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Step * of Lemma no-excluded-middle-using-partial

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¬(∀P:ℙ. (P ∨ (¬P)))
BY
{ (D 0 THENA Auto) }

1
1. ∀P:ℙ. (P ∨ (¬P))
⊢ False

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Latex:

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Latex:
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\mneg{}(\mforall{}P:\mBbbP{}.  (P  \mvee{}  (\mneg{}P)))


By

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Latex:
(D  0  THENA  Auto)

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