Results 21 to 30 of about 464 (65)

A nonstandard Euler-Maruyama scheme [PDF]

open access: yes, 2015
We construct a nonstandard finite difference numerical scheme to approximate stochastic differential equations (SDEs) using the idea of weighed step introduced by R.E. Mickens.
Pierret, Frédéric
core   +1 more source

An efficient variable stepsize rational method for stiff, singular and singularly perturbed problems

open access: yesAlexandria Engineering Journal, 2022
In this article, a new iterative method of the rational type having fifth-order of accuracy is proposed to solve initial value problems. The method is self-starting, stable, consistent, and convergent, whereas local truncation error analysis has also ...
Sania Qureshi   +5 more
doaj  

Unconditionnally stable scheme for Riccati equation

open access: yes, 2000
We present a numerical scheme for the resolution of matrix Riccati equation used in control problems. The scheme is unconditionnally stable and the solution is definite positive at each time step of the resolution.
Abdelkader Saïdi   +3 more
core   +1 more source

Numerical simulation for nonlinear space-fractional reaction convection-diffusion equation with its application

open access: yesAlexandria Engineering Journal, 2023
In this research, we adopt a fully implicit approach with a weighted shifted Grunwald–Letnikov difference operator to find the numerical solution of the one and two-dimensional nonlinear space fractional convection–diffusion-reaction equation over a ...
Eyaya Fekadie Anley   +3 more
doaj  

A new adaptive nonlinear numerical method for singular and stiff differential problems

open access: yesAlexandria Engineering Journal, 2023
In this work, a new adaptive numerical method is proposed for solving nonlinear, singular, and stiff initial value problems often encountered in real life.
Sania Qureshi   +6 more
doaj  

Cubic spline solutions of the ninth order linear and non-linear boundary value problems

open access: yesAlexandria Engineering Journal, 2022
A lot of numerical formulations of physical phenomena contain 9th-order BVPs. The presented probe intends to consider the spline solutions of the 9th-order boundary value problems using Cubic B Spline(CBS).
Xiao-Zhong Zhang   +5 more
doaj  

A Numerical Method for SDEs with Discontinuous Drift

open access: yes, 2015
In this paper we introduce a transformation technique, which can on the one hand be used to prove existence and uniqueness for a class of SDEs with discontinuous drift coefficient.
Leobacher, Gunther   +1 more
core   +1 more source

Centrosymmetric Matrices in the Sinc Collocation Method for Sturm-Liouville Problems

open access: yes, 2015
Recently, we used the Sinc collocation method with the double exponential transformation to compute eigenvalues for singular Sturm-Liouville problems.
Gaudreau, Philippe, Safouhi, Hassan
core   +1 more source

Uniform convergence on a Bakhvalov-type mesh using the preconditioning approach: Technical report [PDF]

open access: yes, 2015
The linear singularly perturbed convection-diffusion problem in one dimension is considered and its discretization on a Bakhvalov-type mesh is analyzed. The preconditioning technique is used to obtain the pointwise convergence uniform in the perturbation
Nhan, Thái Anh, Vulanović, Relja
core   +2 more sources

Blended General Linear Methods based on Boundary Value Methods in the GBDF family [PDF]

open access: yes, 2009
Among the methods for solving ODE-IVPs, the class of General Linear Methods (GLMs) is able to encompass most of them, ranging from Linear Multistep Formulae (LMF) to RK formulae.
Brugnano, Luigi, Magherini, Cecilia
core   +4 more sources

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