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Step * of Lemma append-finite-nat-seq_wf

∀[f,g:finite-nat-seq()].  (f**g ∈ finite-nat-seq())
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[f,g:finite-nat-seq()].    (f**g  \mmember{}  finite-nat-seq())


By

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Latex:
ProveWfLemma

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