演講者：陳憲揚博士

單　位：中央研究院數學研究所

日　期：2011年2月23日　PM 14:30

地　點：國立高雄大學理學院408室

講　題：Torus Equivariant Elliptic Cohomology and Rigidity Problem

摘　要：

In this talk, we briefly introduce the torus equivariant elliptic cohomology, which is a sheaf over (products of) complex elliptic curve. We also discuss Thom isomorphisms in this context. Then we show the existence of global sections of Thom spaces with respect to sigma orientations. Finally, we relate these to the rigidity problem of Witten.