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Step * of Lemma fshift_wf

∀[n,k:ℕ]. ∀[f:ℕn ⟶ ℕk]. ∀[x:ℕk].  (fshift(f;x) ∈ ℕn + 1 ⟶ ℕk)
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[n,k:\mBbbN{}].  \mforall{}[f:\mBbbN{}n  {}\mrightarrow{}  \mBbbN{}k].  \mforall{}[x:\mBbbN{}k].    (fshift(f;x)  \mmember{}  \mBbbN{}n  +  1  {}\mrightarrow{}  \mBbbN{}k)


By

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Latex:
ProveWfLemma

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