Step
*
of Lemma
qmul-qdiv
∀[a,b,c,d:ℚ]. (((a/c) * (b/d)) = (a * b/c * d) ∈ ℚ) supposing ((¬(d = 0 ∈ ℚ)) and (¬(c = 0 ∈ ℚ)))
BY
{ (Auto THEN (QMul ⌜c⌝ 0⋅ THENM Try (QMul ⌜d⌝ 0⋅))) }
Latex:
Latex:
\mforall{}[a,b,c,d:\mBbbQ{}]. (((a/c) * (b/d)) = (a * b/c * d)) supposing ((\mneg{}(d = 0)) and (\mneg{}(c = 0)))
By
Latex:
(Auto THEN (QMul \mkleeneopen{}c\mkleeneclose{} 0\mcdot{} THENM Try (QMul \mkleeneopen{}d\mkleeneclose{} 0\mcdot{})))
Home
Index