Results 11 to 20 of about 12,638,036 (224)

Orthonormal Bernstein Galerkin technique for computations of higher order eigenvalue problems

open access: yesMethodsX, 2023
The numerical approximation of eigenvalues of higher even order boundary value problems has sparked a lot of interest in recent years. However, it is always difficult to deal with higher-order BVPs because of the presence of boundary conditions.
Humaira Farzana   +2 more
doaj   +1 more source

Resolving phase transitions with discontinuous Galerkin methods

open access: yesSciPost Physics Core, 2023
We demonstrate the applicability and advantages of Discontinuous Galerkin (DG) schemes in the context of the Functional Renormalization Group (fRG). We investigate the $O(N)$-model in the large $N$ limit.
Eduardo Grossi, Nicolas Wink
doaj   +1 more source

Extensions of the deep Galerkin method

open access: yesApplied Mathematics and Computation, 2022
We extend the Deep Galerkin Method (DGM) introduced in Sirignano and Spiliopoulos (2018)} to solve a number of partial differential equations (PDEs) that arise in the context of optimal stochastic control and mean field games. First, we consider PDEs where the function is constrained to be positive and integrate to unity, as is the case with Fokker ...
Ali Al-Aradi   +4 more
openaire   +3 more sources

Defect correction from a galerkin viewpoint [PDF]

open access: yes, 1985
We consider the numerical solution of systems of nonlinear two point boundary value problems by Galerkin's method. An initial solution is computed with piecewise linear approximating functions and this is then improved by using higher—order piecewise ...
Moore, G
core   +4 more sources

On Galerkin difference methods [PDF]

open access: yesJournal of Computational Physics, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jeffrey W. Banks, Thomas M. Hagstrom
openaire   +2 more sources

Penalty parameter and dual-wind discontinuous Galerkin approximation methods for elliptic second order PDEs

open access: yesElectronic Journal of Differential Equations, 2022
This article analyzes the effect of the penalty parameter used in  symmetric dual-wind discontinuous Galerkin (DWDG) methods for approximating second order elliptic partial differential equations (PDE).
Thomas Lewis, Aaron Rapp, Yi Zhang
doaj   +3 more sources

On the generalized wavelet-Galerkin method [PDF]

open access: yesJournal of Computational and Applied Mathematics, 2018
In the frame of the traditional wavelet-Galerkin method based on the compactly supported wavelets, it is important to calculate the so-called connection coefficients that are some integrals whose integrands involve products of wavelets, their derivatives as well as some known coefficients in considered differential equations.
Zhaochen Yang, Shijun Liao
openaire   +2 more sources

Piecewise Fractional Jacobi Polynomial Approximations for Volterra Integro-Differential Equations with Weakly Singular Kernels

open access: yesAxioms, 2022
This paper is concerned with numerical solutions to Volterra integro-differential equations with weakly singular kernels. Making use of the transformed fractional Jacobi polynomials, we develop a class of piecewise fractional Galerkin methods for solving
Haiyang Li, Junjie Ma
doaj   +1 more source

A domain decomposition method for solving the three-dimensional time-harmonic Maxwell equations discretized by discontinuous Galerkin methods [PDF]

open access: yes, 2008
We present here a domain decomposition method for solving the three-dimensional time-harmonic Maxwell equations discretized by a discontinuous Galerkin method.
Dolean Maini, Victorita   +2 more
core   +4 more sources

Stabilizer-free weak Galerkin methods for monotone quasilinear elliptic PDEs

open access: yesResults in Applied Mathematics, 2020
In this paper, we study the stabilizer-free weak Galerkin methods on polytopal meshes for a class of second order elliptic boundary value problems of divergence form and with gradient nonlinearity in the principal coefficient. With certain assumptions on
Xiu Ye, Shangyou Zhang, Yunrong Zhu
doaj   +1 more source

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