src/HOL/Isar_Examples/Mutilated_Checkerboard.thy
Sun, 15 Jan 2023 18:30:18 +0100 wenzelm isabelle update -u cite;
Tue, 02 Aug 2016 18:44:37 +0200 wenzelm tuned;
Thu, 28 Apr 2016 11:47:01 +0200 wenzelm tuned;
less more (0) -10 -3 tip