Ecuaciones lineales y anillos conmutativos.
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J. J. Aparicio Pedreño (2002)
Extracta Mathematicae
A.J. Crisalli (1975)
Journal für die reine und angewandte Mathematik
Wladyslaw Magiera, Urszula Libal, Agnieszka Wielgus (2018)
Kybernetika
This paper is devoted to analysis of block multi-indexed higher-order covariance matrices, which can be used for the least-squares estimation problem. The formulation of linear and nonlinear least squares estimation problems is proposed, showing that their statements and solutions lead to generalized `normal equations', employing covariance matrices of the underlying processes. Then, we provide a class of efficient algorithms to estimate higher-order statistics (generalized multi-indexed covariance...
Imran Rashid, Martin Gavalec, Sergeĭ Sergeev (2012)
Kybernetika
Eigenvectors of a fuzzy matrix correspond to stable states of a complex discrete-events system, characterized by a given transition matrix and fuzzy state vectors. Description of the eigenspace (set of all eigenvectors) for matrices in max-min or max-drast fuzzy algebra was presented in previous papers. In this paper the eigenspace of a three-dimensional fuzzy matrix in max-Łukasiewicz algebra is investigated. Necessary and sufficient conditions are shown under which the eigenspace restricted to...
Goldsheid, Ilya Ya., Khoruzhenko, Boris A. (2000)
Electronic Journal of Probability [electronic only]
Carolyn A. Eschenbach, Frank J. Hall, Zhongshan Li (2000)
Czechoslovak Mathematical Journal
In this paper, the eigenvalue distribution of complex matrices with certain ray patterns is investigated. Cyclically real ray patterns and ray patterns that are signature similar to real sign patterns are characterized, and their eigenvalue distribution is discussed. Among other results, the following classes of ray patterns are characterized: ray patterns that require eigenvalues along a fixed line in the complex plane, ray patterns that require eigenvalues symmetric about a fixed line, and ray...
L. Pastur (1996)
Annales de l'I.H.P. Physique théorique
Leonid Pastur (1991/1992)
Séminaire Bourbaki
Flaut, Cristina (2002)
Analele Ştiinţifice ale Universităţii “Ovidius" Constanţa. Seria: Matematică
S. Kouachi (2008)
Applicationes Mathematicae
We give explicit expressions for the eigenvalues and eigenvectors of some tridiagonal matrices with non-constant diagonal entries. Our techniques are based on the theory of recurrent sequences.
Kouachi, Said (2006)
ELA. The Electronic Journal of Linear Algebra [electronic only]
Johansson, Kurt, Nordenstam, Eric (2006)
Electronic Journal of Probability [electronic only]
Evans, Steven N. (2002)
Electronic Journal of Probability [electronic only]
Yueh, Wen-Chyuan (2005)
Applied Mathematics E-Notes [electronic only]
Foth, Philip (2010)
ELA. The Electronic Journal of Linear Algebra [electronic only]
König, Wolfgang, O'Connell, Neil (2001)
Electronic Communications in Probability [electronic only]
B.N. Parlett, W.-D. Wu (1984)
Numerische Mathematik
Miroslav Fiedler (1975)
Czechoslovak Mathematical Journal
Adolf Rhodius (1977)
Commentationes Mathematicae Universitatis Carolinae
Thomas Bier (1993)
Mathematische Annalen
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