src/HOL/Data_Structures/AVL_Bal_Set.thy
Fri, 08 May 2020 13:19:55 +0200 nipkow avoid hidden undef cases
Wed, 06 May 2020 15:31:24 +0200 nipkow simplified and tuned
Wed, 06 May 2020 13:52:01 +0200 nipkow tuned
less more (0) -3 tip