Zobrazeno 1 - 10
of 188
pro vyhledávání: '"complex eigenvalues"'
Publikováno v:
Vetor, Vol 34, Iss 1 (2024)
When using spectral nodal methods in the solution of fixed-source problems, one of the steps involves obtaining the intranodal homogeneous solution of the neutron transport equations in the discrete ordinates formulation (SN), where an eigenvalue pro
Externí odkaz:
https://doaj.org/article/914b24be45b549fcbd10f70ec471e21a
Publikováno v:
Discrete and Continuous Models and Applied Computational Science, Vol 30, Iss 2, Pp 139-148 (2022)
One of the possible versions of quantum mechanics, known as Kuryshkin-Wodkiewicz quantum mechanics, is considered. In this version, the quantum distribution function is positive, but, as a retribution for this, the von Neumann quantization rule is re
Externí odkaz:
https://doaj.org/article/95474607e9204f648bdfa0527ae95cc9
Akademický článek
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Publikováno v:
Algorithms, Vol 16, Iss 1, p 26 (2023)
A vibrating pylon, modeled as a waveguide, with an attached point mass that is time-varying poses a numerically challenging problem regarding the most efficient way for eigenvalue extraction. The reason is three-fold, starting with a heavy mass attac
Externí odkaz:
https://doaj.org/article/e01fe25371c0408f9715a64da65c3f83
Akademický článek
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Publikováno v:
Entropy, Vol 25, Iss 1, p 74 (2022)
Complex eigenvalues of random matrices J=GUE+iγdiag(1,0,…,0) provide the simplest model for studying resonances in wave scattering from a quantum chaotic system via a single open channel. It is known that in the limit of large matrix dimensions N
Externí odkaz:
https://doaj.org/article/8218c2e219eb44d9917b0ff5287cc4a7
Autor:
Elena D. Vinogradova, Paul D. Smith
Publikováno v:
Mathematics, Vol 10, Iss 15, p 2774 (2022)
A rigorous approach was employed for the accurate evaluation of the electromagnetic interaction between a thin metallic rod and a two-dimensional (2D) slotted cavity. The problem was posed as a classical boundary value problem for the Helmholtz equat
Externí odkaz:
https://doaj.org/article/25b64ffa48084c78bbd1da7f5efc88d5
Autor:
Evgeny Korotyaev, Ari Laptev
Publikováno v:
Bulletin of Mathematical Sciences, Vol 8, Iss 3, Pp 453-475 (2018)
Abstract We consider a class of Schrödinger operators with complex decaying potentials on the lattice. Using some classical results from complex analysis we obtain some trace formulae and use them to estimate zeros of the Fredholm determinant in ter
Externí odkaz:
https://doaj.org/article/5282a6d5d7854190a1f167de108cec02
Publikováno v:
Nonlinear Analysis, Vol 24, Iss 5 (2019)
This paper presents new results on the spectrum on complex plane for discrete Sturm–Liouville problem with one integral type nonlocal boundary condition depending on three parameters: γ, ξ1 and ξ2. The integral condition is approximated by the t
Externí odkaz:
https://doaj.org/article/8d71331239bb444c90f0f674fdfe7371