报告人：张影教授（苏州大学数学科学学院）

时间：2020年7月23日，14:00-17:00

腾讯会议ID：938 487 658

报告一：同调论基础简介
摘要：我们在较短的时间内简要介绍奇异同调论的基本内容，特别是同调论的Eilenberg–Steenrod公理。适合于低年级研究生。

报告二：
题目：Finite topologies and p-group actions
摘要：Let T(n) denote the number of topologies that can be defined on a finite set of n points, and T0(n) that of T0-topologies. By constructing certain p-group actions on suitable subsets of topologies, we first obtain periodicity of T(n) and that of T0(n) modulo a prime power,
answering unsolved problems in the work of Borevich around 1980. We also obtain recursive relations for T0(n) and T(n) modulo a prime power. This is joint work with Xiangfei Li.

张影教授简介：博士生导师，现任苏州大学数学科学学院院长。