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Characterization, Dilation, and Perturbation of Basic Continuous Frames

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  • Xin Zhao
  • Pengtong Li
  • Firdous A. Shah

Abstract

A vector-valued function is called a basic continuous frame if it is a continuous frame for its spanning space. It is shown in this article that basic continuous frames and their oblique duals can be characterized by operators with closed ranges. Furthermore, we show that any oblique dual pair of basic continuous frames for a Hilbert space can be dilated to a Type II dual pair for a larger Hilbert space. Finally, a perturbation result for basic continuous frames is given. Since the spanning spaces of two basic continuous frames for a Hilbert space are often different, the research process is more complex than the setting of general continuous frames.

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  • Xin Zhao & Pengtong Li & Firdous A. Shah, 2022. "Characterization, Dilation, and Perturbation of Basic Continuous Frames," Journal of Mathematics, Hindawi, vol. 2022, pages 1-10, March.
    • Handle: RePEc:hin:jjmath:3270281
    DOI: 10.1155/2022/3270281
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