src/HOL/Complex/ex/Sqrt.thy
Sun, 17 Jun 2007 18:47:03 +0200 nipkow tuned laws for cancellation in divisions for fields.
Fri, 17 Nov 2006 02:20:03 +0100 wenzelm more robust syntax for definition/abbreviation/notation;
Thu, 16 Feb 2006 21:12:00 +0100 wenzelm new-style definitions/abbreviations;
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