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Step * of Lemma fset-some_wf

∀[T:Type]. ∀[P:T ⟶ 𝔹]. ∀[s:fset(T)].  (fset-some(s;x.P[x]) ∈ ℙ)
BY
{ (Unfold `fset-some` 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[T:Type].  \mforall{}[P:T  {}\mrightarrow{}  \mBbbB{}].  \mforall{}[s:fset(T)].    (fset-some(s;x.P[x])  \mmember{}  \mBbbP{})


By

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Latex:
(Unfold  `fset-some`  0  THEN  Auto)

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