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Uchenye Zapiski Kazanskogo Universiteta. Seriya Fiziko-Matematicheskie Nauki, 2016, Volume 158, Book 4, Pages 511–529
(Mi uzku1383)
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Approximate factorization for one class of second-order matrix functions
S. N. Kiyasov Kazan Federal University, Kazan, 420008 Russia
Abstract:
Approximate factorization of Holder matrix function on a simple smooth closed contour has been defined. Components for one class of the $2\times2$ matrix function have been approximated by polynomials in $z$ and $1/z$. Sufficient conditions have been found for zero equality of the partial indices of the approximating matrix function. Factorization of the approximating matrix function has been constructed in an explicit form.
Keywords:
matrix function, factorization, approximate factorization.
Received: 11.10.2016
Citation:
S. N. Kiyasov, “Approximate factorization for one class of second-order matrix functions”, Uchenye Zapiski Kazanskogo Universiteta. Seriya Fiziko-Matematicheskie Nauki, 158, no. 4, Kazan University, Kazan, 2016, 511–529
Linking options:
https://www.mathnet.ru/eng/uzku1383 https://www.mathnet.ru/eng/uzku/v158/i4/p511
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