Step
*
of Lemma
qabs-qinv
No Annotations
∀[s:{s:ℚ| ¬(s = 0 ∈ ℚ)} ]. (|1/s| = 1/|s| ∈ ℚ)
BY
{ (Auto THEN Assert ⌜(¬(s = 0 ∈ ℚ)) ∧ (¬(|s| = 0 ∈ ℚ))⌝⋅) }
1
.....assertion.....
1. s : {s:ℚ| ¬(s = 0 ∈ ℚ)}
⊢ (¬(s = 0 ∈ ℚ)) ∧ (¬(|s| = 0 ∈ ℚ))
2
1. s : {s:ℚ| ¬(s = 0 ∈ ℚ)}
2. (¬(s = 0 ∈ ℚ)) ∧ (¬(|s| = 0 ∈ ℚ))
⊢ |1/s| = 1/|s| ∈ ℚ
Latex:
Latex:
No Annotations
\mforall{}[s:\{s:\mBbbQ{}| \mneg{}(s = 0)\} ]. (|1/s| = 1/|s|)
By
Latex:
(Auto THEN Assert \mkleeneopen{}(\mneg{}(s = 0)) \mwedge{} (\mneg{}(|s| = 0))\mkleeneclose{}\mcdot{})
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