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Step * of Lemma functor_arrow_wf

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∀[C,D:SmallCategory]. ∀[F:Functor(C;D)]. ∀[x,y:cat-ob(C)]. ∀[f:cat-arrow(C) x y].  (F(f) ∈ cat-arrow(D) (F x) (F y))
BY
{ ProveWfLemma }

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Latex:

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Latex:
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\mforall{}[C,D:SmallCategory].  \mforall{}[F:Functor(C;D)].  \mforall{}[x,y:cat-ob(C)].  \mforall{}[f:cat-arrow(C)  x  y].
    (F(f)  \mmember{}  cat-arrow(D)  (F  x)  (F  y))


By

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Latex:
ProveWfLemma

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