Eigenvalues for Some Complex In nite Tridiagonal Matrices
Journal of Advances in Mathematics and Computer Science · pp. 1–9 · Published 3 Mar 2018
10.9734/JAMCS/2018/39654Abstract
The discrete spectrum for an unbounded operator J dened by a special innite tridiagonal complex matrix is approximated by the eigenvalues of its orthogonal truncations. Let σ(J) means the spectrum of the operator J and where Limn→∞λn is the set of limit points of the sequence (λn); and the n x n matrix Jn is an orthogonal truncation of J. We consider classes of tridiagonal complex matrices for which σ(J) = Λ(J).
Cited by 3
I N Braeutigam, Dmitry Mikhailovich Polyakov · Ufa Mathematical Journal · 2019
Gian Maria Dall’Ara, Duong Ngoc Son · Proceedings of the American Mathematical Society · 2022
A G Baskakov, G V Garkavenko, M Yu Glazkova · Journal of Physics: Conference Series · 2020
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