Fri, 14 Mar 2003 10:30:46 +0100 paulson Proved the main lemma on progress sets
Fri, 14 Mar 2003 10:30:15 +0100 paulson new UN/INT simprules
Thu, 13 Mar 2003 18:54:38 +0100 berghofe split_name no longer uses Sign.string_of_typ to encode types, since
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