Thu, 06 Apr 1995 12:24:56 +0200 lcp Modified proofs for new hyp_subst_tac.
Thu, 06 Apr 1995 12:22:26 +0200 lcp Modified proofs for new hyp_subst_tac, and simplified them.
Thu, 06 Apr 1995 12:20:48 +0200 lcp Received some local definitions from AC_Equiv.thy.
Thu, 06 Apr 1995 12:19:34 +0200 lcp Moved some local definitions to WO6_WO1.ML
Thu, 06 Apr 1995 12:17:40 +0200 lcp Proved if_iff and used it to simplify proof of if_type.
Thu, 06 Apr 1995 12:15:27 +0200 lcp Now the classical sets include UN_E, to avoid calling hyp_subst_tac
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