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Step * of Lemma r2-det-antisymmetry

∀[p,q,r:ℝ^2].  (|pqr| = -(|prq|))
BY
{ ((Auto THEN Unfold `r2-det` 0) THEN Auto) }

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Latex:

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Latex:
\mforall{}[p,q,r:\mBbbR{}\^{}2].    (|pqr|  =  -(|prq|))


By

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Latex:
((Auto  THEN  Unfold  `r2-det`  0)  THEN  Auto)

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