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Step * of Lemma i-witness-property

∀I:Interval. ∀r:ℝ. ∀p:r ∈ I.  (r ∈ i-approx(I;i-witness(I;r;p)))
BY
{ (Unfold `i-witness` 0 THEN Auto THEN GenConclAtAddr [1;2;1] THEN D -2 THEN Reduce 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}I:Interval.  \mforall{}r:\mBbbR{}.  \mforall{}p:r  \mmember{}  I.    (r  \mmember{}  i-approx(I;i-witness(I;r;p)))


By

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Latex:
(Unfold  `i-witness`  0  THEN  Auto  THEN  GenConclAtAddr  [1;2;1]  THEN  D  -2  THEN  Reduce  0  THEN  Auto)

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