Results 21 to 30 of about 404,835 (279)

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

On the Use of Discrete Fourier Transform for Solving Biperiodic Boundary Value Problem of Biharmonic Equation in the Unit Rectangle [PDF]

open access: yes, 2003
This note is addressed to solving biperiodic boundary value problem of biharmonic equation in the unit rectangle. First, we describe the necessary tools, which is discrete Fourier trans- form for one dimensional periodic sequence, and then extended the ...
GARNADI, A. D. (A)
core   +2 more sources

Solvability of a fourth order boundary value problem with periodic boundary conditions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1988
Fourth order boundary value problems arise in the study of the equilibrium of an elastaic beam under an external load. The author earlier investigated the existence and uniqueness of the solutions of the nonlinear analogues of fourth order boundary value
Chaitan P. Gupta
doaj   +1 more source

The Kuramoto–Sivashinsky equation. A Local Attractor Filled with Unstable Periodic Solutions

open access: yesМоделирование и анализ информационных систем, 2018
A periodic boundary value problem is considered for one version of the KuramotoSivashinsky equation, which is widely known in mathematical physics. Local bifurcations in a neighborhood of the spatially homogeneous equilibrium points in the case when they
Anatoli N. Kulikov, Dmitri A. Kulikov
doaj   +1 more source

Boundary value problems of quaternion-valued differential equations: solvability and Green’s function

open access: yesBoundary Value Problems, 2023
This paper is associated with Sturm–Liouville type boundary value problems and periodic boundary value problems for quaternion-valued differential equations (QDEs).
Jie Liu, Siyu Sun, Zhibo Cheng
doaj   +1 more source

Oscillatory processes in the theory of particulate formation in supersaturated chemical solutions [PDF]

open access: yes, 1975
We study a nonlinear problem which occurs in the theory of particulate formation in supersaturated chemical solutions. Mathematically, the problem involves the bifurcation of time-periodic solutions in an initial-boundary value problem involving a ...
Cohen, Donald S., Keener, James P.
core   +1 more source

Singularly perturbed higher order periodic boundary value problems

open access: yesJournal of Mathematical Analysis and Applications, 2004
Let \(n\), \(N\in\mathbb{N}\), \(n\geq 2\), \(N\geq 1\), \(T> 0\) and \(\mathbb{R}^+= (0,\infty)\). The authors consider the \(n\)th-order differential system in \(\mathbb{R}^N\) \[ x^{(n)}+ A_{n-1} x^{(n- 1)}+\cdots+ A_1x'+ A_0f(t, x)= e(t)\tag{1} \] together with the periodic boundary conditions \[ x(0)= x(T),\quad x'(0)= x'(T),\dots, x^{(n-1)}(0)= x^
NJOKU F. I., OMARI, PIERPAOLO
openaire   +2 more sources

On Antiperiodic Boundary Value Problems for Higher-Order Fractional Differential Equations

open access: yesAbstract and Applied Analysis, 2012
We study an antiperiodic boundary value problem of nonlinear fractional differential equations of order q∈(4,5]. Some existence results are obtained by applying some standard tools of fixed-point theory.
Ahmed Alsaedi   +2 more
doaj   +1 more source

Existence of solution to a periodic boundary value problem for a nonlinear impulsive fractional differential equation [PDF]

open access: yes, 2014
We study the existence of solution to a periodic boundary value problem for nonlinear impulsive fractional differential equations by using Schaeffer’s fixed point ...
Belmekki, Mohammed   +2 more
core   +2 more sources

Combinatorial Bethe ansatz and ultradiscrete Riemann theta function with rational characteristics

open access: yes, 2007
The U_q(\hat{sl}_2) vertex model at q=0 with periodic boundary condition is an integrable cellular automaton in one-dimension. By the combinatorial Bethe ansatz, the initial value problem is solved for arbitrary states in terms of an ultradiscrete ...
A. Kuniba   +20 more
core   +3 more sources

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