2010-05-14 wenzelm 2010-05-14 added Proofterm.unconstrain_thm_proof for Thm.unconstrainT -- loosely based on the version by krauss/schropp;
2010-05-13 wenzelm 2010-05-13 conditionally unconstrain thm proofs -- loosely based on the version by krauss/schropp;
2010-05-09 wenzelm 2010-05-09 reactivated Thm.legacy_unconstrainT for Nbe.lift_triv_classes_conv;
2010-05-09 wenzelm 2010-05-09 Thm.unconstrainT based on Logic.unconstrainT -- no proofterm yet;
2010-05-09 wenzelm 2010-05-09 just one version of Thm.unconstrainT, which affects all variables; temporary workaround for Nbe.lift_triv_classes_conv;
2010-05-08 wenzelm 2010-05-08 renamed Thm.get_name -> Thm.derivation_name and Thm.put_name -> Thm.name_derivation, to emphasize the true nature of these operations;
2010-05-08 wenzelm 2010-05-08 tuned signature;
2010-05-04 wenzelm 2010-05-04 proof terms for strip_shyps, based on the version by krauss/schropp with some notable differences: * present type variables are only compared wrt. first component (the atomic type), not the duplicated sort; * extra sorts are grounded towards fixed 'a, potentially with different sorts (the original version with Name.names could cause name clashes with other present variables, too, but this should not be a problem); * deriv_rule_unconditional ensures that proof terms are always maintained independently of the "proofs" flag -- this improves robustness and preserves basic PThm proofs required for extraction attributes, e.g. in theory HOL/Extraction;
2010-05-04 wenzelm 2010-05-04 renamed Proofterm.freezeT to Proofterm.legacy_freezeT (cf. 88756a5a92fc);
2010-05-03 wenzelm 2010-05-03 renamed Thm.freezeT to Thm.legacy_freezeT -- it is based on Type.legacy_freeze;
2010-05-03 wenzelm 2010-05-03 minor tuning of Thm.strip_shyps -- no longer pervasive;
2010-05-03 wenzelm 2010-05-03 simplified primitive Thm.future: more direct theory check, do not hardwire strip_shyps here;
2010-04-25 wenzelm 2010-04-25 renamed Drule.unconstrainTs to Thm.unconstrain_allTs to accomdate the version by krauss/schropp; less pervasive names;
2010-03-27 wenzelm 2010-03-27 added Term.fold_atyps_sorts convenience;
2010-03-21 wenzelm 2010-03-21 Logic.mk_of_sort convenience;
2010-03-20 wenzelm 2010-03-20 renamed varify/unvarify operations to varify_global/unvarify_global to emphasize that these only work in a global situation;
2010-02-27 wenzelm 2010-02-27 modernized structure Term_Ord;
2009-11-25 haftmann 2009-11-25 normalized uncurry take/drop
2009-11-24 haftmann 2009-11-24 curried take/drop
2009-11-21 wenzelm 2009-11-21 explicitly mark some legacy freeze operations;
2009-11-16 wenzelm 2009-11-16 generalized procs for rewrite_proof: allow skeleton; fulfill_norm_proof: always normalize result here, no re-normalization after filling;
2009-11-15 wenzelm 2009-11-15 tuned;
2009-11-08 wenzelm 2009-11-08 adapted Theory_Data; tuned;
2009-10-25 wenzelm 2009-10-25 make SML/NJ happy;
2009-10-24 wenzelm 2009-10-24 maintain explicit name space kind; export Name_Space.the_entry; tuned messages;
2009-10-24 wenzelm 2009-10-24 renamed NameSpace to Name_Space -- also to emphasize its subtle change in semantics;
2009-10-24 wenzelm 2009-10-24 eliminated separate stamp -- NameSpace.define/merge etc. ensure uniqueness already;
2009-10-21 haftmann 2009-10-21 curried inter as canonical list operation (beware of argument order)
2009-10-21 haftmann 2009-10-21 dropped redundant gen_ prefix
2009-10-20 haftmann 2009-10-20 replaced old_style infixes eq_set, subset, union, inter and variants by generic versions
2009-10-01 wenzelm 2009-10-01 back to simple fold_body_thms and fulfill_proof/thm_proof (reverting a900d3cd47cc) -- the cycle check is implicit in the future computation of join_proofs;
2009-09-30 wenzelm 2009-09-30 eliminated redundant bindings;
2009-09-28 wenzelm 2009-09-28 fold_body_thms: pass pthm identifier; fold_body_thms: dismiss path-etic attempt to check for cycles (cf. e24acd21e60e) -- could be masked by "seen"; fulfill_proof/thm_proof: check for thm cycles at the substitution point;
2009-09-28 wenzelm 2009-09-28 tuned internal source structure;
2009-09-16 wenzelm 2009-09-16 replaced opaque signature matching by plain old abstype (again, cf. ac4498f95d1c) -- this recovers pretty printing in SML/NJ and Poly/ML 5.3;
2009-07-26 wenzelm 2009-07-26 lambda/cabs/all: named variants;
2009-07-21 wenzelm 2009-07-21 simultaneous join_proofs; removed obsolete promises_of;
2009-07-21 wenzelm 2009-07-21 prefer simultaneous join -- for improved scheduling;
2009-07-19 wenzelm 2009-07-19 support for arbitrarity nested future proofs -- replaced crude order by explicit normalization (which might loop for bad dependencies); export promises_of; removed obsolete pending_groups; tuned;
2009-07-17 wenzelm 2009-07-17 tuned/modernized Envir.subst_XXX;
2009-07-17 wenzelm 2009-07-17 tuned/modernized Envir operations;
2009-07-16 wenzelm 2009-07-16 tuned incr_indexes;
2009-07-09 wenzelm 2009-07-09 renamed structure TermSubst to Term_Subst;
2009-07-06 wenzelm 2009-07-06 clarified strip_shyps: proper type witnesses for present sorts; moved fold_terms to thm.ML;
2009-07-06 wenzelm 2009-07-06 structure Thm: less pervasive names;
2009-07-06 wenzelm 2009-07-06 clarified Thm.of_class/of_sort/class_triv;
2009-07-06 wenzelm 2009-07-06 renamed inclass/Inclass to of_class/OfClass, in accordance to of_sort;
2009-07-02 wenzelm 2009-07-02 strip_shyps: remove top sort, which is logically insignificant;
2009-07-02 wenzelm 2009-07-02 added pro-forma proof constructor Inclass;
2009-03-25 wenzelm 2009-03-25 fulfill_proof/thm_proof: pass whole proof_body, not just the projection to proof (which might be incomplete); more explicit oracle_proof;
2009-03-24 wenzelm 2009-03-24 status_of: need to include local promises as well!
2009-03-24 wenzelm 2009-03-24 display derivation status of thms;
2009-03-17 wenzelm 2009-03-17 eq_assumption: slightly more efficient by checking (open) result of Logic.assum_problems directly; tuned;
2009-03-16 wenzelm 2009-03-16 substantial speedup of assumption and elim-resolution: Logic.assum_problems refrains from eager application of parameters, discriminate via Term.could_unify before invoking full unification (assumes terms in beta-normal form, as do higher term net operations anyway);
2009-03-12 wenzelm 2009-03-12 renamed NameSpace.bind to NameSpace.define;
2009-03-07 wenzelm 2009-03-07 moved Thm.def_name(_optional) to more_thm.ML; moved old-style Thm.get_def to Drule.get_def;
2009-03-05 wenzelm 2009-03-05 Thm.add_oracle interface: replaced old bstring by binding;
2009-01-27 wenzelm 2009-01-27 thm_proof: replaced lazy by composed futures;
2009-01-10 wenzelm 2009-01-10 future_result: avoid expensive norm_proof (consider usedir option -Q false in low-memory situations);
2009-01-10 wenzelm 2009-01-10 added pending_groups -- accumulates task groups of local derivations only;