Step 
*
 of Lemma 
homeomorphic+_wf
∀[X,Y:Type]. ∀[dX:metric(X)]. ∀[dY:metric(Y)].  (homeomorphic+(X;dX;Y;dY) ∈ ℙ)
BY
 
{ ProveWfLemma }
 
Latex: 
Latex:
\mforall{}[X,Y:Type].  \mforall{}[dX:metric(X)].  \mforall{}[dY:metric(Y)].    (homeomorphic+(X;dX;Y;dY)  \mmember{}  \mBbbP{})
 By 
Latex:
ProveWfLemma
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