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05.31 题目:1.代数曲线及其应用 2.Vector rational and semi-rational rogue wave solutions in the coupled complex mKV equations

学术报告

 

时间地点:20195311515,教学楼A202

 

报告一:

 

题目:代数曲线及其应用

 

摘要:本报告给出了代数曲线在代数几何解方面的应用,又给出在信息安全方面的应用

 

报告人简介:夏铁成(上海大学教授、博士生导师)。主要从事可积系统;代数曲线与黎曼面上代数几何解;代数曲线与信息安全;数学机械化与符号计算等方面的研究。主持国家自然科学基金,省部级项目多项。是国家自然科学基金通讯评委。自2001年以来已培养研究生40余名,其中博士研究生13名。发表高水平论文150余篇,其中被SCI 检索110余篇。

 

 

报告二:

 

TitleVector rational and semi-rational rogue wave solutions in the coupled complex mKV equations

 

AbstractBy virtue of Darboux transformation, we derive a hierarchy of rogue wave solutions to the coupled complex mKdV equations. Based on modulation instability, two types of n-th order rational rogue wave solutions in compact determinant forms are presented. Especially, the rational rogue wave solutions up to the second-order are discussed explicitly and graphically. We find that there exists typical bright-dark composites and rogue wave doublets in first-order case and four or six fundamental rogue waves in second-order case. With appropriate choices of free parameters, the distribution shape with four fundamental rogue waves can be triangular, quadrilateral, and line structures. Furthermore, triangular, ring, quadrilateral and line patterns can emerge with six fundamental rogue waves. Moreover, we exhibit the first-order semi-rational rogue wave solutions which can demonstrate the coexistence of one rational rogue wave and one breather. Our results can be applicable to the study of rogue wave manifestations in nonlinear optics.

 

报告人简介:张翼(浙江师范大学教授、博士生导师)。浙江省151人才第二层次入选者。浙江省应用数学研究会副理事长。浙江师范大学动力系统与非线性研究中心主任、应用数学重点学科负责人。曾任浙江师范大学期刊社副社长、《浙江师范大学学报》(自然科学版)副主编、《中学教研(数学)》主编国家自然科学奖、上海、湖北等多个省市自然科学奖评审专家。主持和参加国家自然科学基金重点项目,面上项目多项。成果曾荣获浙江省科学技术一等奖(第二申报人);曾获浙江省人民政府优秀教学成果二等奖、浙江省高校科研成果一等奖。


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