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)
HUWenfeng(胡文丰), WANGJingjing(王晶晶)
Published in Zhejiang da xue xue bao. Journal of Zhejiang University. Sciences edition. Li xue ban (01.11.2022)
Published in Zhejiang da xue xue bao. Journal of Zhejiang University. Sciences edition. Li xue ban (01.11.2022)
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