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Step * of Lemma point-perspective_wf

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∀g:ProjectivePlane. ∀a,b,c,A,B,C,o:Point.  (pPerspective(PΔ(a;b;c);PΔ(A;B;C);o) ∈ ℙ)
BY
{ (Auto THEN Unfold `point-perspective` 0 THEN Auto) }

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Latex:

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Latex:
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\mforall{}g:ProjectivePlane.  \mforall{}a,b,c,A,B,C,o:Point.    (pPerspective(P\mDelta{}(a;b;c);P\mDelta{}(A;B;C);o)  \mmember{}  \mBbbP{})


By

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Latex:
(Auto  THEN  Unfold  `point-perspective`  0  THEN  Auto)

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