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Step * of Lemma bfs-predicate_wf

∀[K:RngSig]. ∀[S:Type]. ∀[P:(|K| × S) ⟶ ℙ]. ∀[b:basic-formal-sum(K;S)].  (bfs-predicate(K;S;p.P[p];b) ∈ ℙ)
BY
{ (Unfold `basic-formal-sum` 0 THEN ProveWfLemma) }

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Latex:

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Latex:
\mforall{}[K:RngSig].  \mforall{}[S:Type].  \mforall{}[P:(|K|  \mtimes{}  S)  {}\mrightarrow{}  \mBbbP{}].  \mforall{}[b:basic-formal-sum(K;S)].
    (bfs-predicate(K;S;p.P[p];b)  \mmember{}  \mBbbP{})


By

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Latex:
(Unfold  `basic-formal-sum`  0  THEN  ProveWfLemma)

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