Moduli spaces and related topics in algebraic geometry

Description:Topics in algebraic stacks and how it relates to K-stability and other moduli notions. We plan to focus on topics including, but not limited to, foliations, algebraic stacks, K-stability and K-moduli, moduli theories and birational geometry. We plan for this seminar to be a supplement to the usual weekly algebraic geometry seminar, covering a broad range of topics in moduli theories...

报告人：Ruadhai Dervan (University of Warwick)

ADS seminar

Title: Unitarity constraints of four-dimensional conformal theories with 8 superchargesSpeaker: Madelena Lemos (Durham University)Venue: Zoom Meeting ID: 271 534 5558 Passcode: YMSCTime: 17:00-18:00, Jan 13, 2026 (Tuesday)Abstract: We review a construction of two-dimensional chiral algebras inside four-dimensional conformal theories with 8 or more supercharges. While the chiral algebra is not ...

报告人：Madelena Lemos (Durham University)

Foundations and Applications of AI

组织者 Organizer：包承龙报告人 Speaker: 贾晓红（中国科学院）时间 Time：12月31日10:00--11:00地点 Venue: 双清综合楼C654报告题目：CAD曲面求交和布尔运算前沿进展报告摘要：几何内核是CAD-CAE-CAM设计研发类工业软件的共同几何基座，曲面求交和布尔运算是几何内核中最重要的底层功能，相关算法的拓扑稳定性直接决定了一个CAD系统的稳定性。通过工业标准的NURBS样条曲面之间的裁剪-拼接构成的CAD模型通常具有水密性问题，其...

报告人：贾晓红， 梁希同

Geometry and Physics Seminar (GPS)

Time: Dec 30, 10:00-12:00Place: Teaching Building No.1, Room 102. TsinghuaTitle: Higher chiral algebras and free field realizationsSpeaker: Zhengping Gui (SIMIS and Fudan U.)Abstract: We use the Jouanolou model as a model for configuration spaces to construct higher-dimensional chiral algebras. In this model, chiral algebras can be studied as homotopy Lie algebras within a pseudotensor structu...

报告人：Zhengping Gui (SIMIS and Fudan U.)

G2T2 Seminar

The G2T2 (Geometry, Group Theory, Topology) seminar is a seminar run (predominantly) by postdocs and students, with (predominantly) postdoc and student speakers. The organisers (in alphabetical order) consist of: Yifei CAI 蔡逸飞, Xiao CHEN 陈啸, Diptaishik CHOUDHURY, Qiliang LUO 罗琪亮, Tuo SUN 孙拓, Ivan TELPUKHOVSKIY, and Daxun WANG 王大洵 (*). Upcoming talksThiago de Paiva (PKU)Title: Rigid...

报告人：Thiago de Paiva (PKU)