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孙春友教授学术报告会

信息来源:科学技术处发布日期: 2019-11-26浏览次数: 10

报告题目: Dynamics for a wave equation with sign changing damping

报 告 人: 孙春友(兰州大学,教授\博导)

报告时间: 20191128(周四)  9:00-10:00

报告地点: 磬苑校区数学科学学院H306

报告摘要:We consider the long-time dynamics generated by weakly damped wave equations in bounded 3D domains where the damping exponent depends explicitly on time and may change sign. It is shown that in the case when the non-linearity is superlinear, the considered equation remains dissipative if the weighted mean value of the dissipation rate remains positive and that the conditions of this type are not sufficient in the linear case.

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