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doc-src/AxClass/Group/Semigroup.thy
author wenzelm
Sun, 21 May 2000 01:12:00 +0200
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theory Semigroup = Main:;
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consts













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  times :: "'a \\<Rightarrow> 'a \\<Rightarrow> 'a"    (infixl "\<Otimes>" 70);













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axclass













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  semigroup < "term"













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  assoc: "(x \<Otimes> y) \<Otimes> z = x \<Otimes> (y \<Otimes> z)";













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end;














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