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Step * 1 1 1 1 of Lemma geo-zero-le


1. e : BasicGeometry
2. v : {p:Point| O_X_p} 
3. X ∈ Length
⊢ X = X ∈ Length
BY
{ (Fold `geo-zero-length` 0 THEN Auto) }

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Latex:

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Latex:

1.  e  :  BasicGeometry
2.  v  :  \{p:Point|  O\_X\_p\} 
3.  X  \mmember{}  Length
\mvdash{}  X  =  X


By

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Latex:
(Fold  `geo-zero-length`  0  THEN  Auto)

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