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src/HOL/AxClasses/Product.thy
author paulson
Wed, 28 Nov 2007 16:26:03 +0100
changeset 25492 4cc7976948ac
parent 16417 9bc16273c2d4
permissions -rw-r--r--
Chained theorems are no longer mentioned in metis calls and (if used) they prevent the output of a structured proof.
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(*  Title:      HOL/AxClasses/Product.thy
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    ID:         $Id$
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    Author:     Markus Wenzel, TU Muenchen
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*)
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theory Product imports Main begin








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axclass product < type








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consts













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  product :: "'a::product => 'a => 'a"    (infixl "[*]" 70)













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instance bool :: product













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  by intro_classes













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defs (overloaded)













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  product_bool_def: "x [*] y == x & y"













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end















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