论文标题

广义thue-morse三角多项式的多重分析

Multifractal Analysis of generalized Thue-Morse trigonometric polynomials

论文作者

Fan, Aihua, Schmeling, Jörg, Shen, Weixiao

论文摘要

We consider the generalized Thue-Morse sequences $(t_n^{(c)})_{n\ge 0}$ ($c \in [0,1)$ being a parameter) defined by $t_n^{(c)} = e^{2πi c s_2(n)}$, where $s_2(n)$ is the sum of digits of the binary expansion of $n$.对于多项式,$σ_{n}^{(c)}(x):= \ sum_ {n = 0}^{n-1} t_n^{(c)} e^{2πin x} $,我们在[18]中证明了统一的norm norm norm $ $ $ $ \ | = $ \ | f cundy ucry ucry ucry ust $ n^{γ(c)} $和最佳指数$γ(c)$是计算的。在本文中,我们研究了点的行为,并对极限$ \ lim_ {n \ to \ infty} n^{ - 1} \ log | = |σ_{2^n}^{(c)}(c)}(x)| $进行完整的多效分析。

We consider the generalized Thue-Morse sequences $(t_n^{(c)})_{n\ge 0}$ ($c \in [0,1)$ being a parameter) defined by $t_n^{(c)} = e^{2πi c s_2(n)}$, where $s_2(n)$ is the sum of digits of the binary expansion of $n$. For the polynomials $σ_{N}^{(c)} (x) := \sum_{n=0}^{N-1} t_n^{(c)} e^{2πi n x}$, we have proved in [18] that the uniform norm $\|σ_N^{(c)}\|_\infty$ behaves like $N^{γ(c)}$ and the best exponent $γ(c)$ is computed. In this paper, we study the pointwise behavior and give a complete multifractal analysis of the limit $\lim_{n\to\infty}n^{-1}\log |σ_{2^n}^{(c)}(x)|$.

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