Step
*
of Lemma
qmul_inv
∀[r:ℚ]. (r * 1/r) = 1 ∈ ℚ supposing ¬(r = 0 ∈ ℚ)
BY
{ (Auto THEN (RWW "assert-qeq<" 0 THENA (Auto THEN RW assert_pushdownC 0 THEN Auto))) }
1
1. r : ℚ
2. ¬(r = 0 ∈ ℚ)
⊢ ↑qeq(r * 1/r;1)
Latex:
Latex:
\mforall{}[r:\mBbbQ{}]. (r * 1/r) = 1 supposing \mneg{}(r = 0)
By
Latex:
(Auto THEN (RWW "assert-qeq<" 0 THENA (Auto THEN RW assert\_pushdownC 0 THEN Auto)))
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