Results 1 to 10 of about 403,920 (284)

A periodic boundary value problem with switchings under nonlinear perturbations

open access: yesBoundary Value Problems, 2023
We investigate the existence of solutions of weakly nonlinear periodic boundary value problems for systems of ordinary differential equations with switchings and the construction of these solutions.
Peter Benner   +2 more
doaj   +4 more sources

Solvability of a fourth-order boundary value problem with periodic boundary conditions II [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1991
Let f:[0,1]×R4→R be a function satisfying Caratheodory's conditions and e(x)∈L1[0,1]. This paper is concerned with the solvability of the fourth-order fully quasilinear boundary value problem d4udx4+f(x,u(x),u′(x),u″(x),u‴(x))=e(x ...
Chaitan P. Gupta
doaj   +4 more sources

On the solvability of a semi-periodic boundary value problem for the nonlinear Goursat equation [PDF]

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2021
In this paper, by means of a change of variables, a nonlinear semi-periodic boundary value problem for the Goursat equation is reduced to a linear gravity problem for hyperbolic equations. Reintroducing a new function, the obtained problem is reduced to
N.T. Orumbayeva   +2 more
doaj   +2 more sources

Periodic solutions for an impulsive system of integro-differential equations with maxima [PDF]

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2022
A periodical boundary value problem for a first-order system of ordinary integro-differential equations with impulsive effects and maxima is investigated.
Tursun K. Yuldashev
doaj   +1 more source

Fourth Order Impulsive Periodic Boundary Value Problems [PDF]

open access: yesDifferential Equations and Dynamical Systems, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Fialho, João, Minhós, Feliz
openaire   +3 more sources

On one solution of a periodic boundary value problem for a hyperbolic equations [PDF]

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2023
In a rectangular domain, we consider a boundary value problem periodic in one variable for a system of partial differential equations of hyperbolic type. Introducing a new unknown function, this problem is reduced to an equivalent boundary value
T.D. Tokmagambetova, N.T. Orumbayeva
doaj   +3 more sources

On some analogues of periodic problems for Laplace equation with an oblique derivative under boundary conditions [PDF]

open access: yesE-Journal of Analysis and Applied Mathematics, 2020
In this paper, we study solvability of new classes of nonlocal boundary value problems for the Laplace equation in a ball. The considered problems are multidimensional analogues (in the case of a ball) of classical periodic boundary value problems in ...
Batirkhan Turmetov   +2 more
doaj   +1 more source

Affine-Periodic Boundary Value Problem for a Fractional Differential Inclusion

open access: yesFractal and Fractional, 2023
In the article, affine-periodic boundary value problem involving fractional derivative is considered. Existence of solutions to a Caputo-type fractional differential inclusion is researched by some fixed-point theorems and set-valued analysis theory ...
Shanshan Gao, Sen Zhao, Jing Lu
doaj   +1 more source

Nonlinear Discrete Periodic Boundary Value Problems at Resonance [PDF]

open access: yesAdvances in Difference Equations, 2009
Let \(T\in {\mathbb N}\) be an integer with \(T>2\), and \({\mathbb T}:=\{1,2,\dots,T\}\). The authors study the existence of solutions of nonlinear discrete problems \(\Delta ^{2}u(t-1)+\lambda _{k}a(t)u(t)+g(t,u(t))=h(t),\) \(t\in {\mathbb T},\) \(u(0)=u(T),\) \(u(1)=u(T+1),\) where \(a,\) \(h:{\mathbb T}\rightarrow {\mathbb R}\) with \(a>0 ...
Ruyun Ma, Huili Ma
openaire   +4 more sources

Constant-Sign Green’s Function of a Second-Order Perturbed Periodic Problem

open access: yesAxioms, 2022
In this paper, we were interested in obtaining the exact expression and studying the regions of constant sign of Green’s function related to a second-order perturbed periodic problem coupled with integral boundary conditions at the extremes of the ...
Alberto Cabada   +2 more
doaj   +1 more source

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