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Polynomial approach to cyclicity for weighted $$\ell ^p_A$$
Banach Journal of Mathematical Analysis ( IF 1.2 ) Pub Date : 2020-09-30 , DOI: 10.1007/s43037-020-00085-8
Daniel Seco , Roberto Téllez

In previous works, an approach to the study of cyclic functions in reproducing kernel Hilbert spaces has been presented, based on the study of so called \emph{optimal polynomial approximants}. In the present article, we extend such approach to the (non-Hilbert) case of spaces of analytic functions whose Taylor coefficients are in $\ell^p(\omega)$, for some weight $\omega$. When $\omega=\{(k+1)^\alpha\}_{k\in \mathbb{N}}$, for a fixed $\alpha \in \mathbb{R}$, we derive a characterization of the cyclicity of polynomial functions and, when $1

中文翻译:

加权 $$\ell ^p_A$$ 循环的多项式方法

在以前的工作中,基于对所谓的\emph{最优多项式逼近}的研究,提出了一种研究再现核希尔伯特空间中循环函数的方法。在本文中,我们将这种方法扩展到解析函数空间的(非希尔伯特)情况,其泰勒系数在 $\ell^p(\omega)$ 中,对于某些权重 $\omega$。当 $\omega=\{(k+1)^\alpha\}_{k\in \mathbb{N}}$ 时,对于固定的 $\alpha \in \mathbb{R}$,我们推导出一个表征多项式函数的循环性,当 $1
更新日期:2020-09-30
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