Wed, 30 Oct 1996 11:19:09 +0100 paulson Changed some mem calls to mem_string for greater efficiency (not that it could matter)
Wed, 30 Oct 1996 11:17:54 +0100 paulson Minor updates
Wed, 30 Oct 1996 11:15:09 +0100 paulson Updated references
Mon, 28 Oct 1996 15:59:39 +0100 paulson Minor corrections
Mon, 28 Oct 1996 15:36:18 +0100 nipkow Renamed and shuffled a few thms.
Mon, 28 Oct 1996 13:02:37 +0100 paulson Simplified proofs
Mon, 28 Oct 1996 13:01:25 +0100 paulson Tidied up a big mess in UN_parts_sees_Says
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