Results 11 to 20 of about 19,734 (265)

Nonlinear integrable equations and nonlinear Fourier transform [PDF]

open access: yes, 1997
In the paper we study nonlocal functionals whose kernels are homogeneous generalized functions. We also use such functionals to solve the Korteweg-de Vries , the nonlinear Schrödinger and the Davey-Stewartson equations.
Fokas, A. S.   +2 more
openaire   +2 more sources

On the solvability of a nonlinear optimization problem with boundary vector control of oscillatory processes [PDF]

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2023
In the paper, the solvability of the nonlinear boundary optimization problem has been investigated for the oscillation processes, described by the integro-differential equation in partial derivatives with Fredholm integral operator.
E.F. Abdyldaeva   +2 more
doaj   +2 more sources

An Algorithm for the Closed-Form Solution of Certain Classes of Volterra–Fredholm Integral Equations of Convolution Type

open access: yesAlgorithms, 2022
In this paper, a direct operator method is presented for the exact closed-form solution of certain classes of linear and nonlinear integral Volterra–Fredholm equations of the second kind.
Efthimios Providas
doaj   +1 more source

Integrable Nonlocal Nonlinear Equations

open access: yesStudies in Applied Mathematics, 2016
A nonlocal nonlinear Schrödinger (NLS) equation was recently found by the authors and shown to be an integrable infinite dimensional Hamiltonian equation. Unlike the classical (local) case, here the nonlinearly induced “potential” is symmetric thus the nonlocal NLS equation is also symmetric.
Ablowitz, Mark J., Musslimani, Ziad H.
openaire   +4 more sources

A Unified Approach to Some Classes of Nonlinear Integral Equations

open access: yesJournal of Function Spaces, 2014
We are going to discuss some important classes of nonlinear integral equations such as integral equations of Volterra-Chandrasekhar type, quadratic integral equations of fractional orders, nonlinear integral equations of Volterra-Wiener-Hopf type, and ...
Nurgali K. Ashirbayev   +2 more
doaj   +1 more source

Approximate Methods for Solving Linear and Nonlinear Hypersingular Integral Equations

open access: yesAxioms, 2020
We propose an iterative projection method for solving linear and nonlinear hypersingular integral equations with non-Riemann integrable functions on the right-hand sides.
Ilya Boykov   +2 more
doaj   +1 more source

Inverse problem for a Fredholm third order partial integro-differential equation

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2014
The solvability of various problems for partial differential equations of the third order is researched in many papers. But, partial Fredholm integro-differential equations of the third order are studied comparatively less. Integro-differential equations
Tursun K Yuldashev
doaj   +1 more source

Classical solutions for a class of nonlinear wave equations [PDF]

open access: yesTheoretical and Applied Mechanics, 2021
We study a class of initial value problems subject to nonlinear partial differential equations of hyperbolic type. A new topological approach is applied to prove the existence of nontrivial nonnegative solutions. More precisely, we propose a new integral
Georgiev Svetlin   +2 more
doaj   +1 more source

On the existence of solutions of some non-linear functional integral equations in Banach algebra with applications

open access: yesArab Journal of Basic and Applied Sciences, 2020
In this article, we establish some results for the existence of solution of nonlinear functional integral equations by using Darbo’s fixed point theorem in Banach algebra.
Amar Deep, Deepmala, Cemil Tunç
doaj   +1 more source

Nonlinear Alternative: Application to an Integral Equation [PDF]

open access: yesJournal of Applied Analysis, 1999
We prove the existence of solutions to an integral equation modeling the infiltration of a fluid in an isotropic homogeneous porous ...
openaire   +2 more sources

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