主讲人： 涂君武（上海科技大学） 副教授

主持人： 杜荣

开始时间：2018-10-18 14:00-15:00

讲座地址：闵行数学楼401报告厅

报告内容摘要：We compute the g = 1, n = 1 B-model Gromov-Witten invariant of an elliptic curve E directly from the derived category of coherent sheaves on E. More precisely, we carry out the computation of the categorical Gromov-Witten invariant defined by Costello using as target a cyclic A-infinity model due to Polishchuk. This is the first non-trivial computation of a positive genus categorical Gromov-Witten invariant, and the result agrees with the prediction of mirror symmetry: it matches the classical (non-categorical) Gromov-Witten invariants of a symplectic 2-torus computed by Dijkgraaf. (Joint work with Andrei Caldararu)

报告人简介：美国密苏里大学博士，在世界著名期刊  Transactions of the AMS，Mathematische Annalen，Advances in Mathematics，International Mathematics Research Notices，Compositio Mathematica等杂志上发表文章。