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arXiv 1102.1217math.CAmath.FA
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与Bessel算子相关的Hardy空间的实变量特征

Real-Variable Characterizations Of Hardy Spaces Associated With Bessel Operators

Dachun Yang, Dongyong Yang

摘要:

令$λ>0$、$p\in((2\lz+1)/(2\lz+2), 1]$和$\triangle_λ\equiv-\frac{d^2}{dx^2}-\frac{2λ}{x} \frac d{dx}$为贝塞尔算子。利用径向极大函数、非切极大函数、巨极大函数、Littlewood-Paley $g$ -函数和Lusin-面积函数建立了与$\triangle_λ$相联系的原子Hardy空间$H^p((0, \infty), dm_λ)$的特征,其中$dm_λ(x)\equiv x^{2λ}\,dx$ .作为应用,进一步得到了这些Hardy空间的里斯变换特征.

英文摘要:

Let $λ>0$, $p\in((2\lz+1)/(2\lz+2), 1]$, and $\triangle_λ\equiv-\frac{d^2}{dx^2}-\frac{2λ}{x} \frac d{dx}$ be the Bessel operator. In this paper, the authors establish the characterizations of atomic Hardy spaces $H^p((0, \infty), dm_λ)$ associated with $\triangle_λ$ in terms of the radial maximal function, the nontangential maximal function, the grand maximal function, the Littlewood-Paley $g$-function and the Lusin-area function, where $dm_λ(x)\equiv x^{2λ}\,dx$. As an application, the authors further obtain the Riesz transform characterization of these Hardy spaces.

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