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Step * of Lemma face-or-at

∀[r,s,I,rho:Top].  ((r ∨ s)(rho) ~ r(rho) ∨ s(rho))
BY
{ (RepUR ``cubical-term-at face-or`` 0 THEN Fold `cubical-term-at` 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[r,s,I,rho:Top].    ((r  \mvee{}  s)(rho)  \msim{}  r(rho)  \mvee{}  s(rho))


By

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Latex:
(RepUR  ``cubical-term-at  face-or``  0  THEN  Fold  `cubical-term-at`  0  THEN  Auto)

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