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Step * of Lemma face-term-and-implies1

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∀[Gamma:j⊢]. ∀[phi,psi:{Gamma ⊢ _:𝔽}].  Gamma ⊢ ((phi ∧ psi) ⇒ phi)
BY
{ (Auto THEN (D 0 THEN Auto) THEN RepUR ``face-and cubical-term-at`` -1 THEN Fold `cubical-term-at` (-1)) }

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Latex:

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Latex:
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\mforall{}[Gamma:j\mvdash{}].  \mforall{}[phi,psi:\{Gamma  \mvdash{}  \_:\mBbbF{}\}].    Gamma  \mvdash{}  ((phi  \mwedge{}  psi)  {}\mRightarrow{}  phi)


By

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Latex:
(Auto
  THEN  (D  0  THEN  Auto)
  THEN  RepUR  ``face-and  cubical-term-at``  -1
  THEN  Fold  `cubical-term-at`  (-1))

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