Step
*
of Lemma
member-closure_wf
∀[A:ℝ ⟶ ℙ]. ∀[y:ℝ].  (y ∈ closure(A) ∈ ℙ)
BY
{ (Unfold `member-closure` 0 THEN Auto) }
Latex:
Latex:
\mforall{}[A:\mBbbR{}  {}\mrightarrow{}  \mBbbP{}].  \mforall{}[y:\mBbbR{}].    (y  \mmember{}  closure(A)  \mmember{}  \mBbbP{})
By
Latex:
(Unfold  `member-closure`  0  THEN  Auto)
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