Step 
*
 of Lemma 
mfun-class_wf
∀[X:Type]. ∀[dx:metric(X)]. ∀[Y:Type]. ∀[dy:metric(Y)].  (mfun-class(X;dx;Y;dy) ∈ Type)
BY
 
{ ProveWfLemma }
 
Latex: 
Latex:
\mforall{}[X:Type].  \mforall{}[dx:metric(X)].  \mforall{}[Y:Type].  \mforall{}[dy:metric(Y)].    (mfun-class(X;dx;Y;dy)  \mmember{}  Type)
 By 
Latex:
ProveWfLemma
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