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src/HOL/AxClasses/Product.thy
author haftmann
Wed, 21 Jan 2009 23:40:23 +0100
changeset 29609 a010aab5bed0
parent 16417 9bc16273c2d4
permissions -rw-r--r--
changed import hierarchy

(*  Title:      HOL/AxClasses/Product.thy
    ID:         $Id$
    Author:     Markus Wenzel, TU Muenchen
*)

theory Product imports Main begin

axclass product < type

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


instance bool :: product
  by intro_classes

defs (overloaded)
  product_bool_def: "x [*] y == x & y"

end
isabelle