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11 строки
213 B
Plaintext
11 строки
213 B
Plaintext
|- turnstyle (Frege)
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Meet - GLB (Lower semilattice)
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Join - LUB (Upper semilattice)
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Weekening
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G |- A true => G,B true |- A true
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Contraction
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We can use assumption twice
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Exchange
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Order does not matter
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