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- research-articleJanuary 2025
An all-frequency stable integral system for Maxwell’s equations in 3-D penetrable media: continuous and discrete model analysis: An all-frequency stable integral system for Maxwell’s equations...
Advances in Computational Mathematics (SPACM), Volume 51, Issue 1https://doi.org/10.1007/s10444-024-10218-4AbstractWe introduce a new system of surface integral equations for Maxwell’s transmission problem in three dimensions (3-D). This system has two remarkable features, both of which we prove. First, it is well-posed at all frequencies. Second, the ...
- research-articleOctober 2024
High-rate convergent multistep collocation techniques to a first-kind Volterra integral equation along with the proportional vanishing delay
Applied Numerical Mathematics (APNM), Volume 204, Issue CPages 188–205https://doi.org/10.1016/j.apnum.2024.06.015AbstractIn the present study, we construct a considerably fast convergent multistep collocation technique in order to solve Volterra integral equations, especially first-kind ones with variable vanishing delays. Through a robust theoretical analysis, the ...
- research-articleApril 2024
Numerical and analytical findings on the Volterra integral-algebraic index-1 system with vanishing delays
Applied Mathematics and Computation (APMC), Volume 466, Issue Chttps://doi.org/10.1016/j.amc.2023.128449AbstractIn the current study, we deal with a linear system of integral-algebraic-equations (IAEs) with vanishing delay arguments, which can be considered as the most momentous novelty of this work, since it is the first time where these two concepts have ...
- research-articleJanuary 2024
Error analysis of a residual-based Galerkin’s method for a system of Cauchy singular integral equations with vanishing endpoint conditions
Journal of Computational and Applied Mathematics (JCAM), Volume 436, Issue Chttps://doi.org/10.1016/j.cam.2023.115365AbstractIn this paper, we develop Galerkin’s residual-based numerical scheme for solving a system of Cauchy-type singular integral equations of index minus N using Chebyshev polynomials of the first and second kind, where N is the total number of Cauchy-...
Highlights- A residual based Galerkin’s method using Chebyshev polynomials has been developed.
- A system of Cauchy singular integral equations (SCSIE) has been numerically solved.
- The well-posedness of the SCSIE has been shown using the ...
- research-articleJanuary 2022
On the Half-Space Matching Method for Real Wavenumber
SIAM Journal on Applied Mathematics (SJAM), Volume 82, Issue 4Pages 1287–1311https://doi.org/10.1137/21M1459216The Half-Space Matching (HSM) method has recently been developed as a new method for the solution of two-dimensional scattering problems with complex backgrounds, providing an alternative to Perfectly Matched Layers (PML) or other artificial boundary ...
- research-articleJanuary 2022
The Complex-Scaled Half-Space Matching Method
- Anne-Sophie Bonnet-Ben Dhia,
- Simon N. Chandler-Wilde,
- Sonia Fliss,
- Christophe Hazard,
- Karl-Mikael Perfekt,
- Yohanes Tjandrawidjaja
SIAM Journal on Mathematical Analysis (SIMA), Volume 54, Issue 1Pages 512–557https://doi.org/10.1137/20M1387122The half-space matching (HSM) method has recently been developed as a new method for the solution of two-dimensional scattering problems with complex backgrounds, providing an alternative to perfectly matched layers or other artificial boundary ...
- research-articleJanuary 2021
Convergence analysis of the product integration method for solving the fourth kind integral equations with weakly singular kernels
Numerical Algorithms (SPNA), Volume 86, Issue 1Pages 25–54https://doi.org/10.1007/s11075-020-00877-xAbstractIn this paper, we consider product integration method based on orthogonal polynomials to solve mixed system of Volterra integral equations of the first and second kind with weakly singular kernels. For investigation of the theoretical and ...
- research-articleJanuary 2019
A New Mixed Potential Representation for Unsteady, Incompressible Flow
We present a new integral representation for the unsteady, incompressible Stokes or Navier--Stokes equations, based on a linear combination of heat and harmonic potentials. For velocity boundary conditions, this leads to a coupled system of integral equations:...
- research-articleJuly 2018
Numerical solution for system of Cauchy type singular integral equations with its error analysis in complex plane
Applied Mathematics and Computation (APMC), Volume 328, Issue CPages 338–352https://doi.org/10.1016/j.amc.2018.01.016In this paper, the problem of finding numerical solution for a system of Cauchy type singular integral equations of first kind with index zero is considered. The analytic solution of such system is known. But it is of limited use as it is a nontrivial ...
- research-articleJanuary 2018
A new operational method to solve Abels and generalized Abels integral equations
Applied Mathematics and Computation (APMC), Volume 317, Issue CPages 49–67https://doi.org/10.1016/j.amc.2017.08.060Based on Jacobi polynomials, an operational method is proposed to solve the generalized Abels integral equations (a class of singular integral equations). These equations appear in various fields of science such as physics, astrophysics, solid mechanics,...
- research-articleFebruary 2017
Operational Tau method for singular system of Volterra integro-differential equations
Journal of Computational and Applied Mathematics (JCAM), Volume 311, Issue CPages 205–214https://doi.org/10.1016/j.cam.2016.07.017The Legendre spectral Tau matrix formulation is proposed to approximate solution of singular system of Volterra integro-differential equations. The existence and uniqueness solution of this system are investigated by means of the ź -smoothing property ...
- research-articleJanuary 2017
Boundary Integral Equation Methods for the Two-Dimensional Fluid-Solid Interaction Problem
SIAM Journal on Numerical Analysis (SINUM), Volume 55, Issue 5Pages 2361–2393https://doi.org/10.1137/16M1075673This paper is concerned with boundary integral equation methods for solving the two-dimensional fluid-solid interaction problem. We reduce the problem to three different systems of boundary integral equations via direct and indirect approaches. Existence ...
- articleOctober 2016
Numerical solution and structural analysis of two-dimensional integral-algebraic equations
Numerical Algorithms (SPNA), Volume 73, Issue 2Pages 305–322https://doi.org/10.1007/s11075-016-0096-9The ź-smoothing property of a one-dimensional Volterra integral operator and some projectors (Liang and Brumer, SIAM J. Numer. Anal. 51, 2238---2259 (2013)) are extended for two-dimensional integral-algebraic equations (TIAEs). Using these concepts, we ...
- research-articleJanuary 2015
A High Performance Computing and Sensitivity Analysis Algorithm for Stochastic Many-Particle Wave Scattering
SIAM Journal on Scientific Computing (SISC), Volume 37, Issue 3Pages A1475–A1503https://doi.org/10.1137/140996069We present a high performance computing framework for quantifying uncertainties in the propagation of acoustic waves through a stochastic media comprising a large number of three-dimensional particles. We subsequently describe an efficient postprocessing ...
- articleJune 2013
The semi-explicit Volterra integral algebraic equations with weakly singular kernels: The numerical treatments
Journal of Computational and Applied Mathematics (JCAM), Volume 245Pages 121–132https://doi.org/10.1016/j.cam.2012.12.012This paper deals with some theoretical and numerical results for Volterra Integral Algebraic Equations (IAEs) of index-1 with weakly singular kernels. This type of equations typically has solutions whose derivatives are unbounded at the left endpoint of ...
- articleOctober 2008
A parallel algorithm for large systems of Volterra integral equations of Abel type
Journal of Computational and Applied Mathematics (JCAM), Volume 220, Issue 1-2Pages 749–758https://doi.org/10.1016/j.cam.2008.05.026A significative number of recent applications require numerical solution of large systems of Abel-Volterra integral equations. Here we propose a parallel algorithm to numerically solve a class of these systems, designed for a distributed-memory MIMD ...
- articleMarch 1985
The fast Fourier transform and the numerical solution of one-dimensional boundary integral equations
Here we present a fully discretized projection method with Fourier series which is based on a modification of the fast Fourier transform. The method is applied to systems of integro-differential equations with the Cauchy kernel, boundary integral ...