Circle embeddings with restrictions on Fourier coefficients
Circle embeddings with restrictions on Fourier coefficients
复制标题
傅立叶系数限制的圆嵌入
DOI:
10.1016/j.jmaa.2020.124083
复制
发表时间:
2020
影响因子:
1.3
通讯作者:
Kovalev, Leonid V.
中科院分区:
文献类型:
--
作者:
Li, Liulan;Kovalev, Leonid V.
This paper continues the investigation of the relation between the geometry of a circle embedding and the values of its Fourier coefficients. First, we answer a question of Kovalev and Yang concerning the support of the Fourier transform of a starlike embedding. An important special case of circle embeddings are homeomorphisms of the circle onto itself. Under a one-sided bound on the Fourier support, such homeomorphisms are rational functions related to Blaschke products. We study the structure of rational circle homeomorphisms and show that they form a connected set in the uniform topology.
DOI:
--
发表时间:
1982
期刊:
影响因子:
--
作者:
R. R. Hall
通讯作者:
R. R. Hall
影响因子:
2.1
作者:
Kovalev, Leonid V.;Yang, Xuerui
通讯作者:
Yang, Xuerui