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Step * of Lemma reg-seq-add_wf

∀[x,y:ℕ+ ⟶ ℤ].  (reg-seq-add(x;y) ∈ ℕ+ ⟶ ℤ)
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[x,y:\mBbbN{}\msupplus{}  {}\mrightarrow{}  \mBbbZ{}].    (reg-seq-add(x;y)  \mmember{}  \mBbbN{}\msupplus{}  {}\mrightarrow{}  \mBbbZ{})


By

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Latex:
ProveWfLemma

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