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Step * of Lemma null-formal-sum_wf

∀[K:RngSig]. ∀[S:Type]. ∀[fs:basic-formal-sum(K;S)].  (null-formal-sum(K;S;fs) ∈ ℙ)
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[K:RngSig].  \mforall{}[S:Type].  \mforall{}[fs:basic-formal-sum(K;S)].    (null-formal-sum(K;S;fs)  \mmember{}  \mBbbP{})


By

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Latex:
ProveWfLemma

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