Results 11 to 20 of about 1,675 (160)

Superconvergence of finite element method for parabolic problem [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2000
We study superconvergence of a semi-discrete finite element scheme for parabolic problem. Our new scheme is based on introducing different approximation of initial condition.
Do Y. Kwak, Sungyun Lee, Qian Li
doaj   +2 more sources

Strong Superconvergence of Finite Element Methods for Linear Parabolic Problems [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2009
We study the strong superconvergence of a semidiscrete finite element scheme for linear parabolic problems on 𝑄=Ω×(0,𝑇], where Ω is a bounded domain in ℛ𝑑(𝑑≤4) with piecewise smooth boundary. We establish the global two order superconvergence results for
Kening Wang, Shuang Li
doaj   +2 more sources

Superconvergence and error estimation of finite element solutions to fire-exposed frame problems [PDF]

open access: yes, 2000
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.When a fire reaches the point of flashover the hot gases inside the burning room ignite resulting in furnace-like conditions.
Kirby, James Alexander
core   +7 more sources

Exploiting Superconvergence Through Smoothness-Increasing Accuracy-Conserving (SIAC) Filtering [PDF]

open access: yes, 2015
There has been much work in the area of superconvergent error analysis for finite element and discontinuous Galerkin (DG) methods. The property of superconvergence leads to the question of how to exploit this information in a useful manner, mainly ...
Ryan, Jennifer
core   +6 more sources

Superconvergence of spectral collocation method for initial value problem of ordinary differential equations

open access: yes上海师范大学学报. 自然科学版, 2021
In this paper, we study the spectral collocation method for the initial value problems of ordinary differential equations. Based on Legendre-Gauss points, we propose the spectral collocation method for the initial value problems of first-order and second-
QIAN Yiyun   +5 more
doaj   +1 more source

Legendre Superconvergent Degenerate Kernel and Nystrom Methods for Fredholm Integral Equations [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2023
In this paper, polynomial-based superconvergent degenerate kernel and {Nyström} methods for solving {Fredholm} integral equations of the second kind with  the smooth kernel are studied.
Bouda Hamza   +2 more
doaj   +1 more source

Superconvergence Analysis of Discontinuous Galerkin Methods for Systems of Second-Order Boundary Value Problems

open access: yesComputation, 2023
In this paper, we present an innovative approach to solve a system of boundary value problems (BVPs), using the newly developed discontinuous Galerkin (DG) method, which eliminates the need for auxiliary variables.
Helmi Temimi
doaj   +1 more source

Convergence and Stability in Collocation Methods of Equation u′(t)=au(t)+bu([t])

open access: yesJournal of Applied Mathematics, 2012
This paper is concerned with the convergence, global superconvergence, local superconvergence, and stability of collocation methods for u′(t)=au(t)+bu([t]).
Han Yan   +3 more
doaj   +1 more source

Low order nonconforming finite element method for time-dependent nonlinear Schrödinger equation

open access: yesBoundary Value Problems, 2018
The main aim of this paper is to apply a low order nonconforming EQ1rot $\mathit{EQ}_{1}^{\mathrm{rot}}$ finite element to solve the nonlinear Schrödinger equation. Firstly, the superclose property in the broken H1 $H^{1}$-norm for a backward Euler fully-
Chao Xu   +3 more
doaj   +1 more source

A review of two different approaches for superconvergence analysis [PDF]

open access: yes, 1998
summary:In 1995, Wahbin presented a method for superconvergence analysis called “Interior symmetric method,” and declared that it is universal. In this paper, we carefully examine two superconvergence techniques used by mathematicians both in China and ...
Zhu, Qiding
core   +1 more source

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