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Neumann边值问题变号解的存在性

Existence of sign-changing solutions with Neumann boundary value problem
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摘要 利用下降流不变集方法并结合变分技巧,讨论在Neumann边界条件下二阶非线性差分方程的多解性与变号解,获得正解、负解以及变号解存在的充分条件.最后通过例子说明所得定理的有效性. Making use of the method of invariant sets of descending flow in combination with variational method, we study the existence of multiple and sign-changing solutions for Neumann boundary value problem of a class of second-order nonlinear difference equations. Some sufficient conditions for the existence of positive solutions, negative solutions and sign-changing solutions are established. In addition, an example is given to verify the prac- tical effectiveness of our main theorem at length.
出处 《广州大学学报(自然科学版)》 CAS 2017年第6期17-25,共9页 Journal of Guangzhou University:Natural Science Edition
关键词 NEUMANN边值问题 差分方程 多解性 变号解 下降流不变集 Neumann boundary value problem difference equation multiple solution sing-changing solution invariant sets of descending flow
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