Step * of Lemma eu-eq-x-implies-eq

e:EuclideanPlane. ∀a,b:Point.  ((X |ab| ∈ {p:Point| O_X_p}  (a b ∈ Point))
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1
1. EuclideanPlane@i'
2. Point@i
3. Point@i
4. |ab| ∈ {p:Point| O_X_p} @i
⊢ b ∈ Point


Latex:


Latex:
\mforall{}e:EuclideanPlane.  \mforall{}a,b:Point.    ((X  =  |ab|)  {}\mRightarrow{}  (a  =  b))


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Latex:
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