src/HOL/Algebra/Ring.thy
2012-08-22 wenzelm 2012-08-22 prefer ML_file over old uses;
2012-04-23 wenzelm 2012-04-23 more standard method setup;
2012-04-09 wenzelm 2012-04-09 tuned proofs;
2012-02-27 wenzelm 2012-02-27 tuned proofs;
2011-09-03 wenzelm 2011-09-03 misc tuning and simplification of proofs;
2011-03-13 wenzelm 2011-03-13 tuned headers;
2011-01-06 ballarin 2011-01-06 Abelian group facts obtained from group facts via interpretation (sublocale).
2010-03-21 wenzelm 2010-03-21 standard headers;
2010-03-21 wenzelm 2010-03-21 slightly more uniform definitions -- eliminated old-style meta-equality;
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)
2010-02-08 wenzelm 2010-02-08 modernized some syntax translations;
2008-12-16 ballarin 2008-12-16 More porting to new locales.
2008-11-17 haftmann 2008-11-17 tuned unfold_locales invocation
2008-08-18 ballarin 2008-08-18 Theorem on polynomial division and lemmas.
2008-08-01 ballarin 2008-08-01 Generalised polynomial lemmas from cring to ring.
2008-07-31 ballarin 2008-07-31 Tuned (for the sake of a meaningless log entry).
2008-07-29 ballarin 2008-07-29 New theorems on summation.
2008-07-15 ballarin 2008-07-15 Removed uses of context element includes.
2008-03-05 wenzelm 2008-03-05 explicit referencing of background facts;
2007-07-24 ballarin 2007-07-24 Interpretation of rings (as integers) maps defined operations to defined operations..
2007-06-13 wenzelm 2007-06-13 tuned proofs: avoid implicit prems;
2007-02-07 berghofe 2007-02-07 Adapted to changes in Finite_Set theory.
2006-12-22 ballarin 2006-12-22 Experimenting with interpretations of "definition".
2006-08-03 ballarin 2006-08-03 Restructured algebra library, added ideals and quotient rings.