2010-03-21 wenzelm 2010-03-21 eliminated old constdefs;
2010-03-01 haftmann 2010-03-01 replaced a couple of constsdefs by definitions (also some old primrecs by modern ones)
2010-02-22 haftmann 2010-02-22 switched notations for pointwise and multiset order
2009-10-17 wenzelm 2009-10-17 eliminated hard tabulators, guessing at each author's individual tab-width; tuned headers;
2009-08-31 nipkow 2009-08-31 tuned the simp rules for Int involving insert and intervals.
2008-12-16 ballarin 2008-12-16 More porting to new locales.
2008-11-17 haftmann 2008-11-17 tuned unfold_locales invocation
2008-10-15 ballarin 2008-10-15 Removed 'includes' (fixed).
2008-10-15 ballarin 2008-10-15 Removed 'includes'.
2008-08-01 ballarin 2008-08-01 Generalised polynomial lemmas from cring to ring.
2008-07-30 ballarin 2008-07-30 New locales for orders and lattices where the equivalence relation is not restricted to equality.
2008-07-29 ballarin 2008-07-29 New theory on divisibility.