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Step * of Lemma eclass-compose1_wf

∀[Info,A,B:Type]. ∀[f:bag(A) ─→ bag(B)]. ∀[X:EClass(A)].  (f o X ∈ EClass(B))
BY
{ (Unfold `eclass` 0 THEN ProveWfLemma) }

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Latex:


\mforall{}[Info,A,B:Type].  \mforall{}[f:bag(A)  {}\mrightarrow{}  bag(B)].  \mforall{}[X:EClass(A)].    (f  o  X  \mmember{}  EClass(B))


By

(Unfold  `eclass`  0  THEN  ProveWfLemma)

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