2014-07-05 haftmann 2014-07-05 prefer ac_simps collections over separate name bindings for add and mult
2014-06-28 haftmann 2014-06-28 fact consolidation
2011-12-28 wenzelm 2011-12-28 reverted some changes for set->predicate transition, according to "hg log -u berghofe -r Isabelle2007:Isabelle2008"; tuned proofs;
2011-11-20 wenzelm 2011-11-20 eliminated obsolete "standard";
2011-11-13 huffman 2011-11-13 remove unnecessary number-representation-specific rules from metis calls; speed up another proof
2011-09-06 huffman 2011-09-06 avoid using legacy theorem names
2010-11-28 nipkow 2010-11-28 gave more standard finite set rules simp and intro attribute
2010-08-06 wenzelm 2010-08-06 modernized specifications; tuned headers;
2010-03-02 krauss 2010-03-02 killed more recdefs
2009-10-17 wenzelm 2009-10-17 eliminated hard tabulators, guessing at each author's individual tab-width; tuned headers;
2009-09-01 haftmann 2009-09-01 some reorganization of number theory