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Step * of Lemma fset-image_wf

∀[T,A:Type]. ∀[eqt:EqDecider(T)]. ∀[eqa:EqDecider(A)]. ∀[f:T ⟶ A]. ∀[s:fset(T)].  (f"(s) ∈ fset(A))
BY
{ (Unfold `fset-image` 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[T,A:Type].  \mforall{}[eqt:EqDecider(T)].  \mforall{}[eqa:EqDecider(A)].  \mforall{}[f:T  {}\mrightarrow{}  A].  \mforall{}[s:fset(T)].    (f"(s)  \mmember{}  fset(A))


By

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

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