Results 21 to 30 of about 173 (43)

Two combined methods for the global solution of implicit semilinear differential equations with the use of spectral projectors and Taylor expansions

open access: yes, 2019
Two combined numerical methods for solving semilinear differential-algebraic equations (DAEs) are obtained and their convergence is proved. The comparative analysis of these methods is carried out and conclusions about the effectiveness of their ...
Filipkovska, M. S.
core   +1 more source

A Convergent Scheme for Solving Initial Value Problems with Polynomial and Exponential Functions [PDF]

open access: yes, 2021
This paper presents the development of a convergent numerical scheme for the solution of initial value problems of first order ordinary differential equations.
Khalil, Sobia   +2 more
core   +1 more source

Uniform approximation and explicit estimates for the prolate spheroidal wave functions

open access: yes, 2014
For fixed $c,$ Prolate Spheroidal Wave Functions (PSWFs), denoted by $\psi_{n, c},$ form an orthogonal basis with remarkable properties for the space of band-limited functions with bandwith $c$.
Bonami, Aline, Karoui, Abderrazek
core   +2 more sources

On Bakhvalov-type meshes for a linear convection-diffusion problem in 2D [PDF]

open access: yes, 2021
For singularly perturbed two-dimensional linear convection-diffusion problems, although optimal error estimates of an upwind finite difference scheme on Bakhvalov-type meshes are widely known, the analysis remains unanswered (Roos and Stynes in Comput ...
Mai, Vinh Quang, Nhan, Thai Anh
core   +2 more sources

Error analysis of trigonometric integrators for semilinear wave equations [PDF]

open access: yes, 2015
An error analysis of trigonometric integrators (or exponential integrators) applied to spatial semi-discretizations of semilinear wave equations with periodic boundary conditions in one space dimension is given.
Gauckler, Ludwig
core  

Stiff oscillatory systems, delta jumps and white noise [PDF]

open access: yes, 1998
Two model problems for stiff oscillatory systems are introduced. Both comprise a linear superposition of N >> 1 harmonic oscillators used as a forcing term for a scalar ODE.
Cano, B.   +3 more
core   +2 more sources

Practical implementation and error bounds of integer-type general algorithm for higher order differential equations

open access: yes, 2010
In our preceding paper, we have proposed an algorithm for obtaining finite-norm solutions of higher-order linear ordinary differential equations of the Fuchsian type [\sum_m p_m (x) (d/dx)^m] f(x) = 0 (where p_m is a polynomial with rational-number ...
Brenner S.C.   +5 more
core   +1 more source

On global error estimation and control for initial value problems [PDF]

open access: yes, 2005
This paper addresses global error estimation and control for initial value problems for ordinary differential equations. The focus lies on a comparison between a novel approach based on the adjoint method combined with a small sample statistical ...
Lang, J. (Jens), Verwer, J.G. (Jan)
core  

Approximation Bounds for Model Reduction on Polynomially Mapped Manifolds

open access: yes, 2023
For projection-based linear-subspace model order reduction (MOR), it is well known that the Kolmogorov n-width describes the best-possible error for a reduced order model (ROM) of size n.
Buchfink, Patrick   +2 more
core  

Geometry Equilibration of Crystalline Defects in Quantum and Atomistic Descriptions

open access: yes, 2018
We develop a rigorous framework for modelling the geometry equilibration of crystalline defects. We formulate the equilibration of crystal defects as a variational problems on a discrete energy space and establish qualitatively sharp far-field decay ...
Chen, Huajie   +2 more
core   +1 more source

Home - About - Disclaimer - Privacy