Speaker：Professor Fei Han (National University of Singapore)
Schedule： Sat.19:00-21:00, 2021-12-4/11
Venue：Tencent Meeting ID: 607 3894 1091
The cobordism invariants, genera, play fundamental roles in manifold topology. Some specific genera, like A-hat genus, L-genus, Witten genus and elliptic genus are the topological pillars of the Atiyah-Singer index theory, spin geometry and string geometry. In this minicourse, we will give a brief introduction to genera starting from very basic knowledge and introduce some applications of genera in physics in particular anomaly cancellation problem, and in geometry concerning group actions and curvatures.