Step
*
1
of Lemma
qdiv-self
1. r : ℚ
2. ¬(r = 0 ∈ ℚ)
⊢ (r * 1/r) = 1 ∈ ℚ
BY
{ (BLemma `qmul_inv` THEN Auto) }
Latex:
Latex:
1. r : \mBbbQ{}
2. \mneg{}(r = 0)
\mvdash{} (r * 1/r) = 1
By
Latex:
(BLemma `qmul\_inv` THEN Auto)
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