2012-03-25 ago merged fork with new numeral representation (see NEWS)
2011-06-29 ago modernized some simproc setup;
2011-05-13 ago clarified map_simpset versus Simplifier.map_simpset_global;
2010-08-28 ago formerly unnamed infix equality now named HOL.eq
2010-08-26 ago Fast_Lin_Arith.number_of: more conventional merge that prefers the left side -- note that former ordering wrt. serial numbers makes it depend on accidental load order;
2010-08-25 ago renamed Simplifier.simproc(_i) to Simplifier.simproc_global(_i) to emphasize that this is not the real thing;
2010-05-15 ago less pervasive names from structure Thm;
2010-02-19 ago moved remaning class operations from Algebras.thy to Groups.thy
2010-02-10 ago moved less_eq, less to Orderings.thy; moved abs, sgn to Groups.thy
2010-02-05 ago more consistent naming of type classes involving orderings (and lattices) -- c.f. NEWS
2010-01-28 ago new theory Algebras.thy for generic algebraic structures
2009-10-28 ago moved theory Divides after theory Nat_Numeral; tuned some proof texts
2009-09-18 ago tuned const_name antiquotations
2009-06-08 ago fast_lin_arith uses proper multiplication instead of unfolding to additions
2009-05-11 ago qualified names for Lin_Arith tactics and simprocs
2009-05-11 ago tuned interface of Lin_Arith
2009-05-09 ago interface changes in linarith.ML
2009-05-08 ago modules numeral_simprocs, nat_numeral_simprocs; proper structures for numeral simprocs
2009-04-29 ago reimplement reorientation simproc using theory data
2009-03-30 ago simplify theorem references
2009-03-26 ago parameterize assoc_fold with is_numeral predicate
2009-03-23 ago structure LinArith now named Lin_Arith
2009-03-13 ago moved some generic nonsense to arith_data.ML
2009-03-12 ago vague cleanup in arith proof tools setup: deleted dead code, more proper structures, clearer arrangement
2008-12-31 ago moved term order operations to structure TermOrd (cf. Pure/term_ord.ML);
2008-12-03 ago made repository layout more coherent with logical distribution structure; stripped some $Id$s