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src/HOL/ex/Puzzle.thy
author lcp
Tue, 25 Apr 1995 11:14:03 +0200
changeset 1072 0140ff702b23
parent 969 b051e2fc2e34
child 1376 92f83b9d17e1
permissions -rw-r--r--
updated version

(*  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
isabelle