Some Abstract Critical Point Theorems and Applications in Wave Equations

期刊论文
发表日期：

2024年6月30日

查看全文

Jiayang Li,
Qi Wang,
Li Wu

摘要

With the index defined in [J. Differential Equations, 2016, 260(4): 3749–3784] and [Front. Math., 2023, 18(3): 731–742], we get some critical point theorems for abstract operator equation without compactness assumption. As applications, we consider the periodic solutions of wave equations.