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Step * of Lemma cube-set-restriction-when-id

∀[X:CubicalSet]. ∀[I:Cname List]. ∀[s:X(I)]. ∀[f:name-morph(I;I)].  f(s) = s ∈ X(I) supposing f = 1 ∈ name-morph(I;I)
BY
{ (Auto THEN HypSubst' (-1) 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[X:CubicalSet].  \mforall{}[I:Cname  List].  \mforall{}[s:X(I)].  \mforall{}[f:name-morph(I;I)].    f(s)  =  s  supposing  f  =  1


By

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Latex:
(Auto  THEN  HypSubst'  (-1)  0  THEN  Auto)

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