Generalized norms of matrices and the location of the spectrum
Miroslav Fiedler, Vlastimil Pták (1962)
Czechoslovak Mathematical Journal
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Miroslav Fiedler, Vlastimil Pták (1962)
Czechoslovak Mathematical Journal
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Jitka Segethová (1980)
Aplikace matematiky
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The matrix of the system of linear algebraic equations, arising in the application of the finite element method to one-dimensional problems, is a bandmatrix. In approximations of high order, the band is very wide but the elements situated far from the diagonal of the matrix are negligibly small as compared with the diagonal elements. The aim of the paper is to show on a model problem that in practice it is possible to work with a matrix of the system the bandwidth of which is reduced....
Dolores Barrios, Venancio Tomeo, Emilio Torrano (1994)
Extracta Mathematicae
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In this paper we consider a class of three-term recurrence relations, whose associated tridiagonal matrices are subnormal operators. In this cases, there are measures associated to the polynomials given by such relations. We study the support of these measures.
Joanna Kowynia (2005)
Control and Cybernetics
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