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doc-src/Intro/gate.thy
author chaieb
Sat, 20 Oct 2007 12:09:30 +0200
changeset 25111 d52a58b51f1f
parent 105 216d6ed87399
permissions -rw-r--r--
neq0_conv removed from [iff] -- causes problems by simple goals with blast, auto etc...

Gate = FOL +
consts  nand,xor :: "[o,o] => o"
rules   nand_def "nand(P,Q) == ~(P & Q)"
        xor_def  "xor(P,Q)  == P & ~Q | ~P & Q"
end
isabelle