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Step * 1 of Lemma ratreal-negative


1. r1 : ℤ
2. r2 : ℕ+
⊢ (r(r1)/r(r2)) < r0 ⇐⇒ r1 < 0
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1
1. r1 : ℤ
2. r2 : ℕ+
3. (r(r1)/r(r2)) < r0
⊢ r1 < 0

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Latex:

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Latex:

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


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Latex:
Auto

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