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doc-src/Intro/gate.thy
author wenzelm
Sat, 20 Aug 2011 19:21:03 +0200
changeset 44333 cc53ce50f738
parent 105 216d6ed87399
permissions -rw-r--r--
reverted to join_bodies/join_proofs based on fold_body_thms to regain performance (escpecially of HOL-Proofs) -- see also aa9c1e9ef2ce and 4e2abb045eac;
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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