Step * 1 of Lemma eu-ab-eq-x


1. EuclideanPlane@i'
2. Point@i
3. Point@i
4. b ∈ Point@i
⊢ |ab| ∈ {p:Point| O_X_p} 
BY
Assert ⌜|aa| |ab| ∈ {p:Point| O_X_p} ⌝⋅ }

1
.....assertion..... 
1. EuclideanPlane@i'
2. Point@i
3. Point@i
4. b ∈ Point@i
⊢ |aa| |ab| ∈ {p:Point| O_X_p} 

2
1. EuclideanPlane@i'
2. Point@i
3. Point@i
4. b ∈ Point@i
5. |aa| |ab| ∈ {p:Point| O_X_p} 
⊢ |ab| ∈ {p:Point| O_X_p} 


Latex:


Latex:

1.  e  :  EuclideanPlane@i'
2.  a  :  Point@i
3.  b  :  Point@i
4.  a  =  b@i
\mvdash{}  X  =  |ab|


By


Latex:
Assert  \mkleeneopen{}|aa|  =  |ab|\mkleeneclose{}\mcdot{}




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