应兰州交通大学数学系杨赟瑞教授邀请,广州大学郭志明教授将于2022年4月29-30日与我系相关师生进行线上学术研讨,并于4月30日举行线上学术报告,欢迎各位老师和研究生同学参加。
报告题目:Travelling waves solutions for delayed temporally discrete non-local reaction-diffusion equation
报告摘要:In this talk, we are concerned with the existence of traveling wave solutions to a delayed temporally discrete non-local reaction diffusion equation model, which has been derived recently for a single species with age structure. When the birth function satisfies monotonic condition, we obtained the traveling wavefront by using upper and lower solution methods together with monotonic iteration techniques. Otherwise, without the monotonicity assumption for birth function, we constructed two auxiliary equations. By means of the traveling wavefronts of the auxiliary equations, using the Schauder’s fixed point theorem, we proved the existence of a travelling wave solution to the equation under consideration with speed c > c∗, where c∗> 0 is some constant. We found that the delayed temporally discrete non-local reaction diffusion equation possesses the dynamical consistency with its time continuous counterpart at least in the sense of the existence of traveling wave solutions.
时间:4月30日10:00-11:00
地点:腾讯会议160967099(密码04301)
专家简介:
郭志明,广州大学数学与信息科学学院教授、博士生导师。2001年博士毕业于中山大学,2009年在加拿大西安大略大学访问一年。多年来一直从事离散系统、泛函微分方程及生物数学模型的理论与应用研究,在《Journal of Differential Equations》、《Journal of London Mathematical Society》、《Journal of Dynamics and Differential Equations》、《Journal of Mathematical Biology》、《中国科学》等国际国内重要刊物上发表论文70多篇,其中SCI收录50多篇。先后主持国家自然科学基金面上项目3项、参加国家自然科学基金重点项目1项。
“天佑数学讲坛”由beat365下载唯一官方网发起创办,是数理学院数学系高层次常态化的学术交流平台。讲坛将不定期邀请国内外知名学者围绕数学国际前沿动态展开学术交流与探讨,通过学术报告、小型研讨会等形式为数学系师生提供向国内外知名学者学习的机会,以便能够及时准确地了解数学领域的前沿学术信息,进一步提升数学系师生的学术视野及科研水平。
数理学院
2022年4月24日