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arXiv 2210.04844math.FA
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算子的时频分析与共轨空间

Time-Frequency Analysis and Coorbit Spaces of Operators

Monika Dörfler, Franz Luef, Henry McNulty, Eirik Skrettingland

AI总结:

本文提出带算子窗的算子值短时傅里叶变换,建立算子共轨空间理论,完全分类生成等价范数的算子,并利用原子分解与局部化算子刻画相应空间。

摘要:

我们针对某些类别的算子引入了一种算子值短时傅里叶变换,并采用算子窗函数;结果表明,该变换的作用方式类似于函数的短时傅里叶变换,尤其会产生一族向量值再生核 Banach 空间,即所谓共轨空间,并将其作为算子空间。由于这一结构,在函数调制空间上生成等价范数的算子得到了完全分类。我们证明这些算子空间具有与函数空间相同的原子分解性质,并利用这一点通过局部化算子给出了这些空间的刻画。

英文摘要:

We introduce an operator valued Short-Time Fourier Transform for certain classes of operators with operator windows, and show that the transform acts in an analogous way to the Short-Time Fourier Transform for functions, in particular giving rise to a family of vector-valued reproducing kernel Banach spaces, the so called coorbit spaces, as spaces of operators. As a result of this structure the operators generating equivalent norms on the function modulation spaces are fully classified. We show that these operator spaces have the same atomic decomposition properties as the function spaces, and use this to give a characterisation of the spaces using localisation operators.

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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