Step
*
1
of Lemma
Euclid-prop13
.....assertion.....
1. g : EuclideanPlane
2. a : Point
3. b : Point
4. c : Point
5. d : Point
6. c-b-d
7. a # cd
⊢ a ≠ b
BY
{ (Assert ⌜a # bd⌝⋅ THEN Auto) }
Latex:
Latex:
.....assertion.....
1. g : EuclideanPlane
2. a : Point
3. b : Point
4. c : Point
5. d : Point
6. c-b-d
7. a \# cd
\mvdash{} a \mneq{} b
By
Latex:
(Assert \mkleeneopen{}a \# bd\mkleeneclose{}\mcdot{} THEN Auto)
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