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Step * of Lemma matrix-det-dim0

∀[r:Rng]. ∀[M:Top].  (|M| = 1 ∈ |r|)
BY
{ (Auto
   THEN Unfold `matrix-det` 0
   THEN RWO "permutations-list-0" 0
   THEN Reduce 0
   THEN RepUR ``permutation-sign let`` 0
   THEN Auto) }

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Latex:

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Latex:
\mforall{}[r:Rng].  \mforall{}[M:Top].    (|M|  =  1)


By

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Latex:
(Auto
  THEN  Unfold  `matrix-det`  0
  THEN  RWO  "permutations-list-0"  0
  THEN  Reduce  0
  THEN  RepUR  ``permutation-sign  let``  0
  THEN  Auto)

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