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ex/Puzzle.thy
author clasohm
Wed, 02 Nov 1994 11:50:09 +0100
changeset 156 fd1be45b64bf
parent 0 7949f97df77a
permissions -rw-r--r--
added IOA to isabelle/HOL
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(*  Title: 	HOL/ex/puzzle.thy
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    ID:         $Id$
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    Author: 	Tobias Nipkow
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    Copyright   1993 TU Muenchen
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An question from "Bundeswettbewerb Mathematik"













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*)













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Puzzle = Nat +













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consts f :: "nat => nat"













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rules  f_ax "f(f(n)) < f(Suc(n))"













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end















Old_HOL