Abstract
Let A be a given n × n matrix. How to find out whether A is a (T + H)-matrix? If the answer is positive, then, perhaps, A is even a (T + H)-circulant? How then the circulant components of its (T + H)-decomposition can be found? Algorithmic answers are given to all these questions.
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Kh. D. Ikramov, V. N. Chugunov, and A. K. Abdikalykov, “On local conditions characterizing the set of (T + H)-matrices,” Dokl. Math. 90(1), 405–406 (2014).
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Kh. D. Ikramov and N. V. Savel’eva, “On certain quasidiagonalizable families of matrices,” Comput. Math. Math. Phys. 38(7), 1026–1035 (1998).
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Original Russian Text © Kh.D. Ikramov, V.N. Chugunov, 2015, published in Zhurnal Vychislitel’noi Matematiki i Matematicheskoi Fiziki, 2015, Vol. 55, No. 2, pp. 185–188.
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Ikramov, K.D., Chugunov, V.N. How to characterize (T + H)-matrices and (T + H)-circulants. Comput. Math. and Math. Phys. 55, 175–178 (2015). https://doi.org/10.1134/S0965542515020104
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DOI: https://doi.org/10.1134/S0965542515020104