Step * of Lemma eu-exists-middle

e:EuclideanPlane. ∀a,b:Point. ∀c:{p:Point| ¬Colinear(a;b;p)} .  ∃m:Point. ((m middle(a;b;c) ∈ Point) ∧ am=bm ∧ am=cm)
BY
Auto
THEN }

1
1. EuclideanStructure@i'
2. [%1] euclidean-axioms(e)@i'
3. Point@i
4. Point@i
5. {p:Point| ¬Colinear(a;b;p)} @i
⊢ ∃m:Point. ((m middle(a;b;c) ∈ Point) ∧ am=bm ∧ am=cm)


Latex:


Latex:
\mforall{}e:EuclideanPlane.  \mforall{}a,b:Point.  \mforall{}c:\{p:Point|  \mneg{}Colinear(a;b;p)\}  .
    \mexists{}m:Point.  ((m  =  middle(a;b;c))  \mwedge{}  am=bm  \mwedge{}  am=cm)


By


Latex:
Auto
THEN  D  1




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