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Step * 1 1 of Lemma neg_assert_of_eq_int


1. x : ℤ
2. y : ℤ
⊢ uiff(¬(x = y ∈ ℤ);x ≠ y)
BY
{ (Unfold `nequal` 0 THEN Auto) }

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Latex:

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Latex:

1.  x  :  \mBbbZ{}
2.  y  :  \mBbbZ{}
\mvdash{}  uiff(\mneg{}(x  =  y);x  \mneq{}  y)


By

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Latex:
(Unfold  `nequal`  0  THEN  Auto)

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