src/HOL/Algebra/abstract/PID.thy
author narboux
Sat, 07 Apr 2007 11:05:25 +0200
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perm_simp can now simplify using the rules (a,b) o a = b and (a,b) o b = a
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(*
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    Principle ideal domains
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    $Id$
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    Author: Clemens Ballarin, started 5 October 1999
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*)
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theory PID imports Ideal2 begin
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instance pid < factorial
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  apply intro_classes
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   apply (rule TrueI)
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  apply (erule pid_irred_imp_prime)
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  done
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end