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src/HOL/ex/Puzzle.thy
author paulson
Wed, 13 Nov 1996 10:47:08 +0100
changeset 2183 8d42a7bccf0b
parent 1476 608483c2122a
child 2222 a3fb552f10e3
permissions -rw-r--r--
Updated version and date

(*  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