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Step * of Lemma i-nonvoid_wf

∀[I:Interval]. (i-nonvoid(I) ∈ ℙ)
BY
{ (Unfold `i-nonvoid` 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[I:Interval].  (i-nonvoid(I)  \mmember{}  \mBbbP{})


By

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Latex:
(Unfold  `i-nonvoid`  0  THEN  Auto)

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