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Step * of Lemma compose_wf

∀[A,B,C:Type]. ∀[f:B ⟶ C]. ∀[g:A ⟶ B].  (f o g ∈ A ⟶ C)
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[A,B,C:Type].  \mforall{}[f:B  {}\mrightarrow{}  C].  \mforall{}[g:A  {}\mrightarrow{}  B].    (f  o  g  \mmember{}  A  {}\mrightarrow{}  C)


By

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Latex:
ProveWfLemma

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