Results 71 to 80 of about 123,466,522 (150)
Multiadaptive Galerkin Methods for ODEs III: A Priori Error Estimates [PDF]
SIAM Journal on Numerical Analysis, 2006 The multiadaptive continuous/discontinuous Galerkin methods \mcgq{} and \mdgq{} for the numerical solution of initial value problems for ordinary differential equations are based on piecewise polynomial approximation of degree q on partitions in time with time steps which may vary for different components of the computed solution.
openaire +2 more sources
Discontinuous Galerkin Methods on hp-Anisotropic Meshes I: A Priori Error Analysis [PDF]
, 2006 We consider the a priori error analysis of hp-version interior penalty discontinuous Galerkin methods for second-order partial differential equations with nonnegative characteristic form under weak assumptions on the mesh design and the local finite ...
Emmanuil H. Georgoulis +5 more
core
Error estimates of a semi-discrete LDG method for the system of damped acoustic wave equation
Advances in Difference Equations, 2018 We consider a system of acoustic wave equation possessing lower-order perturbation terms in a bounded domain in R2 $\mathbb{R}^{2}$. In this paper, we show the system is well-posed and stable with energy decays introducing a local discontinuous Galerkin (
Dojin Kim
doaj +1 more source
Advances in Difference Equations, 2020 In this article, a finite volume element method with the second-order weighted and shifted Grünwald difference (WSGD) formula is proposed and studied for nonlinear time fractional mobile/immobile transport equations on triangular grids. By using the WSGD
Jie Zhao +3 more
doaj +1 more source
FPU-Supported Running Error Analysis
Acta Polytechnica, 2010 A-posteriori forward rounding error analyses tend to give sharper error estimates than a-priori ones, as they use actual data quantities. One of such a-posteriori analysis – running error analysis – uses expressions consisting of two parts; one generates
T. Zahradnický, R. Lórencz
doaj
Mathematics, 2019 We consider a time-fractional diffusion equation for an inverse problem to determine an unknown source term, whereby the input data is obtained at a certain time. In general, the inverse problems are ill-posed in the sense of Hadamard. Therefore, in this
Le Dinh Long +3 more
doaj +1 more source
Priori Error Estimate of Deep Mixed Residual Method for Elliptic PDEs
, 2022 In this work, we derive a priori error estimate of the mixed residual method when solving some elliptic PDEs. Our work is the first theoretical study of this method.
Li, Lingfeng +3 more
core
, 2013 An a priori error estimate using a so called α,β- periodic transformation to study electromagnetic waves in a periodic diffraction grating is derived. It has been reported for single scattering that there is an instability in numerical methods for high ...
Mulholland, Anthony, Lord, Natacha
core +4 more sources
MAP Estimation of Chin and Cheek Contours in Video Sequences
EURASIP Journal on Advances in Signal Processing, 2004 An algorithm for the estimation of chin and cheek contours in video sequences is proposed. This algorithm exploits a priori knowledge about shape and position of chin and cheek contours in images.
Kampmann Markus
doaj +1 more source
Chebyshev collocation method for fractional Newell-Whitehead-Segel equation
Alexandria Engineering JournalIn this paper, a collocation approach for the fractional Newell-Whitehead-Segel equation is described. The finite difference method is used to discretized the time-fractional derivative, and Chebyshev functions are used for interpolating the spatial ...
E. Gebril, M.S. El-Azab, M. Sameeh
doaj +1 more source