isa/Example.ML


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(*
    Example proof script for Isabelle Proof General.

    $Id$
*)

Goal "A & B --> B & A";
  by (rtac impI 1);
  by (etac conjE 1);
  by (rtac conjI 1);
  by (assume_tac 1);
  by (assume_tac 1);
qed "and_comms";