src/HOL/AxClasses/Group/Monoid.thy
author wenzelm
Mon, 29 Nov 1999 15:52:49 +0100
changeset 8039 a901bafe4578
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Goal: tuned pris;
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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