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doc-src/Intro/gate.thy
author mengj
Fri, 18 Nov 2005 07:10:00 +0100
changeset 18200 9d476d1054d7
parent 105 216d6ed87399
permissions -rw-r--r--
-- terms are fully typed. -- only the top-level boolean terms are predicates.
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Gate = FOL +
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consts  nand,xor :: "[o,o] => o"
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rules   nand_def "nand(P,Q) == ~(P & Q)"
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        xor_def  "xor(P,Q)  == P & ~Q | ~P & Q"
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end
isabelle