Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On genericity of non-uniform Dvoretzky coverings of the circle   The classical Dvoretzky covering problem asks for conditions on the sequence
of lengths $\{\ell_n\}_{n\in \mathbb{N}}$ so that the random intervals $I_n : =
(\omega_n -(\ell_n/2), \omega_n +(\ell_n/2))$ where $\omega_n$ is a sequence of
i.i.d. uniformly distributed random variable, covers any point on the circle
$\mathbb{T}$ infinitely often. We consider the case when $\omega_n$ are
absolutely continuous with a density function $f$. When
$m_f=essinf_\mathbb{T}f>0$ and the set $K_f$ of its essential infimum points
satisfies $\overline{\dim}_\mathrm{B} K_f<1$, where
$\overline{\dim}_\mathrm{B}$ is the upper box-counting dimension, we show that
the following condition is necessary and sufficient for $\mathbb{T}$ to be
$\mu_f$-Dvoretzky covered \[ \limsup_{n \rightarrow \infty} \left(\frac{\ell_1
+ \dots + \ell_n}{\ln n}\right)\geq \frac{1}{m_f}. \] Under more restrictive
assumptions on $\{\ell_n\}$ the above result is true if $\dim_H K_f<1$. We next
show that as long as $\{\ell_n\}_{n\in \mathbb{N}}$ and $f$ satisfy the above
condition and $|K_f|=0$, then a Menshov type result holds, i.e. Dvoretzky
covering can be achieved by changing $f$ on a set of arbitrarily small Lebesgue
measure. This, however, is not true for the uniform density.

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The categories of this paper are: physics
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-th
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-th
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The categories of this paper are: patt-sol
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The categories of this paper are: supr-con
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The categories of this paper are: nlin
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The categories of this paper are: astro-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: cs
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The categories of this paper are: econ
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The categories of this paper are: funct-an
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The categories of this paper are: cond-mat