报告题目： Exact multiplicity and stability of $T$-periodic solutions for a class of second order differential equation
报告人： 梁树青  Jilin University
时间：10月28日（周三） 4:30-5:30
地点：管研楼1518
报告摘要： The problem of $T$-periodic solutions of second order differential  equation is familiar to us. We show a general class of nonlinearity for the exact multiplicity and stability of $T$-periodic solutions of a class of second order differential equation. The proof is based on connections between degree theory and local index of periodic solutions, and eigenvalues of Hill's equation.

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