Step
*
1
of Lemma
rleq-int-fractions2
1. a : ℤ
2. b : ℤ
3. d : ℕ+
4. r(a) ≤ (r(b)/r(d))
⊢ (a * d) ≤ b
BY
{ (nRMul ⌜r(d)⌝ (-1)⋅ THEN Auto)⋅ }
1
1. a : ℤ
2. b : ℤ
3. d : ℕ+
4. r(a * d) ≤ r(b)
⊢ (a * d) ≤ b
Latex:
Latex:
1. a : \mBbbZ{}
2. b : \mBbbZ{}
3. d : \mBbbN{}\msupplus{}
4. r(a) \mleq{} (r(b)/r(d))
\mvdash{} (a * d) \mleq{} b
By
Latex:
(nRMul \mkleeneopen{}r(d)\mkleeneclose{} (-1)\mcdot{} THEN Auto)\mcdot{}
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