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Step * of Lemma is-half-interval_wf

∀[I,J:ℚInterval].  (is-half-interval(I;J) ∈ 𝔹)
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[I,J:\mBbbQ{}Interval].    (is-half-interval(I;J)  \mmember{}  \mBbbB{})


By

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Latex:
ProveWfLemma

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