Harmonic analysis associated with Laguerre polynomial expansions

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:Jorge J. Betancor(西班牙拉古纳大学)
:2023-02-13 16:50
:Zoom会议号: (1)16:50-17:30请登录会议号:880 6113 3940(密码:C9sn28) (2)17:30-18:10请登录会议号:879 4514 5198(密码:xr8Fn6)

报告人:Jorge J. Betancor(西班牙拉古纳大学)

时  间:2023213日下午16:50-18:10

地  点:Zoom会议号:

11650-1730请登录会议号:880 6113 3940(密码:C9sn28

21730-1810请登录会议号:879 4514 5198(密码:xr8Fn6

内容摘要:

In this talk we will discuss boundedness properties of harmonic analysis operators (Maximal operators defined by semigroups, Riesz transforms, Littlewood-Paley functions, multipliers and variation operators) associated with $\alpha$-Laguerre polynomial expansions. Firstly, we consider variable Lebesgue spaces $L^p(.)(0,\infty)^n, d\gamma_\alpha)$, where $d\gamma_\alpha(x)=\prod_{j=1}^n\frac{x_j^{\alpha_j} e^{-x_j}}{\Gamma(\alpha_j+1)}$ and $\alpha=(\alpha_1, \ldots, \alpha_n) \in(0, \infty)^n$. In the second part we study the Hardy space $H^1((0, \infty), \gamma_\alpha)$. This Hardy space is characterized by using local maximal functions. The dual of $H^1(0, \infty), \gamma_\alpha)$ is a BMO-type space. We discuss some endpoint estimates $(p=1$ and $p=\infty)$ for Laguerre harmonic analysis operators.

人简介:

Jorge J. Betancor教授,调和分析及逼近论专家,主要从事特殊函数及积分变换, 巴拿赫空间几何,和与Bessel 算子及Laguerre 算子相关的函数空间及应用的研究。 研究成果显著,发表学术论文200余篇,其研究工作先后发表在J. Funct. Anal.Israel J. Math., J. Approx. TheoryJ. Anal. Math.Indiana Univ. Math. J.J.Geom.Anal.等国际著名数学杂志上。

 

联系人:杨东勇