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ex/puzzle.thy
author convert-repo
Thu, 23 Jul 2009 14:03:20 +0000
changeset 255 435bf30c29a5
parent 0 7949f97df77a
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(*  Title: 	HOL/ex/puzzle.thy
    ID:         $Id$
    Author: 	Tobias Nipkow
    Copyright   1993 TU Muenchen

An question from "Bundeswettbewerb Mathematik"
*)

Puzzle = Nat +
consts f :: "nat => nat"
rules  f_ax "f(f(n)) < f(Suc(n))"
end
Old_HOL