上海交通大学虞国富教授学术报告

发布者:张栋邦发布时间:2018-11-15浏览次数:1873

报告题目:广义Sine-Gordon方程的可积半离散化

Integrable semi-discretization for a generalized sine-Gordonequation

报告时间:201811月20日10:30-11:30

报告地点:bat365在线平台二楼会议室

报告人:虞国富教授


报告人简介:虞国富教授,20076月博士毕业于中国科学院数学与系统科学研究院; 加拿大蒙特利尔大学博士后。现为上海交通大学数学科学学院教授、博士生导师。主要从事孤立子与可积系统、特殊函数、正交多项式方面的研究。在国外重要学术刊物上发表SCI论文30余篇。主持国家自然科学基金、上海市晨光计划、上海交通大学晨星青年学者奖励计划等多项研究课题。应邀多次访问香港科技大学、香港浸会大学。


报告摘要:

In this talk, two integrable and one non-integrable semi-discrete analoguesof a generalized sine-Gordon (sG) equation are constructed. The key of theconstruction is the bilinear forms and determinant structure of solutions ofthe generalized sG equation. We also construct N-soliton solutions for the semi-discrete analogues of the generalized sGequation in the form of Casorati determinant. In the continuous limit, we show that the semi-discrete generalized sG equations converge to the continuousgeneralized sG equation. Numerical simulation is conducted by use of the resulted semi-discreteschemes. The work is collaborated with Bao-Feng Feng.

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