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arXiv 1906.01151math.NT
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$M_0$ -集上的非齐次丢番图逼近

Inhomogeneous Diophantine Approximation on $M_0$-sets with restricted denominators

Andrew D. Pollington, Sanju Velani, Agamemnon Zafeiropoulos, Evgeniy Zorin

摘要:

设$F \subseteq [0,1]$是支持概率测度$μ$的集合,该概率测度$μ$具有如下性质:对于某个常数$ A > 0 $,$ |\widehatμ(t)| \ll (\log |t|)^{-A}$。设$\mathcal{A}= (q_n)_{n\in \mathbb{N}} $为自然数序列。如果$\mathcal{A}$是缺元的,而$A >2$是缺元的,我们建立了一个定量的非齐次Khintchine型定理,其中(i)兴趣点被限制在$F$上,(ii)“移位”有理数的算子被限制在$\mathcal{A}$上.该定理可以被看作是序列$(q_nx {\rm \ mod \, } 1)_{n\in \mathbb{N}} $对于$μ$几乎所有$x \in F$是均匀分布的事实的自然加强。除了缺,我们的主要定理意味着类似的定量结果序列$\mathcal{A}$的素因子被限制到一个有限的一组$k$素数和$A > 2k$。

英文摘要:

Let $F \subseteq [0,1]$ be a set that supports a probability measure $μ$ with the property that $ |\widehatμ(t)| \ll (\log |t|)^{-A}$ for some constant $ A > 0 $. Let $\mathcal{A}= (q_n)_{n\in \mathbb{N}} $ be a sequence of natural numbers. If $\mathcal{A}$ is lacunary and $A >2$, we establish a quantitative inhomogeneous Khintchine-type theorem in which (i) the points of interest are restricted to $F$ and (ii) the denominators of the `shifted' rationals are restricted to $\mathcal{A}$. The theorem can be viewed as a natural strengthening of the fact that the sequence $(q_nx {\rm \ mod \, } 1)_{n\in \mathbb{N}} $ is uniformly distributed for $μ$ almost all $x \in F$. Beyond lacunary, our main theorem implies the analogous quantitative result for sequences $\mathcal{A}$ for which the prime divisors are restricted to a finite set of $k$ primes and $A > 2k$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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