Results 31 to 40 of about 7,549 (163)

Algebraic structure of space and field

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2001
We investigate an algebraic structure of the space of solutions of autonomous nonlinear differential equations of certain type. It is shown that for these equations infinitely many binary algebraic laws of addition of solutions exist.
Z. Z. Khukhunashvili   +1 more
doaj   +1 more source

Nonlinear Schr�dinger equations and simple Lie algebras

open access: yesCommunications in Mathematical Physics, 1983
This paper deals with a generalisation and classification of the nonlinear Schrödinger (NLS) equation. A system of integrable, generalised NLS equations is associated with each Hermitian symmetric space. Each of these NLS equations is a reduction of a generalised second order ''N-wave'' equation associated with a reductive homogeneous space which is no
Fordy, Allan P., Kulish, Peter P.
openaire   +3 more sources

A numerical technique based on operational matrices for solving nonlinear integro-differential equations [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization, 2014
This paper presents a computational method for solving two types of integro-differential equations, system of nonlinear high order Volterra-Fredholm integro-differential equation(VFIDEs) and nonlinear fractional order integro-differential equations.
A. Golbabai
doaj   +1 more source

An approach of extrapolation methods for the solution of nonlinear Volterra–Fredholm integral equations of the second kind [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization
This study presents the process of using extrapolation methods to solve the nonlinear Volterra–Fredholm integral equations of the second kind. To do this, by approximating the integral terms contained in equations by a quadrature rule, the nonlinear ...
H. Safdari   +2 more
doaj   +1 more source

A collocation method to the solution of nonlinear fredholm-hammerstein integral and integro-differential equation [PDF]

open access: yesJournal of Hyperstructures, 2013
This paper presents a computational technique for the solution of the nonlinear Fredholm-Hammerstein integral and integrodifferential equations. A hybrid of block-pulse functions and the second kind Chebyshev polynomials (hereafter called as HBC) is used
F. Mirzaee, Elham Hadadiyan
doaj   +1 more source

An approximation technique for solving anti-symmetric constant force and anti-symmetric quadratic nonlinear oscillators

open access: yesJournal of Low Frequency Noise, Vibration and Active Control
Earlier, an approximation technique was presented for solving strong nonlinear oscillator equations. Due to arising algebraic complexities, the method fails to determine suitable solutions of some nonlinear oscillators such as quadratic oscillators, the ...
Md Ashraful Huq, M Kamrul Hasan, MS Alam
doaj   +1 more source

Analytical wave solutions for the nonlinear three-dimensional modified Korteweg-de Vries-Zakharov-Kuznetsov and two-dimensional Kadomtsev-Petviashvili-Burgers equations

open access: yesResults in Physics, 2019
In this work, we study the procedure involved in applying the extended (G′(ϕ)G(ϕ))-expansion method in solving nonlinear partial differential equations.
Dianchen Lu, Aly Seadawy, David Yaro
doaj   +1 more source

Piecewise continuous approach to nonlinear differential equations approximation problem of computational structural mechanics

open access: yesMATEC Web of Conferences, 2018
This paper presents a nonlinear differential equations system piecewise continuous approximation. The piecewise continuous approximation improves piecewise linear approximation through reducing the errors at the boundaries of different linear ...
Leibov Roman
doaj   +1 more source

An inverse problem for a nonlinear Fredholm integro-differential equation of fourth order with degenerate kernel

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2015
We consider the questions of one value solvability of the inverse problem for a nonlinear partial Fredholm type integro-differential equation of the fourth order with degenerate kernel. The method of degenerate kernel is developed for the case of inverse
Tursun K Yuldashev
doaj   +1 more source

Approximate Time-Fractional Differential Equations

open access: yesDiscrete Dynamics in Nature and Society
This study introduces an indirect approach to find the solutions of the fractional Bessel differential equation using fractional Bernoulli functions and Caputo’s fractional derivative.
Saber Tavan   +3 more
doaj   +1 more source

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