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Step * of Lemma poset-cat-dist_wf

∀[I:Cname List]. ∀[x,y:cat-ob(poset-cat(I))].  (poset-cat-dist(I;x;y) ∈ ℕ)
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[I:Cname  List].  \mforall{}[x,y:cat-ob(poset-cat(I))].    (poset-cat-dist(I;x;y)  \mmember{}  \mBbbN{})


By

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Latex:
ProveWfLemma

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