Results 11 to 20 of about 2,880 (261)

Singularity Subtraction for Nonlinear Weakly Singular Integral Equations of the Second Kind [PDF]

open access: yes, 2019
The singularity subtraction technique for computing an approximate solution of a linear weakly singular Fredholm integral equation of the second kind is generalized to the case of a nonlinear integral equation of the same kind. Convergence of the sequence of approximate solutions to the exact one is proved under mild standard hypotheses on the ...
Ahues, Mario   +3 more
openaire   +3 more sources

Two iterative methods for solving the volumetric singular equation for a nonlinear diffraction problem in a semi-infinite rectangular waveguide

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки, 2023
Background. The purpose of the study is to construct a nonlinear electromagnetic field inside the waveguide. We assume that the body is located in a semi-infinite rectangular waveguide and that an electromagnetic field propagates inside the body ...
Andrey O. Lapich, Mikhail Yu. Medvedik
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

Two Singularity Subtraction Schemes for a Class of Nonlinear Weakly Singular Integral Equations

open access: yesNumerical Functional Analysis and Optimization, 2022
Singularity subtraction for linear weakly singular Fredholm integral equations of the second kind is generalized to nonlinear integral equations. Two approaches are presented: The Classical Ap proach discretizes the nonlinear problem, and uses some finite dimensional linearization process to solve numerically the discrete problem.
Ahues, M.   +3 more
openaire   +2 more sources

Numerical treatments for solving nonlinear mixed integral equation

open access: yesAlexandria Engineering Journal, 2016
We consider a mixed type of nonlinear integral equation (MNLIE) of the second kind in the space C[0,T]×L2(Ω ...
M.A. Abdou, M. Basseem
doaj   +1 more source

Optical solitons in birefringent fibers with quadratic-cubic nonlinearity using three integration architectures

open access: yesAIP Advances, 2021
In this work, the nonlinear Schrödinger’s equation is studied for birefringent fibers incorporating four-wave mixing. The improved tanϕ(ξ)2-expansion, first integral, and G′G2-expansion methods are used to extract a novel class of optical solitons in the
J. F. Gómez-Aguilar   +7 more
doaj   +1 more source

On the Solution of Quadratic Nonlinear Integral Equation with Different Singular Kernels [PDF]

open access: yesMathematical Problems in Engineering, 2020
All the previous authors discussed the quadratic equation only with continuous kernels by different methods. In this paper, we introduce a mixed nonlinear quadratic integral equation (MQNLIE) with singular kernel in a logarithmic form and Carleman type. An existence and uniqueness of MQNLIE are discussed.
M. Basseem, Ahmad Alalyani
openaire   +2 more sources

Qualitative Properties of Positive Solutions of a Kind for Fractional Pantograph Problems using Technique Fixed Point Theory

open access: yesFractal and Fractional, 2022
The current paper intends to report the existence and uniqueness of positive solutions for nonlinear pantograph Caputo–Hadamard fractional differential equations.
Hamid Boulares   +4 more
doaj   +1 more source

Nonlinear integral equations singular in the dependent variable

open access: yesApplied Mathematics Letters, 2007
This paper concerns the existence of nonnegative solutions to the singular integral equation \(y(t)=\int^1_0 k(t,s)[G(s,y(s))+F(s,y(s))]ds\) \((t\in [0,1])\), where \(G\in C([0,1]\times (0,\infty),[0,\infty))\), \(F\in C([0,1]\times [0,\infty),[0,\infty))\) so \(G\) may be singular at \(y=0\).
Donal O'Regan   +2 more
openaire   +2 more sources

Bounded, asymptotically stable, and L^{1} solutions of Caputo fractional differential equations [PDF]

open access: yesOpuscula Mathematica, 2015
The existence of bounded solutions, asymptotically stable solutions, and \(L^1\) solutions of a Caputo fractional differential equation has been studied in this paper.
Muhammad N. Islam
doaj   +1 more source

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