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Step * of Lemma nc-s_wf

∀[I,J:fset(ℕ)].  s ∈ I ⟶ J supposing J ⊆ I
BY
{ (Unfold `names-hom` 0 THEN ProveWfLemma) }

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Latex:

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Latex:
\mforall{}[I,J:fset(\mBbbN{})].    s  \mmember{}  I  {}\mrightarrow{}  J  supposing  J  \msubseteq{}  I


By

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Latex:
(Unfold  `names-hom`  0  THEN  ProveWfLemma)

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