Positive solutions for eigenvalue problems of fourth-order elastic beam equations. (English) Zbl 1072.34022

Yao, Qingliu

Appl. Math. Lett. 17, No. 2, 237-243 (2004).

The following fourth-order eigenvalue problem \[ w^{(4)}(t)=\lambda f(t,w(t)), \quad 0<t<1,\;\lambda >0,\qquad w(0)=w(1)=w'(0)=w'(1)=0,\tag{1} \] is studied. The author uses the Krasnoselskii-Guo fixed-point theorem on cone expansion and compression and the properties of the Green function of the corresponding homogeneous BVP to obtain several results on the existence of positive solutions of (1). Some multiplicity results are established, too.

Reviewer: Mirosława Zima (Rzeszow)

MSC:

34B18	Positive solutions to nonlinear boundary value problems for ordinary differential equations
74K10	Rods (beams, columns, shafts, arches, rings, etc.)
34B15	Nonlinear boundary value problems for ordinary differential equations

Keywords:

fourth-order elastic beam equation; positive solution; Krasnoselskii’s fixed-point theorem; eigenvalue

References:

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