src/HOL/Data_Structures/Tree23_Set.thy
Thu, 29 Aug 2019 13:07:56 +0200 nipkow tuned proof
Mon, 20 May 2019 17:33:13 +0200 nipkow tuned names
Thu, 16 May 2019 19:43:21 +0200 nipkow tuned name
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