报告人：王国芳（弗莱堡大学）

报告时间：2026年9月24日上午9:00-10:00

报告地点：六号楼C203

报告摘要：I will talk about the Dirac zero mode, which is important in physics. We give a sharp criterion of the presence of it, which resolve an open problem posed by Frank-Loss. Its proof is reduced to an improved Sobolev inequality under barycentre constraint, which has its now interest.