@36828
  1940
package.  Some proof scripts may be affected, INCOMPATIBILITY.
huffman@36828
  1941
huffman@36828
  1942
* The domain package no longer defines the function "foo_copy" for
huffman@36828
  1943
recursive domain "foo".  The reach lemma is now stated directly in
huffman@36828
  1944
terms of "foo_take".  Lemmas and proofs that mention "foo_copy" must
huffman@36828
  1945
be reformulated in terms of "foo_take", INCOMPATIBILITY.
huffman@36828
  1946
huffman@36828
  1947
* Most definedness lemmas generated by the domain package (previously
huffman@36828
  1948
of the form "x ~= UU ==> foo$x ~= UU") now have an if-and-only-if form
huffman@36828
  1949
like "foo$x = UU <-> x = UU", which works better as a simp rule.
wenzelm@37351
  1950
Proofs that used definedness lemmas as intro rules may break,
huffman@36828
  1951
potential INCOMPATIBILITY.
huffman@36828
  1952
huffman@36828
  1953
* Induction and casedist rules generated by the domain package now
huffman@36828
  1954
declare proper case_names (one called "bottom", and one named for each
huffman@36828
  1955
constructor).  INCOMPATIBILITY.
huffman@36828
  1956
huffman@36828
  1957
* For mutually-recursive domains, separate "reach" and "take_lemma"
huffman@36828
  1958
rules are generated for each domain, INCOMPATIBILITY.
huffman@36828
  1959
huffman@36828
  1960
  foo_bar.reach       ~> foo.reach  bar.reach
huffman@36828
  1961
  foo_bar.take_lemmas ~> foo.take_lemma  bar.take_lemma
huffman@36828
  1962
huffman@36828
  1963
* Some lemmas generated by the domain package have been renamed for
huffman@36828
  1964
consistency with the datatype package, INCOMPATIBILITY.
huffman@36828
  1965
huffman@36828
  1966
  foo.ind        ~> foo.induct
huffman@36828
  1967
  foo.finite_ind ~> foo.finite_induct
huffman@36828
  1968
  foo.coind      ~> foo.coinduct
huffman@36828
  1969
  foo.casedist   ~> foo.exhaust
huffman@36828
  1970
  foo.exhaust    ~> foo.nchotomy
huffman@36828
  1971
huffman@36828
  1972
* For consistency with other definition packages, the fixrec package
huffman@36828
  1973
now generates qualified theorem names, INCOMPATIBILITY.
huffman@36828
  1974
huffman@36828
  1975
  foo_simps  ~> foo.simps
huffman@36828
  1976
  foo_unfold ~> foo.unfold
huffman@36828
  1977
  foo_induct ~> foo.induct
huffman@36828
  1978
huffman@37087
  1979
* The "fixrec_simp" attribute has been removed.  The "fixrec_simp"
huffman@37087
  1980
method and internal fixrec proofs now use the default simpset instead.
huffman@37087
  1981
INCOMPATIBILITY.
huffman@37087
  1982
huffman@36828
  1983
* The "contlub" predicate has been removed.  Proof scripts should use
huffman@36828
  1984
lemma contI2 in place of monocontlub2cont, INCOMPATIBILITY.
huffman@36828
  1985
huffman@36828
  1986
* The "admw" predicate has been removed, INCOMPATIBILITY.
huffman@36828
  1987
huffman@36828
  1988
* The constants cpair, cfst, and csnd have been removed in favor of
huffman@36828
  1989
Pair, fst, and snd from Isabelle/HOL, INCOMPATIBILITY.
huffman@36828
  1990
huffman@36828
  1991
haftmann@33993
  1992
*** ML ***
haftmann@33993
  1993
wenzelm@37351
  1994
* Antiquotations for basic formal entities:
wenzelm@37351
  1995
wenzelm@37351
  1996
    @{class NAME}         -- type class
wenzelm@37351
  1997
    @{class_syntax NAME}  -- syntax representation of the above
wenzelm@37351
  1998
wenzelm@37351
  1999
    @{type_name NAME}     -- logical type
wenzelm@37351
  2000
    @{type_abbrev NAME}   -- type abbreviation
wenzelm@37351
  2001
    @{nonterminal NAME}   -- type of concrete syntactic category
wenzelm@37351
  2002
    @{type_syntax NAME}   -- syntax representation of any of the above
wenzelm@37351
  2003
wenzelm@37351
  2004
    @{const_name NAME}    -- logical constant (INCOMPATIBILITY)
wenzelm@37351
  2005
    @{const_abbrev NAME}  -- abbreviated constant
wenzelm@37351
  2006
    @{const_syntax NAME}  -- syntax representation of any of the above
wenzelm@37351
  2007
wenzelm@37351
  2008
* Antiquotation @{syntax_const NAME} ensures that NAME refers to a raw
wenzelm@37351
  2009
syntax constant (cf. 'syntax' command).
wenzelm@37351
  2010
wenzelm@37351
  2011
* Antiquotation @{make_string} inlines a function to print arbitrary
wenzelm@37351
  2012
values similar to the ML toplevel.  The result is compiler dependent
wenzelm@37351
  2013
and may fall back on "?" in certain situations.
wenzelm@37351
  2014
wenzelm@37351
  2015
* Diagnostic commands 'ML_val' and 'ML_command' may refer to
wenzelm@37351
  2016
antiquotations @{Isar.state} and @{Isar.goal}.  This replaces impure
wenzelm@37351
  2017
Isar.state() and Isar.goal(), which belong to the old TTY loop and do
wenzelm@37351
  2018
not work with the asynchronous Isar document model.
wenzelm@37351
  2019
wenzelm@37351
  2020
* Configuration options now admit dynamic default values, depending on
wenzelm@37351
  2021
the context or even global references.
wenzelm@37351
  2022
wenzelm@37351
  2023
* SHA1.digest digests strings according to SHA-1 (see RFC 3174).  It
wenzelm@37351
  2024
uses an efficient external library if available (for Poly/ML).
wenzelm@37351
  2025
wenzelm@37144
  2026
* Renamed some important ML structures, while keeping the old names
wenzelm@37144
  2027
for some time as aliases within the structure Legacy:
wenzelm@37144
  2028
wenzelm@37144
  2029
  OuterKeyword  ~>  Keyword
wenzelm@37144
  2030
  OuterLex      ~>  Token
wenzelm@37144
  2031
  OuterParse    ~>  Parse
wenzelm@37144
  2032
  OuterSyntax   ~>  Outer_Syntax
wenzelm@37216
  2033
  PrintMode     ~>  Print_Mode
wenzelm@37144
  2034
  SpecParse     ~>  Parse_Spec
wenzelm@37216
  2035
  ThyInfo       ~>  Thy_Info
wenzelm@37216
  2036
  ThyLoad       ~>  Thy_Load
wenzelm@37216
  2037
  ThyOutput     ~>  Thy_Output
wenzelm@37145
  2038
  TypeInfer     ~>  Type_Infer
wenzelm@37144
  2039
wenzelm@37144
  2040
Note that "open Legacy" simplifies porting of sources, but forgetting
wenzelm@37144
  2041
to remove it again will complicate porting again in the future.
wenzelm@37144
  2042
wenzelm@37144
  2043
* Most operations that refer to a global context are named
wenzelm@37144
  2044
accordingly, e.g. Simplifier.global_context or
wenzelm@37144
  2045
ProofContext.init_global.  There are some situations where a global
wenzelm@37144
  2046
context actually works, but under normal circumstances one needs to
wenzelm@37144
  2047
pass the proper local context through the code!
wenzelm@37144
  2048
wenzelm@37144
  2049
* Discontinued old TheoryDataFun with its copy/init operation -- data
wenzelm@37144
  2050
needs to be pure.  Functor Theory_Data_PP retains the traditional
wenzelm@37144
  2051
Pretty.pp argument to merge, which is absent in the standard
wenzelm@37144
  2052
Theory_Data version.
wenzelm@36429
  2053
wenzelm@37144
  2054
* Sorts.certify_sort and derived "cert" operations for types and terms
wenzelm@37144
  2055
no longer minimize sorts.  Thus certification at the boundary of the
wenzelm@37144
  2056
inference kernel becomes invariant under addition of class relations,
wenzelm@37144
  2057
which is an important monotonicity principle.  Sorts are now minimized
wenzelm@37144
  2058
in the syntax layer only, at the boundary between the end-user and the
wenzelm@37144
  2059
system.  Subtle INCOMPATIBILITY, may have to use Sign.minimize_sort
wenzelm@37144
  2060
explicitly in rare situations.
wenzelm@37144
  2061
wenzelm@35021
  2062
* Renamed old-style Drule.standard to Drule.export_without_context, to
wenzelm@35021
  2063
emphasize that this is in no way a standard operation.
wenzelm@35021
  2064
INCOMPATIBILITY.
wenzelm@35021
  2065
wenzelm@34076
  2066
* Subgoal.FOCUS (and variants): resulting goal state is normalized as
wenzelm@34076
  2067
usual for resolution.  Rare INCOMPATIBILITY.
wenzelm@34076
  2068
wenzelm@35845
  2069
* Renamed varify/unvarify operations to varify_global/unvarify_global
wenzelm@35845
  2070
to emphasize that these only work in a global situation (which is
wenzelm@35845
  2071
quite rare).
wenzelm@35845
  2072
wenzelm@37144
  2073
* Curried take and drop in library.ML; negative length is interpreted
wenzelm@37144
  2074
as infinity (as in chop).  Subtle INCOMPATIBILITY.
wenzelm@36961
  2075
wenzelm@37351
  2076
* Proof terms: type substitutions on proof constants now use canonical
wenzelm@37351
  2077
order of type variables.  INCOMPATIBILITY for tools working with proof
wenzelm@37351
  2078
terms.
wenzelm@37351
  2079
wenzelm@37351
  2080
* Raw axioms/defs may no longer carry sort constraints, and raw defs
wenzelm@37351
  2081
may no longer carry premises.  User-level specifications are
wenzelm@37351
  2082
transformed accordingly by Thm.add_axiom/add_def.
wenzelm@37351
  2083
haftmann@33993
  2084
wenzelm@34238
  2085
*** System ***
wenzelm@34238
  2086
wenzelm@34238
  2087
* Discontinued special HOL_USEDIR_OPTIONS for the main HOL image;
wenzelm@34238
  2088
ISABELLE_USEDIR_OPTIONS applies uniformly to all sessions.  Note that
wenzelm@34238
  2089
proof terms are enabled unconditionally in the new HOL-Proofs image.
wenzelm@34238
  2090
wenzelm@34255
  2091
* Discontinued old ISABELLE and ISATOOL environment settings (legacy
wenzelm@34255
  2092
feature since Isabelle2009).  Use ISABELLE_PROCESS and ISABELLE_TOOL,
wenzelm@34255
  2093
respectively.
wenzelm@34255
  2094
wenzelm@36201
  2095
* Old lib/scripts/polyml-platform is superseded by the
wenzelm@36201
  2096
ISABELLE_PLATFORM setting variable, which defaults to the 32 bit
wenzelm@36201
  2097
variant, even on a 64 bit machine.  The following example setting
wenzelm@36201
  2098
prefers 64 bit if available:
wenzelm@36201
  2099
wenzelm@36201
  2100
  ML_PLATFORM="${ISABELLE_PLATFORM64:-$ISABELLE_PLATFORM}"
wenzelm@36201
  2101
wenzelm@37218
  2102
* The preliminary Isabelle/jEdit application demonstrates the emerging
wenzelm@37218
  2103
Isabelle/Scala layer for advanced prover interaction and integration.
wenzelm@37218
  2104
See src/Tools/jEdit or "isabelle jedit" provided by the properly built
wenzelm@37218
  2105
component.
wenzelm@37218
  2106
wenzelm@37375
  2107
* "IsabelleText" is a Unicode font derived from Bitstream Vera Mono
wenzelm@37375
  2108
and Bluesky TeX fonts.  It provides the usual Isabelle symbols,
wenzelm@37375
  2109
similar to the default assignment of the document preparation system
wenzelm@37375
  2110
(cf. isabellesym.sty).  The Isabelle/Scala class Isabelle_System
wenzelm@37375
  2111
provides some operations for direct access to the font without asking
wenzelm@37375
  2112
the user for manual installation.
wenzelm@37375
  2113
wenzelm@34238
  2114
haftmann@33993
  2115
wenzelm@33842
  2116
New in Isabelle2009-1 (December 2009)
wenzelm@33842
  2117
-------------------------------------
wenzelm@30904
  2118
wenzelm@31547
  2119
*** General ***
wenzelm@31547
  2120
wenzelm@31547
  2121
* Discontinued old form of "escaped symbols" such as \\<forall>.  Only
wenzelm@31547
  2122
one backslash should be used, even in ML sources.
wenzelm@31547
  2123
wenzelm@31547
  2124
haftmann@30951
  2125
*** Pure ***
haftmann@30951
  2126
ballarin@32846
  2127
* Locale interpretation propagates mixins along the locale hierarchy.
ballarin@32846
  2128
The currently only available mixins are the equations used to map
ballarin@32846
  2129
local definitions to terms of the target domain of an interpretation.
ballarin@32846
  2130
wenzelm@33842
  2131
* Reactivated diagnostic command 'print_interps'.  Use "print_interps
wenzelm@33842
  2132
loc" to print all interpretations of locale "loc" in the theory.
wenzelm@33842
  2133
Interpretations in proofs are not shown.
ballarin@32846
  2134
ballarin@32983
  2135
* Thoroughly revised locales tutorial.  New section on conditional
ballarin@32983
  2136
interpretation.
ballarin@32983
  2137
wenzelm@33843
  2138
* On instantiation of classes, remaining undefined class parameters
wenzelm@33843
  2139
are formally declared.  INCOMPATIBILITY.
wenzelm@33843
  2140
haftmann@30951
  2141
wenzelm@33842
  2142
*** Document preparation ***
wenzelm@33842
  2143
wenzelm@33842
  2144
* New generalized style concept for printing terms: @{foo (style) ...}
wenzelm@33842
  2145
instead of @{foo_style style ...}  (old form is still retained for
wenzelm@33842
  2146
backward compatibility).  Styles can be also applied for
wenzelm@33842
  2147
antiquotations prop, term_type and typeof.
haftmann@32891
  2148
haftmann@32891
  2149
haftmann@30930
  2150
*** HOL ***
haftmann@30930
  2151
wenzelm@33842
  2152
* New proof method "smt" for a combination of first-order logic with
wenzelm@33842
  2153
equality, linear and nonlinear (natural/integer/real) arithmetic, and
wenzelm@33842
  2154
fixed-size bitvectors; there is also basic support for higher-order
wenzelm@33842
  2155
features (esp. lambda abstractions).  It is an incomplete decision
wenzelm@33842
  2156
procedure based on external SMT solvers using the oracle mechanism;
wenzelm@33842
  2157
for the SMT solver Z3, this method is proof-producing.  Certificates
wenzelm@33842
  2158
are provided to avoid calling the external solvers solely for
wenzelm@33842
  2159
re-checking proofs.  Due to a remote SMT service there is no need for
wenzelm@33842
  2160
installing SMT solvers locally.  See src/HOL/SMT.
wenzelm@33842
  2161
wenzelm@33842
  2162
* New commands to load and prove verification conditions generated by
wenzelm@33842
  2163
the Boogie program verifier or derived systems (e.g. the Verifying C
wenzelm@33842
  2164
Compiler (VCC) or Spec#).  See src/HOL/Boogie.
wenzelm@33842
  2165
wenzelm@33842
  2166
* New counterexample generator tool 'nitpick' based on the Kodkod
wenzelm@33842
  2167
relational model finder.  See src/HOL/Tools/Nitpick and
wenzelm@33842
  2168
src/HOL/Nitpick_Examples.
wenzelm@33842
  2169
haftmann@33860
  2170
* New commands 'code_pred' and 'values' to invoke the predicate
haftmann@33860
  2171
compiler and to enumerate values of inductive predicates.
haftmann@33860
  2172
haftmann@33860
  2173
* A tabled implementation of the reflexive transitive closure.
haftmann@33860
  2174
haftmann@33860
  2175
* New implementation of quickcheck uses generic code generator;
haftmann@33860
  2176
default generators are provided for all suitable HOL types, records
haftmann@33860
  2177
and datatypes.  Old quickcheck can be re-activated importing theory
haftmann@33860
  2178
Library/SML_Quickcheck.
haftmann@33860
  2179
wenzelm@33843
  2180
* New testing tool Mirabelle for automated proof tools.  Applies
wenzelm@33843
  2181
several tools and tactics like sledgehammer, metis, or quickcheck, to
wenzelm@33843
  2182
every proof step in a theory.  To be used in batch mode via the
wenzelm@33843
  2183
"mirabelle" utility.
wenzelm@33843
  2184
wenzelm@33843
  2185
* New proof method "sos" (sum of squares) for nonlinear real
wenzelm@33843
  2186
arithmetic (originally due to John Harison). It requires theory
wenzelm@33843
  2187
Library/Sum_Of_Squares.  It is not a complete decision procedure but
wenzelm@33843
  2188
works well in practice on quantifier-free real arithmetic with +, -,
wenzelm@33843
  2189
*, ^, =, <= and <, i.e. boolean combinations of equalities and
wenzelm@33843
  2190
inequalities between polynomials.  It makes use of external
wenzelm@33843
  2191
semidefinite programming solvers.  Method "sos" generates a
wenzelm@33843
  2192
certificate that can be pasted into the proof thus avoiding the need
wenzelm@33843
  2193
to call an external tool every time the proof is checked.  See
wenzelm@33843
  2194
src/HOL/Library/Sum_Of_Squares.
wenzelm@33843
  2195
wenzelm@33843
  2196
* New method "linarith" invokes existing linear arithmetic decision
wenzelm@33843
  2197
procedure only.
wenzelm@33843
  2198
wenzelm@33843
  2199
* New command 'atp_minimal' reduces result produced by Sledgehammer.
wenzelm@33843
  2200
wenzelm@33843
  2201
* New Sledgehammer option "Full Types" in Proof General settings menu.
wenzelm@33843
  2202
Causes full type information to be output to the ATPs.  This slows
wenzelm@33843
  2203
ATPs down considerably but eliminates a source of unsound "proofs"
wenzelm@33843
  2204
that fail later.
wenzelm@33843
  2205
wenzelm@33843
  2206
* New method "metisFT": A version of metis that uses full type
wenzelm@33843
  2207
information in order to avoid failures of proof reconstruction.
wenzelm@33843
  2208
wenzelm@33843
  2209
* New evaluator "approximate" approximates an real valued term using
wenzelm@33843
  2210
the same method as the approximation method.
wenzelm@33843
  2211
wenzelm@33843
  2212
* Method "approximate" now supports arithmetic expressions as
wenzelm@33843
  2213
boundaries of intervals and implements interval splitting and Taylor
wenzelm@33843
  2214
series expansion.
wenzelm@33843
  2215
wenzelm@33843
  2216
* ML antiquotation @{code_datatype} inserts definition of a datatype
wenzelm@33843
  2217
generated by the code generator; e.g. see src/HOL/Predicate.thy.
wenzelm@33843
  2218
haftmann@33860
  2219
* New theory SupInf of the supremum and infimum operators for sets of
haftmann@33860
  2220
reals.
haftmann@33860
  2221
haftmann@33860
  2222
* New theory Probability, which contains a development of measure
haftmann@33860
  2223
theory, eventually leading to Lebesgue integration and probability.
haftmann@33860
  2224
haftmann@33860
  2225
* Extended Multivariate Analysis to include derivation and Brouwer's
haftmann@33860
  2226
fixpoint theorem.
wenzelm@33843
  2227
wenzelm@33842
  2228
* Reorganization of number theory, INCOMPATIBILITY:
wenzelm@33873
  2229
  - new number theory development for nat and int, in theories Divides
wenzelm@33873
  2230
    and GCD as well as in new session Number_Theory
wenzelm@33873
  2231
  - some constants and facts now suffixed with _nat and _int
wenzelm@33873
  2232
    accordingly
wenzelm@33873
  2233
  - former session NumberTheory now named Old_Number_Theory, including
wenzelm@33873
  2234
    theories Legacy_GCD and Primes (prefer Number_Theory if possible)
wenzelm@33842
  2235
  - moved theory Pocklington from src/HOL/Library to
wenzelm@33842
  2236
    src/HOL/Old_Number_Theory
haftmann@32479
  2237
wenzelm@33873
  2238
* Theory GCD includes functions Gcd/GCD and Lcm/LCM for the gcd and
wenzelm@33873
  2239
lcm of finite and infinite sets. It is shown that they form a complete
haftmann@32600
  2240
lattice.
haftmann@32600
  2241
haftmann@32600
  2242
* Class semiring_div requires superclass no_zero_divisors and proof of
haftmann@32600
  2243
div_mult_mult1; theorems div_mult_mult1, div_mult_mult2,
haftmann@32600
  2244
div_mult_mult1_if, div_mult_mult1 and div_mult_mult2 have been
haftmann@32600
  2245
generalized to class semiring_div, subsuming former theorems
haftmann@32600
  2246
zdiv_zmult_zmult1, zdiv_zmult_zmult1_if, zdiv_zmult_zmult1 and
haftmann@32600
  2247
zdiv_zmult_zmult2.  div_mult_mult1 is now [simp] by default.
haftmann@32600
  2248
INCOMPATIBILITY.
haftmann@32600
  2249
haftmann@32588
  2250
* Refinements to lattice classes and sets:
haftmann@32064
  2251
  - less default intro/elim rules in locale variant, more default
haftmann@32064
  2252
    intro/elim rules in class variant: more uniformity
wenzelm@33842
  2253
  - lemma ge_sup_conv renamed to le_sup_iff, in accordance with
wenzelm@33842
  2254
    le_inf_iff
wenzelm@33842
  2255
  - dropped lemma alias inf_ACI for inf_aci (same for sup_ACI and
wenzelm@33842
  2256
    sup_aci)
haftmann@32064
  2257
  - renamed ACI to inf_sup_aci
haftmann@32600
  2258
  - new class "boolean_algebra"
wenzelm@33842
  2259
  - class "complete_lattice" moved to separate theory
haftmann@33860
  2260
    "Complete_Lattice"; corresponding constants (and abbreviations)
wenzelm@33842
  2261
    renamed and with authentic syntax:
haftmann@33860
  2262
    Set.Inf ~>    Complete_Lattice.Inf
haftmann@33860
  2263
    Set.Sup ~>    Complete_Lattice.Sup
haftmann@33860
  2264
    Set.INFI ~>   Complete_Lattice.INFI
haftmann@33860
  2265
    Set.SUPR ~>   Complete_Lattice.SUPR
haftmann@33860
  2266
    Set.Inter ~>  Complete_Lattice.Inter
haftmann@33860
  2267
    Set.Union ~>  Complete_Lattice.Union
haftmann@33860
  2268
    Set.INTER ~>  Complete_Lattice.INTER
haftmann@33860
  2269
    Set.UNION ~>  Complete_Lattice.UNION
haftmann@32600
  2270
  - authentic syntax for
haftmann@32600
  2271
    Set.Pow
haftmann@32600
  2272
    Set.image
haftmann@32588
  2273
  - mere abbreviations:
haftmann@32588
  2274
    Set.empty               (for bot)
haftmann@32588
  2275
    Set.UNIV                (for top)
haftmann@33860
  2276
    Set.inter               (for inf, formerly Set.Int)
haftmann@33860
  2277
    Set.union               (for sup, formerly Set.Un)
haftmann@32588
  2278
    Complete_Lattice.Inter  (for Inf)
haftmann@32588
  2279
    Complete_Lattice.Union  (for Sup)
haftmann@32606
  2280
    Complete_Lattice.INTER  (for INFI)
haftmann@32606
  2281
    Complete_Lattice.UNION  (for SUPR)
haftmann@32600
  2282
  - object-logic definitions as far as appropriate
haftmann@32217
  2283
haftmann@32691
  2284
INCOMPATIBILITY.  Care is required when theorems Int_subset_iff or
wenzelm@33842
  2285
Un_subset_iff are explicitly deleted as default simp rules; then also
wenzelm@33842
  2286
their lattice counterparts le_inf_iff and le_sup_iff have to be
haftmann@32691
  2287
deleted to achieve the desired effect.
haftmann@32064
  2288
wenzelm@33842
  2289
* Rules inf_absorb1, inf_absorb2, sup_absorb1, sup_absorb2 are no simp
wenzelm@33842
  2290
rules by default any longer; the same applies to min_max.inf_absorb1
wenzelm@33842
  2291
etc.  INCOMPATIBILITY.
wenzelm@33842
  2292
wenzelm@33842
  2293
* Rules sup_Int_eq and sup_Un_eq are no longer declared as
wenzelm@33842
  2294
pred_set_conv by default.  INCOMPATIBILITY.
wenzelm@33842
  2295
wenzelm@33842
  2296
* Power operations on relations and functions are now one dedicated
haftmann@32706
  2297
constant "compow" with infix syntax "^^".  Power operation on
wenzelm@31547
  2298
multiplicative monoids retains syntax "^" and is now defined generic
wenzelm@31547
  2299
in class power.  INCOMPATIBILITY.
wenzelm@31547
  2300
wenzelm@33842
  2301
* Relation composition "R O S" now has a more standard argument order:
wenzelm@33842
  2302
"R O S = {(x, z). EX y. (x, y) : R & (y, z) : S}".  INCOMPATIBILITY,
wenzelm@33842
  2303
rewrite propositions with "S O R" --> "R O S". Proofs may occasionally
wenzelm@33842
  2304
break, since the O_assoc rule was not rewritten like this.  Fix using
wenzelm@33842
  2305
O_assoc[symmetric].  The same applies to the curried version "R OO S".
wenzelm@32427
  2306
nipkow@33057
  2307
* Function "Inv" is renamed to "inv_into" and function "inv" is now an
wenzelm@33842
  2308
abbreviation for "inv_into UNIV".  Lemmas are renamed accordingly.
nipkow@32988
  2309
INCOMPATIBILITY.
nipkow@32988
  2310
haftmann@33860
  2311
* Most rules produced by inductive and datatype package have mandatory
haftmann@33860
  2312
prefixes.  INCOMPATIBILITY.
nipkow@31790
  2313
wenzelm@33842
  2314
* Changed "DERIV_intros" to a dynamic fact, which can be augmented by
wenzelm@33842
  2315
the attribute of the same name.  Each of the theorems in the list
wenzelm@33842
  2316
DERIV_intros assumes composition with an additional function and
wenzelm@33842
  2317
matches a variable to the derivative, which has to be solved by the
wenzelm@33842
  2318
Simplifier.  Hence (auto intro!: DERIV_intros) computes the derivative
wenzelm@33873
  2319
of most elementary terms.  Former Maclauren.DERIV_tac and
wenzelm@33873
  2320
Maclauren.deriv_tac should be replaced by (auto intro!: DERIV_intros).
wenzelm@33873
  2321
INCOMPATIBILITY.
haftmann@33860
  2322
haftmann@33860
  2323
* Code generator attributes follow the usual underscore convention:
haftmann@33860
  2324
    code_unfold     replaces    code unfold
haftmann@33860
  2325
    code_post       replaces    code post
haftmann@33860
  2326
    etc.
haftmann@33860
  2327
  INCOMPATIBILITY.
wenzelm@31900
  2328
krauss@33471
  2329
* Renamed methods:
krauss@33471
  2330
    sizechange -> size_change
krauss@33471
  2331
    induct_scheme -> induction_schema
haftmann@33860
  2332
  INCOMPATIBILITY.
nipkow@33673
  2333
wenzelm@33843
  2334
* Discontinued abbreviation "arbitrary" of constant "undefined".
wenzelm@33843
  2335
INCOMPATIBILITY, use "undefined" directly.
wenzelm@33843
  2336
haftmann@33860
  2337
* Renamed theorems:
haftmann@33860
  2338
    Suc_eq_add_numeral_1 -> Suc_eq_plus1
haftmann@33860
  2339
    Suc_eq_add_numeral_1_left -> Suc_eq_plus1_left
haftmann@33860
  2340
    Suc_plus1 -> Suc_eq_plus1
haftmann@33860
  2341
    *anti_sym -> *antisym*
haftmann@33860
  2342
    vector_less_eq_def -> vector_le_def
haftmann@33860
  2343
  INCOMPATIBILITY.
haftmann@33860
  2344
haftmann@33860
  2345
* Added theorem List.map_map as [simp].  Removed List.map_compose.
haftmann@33860
  2346
INCOMPATIBILITY.
haftmann@33860
  2347
haftmann@33860
  2348
* Removed predicate "M hassize n" (<--> card M = n & finite M).
haftmann@33860
  2349
INCOMPATIBILITY.
haftmann@33860
  2350
hoelzl@31812
  2351
huffman@33825
  2352
*** HOLCF ***
huffman@33825
  2353
wenzelm@33842
  2354
* Theory Representable defines a class "rep" of domains that are
wenzelm@33842
  2355
representable (via an ep-pair) in the universal domain type "udom".
huffman@33825
  2356
Instances are provided for all type constructors defined in HOLCF.
huffman@33825
  2357
huffman@33825
  2358
* The 'new_domain' command is a purely definitional version of the
huffman@33825
  2359
domain package, for representable domains.  Syntax is identical to the
huffman@33825
  2360
old domain package.  The 'new_domain' package also supports indirect
huffman@33825
  2361
recursion using previously-defined type constructors.  See
wenzelm@33842
  2362
src/HOLCF/ex/New_Domain.thy for examples.
wenzelm@33842
  2363
wenzelm@33842
  2364
* Method "fixrec_simp" unfolds one step of a fixrec-defined constant
huffman@33825
  2365
on the left-hand side of an equation, and then performs
huffman@33825
  2366
simplification.  Rewriting is done using rules declared with the
wenzelm@33842
  2367
"fixrec_simp" attribute.  The "fixrec_simp" method is intended as a
wenzelm@33842
  2368
replacement for "fixpat"; see src/HOLCF/ex/Fixrec_ex.thy for examples.
huffman@33825
  2369
huffman@33825
  2370
* The pattern-match compiler in 'fixrec' can now handle constructors
huffman@33825
  2371
with HOL function types.  Pattern-match combinators for the Pair
huffman@33825
  2372
constructor are pre-configured.
huffman@33825
  2373
huffman@33825
  2374
* The 'fixrec' package now produces better fixed-point induction rules
huffman@33825
  2375
for mutually-recursive definitions:  Induction rules have conclusions
huffman@33825
  2376
of the form "P foo bar" instead of "P <foo, bar>".
huffman@33825
  2377
huffman@33825
  2378
* The constant "sq_le" (with infix syntax "<<" or "\<sqsubseteq>") has
huffman@33825
  2379
been renamed to "below".  The name "below" now replaces "less" in many
wenzelm@33842
  2380
theorem names.  (Legacy theorem names using "less" are still supported
wenzelm@33842
  2381
as well.)
huffman@33825
  2382
huffman@33825
  2383
* The 'fixrec' package now supports "bottom patterns".  Bottom
huffman@33825
  2384
patterns can be used to generate strictness rules, or to make
huffman@33825
  2385
functions more strict (much like the bang-patterns supported by the
wenzelm@33873
  2386
Glasgow Haskell Compiler).  See src/HOLCF/ex/Fixrec_ex.thy for
wenzelm@33873
  2387
examples.
huffman@33825
  2388
huffman@33825
  2389
wenzelm@31304
  2390
*** ML ***
wenzelm@31304
  2391
wenzelm@33843
  2392
* Support for Poly/ML 5.3.0, with improved reporting of compiler
wenzelm@33843
  2393
errors and run-time exceptions, including detailed source positions.
wenzelm@33843
  2394
wenzelm@33843
  2395
* Structure Name_Space (formerly NameSpace) now manages uniquely
wenzelm@33843
  2396
identified entries, with some additional information such as source
wenzelm@33843
  2397
position, logical grouping etc.
wenzelm@33843
  2398
wenzelm@33524
  2399
* Theory and context data is now introduced by the simplified and
wenzelm@33524
  2400
modernized functors Theory_Data, Proof_Data, Generic_Data.  Data needs
wenzelm@33524
  2401
to be pure, but the old TheoryDataFun for mutable data (with explicit
wenzelm@33524
  2402
copy operation) is still available for some time.
wenzelm@33524
  2403
wenzelm@32742
  2404
* Structure Synchronized (cf. src/Pure/Concurrent/synchronized.ML)
wenzelm@32742
  2405
provides a high-level programming interface to synchronized state
wenzelm@32742
  2406
variables with atomic update.  This works via pure function
wenzelm@32742
  2407
application within a critical section -- its runtime should be as
wenzelm@32742
  2408
short as possible; beware of deadlocks if critical code is nested,
wenzelm@32742
  2409
either directly or indirectly via other synchronized variables!
wenzelm@32742
  2410
wenzelm@32742
  2411
* Structure Unsynchronized (cf. src/Pure/ML-Systems/unsynchronized.ML)
wenzelm@32742
  2412
wraps raw ML references, explicitly indicating their non-thread-safe
wenzelm@32742
  2413
behaviour.  The Isar toplevel keeps this structure open, to
wenzelm@32742
  2414
accommodate Proof General as well as quick and dirty interactive
wenzelm@32742
  2415
experiments with references.
wenzelm@32742
  2416
wenzelm@32365
  2417
* PARALLEL_CHOICE and PARALLEL_GOALS provide basic support for
wenzelm@32365
  2418
parallel tactical reasoning.
wenzelm@32365
  2419
wenzelm@32427
  2420
* Tacticals Subgoal.FOCUS, Subgoal.FOCUS_PREMS, Subgoal.FOCUS_PARAMS
wenzelm@32427
  2421
are similar to SUBPROOF, but are slightly more flexible: only the
wenzelm@32427
  2422
specified parts of the subgoal are imported into the context, and the
wenzelm@32427
  2423
body tactic may introduce new subgoals and schematic variables.
wenzelm@32427
  2424
wenzelm@32427
  2425
* Old tactical METAHYPS, which does not observe the proof context, has
wenzelm@32427
  2426
been renamed to Old_Goals.METAHYPS and awaits deletion.  Use SUBPROOF
wenzelm@32427
  2427
or Subgoal.FOCUS etc.
wenzelm@32216
  2428
wenzelm@31971
  2429
* Renamed functor TableFun to Table, and GraphFun to Graph.  (Since
wenzelm@31971
  2430
functors have their own ML name space there is no point to mark them
wenzelm@31971
  2431
separately.)  Minor INCOMPATIBILITY.
wenzelm@31971
  2432
wenzelm@31901
  2433
* Renamed NamedThmsFun to Named_Thms.  INCOMPATIBILITY.
wenzelm@31901
  2434
wenzelm@33842
  2435
* Renamed several structures FooBar to Foo_Bar.  Occasional,
wenzelm@33842
  2436
INCOMPATIBILITY.
wenzelm@33842
  2437
wenzelm@33843
  2438
* Operations of structure Skip_Proof no longer require quick_and_dirty
wenzelm@33843
  2439
mode, which avoids critical setmp.
wenzelm@33843
  2440
wenzelm@31306
  2441
* Eliminated old Attrib.add_attributes, Method.add_methods and related
wenzelm@33842
  2442
combinators for "args".  INCOMPATIBILITY, need to use simplified
wenzelm@31306
  2443
Attrib/Method.setup introduced in Isabelle2009.
wenzelm@31304
  2444
wenzelm@32151
  2445
* Proper context for simpset_of, claset_of, clasimpset_of.  May fall
wenzelm@32151
  2446
back on global_simpset_of, global_claset_of, global_clasimpset_of as
wenzelm@32151
  2447
last resort.  INCOMPATIBILITY.
wenzelm@32151
  2448
wenzelm@32092
  2449
* Display.pretty_thm now requires a proper context (cf. former
wenzelm@32092
  2450
ProofContext.pretty_thm).  May fall back on Display.pretty_thm_global
wenzelm@32092
  2451
or even Display.pretty_thm_without_context as last resort.
wenzelm@32092
  2452
INCOMPATIBILITY.
wenzelm@32092
  2453
wenzelm@32433
  2454
* Discontinued Display.pretty_ctyp/cterm etc.  INCOMPATIBILITY, use
wenzelm@32433
  2455
Syntax.pretty_typ/term directly, preferably with proper context
wenzelm@32433
  2456
instead of global theory.
wenzelm@32433
  2457
wenzelm@31304
  2458
wenzelm@31308
  2459
*** System ***
wenzelm@31308
  2460
wenzelm@33842
  2461
* Further fine tuning of parallel proof checking, scales up to 8 cores
wenzelm@33842
  2462
(max. speedup factor 5.0).  See also Goal.parallel_proofs in ML and
wenzelm@33842
  2463
usedir option -q.
wenzelm@33842
  2464
wenzelm@32326
  2465
* Support for additional "Isabelle components" via etc/components, see
wenzelm@32326
  2466
also the system manual.
wenzelm@32326
  2467
wenzelm@32326
  2468
* The isabelle makeall tool now operates on all components with
wenzelm@32326
  2469
IsaMakefile, not just hardwired "logics".
wenzelm@32326
  2470
wenzelm@33842
  2471
* Removed "compress" option from isabelle-process and isabelle usedir;
wenzelm@33842
  2472
this is always enabled.
kleing@33818
  2473
wenzelm@31308
  2474
* Discontinued support for Poly/ML 4.x versions.
wenzelm@31308
  2475
wenzelm@33842
  2476
* Isabelle tool "wwwfind" provides web interface for 'find_theorems'
wenzelm@33842
  2477
on a given logic image.  This requires the lighttpd webserver and is
wenzelm@33842
  2478
currently supported on Linux only.
wenzelm@32061
  2479
wenzelm@31308
  2480
wenzelm@31304
  2481
wenzelm@30845
  2482
New in Isabelle2009 (April 2009)
wenzelm@30845
  2483
--------------------------------
haftmann@27104
  2484
wenzelm@27599
  2485
*** General ***
wenzelm@27599
  2486
wenzelm@28504
  2487
* Simplified main Isabelle executables, with less surprises on
wenzelm@28504
  2488
case-insensitive file-systems (such as Mac OS).
wenzelm@28504
  2489
wenzelm@28504
  2490
  - The main Isabelle tool wrapper is now called "isabelle" instead of
wenzelm@28504
  2491
    "isatool."
wenzelm@28504
  2492
wenzelm@28504
  2493
  - The former "isabelle" alias for "isabelle-process" has been
wenzelm@28504
  2494
    removed (should rarely occur to regular users).
wenzelm@28504
  2495
wenzelm@28915
  2496
  - The former "isabelle-interface" and its alias "Isabelle" have been
wenzelm@28915
  2497
    removed (interfaces are now regular Isabelle tools).
wenzelm@28504
  2498
wenzelm@28504
  2499
Within scripts and make files, the Isabelle environment variables
wenzelm@28504
  2500
ISABELLE_TOOL and ISABELLE_PROCESS replace old ISATOOL and ISABELLE,
wenzelm@28504
  2501
respectively.  (The latter are still available as legacy feature.)
wenzelm@28504
  2502
wenzelm@28915
  2503
The old isabelle-interface wrapper could react in confusing ways if
wenzelm@28915
  2504
the interface was uninstalled or changed otherwise.  Individual
wenzelm@28915
  2505
interface tool configuration is now more explicit, see also the
wenzelm@28915
  2506
Isabelle system manual.  In particular, Proof General is now available
wenzelm@28915
  2507
via "isabelle emacs".
wenzelm@28504
  2508
wenzelm@28504
  2509
INCOMPATIBILITY, need to adapt derivative scripts.  Users may need to
wenzelm@28504
  2510
purge installed copies of Isabelle executables and re-run "isabelle
wenzelm@28504
  2511
install -p ...", or use symlinks.
wenzelm@28504
  2512
wenzelm@28914
  2513
* The default for ISABELLE_HOME_USER is now ~/.isabelle instead of the
wenzelm@30845
  2514
old ~/isabelle, which was slightly non-standard and apt to cause
wenzelm@30845
  2515
surprises on case-insensitive file-systems (such as Mac OS).
wenzelm@28914
  2516
wenzelm@28914
  2517
INCOMPATIBILITY, need to move existing ~/isabelle/etc,
wenzelm@28914
  2518
~/isabelle/heaps, ~/isabelle/browser_info to the new place.  Special
wenzelm@28914
  2519
care is required when using older releases of Isabelle.  Note that
wenzelm@28914
  2520
ISABELLE_HOME_USER can be changed in Isabelle/etc/settings of any
wenzelm@30845
  2521
Isabelle distribution, in order to use the new ~/.isabelle uniformly.
wenzelm@28914
  2522
wenzelm@29161
  2523
* Proofs of fully specified statements are run in parallel on
wenzelm@30845
  2524
multi-core systems.  A speedup factor of 2.5 to 3.2 can be expected on
wenzelm@30845
  2525
a regular 4-core machine, if the initial heap space is made reasonably
wenzelm@30845
  2526
large (cf. Poly/ML option -H).  (Requires Poly/ML 5.2.1 or later.)
wenzelm@30845
  2527
wenzelm@30845
  2528
* The main reference manuals ("isar-ref", "implementation", and
wenzelm@30845
  2529
"system") have been updated and extended.  Formally checked references
wenzelm@30845
  2530
as hyperlinks are now available uniformly.
wenzelm@30845
  2531
wenzelm@30163
  2532
wenzelm@27599
  2533
*** Pure ***
wenzelm@27599
  2534
wenzelm@30845
  2535
* Complete re-implementation of locales.  INCOMPATIBILITY in several
wenzelm@30845
  2536
respects.  The most important changes are listed below.  See the
wenzelm@30845
  2537
Tutorial on Locales ("locales" manual) for details.
ballarin@29253
  2538
ballarin@29253
  2539
- In locale expressions, instantiation replaces renaming.  Parameters
ballarin@29253
  2540
must be declared in a for clause.  To aid compatibility with previous
ballarin@29253
  2541
parameter inheritance, in locale declarations, parameters that are not
ballarin@29253
  2542
'touched' (instantiation position "_" or omitted) are implicitly added
ballarin@29253
  2543
with their syntax at the beginning of the for clause.
ballarin@29253
  2544
ballarin@29253
  2545
- Syntax from abbreviations and definitions in locales is available in
ballarin@29253
  2546
locale expressions and context elements.  The latter is particularly
ballarin@29253
  2547
useful in locale declarations.
ballarin@29253
  2548
ballarin@29253
  2549
- More flexible mechanisms to qualify names generated by locale
ballarin@29253
  2550
expressions.  Qualifiers (prefixes) may be specified in locale
wenzelm@30728
  2551
expressions, and can be marked as mandatory (syntax: "name!:") or
wenzelm@30728
  2552
optional (syntax "name?:").  The default depends for plain "name:"
wenzelm@30728
  2553
depends on the situation where a locale expression is used: in
wenzelm@30728
  2554
commands 'locale' and 'sublocale' prefixes are optional, in
wenzelm@30845
  2555
'interpretation' and 'interpret' prefixes are mandatory.  The old
wenzelm@30728
  2556
implicit qualifiers derived from the parameter names of a locale are
wenzelm@30728
  2557
no longer generated.
wenzelm@30106
  2558
wenzelm@30845
  2559
- Command "sublocale l < e" replaces "interpretation l < e".  The
wenzelm@30106
  2560
instantiation clause in "interpretation" and "interpret" (square
wenzelm@30106
  2561
brackets) is no longer available.  Use locale expressions.
ballarin@29253
  2562
wenzelm@30845
  2563
- When converting proof scripts, mandatory qualifiers in
wenzelm@30728
  2564
'interpretation' and 'interpret' should be retained by default, even
wenzelm@30845
  2565
if this is an INCOMPATIBILITY compared to former behavior.  In the
wenzelm@30845
  2566
worst case, use the "name?:" form for non-mandatory ones.  Qualifiers
wenzelm@30845
  2567
in locale expressions range over a single locale instance only.
wenzelm@30845
  2568
wenzelm@30845
  2569
- Dropped locale element "includes".  This is a major INCOMPATIBILITY.
wenzelm@30845
  2570
In existing theorem specifications replace the includes element by the
wenzelm@30845
  2571
respective context elements of the included locale, omitting those
wenzelm@30845
  2572
that are already present in the theorem specification.  Multiple
wenzelm@30845
  2573
assume elements of a locale should be replaced by a single one
wenzelm@30845
  2574
involving the locale predicate.  In the proof body, declarations (most
wenzelm@30845
  2575
notably theorems) may be regained by interpreting the respective
wenzelm@30845
  2576
locales in the proof context as required (command "interpret").
wenzelm@30845
  2577
wenzelm@30845
  2578
If using "includes" in replacement of a target solely because the
wenzelm@30845
  2579
parameter types in the theorem are not as general as in the target,
wenzelm@30845
  2580
consider declaring a new locale with additional type constraints on
wenzelm@30845
  2581
the parameters (context element "constrains").
wenzelm@30845
  2582
wenzelm@30845
  2583
- Discontinued "locale (open)".  INCOMPATIBILITY.
wenzelm@30845
  2584
wenzelm@30845
  2585
- Locale interpretation commands no longer attempt to simplify goal.
wenzelm@30845
  2586
INCOMPATIBILITY: in rare situations the generated goal differs.  Use
wenzelm@30845
  2587
methods intro_locales and unfold_locales to clarify.
wenzelm@30845
  2588
wenzelm@30845
  2589
- Locale interpretation commands no longer accept interpretation
wenzelm@30845
  2590
attributes.  INCOMPATIBILITY.
wenzelm@30845
  2591
wenzelm@30845
  2592
* Class declaration: so-called "base sort" must not be given in import
wenzelm@30845
  2593
list any longer, but is inferred from the specification.  Particularly
wenzelm@30845
  2594
in HOL, write
wenzelm@30845
  2595
wenzelm@30845
  2596
    class foo = ...
wenzelm@30845
  2597
wenzelm@30845
  2598
instead of
wenzelm@30845
  2599
wenzelm@30845
  2600
    class foo = type + ...
wenzelm@30845
  2601
wenzelm@30845
  2602
* Class target: global versions of theorems stemming do not carry a
wenzelm@30845
  2603
parameter prefix any longer.  INCOMPATIBILITY.
wenzelm@30845
  2604
wenzelm@30845
  2605
* Class 'instance' command no longer accepts attached definitions.
wenzelm@30845
  2606
INCOMPATIBILITY, use proper 'instantiation' target instead.
wenzelm@30845
  2607
wenzelm@30845
  2608
* Recovered hiding of consts, which was accidentally broken in
wenzelm@30845
  2609
Isabelle2007.  Potential INCOMPATIBILITY, ``hide const c'' really
wenzelm@30845
  2610
makes c inaccessible; consider using ``hide (open) const c'' instead.
wenzelm@30845
  2611
wenzelm@30845
  2612
* Slightly more coherent Pure syntax, with updated documentation in
wenzelm@30845
  2613
isar-ref manual.  Removed locales meta_term_syntax and
wenzelm@30845
  2614
meta_conjunction_syntax: TERM and &&& (formerly &&) are now permanent,
wenzelm@30845
  2615
INCOMPATIBILITY in rare situations.  Note that &&& should not be used
wenzelm@30845
  2616
directly in regular applications.
wenzelm@30845
  2617
wenzelm@30845
  2618
* There is a new syntactic category "float_const" for signed decimal
wenzelm@30845
  2619
fractions (e.g. 123.45 or -123.45).
wenzelm@30845
  2620
wenzelm@30845
  2621
* Removed exotic 'token_translation' command.  INCOMPATIBILITY, use ML
wenzelm@30845
  2622
interface with 'setup' command instead.
wenzelm@30845
  2623
wenzelm@30845
  2624
* Command 'local_setup' is similar to 'setup', but operates on a local
wenzelm@30845
  2625
theory context.
haftmann@27104
  2626
wenzelm@28114
  2627
* The 'axiomatization' command now only works within a global theory
wenzelm@28114
  2628
context.  INCOMPATIBILITY.
wenzelm@28114
  2629
wenzelm@30845
  2630
* Goal-directed proof now enforces strict proof irrelevance wrt. sort
wenzelm@30845
  2631
hypotheses.  Sorts required in the course of reasoning need to be
wenzelm@30845
  2632
covered by the constraints in the initial statement, completed by the
wenzelm@30845
  2633
type instance information of the background theory.  Non-trivial sort
wenzelm@30845
  2634
hypotheses, which rarely occur in practice, may be specified via
wenzelm@30845
  2635
vacuous propositions of the form SORT_CONSTRAINT('a::c).  For example:
wenzelm@30845
  2636
wenzelm@30845
  2637
  lemma assumes "SORT_CONSTRAINT('a::empty)" shows False ...
wenzelm@30845
  2638
wenzelm@30845
  2639
The result contains an implicit sort hypotheses as before --
wenzelm@30845
  2640
SORT_CONSTRAINT premises are eliminated as part of the canonical rule
wenzelm@30845
  2641
normalization.
wenzelm@30845
  2642
wenzelm@30845
  2643
* Generalized Isar history, with support for linear undo, direct state
wenzelm@30845
  2644
addressing etc.
wenzelm@30845
  2645
wenzelm@30845
  2646
* Changed defaults for unify configuration options:
wenzelm@30845
  2647
wenzelm@30845
  2648
  unify_trace_bound = 50 (formerly 25)
wenzelm@30845
  2649
  unify_search_bound = 60 (formerly 30)
wenzelm@30845
  2650
wenzelm@30845
  2651
* Different bookkeeping for code equations (INCOMPATIBILITY):
wenzelm@30845
  2652
wenzelm@30845
  2653
  a) On theory merge, the last set of code equations for a particular
wenzelm@30845
  2654
     constant is taken (in accordance with the policy applied by other
wenzelm@30845
  2655
     parts of the code generator framework).
wenzelm@30845
  2656
wenzelm@30845
  2657
  b) Code equations stemming from explicit declarations (e.g. code
wenzelm@30845
  2658
     attribute) gain priority over default code equations stemming
wenzelm@30845
  2659
     from definition, primrec, fun etc.
wenzelm@30845
  2660
wenzelm@30845
  2661
* Keyword 'code_exception' now named 'code_abort'.  INCOMPATIBILITY.
wenzelm@30845
  2662
haftmann@30965
  2663
* Unified theorem tables for both code generators.  Thus [code
wenzelm@30845
  2664
func] has disappeared and only [code] remains.  INCOMPATIBILITY.
wenzelm@30577
  2665
wenzelm@30577
  2666
* Command 'find_consts' searches for constants based on type and name
wenzelm@30577
  2667
patterns, e.g.
kleing@29883
  2668
kleing@29883
  2669
    find_consts "_ => bool"
kleing@29883
  2670
wenzelm@30106
  2671
By default, matching is against subtypes, but it may be restricted to
wenzelm@30728
  2672
the whole type.  Searching by name is possible.  Multiple queries are
wenzelm@30106
  2673
conjunctive and queries may be negated by prefixing them with a
wenzelm@30106
  2674
hyphen:
kleing@29883
  2675
kleing@29883
  2676
    find_consts strict: "_ => bool" name: "Int" -"int => int"
kleing@29861
  2677
wenzelm@30845
  2678
* New 'find_theorems' criterion "solves" matches theorems that
wenzelm@30845
  2679
directly solve the current goal (modulo higher-order unification).
wenzelm@30845
  2680
wenzelm@30845
  2681
* Auto solve feature for main theorem statements: whenever a new goal
wenzelm@30845
  2682
is stated, "find_theorems solves" is called; any theorems that could
wenzelm@30845
  2683
solve the lemma directly are listed as part of the goal state.
wenzelm@30845
  2684
Cf. associated options in Proof General Isabelle settings menu,
wenzelm@30845
  2685
enabled by default, with reasonable timeout for pathological cases of