Results 21 to 30 of about 500,170 (139)

A Formula for Eigenvalues of Jacobi Matrices with a Reflection Symmetry

open access: yesAdvances in Mathematical Physics, 2018
The spectral properties of two special classes of Jacobi operators are studied. For the first class represented by the 2M-dimensional real Jacobi matrices whose entries are symmetric with respect to the secondary diagonal, a new polynomial identity ...
S. B. Rutkevich
doaj   +1 more source

Localization of Discrete Time Quantum Walks on the Glued Trees

open access: yesEntropy, 2014
In this paper, we consider the time averaged distribution of discrete time quantum walks on the glued trees. In order to analyze the walks on the glued trees, we consider a reduction to the walks on path graphs.
Yusuke Ide   +3 more
doaj   +1 more source

Asymptotic behaviour and approximation of eigenvalues for unbounded block Jacobi matrices [PDF]

open access: yesOpuscula Mathematica, 2010
The research included in the paper concerns a class of symmetric block Jacobi matrices. The problem of the approximation of eigenvalues for a class of a self-adjoint unbounded operators is considered.
Maria Malejki
doaj   +1 more source

A high accurate scheme for numerical simulation of two-dimensional mass transfer processes in food engineering

open access: yesAlexandria Engineering Journal, 2021
This paper contributes to develop a highly accurate numerical method for solving two-dimensional mass transfer equations during convective air drying of apple slices.
Yin Yang   +4 more
doaj   +1 more source

Condicionamiento y alta precisión en problemas espectrales estructurados [PDF]

open access: yes, 2007
Esta memoria trata dos aspectos relacionados con la precisión de algoritmos espectrales para problemas matriciales estructurados: 1) Se definen números de condición estructurados de autovalores múltiples, eventualmente defectivos, y se obtienen fórmulas ...
Peláez Montalvo, María José
core   +1 more source

On large-scale diagonalization techniques for the Anderson model of localization [PDF]

open access: yes, 2006
We propose efficient preconditioning algorithms for an eigenvalue problem arising in quantum physics, namely the computation of a few interior eigenvalues and their associated eigenvectors for large-scale sparse real and symmetric indefinite matrices of ...
Bollhofer, Matthias   +8 more
core   +1 more source

On the Fourier expansions of Jacobi forms

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2004
We use the relationship between Jacobi forms and vector-valued modular forms to study the Fourier expansions of Jacobi forms of indexes p, p2, and pq for distinct odd primes p, q.
Howard Skogman
doaj   +1 more source

On bounded complex Jacobi matrices and related moment problems in the complex plane [PDF]

open access: yesSurveys in Mathematics and its Applications, 2023
In this paper we consider the following moment problem: find a positive Borel measure μ on ℂ subject to conditions ∫ zn dμ = sn, n∈ℤ+, where sn are prescribed complex numbers (moments).
Sergey M. Zagorodnyuk
doaj  

Mutual Adaptation and Influence: Review of Latent Dynamics Models in Human–Robot Interaction

open access: yesAdvanced Robotics Research, EarlyView.
Robots are becoming better teammates by learning hidden patterns in how people act. This review covers how state‐of‐the‐art approaches leverage these patterns to help robots not only react but also anticipate and guide cooperation. Here, we synthesize a unifying framework for these approaches, classify and review existing works, and highlight key ...
Mason O. Smith   +4 more
wiley   +1 more source

Performance Comparison of GPU-Based Jacobi Solvers Using CUDA Provided Synchronization Methods

open access: yesIEEE Access, 2020
In this manuscript, variants of Jacobi solver implementation on general purpose graphical processing units (GPGPU) have been purposed and compared. During this work, parallel implementation of finite element method (FEM) using Poisson's equation on ...
Maria Aslam   +3 more
doaj   +1 more source

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