Step
*
of Lemma
qmul-qdiv-cancel5
∀[a,b,c:ℚ]. ((a * (b/a * c)) = (b/c) ∈ ℚ) supposing ((¬(c = 0 ∈ ℚ)) and (¬(a = 0 ∈ ℚ)))
BY
{ xxx(Auto THEN QMul ⌜c⌝ 0⋅ THEN Auto)xxx }
1
1. a : ℚ
2. b : ℚ
3. c : ℚ
4. ¬(a = 0 ∈ ℚ)
5. ¬(c = 0 ∈ ℚ)
⊢ ¬((a * c) = 0 ∈ ℚ)
Latex:
Latex:
\mforall{}[a,b,c:\mBbbQ{}]. ((a * (b/a * c)) = (b/c)) supposing ((\mneg{}(c = 0)) and (\mneg{}(a = 0)))
By
Latex:
xxx(Auto THEN QMul \mkleeneopen{}c\mkleeneclose{} 0\mcdot{} THEN Auto)xxx
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