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ex/Puzzle.thy
author lcp
Thu, 13 Oct 1994 09:39:15 +0100
changeset 153 c0ff8f1ebc16
parent 0 7949f97df77a
permissions -rw-r--r--
HOL/HOL.ML/selectI2: new rule for descriptions
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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