Step
*
of Lemma
projective-plane-structure_wf
ProjectivePlaneStructure ∈ 𝕌'
BY
{ (Unfold `projective-plane-structure` 0 THEN RecordWf THEN Auto) }
Latex:
Latex:
ProjectivePlaneStructure  \mmember{}  \mBbbU{}'
By
Latex:
(Unfold  `projective-plane-structure`  0  THEN  RecordWf  THEN  Auto)
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