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er jie qi yi li san zhou qi bian zhi wen ti zheng jie de cun zai xing he duo jie xing
Pages: 345-351
Year: Issue:  4
Journal: Acta Scientiarum Naturalium Universitatis Neimongol

Keyword:  positive solutionexistencedifference equationfixed point theory;
Abstract: 运用锥上不动点理论研究二阶离散周期边值问题Δ2u(t-1)+a(t)u(t)=λg(t)f(u(t))+c(t),t∈[1,T]Z,u(0)=u(T),Δu(0)=Δu(T).得到了在非线性项f有奇性和无奇性时正解的存在性、多解性和不存在性.
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