Step
*
of Lemma
geo-intersect-unique
∀eu:EuclideanParPlane. ∀l,m:Line. ∀x,y:Point. (l \/ m
⇒ (x I l ∧ x I m)
⇒ (y I l ∧ y I m)
⇒ x ≡ y)
BY
{ Auto }
1
1. eu : EuclideanParPlane@i'
2. l : Line@i
3. m : Line@i
4. x : Point@i
5. y : Point@i
6. l \/ m
7. x I l
8. x I m
9. y I l
10. y I m
⊢ x ≡ y
Latex:
Latex:
\mforall{}eu:EuclideanParPlane. \mforall{}l,m:Line. \mforall{}x,y:Point.
(l \mbackslash{}/ m {}\mRightarrow{} (x I l \mwedge{} x I m) {}\mRightarrow{} (y I l \mwedge{} y I m) {}\mRightarrow{} x \mequiv{} y)
By
Latex:
Auto
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