Results 1 to 10 of about 126 (84)

Nontrivial solutions of discrete Kirchhoff-type problems via Morse theory

open access: yesAdvances in Nonlinear Analysis, 2022
In this article, we study discrete Kirchhoff-type problems when the nonlinearity is resonant at both zero and infinity. We establish a series of results on the existence of nontrivial solutions by combining variational method with Morse theory.
Long Yuhua
doaj   +1 more source

Positive solutions of nonlinear fourth order iterative differential equations with two-point and integral boundary conditions

open access: yesNonautonomous Dynamical Systems, 2021
This paper provides sufficient conditions to guarantee the existence, uniqueness and continuous dependence of positive solutions of a nonlinear fourth order iterative differential equations with two-point and integral boundary conditions.
Mansouri Bouzid   +2 more
doaj   +1 more source

Blowing-up solutions for time-fractional equations on a bounded domain

open access: yesAdvances in Mechanical Engineering, 2022
This paper proposes initial-boundary value problems for time-fractional analogs of Kuramoto-Sivashinsky, Korpusov-Pletner-Sveshnikov, Cahn-Allen, and Hoff equations due to a bounded domain.
Abdellatif Boutiara   +4 more
doaj   +1 more source

Third-order differential equations with three-point boundary conditions

open access: yesOpen Mathematics, 2021
In this paper, a third-order ordinary differential equation coupled to three-point boundary conditions is considered. The related Green’s function changes its sign on the square of definition. Despite this, we are able to deduce the existence of positive
Cabada Alberto, Dimitrov Nikolay D.
doaj   +1 more source

A monotone iteration for a nonlinear Euler-Bernoulli beam equation with indefinite weight and Neumann boundary conditions

open access: yesOpen Mathematics, 2022
In this article, we focus on the existence of positive solutions and establish a corresponding iterative scheme for a nonlinear fourth-order equation with indefinite weight and Neumann boundary conditions y(4)(x)+(k1+k2)y″(x)+k1k2y(x)=λh(x)f(y(x)),x∈[0,1]
Wang Jingjing, Gao Chenghua, He Xingyue
doaj   +1 more source

Sharper existence and uniqueness results for solutions to fourth-order boundary value problems and elastic beam analysis

open access: yesOpen Mathematics, 2020
We examine the existence and uniqueness of solutions to two-point boundary value problems involving fourth-order, ordinary differential equations. Such problems have interesting applications to modelling the deflections of beams.
Almuthaybiri Saleh S.   +1 more
doaj   +1 more source

On some higher order boundary value problems at resonance with integral boundary conditions

open access: yesArab Journal of Mathematical Sciences, 2018
This paper investigates the existence of solutions for higher-order multipoint boundary value problems at resonance. We obtain existence results by using coincidence degree arguments.
Samuel Azubuike Iyase   +1 more
doaj   +1 more source

Existence and multiplicity of solutions for second-order Dirichlet problems with nonlinear impulses

open access: yesOpen Mathematics, 2022
We are concerned with Dirichlet problems of impulsive differential equations −u″(x)−λu(x)+g(x,u(x))+∑j=1pIj(u(x))δ(x−yj)=f(x)for a.e.x∈(0,π),u(0)=u(π)=0,\left\{\begin{array}{l}-{u}^{^{\prime\prime} }\left(x)-\lambda u\left(x)+g\left(x,u\left(x))+\mathop{\
Ma Mantang, Ma Ruyun
doaj   +1 more source

Existence results for systems of first-order nabla dynamic inclusions on time scales

open access: yesArab Journal of Mathematical Sciences, 2019
In this article, we study the existence of solutions to systems of first-order ∇-dynamic inclusions on time scales with terminal or periodic boundary conditions. We employ the method of solution-tube and Kakutani fixed point theorem.
Bouharket Bendouma, Ahmed Hammoudi
doaj   +1 more source

Positive solutions for fractional differential equation at resonance under integral boundary conditions

open access: yesDemonstratio Mathematica, 2022
By using the theory of fixed point index and spectral theory of linear operators, we study the existence of positive solutions for Riemann-Liouville fractional differential equations at resonance. Our approach will provide some new ideas for the study of
Wang Youyu, Huang Yue, Li Xianfei
doaj   +1 more source

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