报告人：王国芳（德国弗莱堡大学）

题目: The least index of harmonic maps from $S^{2n+1}$ into $CP^n$

摘要: A classical result of Urakawa tells us the index of the Hopf map from $S3$ into $S ^2$ is 4. Recently, T. Reviere obtained a rigidity result for harmonic maps from $S3$ into $S ^2$ with the least index 4. We refine his result and generalize all these results to higher dimensions. This is a joint work with Qun Chen and Mingwei Zhang.

时间：2026年8月31（星期一）上午10:00-11:00

地点：双清综合楼304