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arXiv 1701.01889math.FA
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正交展开下里斯变换向量的无偏$L^p$估计

Dimension-free $L^p$ estimates for vectors of Riesz transforms associated with orthogonal expansions

Błażej Wróbel

摘要:

利用显式Bellman函数证明了积空间上一般多维正交展开算子的双线性嵌入定理。然后,这是适用于获得适当的矢量里斯变换,特别是在雅可比多项式的情况下,$L^p,$ $1<p<\infty,$有界性。我们估计的$L^p$范数的这些里斯变换都是无量纲的和线性的$\max(p,p/(p-1)).$的方法,我们提出,使我们能够避免使用的微分形式和一般的谱乘数。

英文摘要:

An explicit Bellman function is used to prove a bilinear embedding theorem for operators associated with general multi-dimensional orthogonal expansions on product spaces. This is then applied to obtain $L^p,$ $1<p<\infty,$ boundedness of appropriate vectorial Riesz transforms, in particular in the case of Jacobi polynomials. Our estimates for the $L^p$ norms of these Riesz transforms are both dimension-free and linear in $\max(p,p/(p-1)).$ The approach we present allows us to avoid the use of both differential forms and general spectral multipliers.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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