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Step * 1 1 1 of Lemma ratreal-negative


1. r1 : ℤ
2. r2 : ℕ+
3. r(r1) < r0
⊢ r1 < 0
BY
{ (RWO "rless-int" (-1) THEN Auto) }

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Latex:

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Latex:

1.  r1  :  \mBbbZ{}
2.  r2  :  \mBbbN{}\msupplus{}
3.  r(r1)  <  r0
\mvdash{}  r1  <  0


By

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Latex:
(RWO  "rless-int"  (-1)  THEN  Auto)

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