Step
*
of Lemma
geo-out-strict_inversion
∀e:BasicGeometry. ∀a,b,c:Point.  (geo-out-strict(e;a;b;c) 
⇒ geo-out-strict(e;a;c;b))
BY
{ RepeatFor 5 ((D 0 THENA Auto))
THEN Unfold `geo-out-strict` (-1)
THEN Unfold `geo-out-strict` 0
THEN Auto }
Latex:
Latex:
\mforall{}e:BasicGeometry.  \mforall{}a,b,c:Point.    (geo-out-strict(e;a;b;c)  {}\mRightarrow{}  geo-out-strict(e;a;c;b))
By
Latex:
RepeatFor  5  ((D  0  THENA  Auto))
THEN  Unfold  `geo-out-strict`  (-1)
THEN  Unfold  `geo-out-strict`  0
THEN  Auto
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