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src/HOL/Algebra/abstract/PID.thy
author paulson
Thu, 28 Jul 2005 17:54:39 +0200
changeset 16954 82d0a25c5a1d
parent 7998 3d0c34795831
child 17479 68a7acb5f22e
permissions -rw-r--r--
new function trim_ends

(*
    Principle ideal domains
    $Id$
    Author: Clemens Ballarin, started 5 October 1999
*)

PID = Ideal +

instance
  pid < factorial	(TrueI, pid_irred_imp_prime)

end
isabelle