AbstractIn this paper we investigate the existence of solutions of a class of four-point boundary value problems for a fourth order ordinary differential equation. Our analysis relies on a nonlinear alternative of Leray–Schauder type
We discuss the existence of solution for the fully fourth-order boundary value problem u(4)=f(t,u,u′...
AbstractThis paper deals with the existence of positive solutions for the fourth-order nonlinear ord...
The consideration of the eigenvalue approach and a comparison between thelinear and nonlinear fourth...
In this paper we investigate the existence of solutions of a class of four-point boundary-value pro...
In this paper, the fourth order differential equation with four-point boundary value problem. Some s...
AbstractIn this work, the authors consider the fourth order nonlinear ordinary differential equation...
AbstractIn this paper, the authors consider the nonlinear fourth order ordinary differential equatio...
In this paper, the authors consider the nonlinear fourth order ordinary differential equation u″″ (...
AbstractThis paper is concerned with the fourth-order ordinary differential equationu(4)(t)=f(t,u(t)...
We investigate the existence of positive or a negative solution of several classes of fourpoint boun...
AbstractWe develop a new method of lower and upper solutions for a fourth-order nonlinear boundary v...
Abstract. In this article we investigate the existence of positive and/or neg-ative solutions of a c...
Using the theory of the fixed point index in a cone and the Leray-Schauder degree, this paper inves...
AbstractIn this paper, we study the existence and multiplicity of nontrivial solutions for the fourt...
AbstractDifferential inequality method, bounding function method and topological degree are applied ...
We discuss the existence of solution for the fully fourth-order boundary value problem u(4)=f(t,u,u′...
AbstractThis paper deals with the existence of positive solutions for the fourth-order nonlinear ord...
The consideration of the eigenvalue approach and a comparison between thelinear and nonlinear fourth...
In this paper we investigate the existence of solutions of a class of four-point boundary-value pro...
In this paper, the fourth order differential equation with four-point boundary value problem. Some s...
AbstractIn this work, the authors consider the fourth order nonlinear ordinary differential equation...
AbstractIn this paper, the authors consider the nonlinear fourth order ordinary differential equatio...
In this paper, the authors consider the nonlinear fourth order ordinary differential equation u″″ (...
AbstractThis paper is concerned with the fourth-order ordinary differential equationu(4)(t)=f(t,u(t)...
We investigate the existence of positive or a negative solution of several classes of fourpoint boun...
AbstractWe develop a new method of lower and upper solutions for a fourth-order nonlinear boundary v...
Abstract. In this article we investigate the existence of positive and/or neg-ative solutions of a c...
Using the theory of the fixed point index in a cone and the Leray-Schauder degree, this paper inves...
AbstractIn this paper, we study the existence and multiplicity of nontrivial solutions for the fourt...
AbstractDifferential inequality method, bounding function method and topological degree are applied ...
We discuss the existence of solution for the fully fourth-order boundary value problem u(4)=f(t,u,u′...
AbstractThis paper deals with the existence of positive solutions for the fourth-order nonlinear ord...
The consideration of the eigenvalue approach and a comparison between thelinear and nonlinear fourth...
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