Results 281 to 290 of about 47,396,763 (332)

Conservative Fourier spectral method and numerical investigation of space fractional Klein-Gordon-Schrödinger equations

Applied Mathematics and Computation, 2019
In this paper, we propose Fourier spectral method to solve space fractional Klein–Gordon–Schrodinger equations with periodic boundary condition.
Jun-Jie Wang, Ai-Guo Xiao
semanticscholar   +1 more source

Scaling on the Spectral Gradient Method

Journal of Optimization Theory and Applications, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Fahimeh Biglari, Maghsud Solimanpur
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A Space-Time Petrov-Galerkin Spectral Method for Time Fractional Diffusion Equation

Numerical Mathematics: Theory, Methods and Applications, 2018
. We develop in this paper a space-time Petrov-Galerkin spectral method for linear and nonlinear time fractional diffusion equations (TFDEs) involving either a Ca-puto or Riemann-Liouville derivative.
Chan Shen
semanticscholar   +1 more source

The Schwarz Algorithm for Spectral Methods

SIAM Journal on Numerical Analysis, 1988
This paper is concerned with a domain decomposition method for the Laplace equation in a square with Dirichlet boundary conditions. The method consists in a combination of the classical Schwarz alternating method with spectral methods and more precisely a Legendre-Galerkin or collocation method. Error estimates yielding geometric convergence are proven
C. CANUTO, FUNARO, Daniele
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Idempotent filtering in spectral and spectral element methods

Journal of Computational Physics, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kanevsky, Alex, Carpenter, Mark H., Hesthaven, Jan S.   +2 more
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Spectral simplex method

Mathematical Programming, 2015
This paper considers the problems of maximization and minimization of the spectral radius for nonnegative matrices with independent row uncertainties. The author proves necessary theoretical results on on-row corrections of nonnegative matrices. The spectral simplex methods for maximizing and minimizing the spectral radius are proposed.
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Spectral–Spatial Feature Tokenization Transformer for Hyperspectral Image Classification

IEEE Transactions on Geoscience and Remote Sensing, 2022
In hyperspectral image (HSI) classification, each pixel sample is assigned to a land-cover category. In the recent past, convolutional neural network (CNN)-based HSI classification methods have greatly improved performance due to their superior ability ...
Le Sun, Guang-Rui Zhao, Yu-Hui Zheng, Ze-Bin Wu   +3 more
semanticscholar   +1 more source

A spectral method for bonds

Computers & Operations Research, 2008
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Preconditioned Spectral Gradient Method

Numerical Algorithms, 2002
Modifications of the spectral gradient method are presented, which globalize the method and present strategies to apply preconditioning techniques. The condition of uniform positive definiteness of the preconditioning matrices is replaced with mild conditions on the search directions.
Francisco Luengo, Marcos Raydan, William Kile Glunt, Tom L. Hayden   +3 more
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Spectral Methods

Abstract In this chapter we give a brief introduction to the numerical integration of nonlinear waves using spectral methods. By no means do we intend for this chapter to be comprehensive; rather, it is designed to give you a flavor of what is at the core of spectral methods.
R. Carretero-González, D.J. Frantzeskakis, P.G. Kevrekidis   +2 more
  +4 more sources