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Step * of Lemma presheaf-fst-pair

No Annotations
∀[C:SmallCategory]. ∀[X:ps_context{j:l}(C)]. ∀[A:{X ⊢ _}]. ∀[u:{X ⊢ _:A}]. ∀[v:Top].
  (presheaf-pair(u;v).1 = u ∈ {X ⊢ _:A})
BY
{ (Auto THEN Symmetry THEN PresheafTermEqual THEN Auto) }

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Latex:

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Latex:
No  Annotations
\mforall{}[C:SmallCategory].  \mforall{}[X:ps\_context\{j:l\}(C)].  \mforall{}[A:\{X  \mvdash{}  \_\}].  \mforall{}[u:\{X  \mvdash{}  \_:A\}].  \mforall{}[v:Top].
    (presheaf-pair(u;v).1  =  u)


By

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Latex:
(Auto  THEN  Symmetry  THEN  PresheafTermEqual  THEN  Auto)

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