Showing posts with label estimates. Show all posts
Showing posts with label estimates. Show all posts

Sunday, 1 May 2022

Precise Estimates for the Solution of Stochastic Functional Differential Equations with Discontinuous Initial Data: A Mathematical Approach | Chapter 01 | Novel Research Aspects in Mathematical and Computer Science Vol. 1

 We have established a uniform error bound for the Euler approximation to the solution process of the Stochastic Funtional Differential Equation (S.F.D.E.) (1.11) over the entire time span in this chapter. We discovered the upper bound for the difference between the actual solution process and its Euler approximation by computing the difference between the actual solution process and its Euler approximation. The reliance of this difference on the starting data has also been investigated. We've also shown that the solution process's Euler approximation has a significant convergence order.



Author(S) Details


Tagelsir A. Ahmed
Department of Pure Mathematics, Faculty of Mathematical Sciences, University of Khartoum, Sudan.

J. A. van Casteren
Department of Mathematics and Computer Science, University of Antwerp (UA), Middelheimlaan 1, 2020 Antwerp, Belgium.

View Book:- https://stm.bookpi.org/NRAMCS-V1/article/view/6547

Friday, 11 March 2022

Uniform Convergence of Euler Approximation of the Solution of Stochastic Functional Differential Equations with Discontinuous Initial Data | Chapter 03 | Recent Recent Advances in Mathematical Research and Computer Science Vol. 9

 Because model Delay SDEs are often non-linear and do not allow for explicit solutions, numerical approximation approaches for solutions of delay stochastic equations are clearly required. Early explorations in this area were conducted in [1] and [2]. Many physical phenomenon models are stochastic equations. Many of these stochastic differential equations do not have an explicit solution, but we can apply an appropriate approximation approach to obtain an approximate solution for our ordinary SDE. "Stochastic Functional Differential Equations (S.F.D.E's)" in this context refers to "Delay Stochastic Differential Equations." We developed an Euler approximation scheme for the solution process of a Stochastic Functional Differential Equation with possibly discontinuous initial data in this work, and we demonstrated that this Euler scheme (under appropriate conditions) converges to the solution process as the mesh of the partition approaches zero, see also[3] and [4].

The approximation theorem we proposed provides a mechanism for approximating the solution of S.F.D.E's with potentially discontinuous initial data. It's worth noting that we're looking at S.F.D.E. here, which contains both drift and diffusion coefficients. The current approximation study extends the approximation work in [1] to include S.F.D.E's with both drift and diffusion coefficients. Prof. Salah-E. A. Mohammed recommended the work on approximation in [1], which was completed by Tagelsir A. Ahmed under Prof. Salah-E. A. Mohammed's supervision.

Author(S) Details


Tagelsir A. Ahmed
Department of Pure Mathematics, Faculty of Mathematical Sciences, University of Khartoum, Sudan.

J. A. Van Casteren
Department of Mathematics and Computer Science, University of Antwerp (UA), Middelheimlaan 1, 2020 Antwerp, Belgium.

View Book:- https://stm.bookpi.org/RAMRCS-V9/article/view/6021