Results 121 to 130 of about 134,115 (317)

Perturbation expansions for eigenvalues and eigenvectors for a rectangular membrane subject to a restorative force [PDF]

, 1997
Joyce R. McLaughlin, Arturo Portnoy
openalex   +1 more source

Existence of the eigenvalues of a tensor sum of the Friedrichs models with rank 2 perturbation [PDF]

, 2023
Tulkin H. Rasulov, Bekzod I. Bahronov
openalex   +1 more source

Graph-theoretical approach to the eigenvalue spectrum of perturbed higher-order exceptional points

Physical Review Research
Exceptional points are special degeneracy points in parameter space that can arise in (effective) non-Hermitian Hamiltonians describing open quantum and wave systems.
Daniel Grom, Julius Kullig, Malte Röntgen, Jan Wiersig   +3 more
doaj   +1 more source

Eigenvalue Problems for Fredholm Operators with Set-Valued Perturbations

, 2020
Pierluigi Benevieri, Antonio Iannizzotto
openalex   +1 more source

Isoperimetric inequalities on slabs with applications to cubes and Gaussian slabs

Communications on Pure and Applied Mathematics, EarlyView.
Abstract We study isoperimetric inequalities on “slabs”, namely weighted Riemannian manifolds obtained as the product of the uniform measure on a finite length interval with a codimension‐one base. As our two main applications, we consider the case when the base is the flat torus R2/2Z2$\mathbb {R}^2 / 2 \mathbb {Z}^2$ and the standard Gaussian measure
Emanuel Milman
wiley   +1 more source

Subcritical perturbations of resonant linear problems with sign-changing potential

Electronic Journal of Differential Equations, 2005
We establish existence and multiplicity theorems for a Dirichlet boundary-value problem at resonance. This problem is a nonlinear subcritical perturbation of a linear eigenvalue problem studied by Cuesta, and includes a sign-changing potential. We obtain
Teodora-Liliana Dinu
doaj  

Linear and Two‐Dimensional Infrared Spectroscopy of the Multifunctional Vibrational Probe, 3‐(4‐Azidophenyl) Propiolonitrile. Deperturbing a Fermi Triad by Isotopic Substitution

ChemPhysChem, Volume 26, Issue 6, March 15, 2025.
Linear infrared spectroscopy combined with isotope labeling and density functional theory unravels the origin of a Fermi triad in a multifunctional vibrational chromophore. Ultrafast 2DIR‐spectroscopy reports directly on the dynamics and the intramolecular vibrational energy flow pathways in the isotopically deperturbed system. Abstract Infrared probes
Claudia Gräve, Jörg Lindner, Stefan Flesch, Luis I. Domenianni, Peter Vöhringer   +4 more
wiley   +1 more source

Perturbation behavior of a multiple eigenvalue in generalized Hermitian eigenvalue problems [PDF]

, 2010
Yuji Nakatsukasa
openalex   +1 more source

Precipitation and tree biomass correlate with the diversity and functional composition of tropical rainforest cricket assemblages across climate and disturbance gradients

Ecography, EarlyView.
Disturbance‐driven changes in rainforest structure and environmental conditions can alter ecosystem functioning, yet the consequences for invertebrate communities – key contributors to decomposition, herbivory, and trophic interactions – are not fully understood, particularly in relation to structural changes in vegetation.
Charlotte E. Raven, Andy G. Howe, David C. F. Rentz, Emma J. Mackintosh, Andrew R. Marshall, Helen F. Nahrung   +5 more
wiley   +1 more source

Homotopy perturbation technique for improving solutions of large quadratic eigenvalue problems: Application to friction-induced vibration

, 2020
Jérémy Sadet, Franck Massa, Thierry Tison, Isabelle Turpin, Bertrand Lallemand, El‐Ghazali Talbi   +5 more
openalex   +2 more sources