isabelle: Changelog

wenzelm [Wed, 03 Apr 2019 21:50:00 +0200] rev 70047

clarified signature: more explicit operations for corresponding Isar commands;

wenzelm [Wed, 03 Apr 2019 21:11:21 +0200] rev 70046

proper URL;

paulson <lp15@cam.ac.uk> [Thu, 04 Apr 2019 16:38:45 +0100] rev 70045

fixed markup in Poly_Mapping; Free_Abelian_Groups (but not yet imported by Algebra!)

paulson <lp15@cam.ac.uk> [Thu, 04 Apr 2019 14:19:33 +0100] rev 70044

More group theory. Sum and product indexed by the non-neutral part of a set

paulson <lp15@cam.ac.uk> [Wed, 03 Apr 2019 16:38:59 +0100] rev 70043

theory Poly_Mapping

paulson <lp15@cam.ac.uk> [Wed, 03 Apr 2019 16:38:27 +0100] rev 70042

new theory Library/Poly_Mapping, of almost-everywhere-zero functions

paulson <lp15@cam.ac.uk> [Wed, 03 Apr 2019 15:14:36 +0100] rev 70041

Material concerning exact sequences of groups

isabelle