报告题目：Wrong Use of Application of Perfect Square Expression

摘要：The purpose of this talk is to call attention to expressions of Philos-type criteria for the oscillation of solutions of a simple differential equation. A perfect square expression is used to obtain an evaluation that plays an essential role in the proof of Philos-type oscillation theorems. The required condition is pointed out when using the perfect square expression. To simplify the discussion, here we deal with two second-order linear differential equations, but its content is also applied to a variety of equations.

报告时间：2019年9月27日（周五）上午9:00

报告地点：新理学楼307学术报告厅

报告人：杉江实朗（Jitsuro Sugie） 教授

杉江实郎（Jitsuro Sugie） 教授，日本岛根大学総合理工学研究科教授。主要研究方向有常微分方程、动力系统、差分方程和生物数学等。在国际学术刊物上共发表学术论文110余篇。目前担任国际学术杂志Advances in Difference Equations和International Journal of Mathematics and Statistics的编委。

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