Sun, 21 Aug 2011 22:13:04 +0200 added proof of idempotence, roughly after HOL/Subst/Unify.thy
krauss [Sun, 21 Aug 2011 22:13:04 +0200] rev 44371
added proof of idempotence, roughly after HOL/Subst/Unify.thy
Sun, 21 Aug 2011 22:13:04 +0200 tuned proofs, sledgehammering overly verbose parts
krauss [Sun, 21 Aug 2011 22:13:04 +0200] rev 44370
tuned proofs, sledgehammering overly verbose parts
Sun, 21 Aug 2011 22:13:04 +0200 tuned notation
krauss [Sun, 21 Aug 2011 22:13:04 +0200] rev 44369
tuned notation
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