src/HOL/Data_Structures/AA_Set.thy
Mon, 23 Apr 2018 08:09:50 +0200 nipkow del_max -> split_max
Sun, 08 Apr 2018 12:31:08 +0200 nipkow moved and renamed lemmas
Thu, 15 Feb 2018 12:11:00 +0100 wenzelm more symbols;
less more (0) -10 -3 tip