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Step * of Lemma assert-deq-fset-member

∀[T:Type]. ∀[eq:EqDecider(T)]. ∀[a:T]. ∀[s:fset(T)].  uiff(↑a ∈b s;a ∈ s)
BY
{ ((UnivCD THENA Auto) THEN (Unfold `fset-member` 0 THEN Fold `deq-fset-member` 0) THEN Auto) }

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Latex:

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Latex:
\mforall{}[T:Type].  \mforall{}[eq:EqDecider(T)].  \mforall{}[a:T].  \mforall{}[s:fset(T)].    uiff(\muparrow{}a  \mmember{}\msubb{}  s;a  \mmember{}  s)


By

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Latex:
((UnivCD  THENA  Auto)  THEN  (Unfold  `fset-member`  0  THEN  Fold  `deq-fset-member`  0)  THEN  Auto)

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