Existence of positive solutions for second order discrete periodic boundary value problems with sign-changing Green′s function(格林函数变号时二阶离散周期边值问题正解的存在性)

运用锥上的不动点指数理论，讨论了格林函数变号时的二阶离散周期边值问题当λb(t)≡1时，该问题存在正解；当b：[1，n]Z→R+时，该问题不存在正解，其中f∈C(R+，R+)，k为满足的常数，λ为参数，，R+：=[0，∞)。

Bibliographic Details
Main Authors:	HUWenfeng(胡文丰), WANGJingjing(王晶晶)
Format:	Article
Language:	zho
Published:	Zhejiang University Press 2022-11-01
Series:	Zhejiang Daxue xuebao. Lixue ban
Subjects:	周期边值问题正解变号格林函数不动点指数
Online Access:	https://doi.org/10.3785/j.issn.1008-9497.2022.06.004

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