Step
*
of Lemma
product-map_wf
∀[A,B,C:Type]. ∀[F:A ⟶ B ⟶ C]. ∀[as:A List]. ∀[bs:B List].  (product-map(F;as;bs) ∈ C List)
BY
{ ProveWfLemma }
Latex:
Latex:
\mforall{}[A,B,C:Type].  \mforall{}[F:A  {}\mrightarrow{}  B  {}\mrightarrow{}  C].  \mforall{}[as:A  List].  \mforall{}[bs:B  List].    (product-map(F;as;bs)  \mmember{}  C  List)
By
Latex:
ProveWfLemma
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