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Doubly invariant subspaces of the Besicovitch space

Sasane, Amol (2022) Doubly invariant subspaces of the Besicovitch space. Methods of Functional Analysis and Topology,, 28 (2). 150 - 156. ISSN 1029-3531

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Identification Number: 10.31392/MFAT-npu26_2.2022.07


A classical result of Norbert Wiener characterises doubly shift-invariant subspaces for square integrable functions on the unit circle with respect to a finite positive Borel measure μ, as being the ranges of the multiplication maps corresponding to the characteristic functions of μ-measurable subsets of the unit circle. An analogue of this result is given for the Besicovitch Hilbert space of `square integrable almost periodic functions'.

Item Type: Article
Official URL:
Additional Information: © 2022 The Author
Divisions: Mathematics
Subjects: Q Science > QA Mathematics
Date Deposited: 25 Mar 2022 10:27
Last Modified: 16 May 2024 03:40

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