Fri, 23 Dec 1994 16:35:42 +0100 lcp Added Krzysztof's theorems irrefl_converse, trans_on_converse,
Fri, 23 Dec 1994 16:35:08 +0100 lcp Added Krzysztof's theorems irrefl_rvimage, trans_on_rvimage,
Fri, 23 Dec 1994 16:34:27 +0100 lcp singleton_iff: new
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