Results 151 to 160 of about 6,302 (292)

Perturbation of an eigenvalue from a dense point spectrum: a general Floquet Hamiltonian

, 1997
Pierre Duclos, P. Šťovı́ček, Michel Vittot   +2 more
openalex   +2 more sources

A note on switching eigenvalues under small perturbations [PDF]

, 2023
Marina Masioti, Connie S.N. Li Wai Suen, Luke A. Prendergast, Amanda Shaker   +3 more
openalex   +1 more source

The Mild Behavioral Impairment Checklist for Parkinson's Disease: An Ancillary Instrument in Cognitive Assessment

Movement Disorders Clinical Practice, EarlyView.
Abstract Background Mild behavioral impairment (MBI) is a syndrome characterized by the later‐life onset of neuropsychiatric symptoms (NPS) and serves as a potential marker for dementia. In Parkinson's disease (PD), MBI has been associated with worse cognition, cortical atrophy, and altered connectivity.
Gabriel D. Pinilla‐Monsalve, Yuan P. Song, Alexandru Hanganu, Zahinoor Ismail, Oury Monchi   +4 more
wiley   +1 more source

Refined Perturbation Bounds for Eigenvalues of Hermitian and Non-Hermitian Matrices [PDF]

, 2009
Ilse C. F. Ipsen, Boaz Nadler
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

Diffusive Resource–Consumer Dynamics With the Simplest Learning Mechanism and Nonlocal Memory Usage

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT To describe cognitive consumers' movement, we study a diffusive resource–consumer model with nonlocal memory usage described by a system of parabolic equations, which is coupled with spatial memory dynamics described by a linear learning equation.
Qigang Deng, Ranchao Wu, Hao Wang
wiley   +1 more source

Some inner product techniques for computing eigenvalues for three-dimensional anharmonic oscillators with quartic and sextic perturbations

, 1995
M.R.M. Witwit
openalex   +1 more source

Ellipsoid‐Based Interval‐Type Uncertainty Model Updating Based on Riemannian Manifold and Gaussian Process Model

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Modern engineering systems require advanced uncertainty‐aware model updating methods that address parameter correlations beyond conventional interval analysis. This paper proposes a novel framework integrating Riemannian manifold theory with Gaussian Process Regression (GPR) for systems governed by Symmetric Positive‐Definite (SPD) matrix ...
Yanhe Tao, Qintao Guo, Jin Zhou, Cheng Yi   +3 more
wiley   +1 more source

Optimal perturbation bounds for the Hermitian eigenvalue problem

, 2000
Jesse L. Barlow, Ivan Slapničar
openalex   +1 more source

ASYMPTOTIC PERTURBATION OF PALINDROMIC EIGENVALUE PROBLEMS [PDF]

, 2010
Tie-Xiang Li, Eric King-wah Chu, Chern-Shuh Wang   +2 more
openalex   +1 more source