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Joint Mathematical seminar of Saint Petersburg State University and Peking University
online, St. Petersburg

The Beijing-Saint Petersburg Mathematics Colloquium is organised within the collaboration program between Saint Petersburg State University and Peking University. Its main objective is boosting the awareness of the scientists of both sides with works performed in the partner university with the perspective of joint research and exchange programs.

The sessions usually take place once a fortnight with two 1-hour talks being presented (one from Chinese and one from Russian side). The current format of talks is online, the possibility to convert it to the mixed format in the future is discussed.

In addition, the information of talks appears at https://chebyshev.spbu.ru/schedule/

E-mail:
Website: https://www.srmc.pku.edu.cn/xzyj/kylt/153240.htm

Seminar organizers
Fan Huijun
Kryzhevich Sergey Gennad'evich

Institutions
Saint Petersburg State University
Peking University, Beijing


Joint Mathematical seminar of Saint Petersburg State University and Peking University, St. Petersburg

November 28, 2024 (Thu)
1. Some results on the constrained variational problem
W. Zou
November 28, 2024 15:00, St. Petersburg, online
2. Statistical estimation theory using perturbed optimization
V. G. Spokoiny
November 28, 2024 16:00, St. Petersburg, online

November 14, 2024 (Thu)
3. Commutator type and Levi type of a system of CR vector fields
Wanke Yin
November 14, 2024 15:00, St. Petersburg, online
4. Real-Valued Spacetime Dimensions, Black Hole Dualities, and the Riemann Zeta Function
I. Ya. Aref'eva
November 14, 2024 16:00, St. Petersburg, online

October 31, 2024 (Thu)
5. Polynomial formulations as a barrier for reduction-based hardness proofs
A. S. Kulikov
October 31, 2024 15:00, St. Petersburg, online
6. The Picard group of moduli spaces of K3 surfaces and their compactifications
Zhiyuan Li
October 31, 2024 16:00, St. Petersburg, online

June 6, 2024 (Thu)
7. Post-groups, post-groupoids and the Yang-Baxter equation
Yu. Sheng
June 6, 2024 15:00, St. Petersburg, online
8. Some classification problems and orbits of algebraic groups
V. L. Popov
June 6, 2024 16:00, St. Petersburg, online

May 23, 2024 (Thu)
9. Contact $+1$ surgeries and vanishing of contact homology
Zhengyi Zhou
May 23, 2024 15:00, St. Petersburg, online
10. The Chern–Dold character and the Milnor–Hirzebruch problem
V. M. Bukhshtaber
May 23, 2024 16:00, St. Petersburg, online

May 16, 2024 (Thu)
11. On the hydrostatic approximation of the 3D Boussinesq equations of damped wave type
Weixi Li
May 16, 2024 15:00, St. Petersburg, online
12. On equations of integrable billiard tables
A. E. Mironov
May 16, 2024 16:00, St. Petersburg, online

April 25, 2024 (Thu)
13. Estimates of the proximity of successive convolutions of the probability distributions on the convex sets and in the Prokhorov distance
A. Yu. Zaitsev
April 25, 2024 15:00, St. Petersburg, online
14. Bohr chaoticity and Khintchin conjecture
Aihua Fan
April 25, 2024 16:00, St. Petersburg, online

April 11, 2024 (Thu)
15. Jacobian determinants for nonlinear gradient of planar $\infty$-harmonic functions and applications
Yuan Zhou
April 11, 2024 15:00, St. Petersburg, online
16. Solid mechanics models in ophthalmology
E. B. Voronkova
April 11, 2024 16:00, St. Petersburg, online

March 28, 2024 (Thu)
17. Compactness of asymptotically hyperbolic Einstein manifolds in dimension 4 and applications
Yuxin Ge
March 28, 2024 15:00, St. Petersburg, online
18. Birational geometry of del Pezzo surfaces
C. A. Shramov
March 28, 2024 16:00, St. Petersburg, online

March 14, 2024 (Thu)
19. Andronov School of Nonlinear Oscillations
O. V. Pochinka
March 14, 2024 15:00, St. Petersburg, online
20. Geometric interpretation for Navier-Stokes equations
Sh. Fang
March 14, 2024 16:00, St. Petersburg, online

February 29, 2024 (Thu)
21. Hodge-Riemann relations for Schur classes
W. Zheng
February 29, 2024 15:00, St. Petersburg, online
22. Contou-Carrere symbols and Riemann-Roch theorems
D. V. Osipov
February 29, 2024 16:00, St. Petersburg, online

January 18, 2024 (Thu)
23. A geometric perspective on the compressible Euler equations
Pin Yu
January 18, 2024 15:00, St. Petersburg, online
24. Bourgain—Brezis inequalities and related topics
D. M. Stolyarov
January 18, 2024 16:00, St. Petersburg, online

January 4, 2024 (Thu)
25. Multiple SLEs and Dyson Brownian motion
Hao Wu
January 4, 2024 15:00, St. Petersburg, online
26. Generative Flow Networks as Entropy-Regularized Reinforcement learning
A. A. Naumov
January 4, 2024 16:00, St. Petersburg, online

December 21, 2023 (Thu)
27. Infinitesimal extension of adjoint forms in Kähler setting and log injectivity theorem
Junyan Cao
December 21, 2023 15:00, St. Petersburg, online
28. Minimal triangulations of manifolds like projective planes, and their symmetry groups
A. A. Gaifullin
December 21, 2023 16:00, St. Petersburg, online

December 7, 2023 (Thu)
29. Axial algebras of Jordan type
I. B. Gorshkov
December 7, 2023 15:00, St. Petersburg, online
30. Cluster Algebras and Higher Structures
F. Qin
December 7, 2023 16:00, St. Petersburg, online

November 9, 2023 (Thu)
31. Random Horseshoe of Anosov systems driven by a quasi-periodic forcing
Lian Zeng
November 9, 2023 15:00, St. Petersburg, online
32. A fresh look at the shadowing of pseudo-trajectories
M. L. Blank
November 9, 2023 16:00, St. Petersburg, online

October 26, 2023 (Thu)
33. Two dimensional percolation and Liouville quantum gravity
Xin Sun
October 26, 2023 15:00, St. Petersburg, online
34. Nonequilibrium flow modelling: from weak perturbations towards extremal deviations from equilibrium
E. V. Kustova
October 26, 2023 16:00, St. Petersburg, online

October 12, 2023 (Thu)
35. RC-positivity and the geometry of compact complex manifolds
Xiaokui Yang
October 12, 2023 15:00, St. Petersburg, online
36. Geometry of Gromov-Hausdorff Distance: State of the Art
A. A. Tuzhilin
October 12, 2023 16:00, St. Petersburg, online

June 22, 2023 (Thu)
37. Full horseshoe for the Galerkin truncations of 2D Navier-Stokes equations with degenerate stochastic forcing
W. Huang
June 22, 2023 15:00, St. Petersburg, online
38. Review of the behaviour of a model of type many predators - one prey
G. J. Söderbacka
June 22, 2023 16:00, St. Petersburg, online

May 25, 2023 (Thu)
39. Stein's Method: A New Perspective on Normal and Non-normal Approximation
Q. M. Shao
May 25, 2023 15:00, St. Petersburg, online
40. On the properties of weak solutions to elliptic equations with a drift term
T. N. Shilkin
May 25, 2023 16:00, St. Petersburg, online

May 11, 2023 (Thu)
41. On superintegrability
N. Yu. Reshetikhin
May 11, 2023 15:00, St. Petersburg, online
42. Geometric methods to solving Schläfli differential equations
A. D. Mednykh
May 11, 2023 16:00, St. Petersburg, online

April 27, 2023 (Thu)
43. On Banach's isometric subspace problem
S. V. Ivanov
April 27, 2023 15:00, St. Petersburg, online
44. Coherent sheaves, superconnection, and the Riemann-Roch-Grothendieck formula
Shu Shen
April 27, 2023 16:00, St. Petersburg, online

April 13, 2023 (Thu)
45. Exponential sums, differential equations and geometric Langlands correspondence
Daxin Xu
April 13, 2023 15:00, St. Petersburg, online
46. Morava $K(2)$-motives and the Rost invariant
V. A. Petrov
April 13, 2023 16:00, St. Petersburg, online

March 30, 2023 (Thu)
47. On The Existence of Multi-dimensional Compressible MHD Contact Discontinuities
Zhouping Xin
March 30, 2023 15:00, St. Petersburg, online
48. Systems of Fractional Partial Differential Equations
M. O. Mamchuev
March 30, 2023 16:00, St. Petersburg, online

March 16, 2023 (Thu)
49. Second order fractional mean-field SDEs with singular kernels and measure initial data
Xicheng Zhang
March 16, 2023 15:00, St. Petersburg, online
50. The theory of hidden oscillations and stability of dynamical systems
N. Kuznetsov
March 16, 2023 16:00, St. Petersburg, online

March 2, 2023 (Thu)
51. Tropical objects in sandpiles
N. Kalinin
March 2, 2023 15:00, St. Petersburg, online
52. Collapsed spaces with Ricci local bounded covering geometry
X. Rong
March 2, 2023 16:00, St. Petersburg, online

December 29, 2022 (Thu)
53. The Instability Index Formula. Application to the Sobolev problem on a rotating top filled with a viscous fluid
A. A. Shkalikov
December 29, 2022 15:00, St. Petersburg, online
54. Nonlinear Partial Differential Equations of Mixed Type: Analysis and Connections
Gui-Qiang G. Chen
December 29, 2022 16:00, St. Petersburg, online

December 15, 2022 (Thu)
55. Szegö measures and vibration of Krein strings
R. V. Bessonov
December 15, 2022 15:00, St. Petersburg, online
56. Global axisymmetric Euler flow with rotation
Yan Guo
December 15, 2022 16:00, St. Petersburg, online

December 8, 2022 (Thu)
57. Billiards in polygons, flat surfaces, and dynamics in moduli spaces
A. V. Zorich
December 8, 2022 15:00, St. Petersburg, online
58. Dynamics of non-ergodic foliations, Poincare sections and best approximations
Yitwah Cheung
December 8, 2022 16:00, St. Petersburg, online

December 1, 2022 (Thu)
59. On rationally integrable planar dual and projective billiards
A. A. Glutsyuk
December 1, 2022 15:00, St. Petersburg, online
60. Dirac operator and positive scalar curvature
G. Yu
December 1, 2022 16:00, St. Petersburg, online

November 17, 2022 (Thu)
61. Brownian chain break and some exit problems
M. A. Lifshits
November 17, 2022 15:00, St. Petersburg, online
62. The random series-parallel graph
Zh. Shi
November 17, 2022 16:00, St. Petersburg, online

November 10, 2022 (Thu)
63. On the structure and statistics of the set of classical knots
A. V. Malyutin
November 10, 2022 15:00, St. Petersburg, online
64. Taut foliations of 3-manifolds with Heegaard genus two
Tao Li
November 10, 2022 16:00, St. Petersburg, online

October 20, 2022 (Thu)
65. Singular Weyl's law with Ricci curvature bounded below
X. Dai
October 20, 2022 15:00, St. Petersburg, online
66. Formation of singularities of 2D soliton equations represented by $L,A,B$-triples
I. A. Taimanov
October 20, 2022 16:00, St. Petersburg, online

October 6, 2022 (Thu)
67. Aspects of the Bogomolov conjectures
Xinyi Yuan
October 6, 2022 15:00, St. Petersburg, online
68. On a conjecture due to J.-L. Colliot-Thelene
I. A. Panin
October 6, 2022 16:00, St. Petersburg, online

September 22, 2022 (Thu)
69. The pro-Chern-Schwarz-MacPherson class in Borel-Moore motivic homology
Fangzhou Jin
September 22, 2022 15:00, St. Petersburg, online
70. Triangulated categories, weight structures, and weight complexes
M. V. Bondarko
September 22, 2022 16:00, St. Petersburg, online

June 16, 2022 (Thu)
71. Bounded elementary generation of Chevalley groups
N. A. Vavilov
June 16, 2022 15:00, St. Petersburg, online
72. Arakelov geometry over adelic curves
Huayi Chen
June 16, 2022 16:00, St. Petersburg, online

June 2, 2022 (Thu)
73. On a geometric realization of the center of the small quantum group
P. Shan
June 2, 2022 15:00, St. Petersburg, online
74. Chevalley groups over rings of polynomials
A. K. Stavrova
June 2, 2022 16:00, St. Petersburg, online

May 26, 2022 (Thu)
75. The non-positive curvature geometry of some fundamental groups of complex hyperplane arrangement complements
Jingyin Huang
May 26, 2022 15:00, St. Petersburg, online
76. Combinatorics of Lipschitz polytope and beyond
F. V. Petrov
May 26, 2022 16:00, St. Petersburg, online

May 19, 2022 (Thu)
77. A violation of the uncertainty principle: indicator functions with thin spectrum and uniformly bounded partial Fourier integrals
S. V. Kislyakov
May 19, 2022 15:00, St. Petersburg, online
78. Critical Point Sets of Solutions in Elliptic Homogenization
Fanghua Lin
May 19, 2022 16:00, St. Petersburg, online

May 5, 2022 (Thu)
79. Analysis on compressible Navier-Stokes equations with strong boundary layer
Tong Yang
May 5, 2022 15:00, St. Petersburg, online
80. Large bifurcation supports
Yu. S. Ilyashenko
May 5, 2022 16:00, St. Petersburg, online

April 7, 2022 (Thu)
81. Extending periodic maps on surfaces over the 4-sphere
Sh. Wang
April 7, 2022 15:00, St. Petersburg, online
82. A Mozaic from Geometry, Dynamics, PDEs, and maybe more
D. Yu. Burago
April 7, 2022 16:00, St. Petersburg, online

March 24, 2022 (Thu)
83. On Lyapunov exponents of quasi-periodic cocycles
J. You
March 24, 2022 15:00, St. Petersburg, online
84. Systems of isometries: dynamics and topology
A. S. Skripchenko
March 24, 2022 16:00, St. Petersburg, online

March 8, 2022 (Tue)
85. Sharp asymptotics for arm events in critical planar percolation
Xinyi Li
March 8, 2022 15:00, St. Petersburg, online
86. On the number of level sets of smooth Gaussian fields
Dmitry Belyaev
March 8, 2022 16:00, St. Petersburg, online

December 16, 2021 (Thu)
87. Random distances of Liouville quantum gravity: recent and very recent progresses
Jian Ding
December 16, 2021 15:00, St. Petersburg, online
88. Random section and random simplex inequality
D. Zaporozhets
December 16, 2021 16:00, St. Petersburg, online

December 2, 2021 (Thu)
89. Gabor analysis for rational functions
Yu. S. Belov
December 2, 2021 15:00, St. Petersburg, online
90. Planar Sobolev extension domains and quasiconformal mappings
Yi Zhang
December 2, 2021 16:00, St. Petersburg, online

November 18, 2021 (Thu)
91. Symmetry Results in Two-Dimensional Inequalities for Aharonov–Bohm Magnetic Fields
A. Laptev
November 18, 2021 15:00, St. Petersburg, online
92. Microscopic conservation laws for the derivative nonlinear Schrodinger equation
Guixiang Xu
November 18, 2021 16:00, St. Petersburg, online

November 4, 2021 (Thu)
93. The main cubioid and the modulus of renormalization
V. A. Timorin
November 4, 2021 15:00, St. Petersburg, online
94. Kahler manifolds with quasi-negative k-Ricci curvature
Jianchun Chu
November 4, 2021 16:00, St. Petersburg, online

October 21, 2021 (Thu)
95. Multiplication Between (Local) Hardy Spaces and Their Dual Spaces
Yang Dachun
October 21, 2021 15:00, St. Petersburg, online
96. Elementwise sub-representations of groups, and their automorphic analogue
Dipendra Prasad
October 21, 2021 16:00, St. Petersburg, online

October 7, 2021 (Thu)
97. Norm-resolvent convergence to zero-range models with internal structure in models with strong inhomogeneities
A. V. Kiselev
October 7, 2021 14:00, St. Petersburg, online
98. Spectrum Analysis for the Vlasov-Poisson-Boltzmann System
Zhong Mingying
October 7, 2021 15:00, St. Petersburg, online

June 3, 2021 (Thu)
99. Nevanlinna factorization in classes of analytic functions smooth up to the boundary
N. A. Shirokov
June 3, 2021 15:00, St. Petersburg, online
100. Factoring Quasiconformal & quasisymmetric mappings
J. Liu
June 3, 2021 16:00, St. Petersburg, online

May 20, 2021 (Thu)
101. Fractional Calculus for m-accretive Operators
M. V. Kukushkin
May 20, 2021 15:00, St. Petersburg, online
102. Cohn-Vossen inequality on certain noncompact Kahler manifolds
Gang Liu
May 20, 2021 16:00, St. Petersburg, online

May 13, 2021 (Thu)
103. Newton’s aerodynamic problem: an overview of recent results and open questions
A. Yu. Plakhov
May 13, 2021 15:00, St. Petersburg, online
104. Distributed and Secure Algorithm for Dominant SVD
Xin Liu
May 13, 2021 16:00, St. Petersburg, online

April 22, 2021 (Thu)
105. Point processes and interpolation
A. I. Bufetov
April 22, 2021 10:00, St. Petersburg, online
106. Differential Network Analysis via Lasso Penalized D-Trace Loss
Ruibin Xi
April 22, 2021 11:00, St. Petersburg, online

April 8, 2021 (Thu)
107. Transcendence Theory over Function Fields on Quotients of Bounded Symmetric Domains
Ngaiming Mok
April 8, 2021 15:00, St. Petersburg, online
108. A New Life of the Old Sieve
Yu. V. Matiyasevich
April 8, 2021 16:00, St. Petersburg, online

March 25, 2021 (Thu)
109. Polynomial complexity and Sarnak conjecture
W. Huang
March 25, 2021 15:00, St. Petersburg, online
110. Dynamical models of some sociological problems
S. Yu. Pilyugin
March 25, 2021 16:00, St. Petersburg, online

March 11, 2021 (Thu)
111. The J-equation and the deformed Hermitian-Yang-Mills equation
Gao Chen
March 11, 2021 15:00, St. Petersburg, online
112. Various types of spectra and spectral measures on Cayley graphs of finitely generated groups and their actions
T. V. Nagnibeda
March 11, 2021 16:00, St. Petersburg, online

January 28, 2021 (Thu)
113. On local combinatorial formulas for Euler class of spherical fiber bundle
N. E. Mnev
January 28, 2021 15:00, St. Petersburg, online
114. Recent developments in exact Lagrangian fillings
Honghao Gao
January 28, 2021 16:00, St. Petersburg, online

January 14, 2021 (Thu)
115. The Problem of Changing The Dimension in Tasks of Constructing Optimal Designs
P. V. Shpilev
January 14, 2021 15:00, St. Petersburg, online
116. Exploring Stochastic Methods For Deep Learning and Reinforcement Learning
Zaiwen Wen
January 14, 2021 16:00, St. Petersburg, online

December 17, 2020 (Thu)
117. n-Hierarchical Behavior of Solutions to the Maryland Equation in the Semiclassical Approximation
A. A. Fedotov
December 17, 2020 15:00, St. Petersburg, online
118. Vanishing dissipation limit of planar wave patterns to the multi-dimensional compressible Navier-Stokes equations
Yi Wang
December 17, 2020 16:00, St. Petersburg, online

December 3, 2020 (Thu)
119. Graph-walking automata
A. S. Okhotin
December 3, 2020 15:00, St. Petersburg, online
120. Modeling and Verification of Concurrent and Distributed Systems: From Reo to Mediator
Meng Sun
December 3, 2020 16:00, St. Petersburg, online

November 19, 2020 (Thu)
121. Deep CT Imaging by Unrolled Dynamics
Bin Dong
November 19, 2020 15:00, St. Petersburg, online
122. Gaussian random fields in machine learning
V. A. Borovitskii
November 19, 2020 16:00, St. Petersburg, online

November 5, 2020 (Thu)
123. Heights and separation of characters of finite groups
Yanjun Liu
November 5, 2020 15:00, St. Petersburg, online
124. Basic topology in terms of simplicial sets with a notion of smallness
M. R. Gavrilovich
November 5, 2020 16:00, St. Petersburg, online

October 22, 2020 (Thu)
125. Global existence and decay of solutions to Prandtl system with small analytic data
P. Zhang
October 22, 2020 15:00, St. Petersburg, online
126. When Hopf’s lemma remains valid?
D. E. Apushkinskaya
October 22, 2020 16:00, St. Petersburg, online

July 14, 2020 (Tue)
127. Word maps on simple algebraic groups and related topics
N. L. Gordeev
July 14, 2020 15:00, St. Petersburg, online
128. Structure of commutator subgroups
Z. Zhang
July 14, 2020 16:00, St. Petersburg, online

June 30, 2020 (Tue)
129. Dynamics in the space of metrics and new invariants in ergodic theory
A. M. Vershik
June 30, 2020 15:00, St. Petersburg, online
  
130. The characteristic factors in dynamical systems
X. Ye
June 30, 2020 16:00, St. Petersburg, online

June 16, 2020 (Tue)
131. Multiple structures for quasilinear equations by the variational method
A. I. Nazarov
June 16, 2020 15:00, St. Petersburg, online
  
132. Periodic and quasi-periodic solutions of 1-d Q-curvature equation
M. Jiang
June 16, 2020 16:00, St. Petersburg, online
  

June 2, 2020 (Tue)
133. Spectral synthesis for systems of exponentials and reproducing kernels
A. D. Baranov
June 2, 2020 15:00, St. Petersburg, online
  
134. On gauged linear sigma model and related problems
H. Fan
June 2, 2020 16:00, St. Petersburg, online
  
 
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