Tue, 19 Jul 2011 14:37:09 +0200 hoelzl Introduce infinity type class
Tue, 19 Jul 2011 14:36:12 +0200 hoelzl Rename extreal => ereal
Tue, 19 Jul 2011 14:35:44 +0200 hoelzl rename Nat_Infinity (inat) to Extended_Nat (enat)
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