Step
*
of Lemma
not-lt
∀x,y:ℤ. uiff(¬x < y;y ≤ x)
BY
{ Auto }
1
1. x : ℤ@i
2. y : ℤ@i
3. ¬x < y
⊢ y ≤ x
2
1. x : ℤ@i
2. y : ℤ@i
3. y ≤ x
⊢ ¬x < y
Latex:
Latex:
\mforall{}x,y:\mBbbZ{}. uiff(\mneg{}x < y;y \mleq{} x)
By
Latex:
Auto
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