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Step * of Lemma Accum-class_wf

∀[Info,B,A:Type]. ∀[f:A ─→ B ─→ B]. ∀[init:Id ─→ bag(B)]. ∀[X:EClass(A)].  (Accum-class(f;init;X) ∈ EClass(B))
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[Info,B,A:Type].  \mforall{}[f:A  {}\mrightarrow{}  B  {}\mrightarrow{}  B].  \mforall{}[init:Id  {}\mrightarrow{}  bag(B)].  \mforall{}[X:EClass(A)].
    (Accum-class(f;init;X)  \mmember{}  EClass(B))


By

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Latex:
ProveWfLemma

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