On the Beurling-Lax theorem for domains with one hole.
Carlsson, M. (2011)
The New York Journal of Mathematics [electronic only]
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Carlsson, M. (2011)
The New York Journal of Mathematics [electronic only]
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Trnovská, M. (2010)
Acta Mathematica Universitatis Comenianae. New Series
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Ito, Masatoshi, Seo, Yuki, Yamazaki, Takeaki, Yanagida, Masahiro (2009)
Banach Journal of Mathematical Analysis [electronic only]
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Halici, Serpil, Batu, Tuna (2009)
Acta Universitatis Apulensis. Mathematics - Informatics
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Heinz Toparkus (2014)
Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica
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In this paper we consider first-order systems with constant coefficients for two real-valued functions of two real variables. This is both a problem in itself, as well as an alternative view of the classical linear partial differential equations of second order with constant coefficients. The classification of the systems is done using elementary methods of linear algebra. Each type presents its special canonical form in the associated characteristic coordinate system. Then you can formulate...
Milutin R. Dostanić (2010)
Publications de l'Institut Mathématique
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Grega Cigler, Marjan Jerman (2014)
Special Matrices
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Let A be an invertible 3 × 3 complex matrix. It is shown that there is a 3 × 3 permutation matrix P such that the product PA has at least two distinct eigenvalues. The nilpotent complex n × n matrices A for which the products PA with all symmetric matrices P have a single spectrum are determined. It is shown that for a n × n complex matrix [...] there exists a permutation matrix P such that the product PA has at least two distinct eigenvalues.
Böttcher, Albrecht, Brunner, Hermann, Iserles, Arieh, Nørsett, Syvert P. (2010)
The New York Journal of Mathematics [electronic only]
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Krupka, Demeter (2002)
Beiträge zur Algebra und Geometrie
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Maohua Le (1995)
Colloquium Mathematicae
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Boumaza, Hakim, Stolz, Günter (2007)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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Regniers, Gilles, Van der Jeugt, Joris (2009)
SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]
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