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Step * of Lemma rcp_wf

∀[a,b:ℝ^3].  ((a x b) ∈ ℝ^3)
BY
{ (Unfolds ``real-vec rcp`` 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[a,b:\mBbbR{}\^{}3].    ((a  x  b)  \mmember{}  \mBbbR{}\^{}3)


By

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Latex:
(Unfolds  ``real-vec  rcp``  0  THEN  Auto)

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