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Step * of Lemma rset-member_wf

∀[A:Set(ℝ)]. ∀[x:ℝ].  (x ∈ A ∈ ℙ)
BY
{ (Unfolds ``rset rset-member`` 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[A:Set(\mBbbR{})].  \mforall{}[x:\mBbbR{}].    (x  \mmember{}  A  \mmember{}  \mBbbP{})


By

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Latex:
(Unfolds  ``rset  rset-member``  0  THEN  Auto)

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