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--- 分析与偏微分方程讨论班(2021秋季第11讲)
题目: Role of sub-logistic source in chemotaxis-only, chemotaxis-haptotaxis and chemotaxis-fluid models
报告人: 向田(中国人民大学)
时间:2021-12-16 14:00-15:00 (周四下午)
地点: 腾讯会议 ID:967-450-456
会议链接:https://meeting.tencent.com/dm/fuqPMrECciiY
摘要:In this talk, we illustrate the role of sub-logistic source in 2D minimal chemotaxis-only, chemotaxis-haptotaxis and chemotaxis-fluid models: our boundedness improves known “blow-up prevention by logistic source” to “blow-up prevention by sub-logistic source” in respective cases, indicating standard logistic source is not the weakest damping source, and, our stability improves known algebraic convergence under quadratic degradation to exponential convergence under log-correction of quadratic degradation, implying log-correction of quadratic degradation quickens the decay of bounded solutions. Our findings show certain negligiblity of haptotaxis or fluid interaction on chemotaxis in 2D.
报告人简介: 向田,2014年5月博士毕业于美国杜兰大学(Tulane University),偏微分方程专业,现为人民大学数学科学研究院副教授,博士生导师。在MMMAS, CVPDE, SIAP, JDE, Non-linearity, JNS等杂志上发表三十余篇论文,被引300余次,研究曾获博士后基金,国家自然科学基金青年以及面上基金的资助。