Results 81 to 90 of about 1,655,330 (212)
On computing integer powers of tridiagonal matrix [PDF]
, 2010 Bu tezde belli bir tipteki üçlü bant ve anti pentadiagonal matrislerin kuvvetlerinin genel ifadesi elde edilmiştir. Üçlü bant matrisin kuvvetinin genel ifadesi dönüşüm formülü kullanılarak elde edilmiştir.
Kıyak, Hümeyra
core
Polynomial sequences generated by infinite Hessenberg matrices
Special Matrices, 2017 We show that an infinite lower Hessenberg matrix generates polynomial sequences that correspond to the rows of infinite lower triangular invertible matrices. Orthogonal polynomial sequences are obtained when the Hessenberg matrix is tridiagonal. We study
Verde-Star Luis
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Tridiagonal matrix representations of cyclic selfadjoint operators [PDF]
Pacific Journal of Mathematics, 1984 A bounded cyclic self-adjoint operator C defined on a separable Hilbert space H can be represented as a tridiagonal matrix with respect to the basis generated by a cyclic vector, in such a way that the subdiagonal matrix entries are positive. An operator J can then be defined so that \(CJ-JC=-2iK\) where K also has a tridiagonal matrix representation ...
openaire +7 more sources
The Upper Bound for GMRES on Normal Tridiagonal Toeplitz Linear System
Journal of Mathematical Extension, 2015 The Generalized Minimal Residual method (GMRES) is often used to solve a large and sparse system Ax = b. This paper establishes error bound for residuals of GMRES on solving an N × N normal tridiagonal Toeplitz linear system.
R. Doostaki∗, A. Hadian, S. Azizi
doaj
Matrix measures and random walks [PDF]
In this paper we study the connection between matrix measures and random walks with a tridiagonal block transition matrix. We derive sufficient conditions such that the blocks of the n-step transition matrix of the Markov chain can be represented as ...
Zygmunt, M. +3 more
core
Approximating Eigenvalues of a Class of Perturbed Tridiagonal Systems
MathematicsWe study a class of perturbed tridiagonal problems in the form of a rank-one update of a symmetric tridiagonal Toeplitz matrix. We derive computable formulas for up to eighth-order polynomial approximations or closed formulas for quartic approximation ...
Christos Chorianopoulos +1 more
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Sylvester-Tridiagonal Matrix With Alternating Main Diagonal Entries and Its Spectra
, 2013 Recently some generalizations of Sylvester type tridiagonal matrices have been considered with their spectra. We introduce a new kind generalization of Sylvester type tridiagonal matrix by considering its main diagonal entries.
Kılıç, Emrah
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Band gap engineering in finite elongated graphene nanoribbon heterojunctions: Tight-binding model
AIP Advances, 2015 A simple model based on the divide and conquer rule and tight-binding (TB) approximation is employed for studying the role of finite size effect on the electronic properties of elongated graphene nanoribbon (GNR) heterojunctions.
Benjamin O. Tayo
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Accurate polynomial root-finding methods for symmetric tridiagonal matrix eigenproblems [PDF]
, 2016 In this paper we consider the application of polynomial root-finding methods to the solution of the tridiagonal matrix eigenproblem. All considered solvers are based on evaluating the Newton correction.
GEMIGNANI, LUCA
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Journal of Applied Mathematics, 2007 The purpose of this paper is the construction of invariant regions in which we establish the global existence of solutions for reaction-diffusion systems (three equations) with a tridiagonal matrix of diffusion coefficients and with nonhomogeneous ...
Abdelmalek Salem
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