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The Kaczmarz Algorithm in Hilbert C*-modules

delete2025-12-01
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D
Daniel Alpay *
C
Chad Berner
E
Eric Weber
DOI:10.1016/j.exmath.2025.125738delete
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Abstract

Abstract

En 中文
The Kaczmarz algorithm in Hilbert spaces is a classical iterative method for stably recovering vectors from inner product data. In this paper, we extend the algorithm to the setting of Hilbert C*-modules and establish analogues of its effectiveness in both finite-dimensional and stationary cases. Consequently, we demonstrate that continuous families of elements in a Hilbert space can be uniformly recovered using the Kaczmarz algorithm. Additionally, we develop a normalized Cauchy transform for continuous families of measures and use it to provide sufficient conditions under which standard frames in Hilbert C(X)-modules can be generated by the Kaczmarz algorithm and realized as orbits of bounded operators. (c) 2025 The Author(s). Published by Elsevier GmbH. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Keywords:
Kaczmarz algorithm
Hilbert C* modules
Orbits of bounded operators
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Journal

E
Expositiones Mathematicae
IF:
0.9
Papers:
43
Citations:
0

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Chapman University
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chapman university system
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University of Missouri System cover
University of Missouri System
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