Speaker: Yang Tonghai (University of Wisconsin, Madison) Title: Special endomorphisms of Abelian surfaces. Abstract: In this talk, we will discuss the special endomorphisms of abelian surfaces and in particular those with complex multiplications (CM). When an Abelian surfaces has CM, the space of the special endomorphisms has extra module structure. We will discuss this structure and its relation with derivative of Eisenstein series on a real quadratic field. This is part of a joint work with Ben Howard.
Time: 2010 July 2 Friday, 3:10pm-4:10pm
Speaker: 陈见柯 (首师大硕士生) Title:On Canonical Homomorphisms of Tensor Sheaves Abstract:Working on a free $R-$module $M$ of finite rank, using the idea of moduli space we get a formula on determinant. Then we study canonical decompositions of tensor modules and we get some results. But unfortunately we just give canonical homomorphisms for general results and we cannot get more general decompositions. Finally we study canonical complex of tensor modules, the condition of exactness and split condition.
Time: 2010 July 2 Friday, 4:20pm-5:20pm
Classroom: Dept. Math of CNU, Room 312 (北京西三环花园桥往南首师大校本部东门进去右手第一座楼)