Differential Geometry Seminar | Infinitude of Hamiltonian periodic orbits and GLSM

Abstract： Take an irrational rotation of the two-sphere; it only has the north and south poles as its periodic points. However, Franks proved that for any area-preserving diffeomorphism

“书院杯” | 决赛重磅来袭！

The six-vertex model on random graphs | Integrable System Lunch Seminar

Abstract I will explain how to reformulate the 6v model on dynamical random lattices as an NxN matrixmodel. The spectral curve of the 6v matrix model at large N is an infinite envelope

Electromagnetic and gravitational Hopfions | BIMSA General Relativity Seminar

Abstract Hopfions are a family of `solitonary solutions of the N-spin field with a non-trivial topologicalstructure related to Hopf fibration. During the talk, l wil focus on electromagnetic an

Some long time existence and convergence results on hypersymplectic flow | BIMSA Differential

Abstract Hypersymplectic structure on a 4-manifold is a triple of symplectic forms such that any nontriviallinear combination of them is symplectic. The hypersymplectic flow is a natural geometric

De Rham F-gauges and Shimura varieties | BIMSA-YMsC Tsinghua Number Theory Seminar

Abstract We will talk about the notion of de Rham F-gauges, which are roughly enhanced coefficientobjects for de Rham cohomology of smooth algebraic varieties in characteristic p. More preciselythe...

BIMSA Member Seminar- Babak Haghighat | Topological Defect Lines and TQFTs

Speaker Intro Associate Professor, research interests are string theory, quantum field theory and topological field theory. Member Seminar Intro The BIMSA member seminar is a weekly event during

经管学术系列讲座NO.8 | 宏观经济政策沟通的预期管理效应 ——来自宏观分析师报告文本的证据

Abstract 本文研究了宏观经济政策沟通和市场专业人士预期形成之间的因果关系。使用LDA模型分别构建2015年1月-2023年6月国务院新闻发布会和宏观分析师报告文本的日度主题分布指标及日度主体情感指标，发现宏观经济...

YMSC Topology Seminar | Braids in planar open books and fillable surgeries

Abstract： We'll give a useful description of braids in #_𝑛(𝑆^1×𝑆^2) using surgery diagrams, which will allow us to address knots in some lens spaces that admit fillable positive contact s...

MCM-YMSC p-adic Geometry Learning Seminar | Fourier transform preserves cohomological rigidity II

Fourier transform preserves cohomological rigidity II