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Step * of Lemma cube-set-restriction-id

∀[X:CubicalSet]. ∀[I:Cname List]. ∀[s:X(I)].  (1(s) = s ∈ X(I))
BY
{ (Auto
   THEN (Assert X ∈ CubicalSet BY
               Trivial)
   THEN RepeatFor 2 (D 1)
   THEN RepUR ``cube-set-restriction`` 0
   THEN All Reduce
   THEN Auto
   THEN RWO "4" 0
   THEN Auto) }

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Latex:

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Latex:
\mforall{}[X:CubicalSet].  \mforall{}[I:Cname  List].  \mforall{}[s:X(I)].    (1(s)  =  s)


By

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Latex:
(Auto
  THEN  (Assert  X  \mmember{}  CubicalSet  BY
                          Trivial)
  THEN  RepeatFor  2  (D  1)
  THEN  RepUR  ``cube-set-restriction``  0
  THEN  All  Reduce
  THEN  Auto
  THEN  RWO  "4"  0
  THEN  Auto)

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