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Step * of Lemma es-interface-at_wf

∀[Info,T:Type]. ∀[X:EClass(T)]. ∀[i:Id].  (X@i ∈ EClass(T))
BY
{ (Unfold `eclass` 0 THEN ProveWfLemma) }

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Latex:

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Latex:
\mforall{}[Info,T:Type].  \mforall{}[X:EClass(T)].  \mforall{}[i:Id].    (X@i  \mmember{}  EClass(T))


By

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Latex:
(Unfold  `eclass`  0  THEN  ProveWfLemma)

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