Organizing Committee
 Huijun Fan (SMS PKU)
symplectic geometry and mathematical physics, geometric analysis  Sergey Gorchinskiy (MI RAS)
algebra and geometry: algebraic geometry, Ktheory  Hailiang Li (SMS CNU)
fluid mechanics, partial differential equations, analysis  Jinsong Liu (AMSS)
algebraic geometry: singularity theory  Yi Liu (BICMR)
Topology of 3manifolds, hyperbolic geometry  Denis Osipov (MI RAS)
algebraic geometry, number theory, integrable system  Ye Tian (UCAS, AMSS)
Number Theory, Arithmetic Geometry, Iwasawa Theory  Alexey Tuzhilin (MSU)
geometry: Riemannian and metric geometry  Yue Yang (CE PKU)
computation mathematics and mechanics  Ping Zhang (AMSS)
P. D. E.: fluid equation and semiclassical analysis  Alexander Zheglov (MSU)
geometry: algebraic geometry, integrable system
PROGRAM
11:00 (GMT+3)
Jun Yu Peking University 

Bio: Jun Yu obtained PhD from ETH Zurich in 2012, and then did postdoc in IAS Princeton and MIT. He is now an associate professor in Peking University. His research field is representation theory of Lie groups. 
Dimension datum of a subgroup.
The dimension datum problem asks for the determination of a closed subgroup in a given compact Lie group from its dimension datum, which is a spectral invariant of the subgroup. In this talk we present our series of works on the dimension datum problem.
12:00 (GMT+3)
Mariya Grechkoseeva Sobolev Institute of Mathematics SB RAS 

Bio: Mariya Grechkoseeva works at the Sobolev Institute of Mathematics, Novosibirsk. She is a Doctor of PhysicsMathematics Sciences (Russian analogue of habilitation) and a head of the laboratory of algebra. 
Element orders and the structure of a finite group.
To every finite group G, we can assign the set $\omega(G)$ consisting of all positive integers arising as element orders of G (so, for example, \(\omega(A_5)=\{1,2,3,5\}\)). It is a natural question to ask what we can say about the structure of G given some properties of $\omega(G)$. Within this framework, I will discuss a more narrow question of to what extent \(\omega(G)\) determines G provided that G is a finite nonabelian simple group.
The meeting will be held in the form of a webinar on the Voov platform.
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