报告时间：2022年7月6日（星期三）上午10-11点

腾讯会议号：676 705 895

报告摘要：In this talk, I will present a critical mass phenomenon in a 2D chemotaxis model with indirect signal production mechanism. The first result shows that for any suitably regular initial data, the system admits global classical solution, which is different from the classical Keller-Segel system with direct signal production mechanism. The second result confirms that for all radially symmetric initial data smaller than the critical value, the solutions are globally bounded, while for any initial mass larger than the critical value, unbounded global solutions can be constructed. This is a joint work with Dr Lan Yang.

报告人简介：向昭银，电子科技大学数学科学学院教授、博士生导师、副院长；2006年博士研究生毕业于四川大学；主要从事偏微分方程的研究，在Comm Partial Differential Equations、Cal Var & Partial Differential Equations、Int Math Res Not、J Functional Analysis、Math Z、Math Models & Methods Appl Sci等重要期刊上发表学术论文 60 余篇；主持国家自然科学基金、中国博士后科学基金、教育部留学回国人员科研启动基金等；入选四川省杰出青年学术技术带头人资助计划、四川省学术和技术带头人后备人选等。