Results 1 to 10 of about 45,294 (190)

Bending-torsional vibrations of aircraft wing [PDF]

open access: yesE3S Web of Conferences, 2023
The problems of bending-torsional flutter of an aircraft wing are considered. Using equations of motion by the Bubnov-Galerkin method, based on the polynomial approximation of deflections and angle of twist, the problem is reduced to studying a system of
Khudayarov B. A.   +4 more
doaj   +1 more source

The periodic solution for some systems of nonlinear integro-differential equations of Volterra type. [PDF]

open access: yesمجلة التربية والعلم, 2008
In this paper we investigate the existence and approximation of the periodic solution for a system of nonlinear integro-differential equations of Volterra type. The numerical-analytic method has been used to study the periodic solutions of the non-linear
Raad Putrus, Ghada Jameel
doaj   +1 more source

Method of functional parametrization for solving a semi-periodic initial problem for fourth-order partial differential equations

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2020
A semi-periodic initial boundary-value problem for a fourth-order system of partial differential equations is considered. Using the method of functional parametrization, an additional parameter is carried out and the studied problem is reduced to the ...
A.T. Assanova, Zh.S. Tokmurzin
doaj   +1 more source

Free integro-differential algebras and Groebner-Shirshov bases [PDF]

open access: yes, 2014
The notion of commutative integro-differential algebra was introduced for the algebraic study of boundary problems for linear ordinary differential equations. Its noncommutative analog achieves a similar purpose for linear systems of such equations.
Guo, Li   +5 more
core   +1 more source

The existence and approximation of the periodic solution of a system of nonlinear differential-differential equations of the first order with independent variable delay with boundary conditions [PDF]

open access: yesمجلة التربية والعلم, 2007
In this paper we study the existence and approximation of the solutions for some systems of nonlinear integro-differential equations with having retarded arguments and boundary conditions. The numerical–analytic method has been used to study the periodic
Raad Putrus, Ann Isaac
doaj   +1 more source

An ordinary integro-differential equation with a degenerate kernel and an integral condition

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2016
We consider the questions of one value solvability of the nonlocal boundary value problem for a nonlinear ordinary integro-differential equation with a degenerate kernel and a reflective argument.
Tursun K Yuldashev
doaj   +1 more source

Existence of a periodic solutions for certain system of nonlinear integro-differential equations [PDF]

open access: yesمجلة التربية والعلم, 2008
In this paper we investigate the existence and approximation of the periodic solutions for certain systems of nonlinear integro-differential equations, by using the method of successive periodic approximation of ordinary differential equations which is ...
R. Butris
doaj   +1 more source

Periodic boundary value problem for second order integro‐ordinary differential equations with general kernel and Carathéodory nonlinearities [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1994
We study the existence of solutions for the periodic boundary value problem for some second order integro‐differential equations with a general kernel. Also we develop the monotone method to approximate the extremal solutions of the problem.
openaire   +2 more sources

Symbolic Analysis for Boundary Problems: From Rewriting to Parametrized Groebner Bases [PDF]

open access: yes, 2010
We review our algebraic framework for linear boundary problems (concentrating on ordinary differential equations). Its starting point is an appropriate algebraization of the domain of functions, which we have named integro-differential algebras.
Regensburger, Georg   +4 more
core   +1 more source

On Lp-solvability of stochastic integro-differential equations [PDF]

open access: yes, 2021
In this thesis, we investigate the Lp-solvability of a class of (possibly) degenerate stochastic integro-differential equations (SIDEs) of parabolic type, which includes the Zakai equation in nonlinear filtering for jump diffusions and the Kolmogorov ...
Wu, Sizhou
core   +1 more source

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