Step * of Lemma eu-congruent-trivial

e:EuclideanPlane. ∀[a,b:Point].  aa=bb
BY
(Auto THEN EuContradiction THEN Assert ⌜¬(a b ∈ Point)⌝⋅}

1
.....assertion..... 
1. EuclideanPlane
2. Point
3. Point
4. ¬aa=bb
⊢ ¬(a b ∈ Point)

2
1. EuclideanPlane
2. Point
3. Point
4. ¬aa=bb
5. ¬(a b ∈ Point)
⊢ False


Latex:


Latex:
\mforall{}e:EuclideanPlane.  \mforall{}[a,b:Point].    aa=bb


By


Latex:
(Auto  THEN  EuContradiction  THEN  Assert  \mkleeneopen{}\mneg{}(a  =  b)\mkleeneclose{}\mcdot{})




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