Thu, 04 Apr 1996 11:45:01 +0200 paulson Using new "Times" infix
Thu, 04 Apr 1996 11:43:25 +0200 paulson For renaming to rtrancl_Un_rtrancl
Thu, 04 Apr 1996 11:41:35 +0200 paulson Added more _iff rewrites for Compl, Un, Int
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