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Step * of Lemma ss-mem-open_wf

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∀[X:SeparationSpace]. ∀[O:Open(X)]. ∀[x:Point(X)].  (x ∈ O ∈ ℙ)
BY
{ ProveWfLemma }

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Latex:

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Latex:
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\mforall{}[X:SeparationSpace].  \mforall{}[O:Open(X)].  \mforall{}[x:Point(X)].    (x  \mmember{}  O  \mmember{}  \mBbbP{})


By

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Latex:
ProveWfLemma

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