src/HOL/Data_Structures/Tree_Set.thy
Sat, 21 Apr 2018 08:41:42 +0200 nipkow del_min -> split_min
Sun, 08 Apr 2018 11:05:52 +0200 nipkow more name tuning
Sun, 08 Apr 2018 09:46:33 +0200 nipkow better name; added binary operations
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