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Step * 1 of Lemma qabs-qle-zero


1. r : ℚ
2. 0 ≤ |r|
3. |r| ≤ 0
⊢ r = 0 ∈ ℚ
BY
{ (BLemma `qabs-zero` THEN Auto) }

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Latex:

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Latex:

1.  r  :  \mBbbQ{}
2.  0  \mleq{}  |r|
3.  |r|  \mleq{}  0
\mvdash{}  r  =  0


By

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Latex:
(BLemma  `qabs-zero`  THEN  Auto)

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