主讲专家:虞国富 (上海交通大学 教授)
报告时间:2025年9月8日(周一)14:40-17:40
报告地点:章辉楼442
联系人: 王海峰副教授
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报告摘要:In this talk, integrable discretization method based on the Hirota's bilinear approach and Miwa transformation is introduced. We present an integrable semi-discretization of the modified Camassa-Holm (mCH) equation with cubic nonlinearity. We demonstrate that the bilinear mCH equations and their determinant solutions can be derived from the discrete KP equation through Miwa transformation and some reductions. By scrutinizing the reduction process, we obtain a set of semi-discrete bilinear equations and their general soliton solutions in the Gram-type determinant form. We obtain an integrable semi-discrete analog of the mCH equation by introducing dependent variables and discrete reciprocal transformation.
专家介绍: 虞国富,上海交通大学数学科学学院教授、博士生导师、副院长。2007年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,香港科技大学访问学者。主要从事可积系统、随机矩阵、正交多项式、特殊函数等方面的研究。在数学物理领域知名学术刊物Adv.Math., Ann. Henri Poincaré,Nonlinearity, JNS等发表SCI论文70余篇。主持国家自然科学基金、上海市东方英才拔尖项目、上海交通大学晨星青年学者奖励计划等多项研究课题。