src/HOL/GroupTheory/Group.thy
Fri, 09 Nov 2001 00:09:47 +0100 wenzelm eliminated old "symbols" syntax, use "xsymbols" instead;
Tue, 03 Jul 2001 15:28:24 +0200 paulson Locale-based group theory proofs
Sun, 10 Jun 2001 08:03:35 +0200 paulson new GroupTheory example, e.g. the Sylow theorem (preliminary version)
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