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    Article

    Phase retrieval from intensity difference of linear canonical transform

    The chirp-modulated shift-invariant space (CMSIS) is of interest in the linear canonical transform (LCT) based sampling theory. In this paper, we investigate the phase retrieval (PR) problem for the causal sig...

    Youfa Li, Guangde Wu, Yanfen Huang, Ganji Huang in Banach Journal of Mathematical Analysis (2023)

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    Article

    Nonuniform sampling and approximation in Sobolev space from perturbation of the framelet system

    The Sobolev space Hς (ℝd), where ς > d/2, is an important function space that has many applications in various areas of research. Attributed to the inertia of a measurement instrument, it is desirable in sampling...

    Youfa Li, Deguang Han, Shouzhi Yang, Ganji Huang in Science China Mathematics (2021)