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105
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1 |
Gate2 = FOL +
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2 |
consts "~&" :: "[o,o] => o" (infixl 35)
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3 |
"#" :: "[o,o] => o" (infixl 30)
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4 |
If :: "[o,o,o] => o" ("if _ then _ else _")
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5 |
rules nand_def "P ~& Q == ~(P & Q)"
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6 |
xor_def "P # Q == P & ~Q | ~P & Q"
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7 |
If_def "if P then Q else R == P&Q | ~P&R"
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8 |
end
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