Step 
*
 of Lemma 
eclass0-bag_wf
∀[Info,B,C:Type]. ∀[X:EClass(B)]. ∀[f:Id ⟶ bag(B) ⟶ bag(C)].  (eclass0-bag(f;X) ∈ EClass(C))
BY
 
{ ProveWfLemma }
 
Latex: 
Latex:
\mforall{}[Info,B,C:Type].  \mforall{}[X:EClass(B)].  \mforall{}[f:Id  {}\mrightarrow{}  bag(B)  {}\mrightarrow{}  bag(C)].    (eclass0-bag(f;X)  \mmember{}  EClass(C))
 By 
Latex:
ProveWfLemma
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