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Step * of Lemma select_upto

∀[m:ℕ]. ∀[n:ℕm].  (upto(m)[n] = n ∈ ℤ)
BY
{ (Auto THEN Unfold `upto` 0 THEN RWO "select-from-upto" 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[m:\mBbbN{}].  \mforall{}[n:\mBbbN{}m].    (upto(m)[n]  =  n)


By

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Latex:
(Auto  THEN  Unfold  `upto`  0  THEN  RWO  "select-from-upto"  0  THEN  Auto)

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