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Step * of Lemma real-vec-mul-mul

∀[n:ℕ]. ∀[X:ℝ^n]. ∀[a,b:ℝ].  req-vec(n;a*b*X;a * b*X)
BY
{ (Auto THEN RepUR ``req-vec real-vec-mul`` 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[n:\mBbbN{}].  \mforall{}[X:\mBbbR{}\^{}n].  \mforall{}[a,b:\mBbbR{}].    req-vec(n;a*b*X;a  *  b*X)


By

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Latex:
(Auto  THEN  RepUR  ``req-vec  real-vec-mul``  0  THEN  Auto)

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