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Factorization of Matrices with Symmetries over Function Algebras

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Abstract

Factorizations of the Wiener–Hopf type of classes of matrix functions with various symmetries are studied, in the abstract context of Banach algebras of functions over connected abelian compact groups. The symmetries in question are induced by involutive automorphisms or antiautomorphisms of the general linear group, and include many symmetries studied previously in the literature. In the present paper the focus is on quasicanonical (i.e., with equal indices) and canonical factorizations.

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Correspondence to Ilya M. Spitkovsky.

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I. M. Spitkovsky was supported in part by the Summer Research Grant of the College of William and Mary and by Faculty Research funding from the Division of Science and Mathematics, New York University Abu Dhabi.

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Rodman, L., Spitkovsky, I.M. Factorization of Matrices with Symmetries over Function Algebras. Integr. Equ. Oper. Theory 80, 469–510 (2014). https://doi.org/10.1007/s00020-014-2155-8

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