src/HOL/Algebra/abstract/PID.thy
author wenzelm
Sun, 30 Jan 2011 13:02:18 +0100
changeset 41648 6d736d983d5c
parent 35849 b5522b51cb1e
permissions -rw-r--r--
clarified example settings for Proof General;

(*  Author: Clemens Ballarin, started 5 October 1999

Principle ideal domains.
*)

theory PID
imports Ideal2
begin

instance pid < factorial
  apply intro_classes
  apply (erule pid_irred_imp_prime)
  done

end