2007-02-07 berghofe 2007-02-07 Adapted to changes in Finite_Set theory.
2006-11-17 wenzelm 2006-11-17 more robust syntax for definition/abbreviation/notation;
2006-11-10 wenzelm 2006-11-10 tuned;
2006-11-07 wenzelm 2006-11-07 tuned specifications;
2006-10-09 wenzelm 2006-10-09 attribute symmetric: zero_var_indexes;
2006-07-31 webertj 2006-07-31 lin_arith_prover splits certain operators (e.g. min, max, abs)
2006-07-26 webertj 2006-07-26 linear arithmetic splits certain operators (e.g. min, max, abs)
2005-12-08 wenzelm 2005-12-08 tuned sources and proofs
2005-07-12 avigad 2005-07-12 added lemmas to OrderedGroup.thy (reasoning about signs, absolute value, triangle inequalities) added lemmas to Ring_and_Field.thy (reasoning about signs, fractions, etc.) renamed simplification rules for abs (abs_of_pos, etc.) renamed rules for multiplication and signs (mult_pos_pos, etc.) moved lemmas involving fractions from NatSimprocs.thy added setsum_mono3 to FiniteSet.thy added simplification rules for powers to Parity.thy
2005-07-07 nipkow 2005-07-07 linear arithmetic now takes "&" in assumptions apart.
2005-07-01 nipkow 2005-07-01 prime is a predicate now.
2005-06-17 haftmann 2005-06-17 migrated theory headers to new format
2004-12-09 nipkow 2004-12-09 First step in reorganizing Finite_Set
2004-06-21 kleing 2004-06-21 Merged in license change from Isabelle2004
2004-01-12 paulson 2004-01-12 Added lemmas to Ring_and_Field with slightly modified simplification rules Deleted some little-used integer theorems, replacing them by the generic ones in Ring_and_Field Consolidated integer powers
2003-12-03 paulson 2003-12-03 Simplification of the development of Integers
2003-03-20 paulson 2003-03-20 Gauss's law of quadratic reciprocity by Avigad, Gray and Kramer