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Step * of Lemma rat-interval-third_wf

∀[p:ℝ]. ∀[I:ℚInterval].  (rat-interval-third(p;I) ∈ ℙ)
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[p:\mBbbR{}].  \mforall{}[I:\mBbbQ{}Interval].    (rat-interval-third(p;I)  \mmember{}  \mBbbP{})


By

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Latex:
ProveWfLemma

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