报告人：周宇 博士生导师 （清华大学）

报告题目：Calabi-Yau-X categories of graded gentle algebras

报告摘要: We give a topological model for the finite dimensional derived category

of the Calabi-Yau-X completion of a graded gentle algebra, via a graded decorated

marked surface. We show a bijection between double graded closed arcs on the

surface and X-spherical objects in the category, and an equality between double

graded intersections between arcs and dimensions of double graded Homs between

the corresponding objects. As an application, we obtain a topological realization of

the Lagrangian immersion of the derived category of a graded gentle algebra.

报告时间：2020.12.16（周三） 上午9：00-10：00

腾讯会议ID：182646525

报告人简介：周宇，清华大学丘成桐数学中心副研究员、博士生导师。在清华大学获得学士、硕士、博士学位，先后访问德国比勒菲尔德大学、在挪威科技大学从事博士后研究。长期从事丛代数、从范畴和代数表示论方面的研究，目前在《Advance in Mathematics》、《Compositio Mathematica》、《Journal of London  Mathematical  Society》、《Journal of Algebra》等国际著名期刊发表论文10余篇。