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doc-src/Intro/gate.thy
author blanchet
Fri, 20 Aug 2010 10:58:01 +0200
changeset 38608 01ed56c46259
parent 105 216d6ed87399
permissions -rw-r--r--
beta eta contract the Sledgehammer conjecture (and also the axioms, although this might not be needed), just like Metis does (implicitly); another consequence of the transition to FOF
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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