Step * 1 of Lemma symmetric-point-construction1


1. BasicGeometry
2. Point
3. {p:Point| p} 
⊢ ∃p':Point [p=a=p']
BY
(D -1 THEN (gProlong ⌜p⌝ ⌜a⌝ `x' ⌜a⌝ ⌜p⌝ ⋅ THENA Auto)) }

1
.....antecedent..... 
1. BasicGeometry
2. Point
3. Point
4. [%1] p
⊢ a

2
1. BasicGeometry
2. Point
3. Point
4. [%1] p
5. Point
6. B(pax) ∧ ax ≅ ap
⊢ ∃p':Point [p=a=p']


Latex:


Latex:

1.  e  :  BasicGeometry
2.  a  :  Point
3.  p  :  \{p:Point|  a  \#  p\} 
\mvdash{}  \mexists{}p':Point  [p=a=p']


By


Latex:
(D  -1  THEN  (gProlong  \mkleeneopen{}p\mkleeneclose{}  \mkleeneopen{}a\mkleeneclose{}  `x'  \mkleeneopen{}a\mkleeneclose{}  \mkleeneopen{}p\mkleeneclose{}  \mcdot{}  THENA  Auto))




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