Using topological degree theory with a partially ordered structure of space, sufficient conditions for the existence and multiplicity of positive solutions for a second-order nonlinear periodic boundary-value problem are established. Inspired by ideas in Guo and Lakshmikantham [ 6], we study the dependence of positive periodic solutions as a parameter approaches infinity, lim(lambda ->+infinity) parallel to x(lambda)parallel to = +infinity, or lim(lambda ->+infinity) parallel to x(lambda)parallel to = 0.
机构:
School of Statistics and Applied Mathematics, Anhui University of Finance and Economics, BengbuSchool of Statistics and Applied Mathematics, Anhui University of Finance and Economics, Bengbu
Zhu H.
Li S.
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机构:
College of Information Sciences and Technology, Hainan University, HaikouSchool of Statistics and Applied Mathematics, Anhui University of Finance and Economics, Bengbu