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src/HOL/AxClasses/Group/Monoid.thy
author wenzelm
Thu, 23 Oct 1997 12:48:48 +0200
changeset 3979 dac05c9341f4
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(*  Title:      Monoid.thy
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    ID:         $Id$
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    Author:     Markus Wenzel, TU Muenchen
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*)
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Monoid = Sigs +













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(* monoids *)













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axclass













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  monoid < times, one













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  assoc         "(x * y) * z = x * (y * z)"













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  left_unit     "1 * x = x"













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  right_unit    "x * 1 = x"













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end















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