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Step * of Lemma contr-center_wf

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∀[X:j⊢]. ∀[A:{X ⊢ _}]. ∀[c:{X ⊢ _:Contractible(A)}].  (contr-center(c) ∈ {X ⊢ _:A})
BY
{ (Auto THEN Unfold `contractible-type` -1 THEN ProveWfLemma) }

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Latex:

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Latex:
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\mforall{}[X:j\mvdash{}].  \mforall{}[A:\{X  \mvdash{}  \_\}].  \mforall{}[c:\{X  \mvdash{}  \_:Contractible(A)\}].    (contr-center(c)  \mmember{}  \{X  \mvdash{}  \_:A\})


By

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Latex:
(Auto  THEN  Unfold  `contractible-type`  -1  THEN  ProveWfLemma)

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