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Step * of Lemma cubical-fst_wf

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∀[X:j⊢]. ∀[A:{X ⊢ _}]. ∀[B:{X.A ⊢ _}]. ∀[p:{X ⊢ _:Σ A B}].  (p.1 ∈ {X ⊢ _:A})
BY
{ PresheafMLTTInstance Obid: presheaf-fst_wf⋅ }

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Latex:

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Latex:
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\mforall{}[X:j\mvdash{}].  \mforall{}[A:\{X  \mvdash{}  \_\}].  \mforall{}[B:\{X.A  \mvdash{}  \_\}].  \mforall{}[p:\{X  \mvdash{}  \_:\mSigma{}  A  B\}].    (p.1  \mmember{}  \{X  \mvdash{}  \_:A\})


By

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Latex:
PresheafMLTTInstance  Obid:  presheaf-fst\_wf\mcdot{}

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