摘要
利用代数知识结合Guo-Krasnosel’skii不动点定理研究三阶非线性差分方程边值问题Δ3u(t-1)+f(t,u(t-1),u(t),u(t+1))=0,t∈Z(1,N),u(0)=0,u(N+2)=0多个正解存在的条件。
Making use of algebra theory and Guo - Krasnosel' skii fixed point theorem, the paper obtains the condition.s of the existence of more positive solutions of the boundary value problem of third -order nonlinear difference equation :△^3 u( t -1 ) +f( t, u(t- 1),u(t) ,u(t + 1)) =0,t ∈Z(1,N) ,u(0) =0,u(1) =0,u(N+2) =0.
出处
《湖南第一师范学报》
2007年第4期154-156,共3页
Journal of First Teachers College of Hunan
关键词
不动点理论
非线性差分方程
边值问题
正解
algebra theory
fixed point theorem
nonlinear difference equations
boundary value problem
positive solution