We study the truncated matrix trigonometric problem of moments. A parametrization of all solutions of this problem (both in the nondegenerate and degenerate cases) is obtained by using the operator approach. This parametrization establishes the one-to-one correspondence between a certain class of analytic functions and all solutions of the problem. We use the important Chumakin results on the generalized resolvents of isometric operators.
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Translated from Ukrains’kyi Matematychnyi Zhurnal, Vol. 63, No. 6, pp. 786–797, June, 2011.
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Zagorodnyuk, S.M. Truncated matrix trigonometric problem of moments: operator approach. Ukr Math J 63, 914–926 (2011). https://doi.org/10.1007/s11253-011-0552-6
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DOI: https://doi.org/10.1007/s11253-011-0552-6