Step * of Lemma geo-add-length-cancel-left-lt2

e:BasicGeometry. ∀y,z:Length.  (z < ⇐⇒ 0 < y)
BY
Auto }

1
1. BasicGeometry
2. Length
3. Length
4. z < y
⊢ 0 < y

2
1. BasicGeometry
2. Length
3. Length
4. 0 < y
⊢ z < y


Latex:


Latex:
\mforall{}e:BasicGeometry.  \mforall{}y,z:Length.    (z  <  z  +  y  \mLeftarrow{}{}\mRightarrow{}  0  <  y)


By


Latex:
Auto




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