08
2021-06
Homological properties of some noncommutative products of Algebras
报告人：吴泉水（复旦大学教授）时间：2021年6月8日10:30-11:30地点：玉泉校区逸夫工商管理楼200-9室摘要：Algebras are supposed to describe spaces as functions. As tensor products of algebras corresponding to the usual products for spaces, some noncommutative constructions of algebras are viewed as the functions of the imaginary noncommutative products of spaces. We try to study the regularity or Gorens...
08
2021-06
Examples of non-semisimple Hopf algebra actions on Artin-Schelter regular algebras
报告人：王顶国（曲阜师范大学教授）时间：2021年6月8日9:30-10:30地点：玉泉校区逸夫工商管理楼200-9室摘要：Let k be a base field of characteristic p>0 and let U be the restricted enveloping algebra of a 2-dimensional nonabelian restricted Lie algebra. We classify all inner-faithful U-actions on noetherian Koszul Artin-Schelter regular algebras of global dimension up to three, this is a joint wo...
04
2021-06
Uniqueness and stability of traveling waves to the time-like extremal hypersurface in Minkowski space
报告人：周忆（复旦大学）时间：2021年6月4日（星期五）下午15:40-16:25地点：工商楼412教室摘要：There are a few results about the global stability of nontrivial solutions to quasilinear wave equations. In this paper we are concerned with the uniqueness and stability of traveling wave to the time-like extremal hypersurface in Minkowski space.Firstly, we can get the existence and uniqueness of traveling...
25
2021-05
Falconer's distance set problem
报告人：Xiumin Du (Northwestern University)时间：2021年5月25日 （星期二）上午9:00-10:00地点：腾讯会议（会议ID：130 921 098 会议密码：310027）链接:https://meeting.tencent.com/s/bKSKrCPeByhx摘要： A classical question in geometric measure theory, introduced by Falconer in the 80s is, how large does the Hausdorff dimension of a compact subset in Euclidean space need to be to en...
18
2021-05
Quasifinite representations of the Virasoro-like algebra
报告人：苏育才（同济大学数学研究所所长）时间：2021年5月18日（周二）15:30-16:30地点：玉泉校区工商楼200-9摘要:The Virasoro-like algebra, a natural generalization of the well-known Virasoro algebra, is a Lie algebra closely related to Block type or Cartan type Lie algebras. In this talk, we present some results on Quasifinite representations of the Virasoro-like algebra. 联系人：吴志祥（wzx@zju....
14
2021-05
Full stable trace formula for the group Mp(2n)
报告人：李文威（北京国际数学研究中心）时间：2021年5月14（周五）15:20-16:20地点：玉泉校区邵逸夫科学馆211摘要: The metaplectic covering Mp(2n) of Sp(2n) plays a pivotal role in various aspects of representation theory and arithmetics. In order to harness the full power of Arthur's methods in this setting, we need a stable trace formula for Mp(2n). Thus far, only the elliptic terms have been stab...
12
2021-05
Quiver with potentials for generalized cluster algebras from orbifolds
报告人：Dr. Lang Mou（牟浪 博士）（University of Leicester, UK）时间： 2021.5.12（周三），16:00-17:00地点：玉泉校区欧阳楼316Abstract: To a marked bordered surface with orbifold points of order 3, we associated a quiver (with loops) with potential. We then connect the cluster structure of the corresponding skew-symmetrizable matrix with the stability conditions and the \tau-tiliting theor...
12
2021-05
A universal method for solving elliptic PDEs with singular boundary data on non-smooth domains
Speaker: Prof.Shidong Jiang New Jersey Institute of Technology, USAAbstract: A numerical scheme is presented for the solution of Fredholm second-kind boundary integral equations with right-hand sides that are singular at a finite set of boundary points. The boundaries themselves may be non-smooth. The scheme, which builds on recursively compressed inverse preconditioning (RCIP), ...