Step * 1 of Lemma eu-be-compress


1. EuclideanPlane@i'
2. Point@i
3. Point@i
4. Point@i
5. a_b_c@i
6. a_c_b@i
⊢ c ∈ Point
BY
(InstLemma `eu-between-eq-exchange3` [⌜e⌝;⌜a⌝;⌜b⌝;⌜c⌝;⌜b⌝]⋅ THENA Auto) }

1
1. EuclideanPlane@i'
2. Point@i
3. Point@i
4. Point@i
5. a_b_c@i
6. a_c_b@i
7. b_c_b
⊢ c ∈ Point


Latex:


Latex:

1.  e  :  EuclideanPlane@i'
2.  a  :  Point@i
3.  b  :  Point@i
4.  c  :  Point@i
5.  a\_b\_c@i
6.  a\_c\_b@i
\mvdash{}  b  =  c


By


Latex:
(InstLemma  `eu-between-eq-exchange3`  [\mkleeneopen{}e\mkleeneclose{};\mkleeneopen{}a\mkleeneclose{};\mkleeneopen{}b\mkleeneclose{};\mkleeneopen{}c\mkleeneclose{};\mkleeneopen{}b\mkleeneclose{}]\mcdot{}  THENA  Auto)




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