src/HOL/ex/AVL.thy
Tue, 23 Oct 2001 22:52:31 +0200 wenzelm eliminated old numerals;
Fri, 05 Oct 2001 21:52:39 +0200 wenzelm sane numerals (stage 1): added generic 1, removed 1' and 2 on nat,
Fri, 05 May 2000 12:51:33 +0200 nipkow Added AVL
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