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Step * of Lemma return-class_wf

∀[Info,A:Type]. ∀[x:A].  (return-class(x) ∈ EClass(A))
BY
{ (Unfold `eclass` 0 THEN ProveWfLemma) }

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Latex:

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Latex:
\mforall{}[Info,A:Type].  \mforall{}[x:A].    (return-class(x)  \mmember{}  EClass(A))


By

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Latex:
(Unfold  `eclass`  0  THEN  ProveWfLemma)

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