Step
*
of Lemma
prec-arg-types_wf
∀[P:Type]. ∀[a:Atom ⟶ P ⟶ ((P + P + Type) List)]. ∀[i:P]. ∀[lbl:Atom].
  (prec-arg-types(lbl,p.a[lbl;p];i;lbl) ∈ Type List)
BY
{ ProveWfLemma }
Latex:
Latex:
\mforall{}[P:Type].  \mforall{}[a:Atom  {}\mrightarrow{}  P  {}\mrightarrow{}  ((P  +  P  +  Type)  List)].  \mforall{}[i:P].  \mforall{}[lbl:Atom].
    (prec-arg-types(lbl,p.a[lbl;p];i;lbl)  \mmember{}  Type  List)
By
Latex:
ProveWfLemma
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