Wed, 22 Nov 2006 10:20:19 +0100 haftmann no explicit check for theory Nat
Wed, 22 Nov 2006 10:20:18 +0100 haftmann added code lemmas
Wed, 22 Nov 2006 10:20:17 +0100 haftmann does not import Hilber_Choice any longer
Wed, 22 Nov 2006 10:20:16 +0100 haftmann cleanup
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