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Step * of Lemma fl-s-fl1

∀[I:fset(ℕ)]. ∀[x:names(I)].  (((x=1))<s> = (x=1) ∈ Point(face_lattice(I+x)))
BY
{ (((Auto THEN RWO "fl-morph-fl1" 0) THENA Auto) THEN RepUR ``nc-s`` 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[I:fset(\mBbbN{})].  \mforall{}[x:names(I)].    (((x=1))<s>  =  (x=1))


By

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Latex:
(((Auto  THEN  RWO  "fl-morph-fl1"  0)  THENA  Auto)  THEN  RepUR  ``nc-s``  0  THEN  Auto)

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