lib/logo/isabelle.gif
author paulson
Thu, 08 Jul 1999 13:38:41 +0200
changeset 6915 4ab8e31a8421
parent 3799 d00f6460ac4d
permissions -rw-r--r--
Now if_weak_cong is a standard congruence rule
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d00f6460ac4d The Isabelle Logo;
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