在障碍带条件下,利用Leray-Schauder原理的推论研究非线性常微分方程四阶三点边值问题{x(4)(t)=f(t,x(t),x′(t),x″(t),x (t)),t∈[0,1] x(0)=x′(0)=0 x″(ξ)=x (1)=0,ξ∈[0,1] 解的存在性,其中f:[0,1]×R^4→R连续。
The existence of solutions for the nonlinear fourth-order three-point boundary value problem{x(4)(t)=f(t,x(t),x′(t),x″(t),x (t)),t∈[0,1] x(0)=x′(0)=0 x″(ξ)=x (1)=0,ξ∈[0,1] is studied in the paper under the barrier strips conditions by using a corollary of the Leray-Schauder theory, where f:[0,1]×R^4→R is continuous.