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Step * of Lemma is-return-class

∀[Info:Type]. ∀[x:Top]. ∀[es:EO+(Info)]. ∀[e:E].  (e ∈b return-class(x) ~ first(e))
BY
{ (RepUR ``in-eclass return-class`` 0 THEN Auto THEN AutoSplit) }

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Latex:

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Latex:
\mforall{}[Info:Type].  \mforall{}[x:Top].  \mforall{}[es:EO+(Info)].  \mforall{}[e:E].    (e  \mmember{}\msubb{}  return-class(x)  \msim{}  first(e))


By

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Latex:
(RepUR  ``in-eclass  return-class``  0  THEN  Auto  THEN  AutoSplit)

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