Results 61 to 70 of about 244 (170)

© Hindawi Publishing Corp. A NOTE ON THE SPECTRA OF TRIDIAGONAL MATRICES

, 2003
Using orthogonal polynomials, we give a different approach to some recent results on tridiagonal matrices. 2000 Mathematics Subject Classification: 15A18. 1. Introduction and preliminaries.
J. Petronilho, C. M. Da Fonseca
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Extreme Eigenvalues Of Real Symmetric Toeplitz Matrices

, 2000
We exploit the even and odd spectrum of real symmetric Toeplitz matrices for the computation of their extreme eigenvalues, which are obtained as the solutions of spectral, or secular, equations.
A. Melman, A Melman
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Sensitivity Analysis of All Eigenvalues of a Symmetric Matrix

, 1995
A(x). Based on Ky Fan's variational formulation of fm and some chain rule from nonsmooth analysis, we derive an explicit formula for the generalized gradient of fm and a computationally useful formula for the directional derivative of fm .
D. Ye, J. -b. Hiriart-urruty
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Convergence analysis of non-matching finite elements for a linear monotone additive Schwarz scheme for semi-linear elliptic problems

Nonlinear Engineering
In this article, we are interested in the standard finite element approximation method of linear additive Schwarz iterations for a class of semi-linear elliptic problems, for two subdomains, in the context of non-matching grids.
Al Farei Qais, Boulbrachene Messaoud
doaj   +1 more source

COMPUTING INTERIOR EIGENVALUES OF NONLINEAR HERMITEAN EIGENVALUE PROBLEMS

, 2008
restart AMS subject classification. 65F15, 15A18, 35P30, 49R50, 65N25 Abstract. A nonlinear eigenvalue problem T(λ)x = 0, the eigenvalues of which satisfy a minmax characterization shares many valuable properties of linear Hermitean eigenvalue problems ...
Vera Lochmann, Heinrich Voss, Marta M. Betcke   +2 more
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Diagonalisasi matriks atas ring dengan metode pemfaktoran secara lengkap

Generally, discussion about diagonalization of matrices in linear algebra is a matrix over the field. This research presents the diagonalization of matrices over commutative rings.
Sutopo Sutopo, Ari Suparwanto, Nikita Nikita   +2 more
core   +1 more source

On The Spectra Of Sums Of Orthogonal Projections With Applications To Parallel Computing

, 1991
. Many parallel iterative algorithms for solving symmetric, positive definite problems proceed by solving in each iteration, a number of independent systems on subspaces.
Petter E. Bj��rstad, Jan Mandel, Petter E. Bjørstad   +2 more
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Absolute And Relative Perturbation Bounds For Invariant Subspaces Of Matrices

, 1998
. Absolute and relative perturbation bounds are derived for angles between invariant subspaces of complex square matrices, in the two-norm and in the Frobenius norm.
Ilse C. F. Ipsen
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Properties of absolute-∗-k-paranormal operators and contractions for ∗-A(k) operators

, 2019
First, we see if T is absolute-∗-k-paranormal for k ≥ 1, then T is a normaloid operator. We also see some properties of absolute-∗-k-paranormal operator and ∗-A(k) operator.
BRAHA, Naim L., HOXHA, Ilmi, TATO, Agron
core   +1 more source

Operator trigonometry of multivariate finance

We inquire into an operator-trigonometric analysis of certain multi-asset financial pricing models. Our goal is to provide a new geometric point of view for the understanding and analysis of such financial instruments.
Gustafson, Karl
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