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Step * of Lemma rabs-abs

∀[a:ℤ]. (|r(a)| = r(|a|))
BY
{ (Auto THEN RWO  "rabs-int" 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[a:\mBbbZ{}].  (|r(a)|  =  r(|a|))


By

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Latex:
(Auto  THEN  RWO    "rabs-int"  0  THEN  Auto)

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