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Step * of Lemma near-log-exists

∀a:{a:ℝ| r0 < a} . ∀N:ℕ+.  ∃m:ℕ+. (∃z:ℤ [(|(r(z))/m - rlog(a)| ≤ (r1/r(N)))])
BY
{ Assert ⌜∀a:{a:ℝ| r1 ≤ a} . ∀N:ℕ+.  ∃m:ℕ+. (∃z:ℤ [(|(r(z))/m - rlog(a)| ≤ (r1/r(N)))])⌝⋅ }

1
.....assertion..... 
∀a:{a:ℝ| r1 ≤ a} . ∀N:ℕ+.  ∃m:ℕ+. (∃z:ℤ [(|(r(z))/m - rlog(a)| ≤ (r1/r(N)))])

2
1. ∀a:{a:ℝ| r1 ≤ a} . ∀N:ℕ+.  ∃m:ℕ+. (∃z:ℤ [(|(r(z))/m - rlog(a)| ≤ (r1/r(N)))])
⊢ ∀a:{a:ℝ| r0 < a} . ∀N:ℕ+.  ∃m:ℕ+. (∃z:ℤ [(|(r(z))/m - rlog(a)| ≤ (r1/r(N)))])

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Latex:

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Latex:
\mforall{}a:\{a:\mBbbR{}|  r0  <  a\}  .  \mforall{}N:\mBbbN{}\msupplus{}.    \mexists{}m:\mBbbN{}\msupplus{}.  (\mexists{}z:\mBbbZ{}  [(|(r(z))/m  -  rlog(a)|  \mleq{}  (r1/r(N)))])


By

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Latex:
Assert  \mkleeneopen{}\mforall{}a:\{a:\mBbbR{}|  r1  \mleq{}  a\}  .  \mforall{}N:\mBbbN{}\msupplus{}.    \mexists{}m:\mBbbN{}\msupplus{}.  (\mexists{}z:\mBbbZ{}  [(|(r(z))/m  -  rlog(a)|  \mleq{}  (r1/r(N)))])\mkleeneclose{}\mcdot{}

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