Step * 1 1 2 1 1 of Lemma mk-complete-pgeo_wf

.....subterm..... T:t
2:n
1. pg ProjectivePlaneStructure
2. Point
⊢ λx.x ∈ p ≡ p
BY
(Unfold `pgeo-peq` THEN Unfold `not` THEN Auto) }

1
1. pg ProjectivePlaneStructure
2. Point
3. p ≠ p@i
⊢ x ∈ False


Latex:


Latex:
.....subterm.....  T:t
2:n
1.  pg  :  ProjectivePlaneStructure
2.  p  :  Point
\mvdash{}  \mlambda{}x.x  \mmember{}  p  \mequiv{}  p


By


Latex:
(Unfold  `pgeo-peq`  0  THEN  Unfold  `not`  0  THEN  Auto)




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