Results 31 to 40 of about 36,781 (141)

Singularly perturbed Volterra integral equations with weakly singular kernels

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
We consider finding asymptotic solutions of the singularly perturbed linear Volterra integral equations with weakly singular kernels. An interesting aspect of these problems is that the discontinuity of the kernel causes layer solutions to decay ...
Angelina Bijura
doaj   +1 more source

Numerical solution of variable-order time fractional weakly singular partial integro-differential equations with error estimation

open access: yesMathematical Modelling and Analysis, 2020
In this paper, we apply Legendre-Laguerre functions (LLFs) and collocation method to obtain the approximate solution of variable-order time-fractional partial integro-differential equations (VO-TF-PIDEs) with the weakly singular kernel.
Haniye Dehestani   +2 more
doaj   +1 more source

Finite rank perturbations in products of coupled random matrices: From one correlated to two Wishart ensembles

open access: yes, 2018
We compare finite rank perturbations of the following three ensembles of complex rectangular random matrices: First, a generalised Wishart ensemble with one random and two fixed correlation matrices introduced by Borodin and P\'ech\'e, second, the ...
Akemann, Gernot   +3 more
core   +1 more source

Domains with a continuous exhaustion in weakly complete surfaces [PDF]

open access: yes, 2019
In previous works, G. Tomassini and the authors studied and classified complex surfaces admitting a real-analytic pluri-subharmonic exhaustion function; let $X$ be such a surface and $D\subseteq X$ a domain admitting a \emph{continuous} plurisubharmonic ...
Mongodi, Samuele, Slodkowski, Zbigniew
core   +2 more sources

Bernoulli Polynomials Method for Solving Integral Equations with Singular Kernel

open access: yesمجلة بغداد للعلوم
There is always an interest in an effective technique to generate a numerical solution of integral equations with singular or weakly singular kernels more precisely because numerical methods have limitations.
Muna M. Mustafa, Heba A. Abd-Alrazak
doaj   +1 more source

Numerical solution of volterra integral equations with weakly singular kernel using legendre wavelet method [PDF]

open access: yesMathematics and Computational Sciences
The presented paper investigates a new numerical method based on the characteristics of Legendre wavelet for solving Volterra Integral equations in this method,With the help of block-pulse functions and their characteristics, we obtain the fractional ...
Ali Khani, Nader Belalzadeh
doaj   +1 more source

Extrapolation Method for Non-Linear Weakly Singular Volterra Integral Equation with Time Delay

open access: yesMathematics, 2021
This paper proposes an extrapolation method to solve a class of non-linear weakly singular kernel Volterra integral equations with vanishing delay. After the existence and uniqueness of the solution to the original equation are proved, we combine an ...
Li Zhang, Jin Huang, Hu Li, Yifei Wang
doaj   +1 more source

Equidistribution results for singular metrics on line bundles [PDF]

open access: yes, 2011
Let L be a holomorphic line bundle with a positively curved singular Hermitian metric over a complex manifold X. One can define naturally the sequence of Fubini-Study currents associated to the space of square integrable holomorphic sections of the p-th ...
Coman, Dan, Marinescu, George
core   +2 more sources

Planewave density interpolation methods for 3D Helmholtz boundary integral equations

open access: yes, 2019
This paper introduces planewave density interpolation methods for the regularization of weakly singular, strongly singular, hypersingular and nearly singular integral kernels present in 3D Helmholtz surface layer potentials and associated integral ...
Faria, Luiz   +2 more
core   +3 more sources

Volume and surface integral equations for electromagnetic scattering by a dielectric body

open access: yes, 2010
13 pagesInternational audienceWe derive and analyze two equivalent integral formulations for the time-harmonic electromagnetic scattering by a dielectric object. One is a volume integral equation (VIE) with a strongly singular kernel and the other one is
Costabel, Martin   +2 more
core   +4 more sources

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