Results 31 to 40 of about 408,199 (314)

Investigation of the spectrum for the Sturm-Liouville problem with one integral boundary condition

open access: yesNonlinear Analysis, 2010
In this paper, the Sturm–Liouville problem with one classical first type boundary condition and other nonlocal integral boundary conditions of two cases is investigated.
A. Skučaitė   +3 more
doaj   +1 more source

Investigation of the Sturm–Liouville problems with integral boundary condition

open access: yesLietuvos Matematikos Rinkinys, 2011
This paper presents some new results on the spectrum of a complex plane for the second order Finite-Difference Scheme with one integral type nonlocal boundary condition (NBC).
Agnė Skučaitė, Artūras Štikonas
doaj   +1 more source

Homology graph of real arrangements and monodromy of Milnor Fiber [PDF]

open access: yes, 2017
We study the first homology group of the Milnor fiber of sharp arrangements in the real projective plane. Our work relies on the minimal Salvetti complex of the deconing arrangement and its boundary map.
Bailet, Pauline, Settepanella, Simona
core   +2 more sources

On real eigenvalues of complex matrices [PDF]

open access: yesPacific Journal of Mathematics, 1965
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

Investigation of the spectrum for Sturm–Liouville problems with a nonlocal boundary condition

open access: yesLietuvos Matematikos Rinkinys, 2013
In this paper, we analyze the Sturm–Liouville problem with one classical first type boundary condition and the other Samarskii–Bitsadze type nonlocal boundary condition.
Kristina Skučaitė-Bingelė   +1 more
doaj   +1 more source

Eigenvalue Ratio Detection Based on Exact Moments of Smallest and Largest Eigenvalues [PDF]

open access: yes, 2011
Detection based on eigenvalues of received signal covariance matrix is currently one of the most effective solution for spectrum sensing problem in cognitive radios.
Alouini, Mohamed-Slim   +4 more
core   +1 more source

Eigenvibrations of a beam with two mechanical resonators attached to the ends [PDF]

open access: yesMATEC Web of Conferences, 2020
The fourth-order ordinary differential spectral problem describing vertical eigenvibrations of a beam with two mechanical resonators attached to the ends is studied. This problem has positive simple eigenvalues and corresponding eigenfunctions. We define
Koronova L. N.   +3 more
doaj   +1 more source

Quantized open chaotic systems [PDF]

open access: yes, 2010
Two different "wave chaotic" systems, involving complex eigenvalues or resonances, can be analyzed using common semiclassical methods. In particular, one obtains fractal Weyl upper bounds for the density of resonances/eigenvalues near the real axis, and ...
Nonnenmacher, Stéphane
core   +3 more sources

Gap probabilities in non-Hermitian random matrix theory [PDF]

open access: yes, 2009
We compute the gap probability that a circle of radius r around the origin contains exactly k complex eigenvalues. Four different ensembles of random matrices are considered: the Ginibre ensembles and their chiral complex counterparts, with both complex
Abramowitz M.   +6 more
core   +2 more sources

Bounds on eigenvalues of perturbed Lamé operators with complex potentials

open access: yesMathematics in Engineering, 2022
Several recent papers have focused their attention in proving the correct analogue to the Lieb-Thirring inequalities for non self-adjoint operators and in finding bounds on the distribution of their eigenvalues in the complex plane.
Lucrezia Cossetti
doaj   +1 more source

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