Results 51 to 60 of about 418,858 (273)

The spectral Galerkin method for the differential operator eigenvalue problems based on a least-squares form and its Schur complement type implementation methods

open access: yesResults in Applied Mathematics
The differential operator eigenvalue problems often arise in the field of physics and engineering, such as solid band structure, electron orbitals of atoms or molecules, and quantum bound states.
Jiaoxia Huang, Yonghui Qin
doaj   +1 more source

On the spectrum of a fourth order nonlinear eigenvalue problem with variable exponent and indefinite potential

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
The present paper deals with the spectrum of a fourth order nonlinear eigenvalue problem involving variable exponent conditions and a sign-changing potential.
Qing-Mei Zhou, Ke-Qi Wang
doaj   +1 more source

Nonlocal Conduction in a Metawire

open access: yesAdvanced Materials, Volume 37, Issue 13, April 2, 2025.
A 1D metawire composed of twisted copper wires is designed and realized. This metamaterial exhibits pronounced effects of nonlocal electric conduction according to Ohm's law. The current at one location not only depends on the electric field at that location but also on other locations.
Julio Andrés Iglesias Martínez   +3 more
wiley   +1 more source

A double-phase eigenvalue problem with large exponents

open access: yesOpen Mathematics, 2023
In the present article, we consider a double-phase eigenvalue problem with large exponents. Let λ(pn,qn)1{\lambda }_{\left({p}_{n},{q}_{n})}^{1} be the first eigenvalues and un{u}_{n} be the first eigenfunctions, normalized by ‖un‖ℋn=1\Vert {u}_{n}{\Vert
Yu Lujuan
doaj   +1 more source

Numerical Computation of Spectral Solutions for Sturm-Liouville Eigenvalue Problems

open access: yesInternational Journal of Analysis and Applications, 2023
This paper focuses on the study of Sturm-Liouville eigenvalue problems. In the classical Chebyshev collocation method, the Sturm-Liouville problem is discretized to a generalized eigenvalue problem where the functions represent interpolants in suitably ...
Sameh Gana
doaj   +1 more source

A spectral projection method for transmission eigenvalues

open access: yes, 2016
In this paper, we consider a nonlinear integral eigenvalue problem, which is a reformulation of the transmission eigenvalue problem arising in the inverse scattering theory.
Sun, Jiguang, Xu, Liwei, Zeng, Fang
core   +1 more source

A Shift Selection Strategy for Parallel Shift-invert Spectrum Slicing in Symmetric Self-consistent Eigenvalue Computation [PDF]

open access: yes, 2020
© 2020 ACM. The central importance of large-scale eigenvalue problems in scientific computation necessitates the development of massively parallel algorithms for their solution.
Beckman, PG, Williams-Young, DB, Yang, C
core   +1 more source

Photonics of Topological Magnetic Textures

open access: yesAdvanced Optical Materials, EarlyView.
Localized noncollinear magetic textures imprint their geometry and topology onto traversing photonic fields endowing them with orbital angular‐momentum, chirality, and magnetoelectric densities. Abstract Topological textures in magnetically ordered materials are an important case studies for fundamental research with promising applications in data ...
Vakhtang Jandieri   +6 more
wiley   +1 more source

Error investigation of finite element approximation for a nonlinear Sturm–Liouville problem

open access: yesУчёные записки Казанского университета: Серия Физико-математические науки, 2017
A positive definite differential eigenvalue problem with coefficients depending nonlinearly on the spectral parameter has been studied. The differential eigenvalue problem is formulated as a variational eigenvalue problem in a Hilbert space with bilinear
A.A. Samsonov   +2 more
doaj  

A Semismooth Newton Method for Tensor Eigenvalue Complementarity Problem

open access: yes, 2015
In this paper, we consider the tensor eigenvalue complementarity problem which is closely related to the optimality conditions for polynomial optimization, as well as a class of differential inclusions with nonconvex processes.
Chen, Zhongming, Qi, Liqun
core   +1 more source

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