Step 
*
 of Lemma 
name-morph-domain_wf
∀[I,J:Cname List]. ∀[f:name-morph(I;J)].  (name-morph-domain(f;I) ∈ Type)
BY
 
{ ProveWfLemma }
 
Latex: 
Latex:
\mforall{}[I,J:Cname  List].  \mforall{}[f:name-morph(I;J)].    (name-morph-domain(f;I)  \mmember{}  Type)
 By 
Latex:
ProveWfLemma
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