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src/HOL/ex/Puzzle.thy
author paulson
Mon, 22 Oct 2001 11:54:22 +0200
changeset 11868 56db9f3a6b3e
parent 8018 bedd0beabbae
child 13116 baabb0fd2ccf
permissions -rw-r--r--
Numerals now work for the integers: the binary numerals for 0 and 1 rewrite to their abstract counterparts, while other binary numerals work correctly.
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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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A question from "Bundeswettbewerb Mathematik"








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*)













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Puzzle = Main +








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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















isabelle