You are not logged in |
Weekly research seminar
Organizers
- prof. dr hab. Rafał Latała
Information
Thursdays, 12:15 p.m. , room: 3160Home page
http://lists.mimuw.edu.pl/listinfo/sem-rpList of talks
-
May 28, 2026, 12:15 p.m.
Michał Strzelecki (Uniwersytet Warszawski)
Stability under mixtures of functional and transportation inequalities (Stability under mixtures of functional and transportation inequalities)
In the first part of the talk I will recall the definition of a mixture of probability measures and give an overview of known results about stability under mixtures of functional inequalities (such as the …
-
May 21, 2026, 12:15 p.m.
Radosław Adamczak (University of Warsaw)
Exponential inequalities and the law of the iterated logarithm for multiple stochastic integrals and U-statistics on the Poisson space (Exponential inequalities and the law of the iterated logarithm for multiple stochastic integrals and U-statistics on the Poisson space)
I will start by recalling some known concentration estimates and limit theorems for Poisson point processes with focus on U-statistics. Next I will discuss moment and tail inequalities for multiple stochastic integrals (of deterministic functions), …
-
April 16, 2026, 12:15 p.m.
Tomasz Cieślak (IM PAN)
Looking for best constants in inequalities between Hessians (Looking for best constants in inequalities between Hessians)
In my talk I will introduce a family of functional inequalities introduced recently by myself and collaborators. It turned out to be fruitful in dealing with thermodynamics related systems of PDEs. I will emphasize the …
-
April 9, 2026, 12:15 p.m.
Rafał Latała (Uniwersytet Warszawski)
On the subgaussian comparison theorem (after Ramon van Handel) (On the subgaussian comparison theorem (after Ramon van Handel))
We will present the recent result of Ramon van Handel (https://arxiv.org/abs/2512.18588) and prove that any 1-subgaussian random vector is dominated in convex ordering by a universal constant times a standard Gaussian vector. This strengthens Talagrand's …
-
March 19, 2026, 12:15 p.m.
Witold Bednorz (University of Warsaw)
Decoupling via Affine Spectral-Independence: Beck-Fiala and Koml´os Bounds Beyond Banaszczyk (Decoupling via Affine Spectral-Independence: Beck-Fiala and Koml´os Bounds Beyond Banaszczyk)
The plan is to address new advances in the Komlos conjecture, i.e., the upper bound (\log d)^{1/4}. It is based on a paper by Nikhil Bansal and Haotian Jiang.
-
March 5, 2026, 12:15 p.m.
Adam Osękowski (Uniwersytet Warszawski)
Weak-type estimates for differentially subordinate martingales, a dual approach (Oszacowania słabego typu dla martyngałów silnie dominowanych - podejście dualne)
The purpose of the talk will be to present an alternative method of proving sharp estimates for differentially subordinate martingales. A classical approach of Burkholder rests on the construction of a certain function of two …
-
Feb. 26, 2026, 12:15 p.m.
Ioannis Kavvadias (University of Warsaw)
Heat flow on the cube: From Enflo to Talagrand (Heat flow on the cube: From Enflo to Talagrand)
We prove a dimension-free analogue of Pisier's inequality on the discrete cube due to Ivanisvili/ van Handel/ Volberg that resolved a conjecture of Enflo. Moreover, we use their results to recover a variant of a …
-
Jan. 22, 2026, 12:15 p.m.
Daniel Murawski (University of Warsaw)
Optimal pointwise lower bounds for even log-concave densities (Optimal pointwise lower bounds for even log-concave densities)
We show that among all symmetric real log-concave random variables X with variance 1 and any t_0 in range [0, √3] the quantity f_X(t_0) is minimized by a uniform, Laplace or truncated Laplace distribution. We …
-
Jan. 8, 2026, 12:15 p.m.
Jacek Jakimiuk (University of Warsaw)
Stability of Khintchine-type inequalities revisited (Stability of Khintchine-type inequalities revisited)
I give several results on stability of certain Khintchine-type inequalities for Rademacher random variables and random vectors uniform on Euclidean spheres. By stability we mean an inequality strengthened by some positive deficit depending on distance …
-
Dec. 18, 2025, 12:15 p.m.
Krzysztof Ciosmak (Beijing Institute of Mathematical Sciences and Applications)
Localisation for constrained transports: irreducible convex paving and beyond (Localisation for constrained transports: irreducible convex paving and beyond)
Martingale optimal transport is a tool that allows for a model-free pricing of options. Given two probabilities in convex order, I consider the set of martingale transports between them, i.e., the couplings of the given …
-
Dec. 4, 2025, 12:15 p.m.
Zong Shang (Institut Polytechnique de Paris,)
Benign Overfitting Property of the Minimum ell_q-norm Interpolant Estimator in Regression and Classification Problems (Benign Overfitting Property of the Minimum ell_q-norm Interpolant Estimator in Regression and Classification Problems)
In this talk, I will establish high-probability non-asymptotic upper bounds for the population excess risk of minimum \ell_q-norm interpolating estimators in linear regression for all q\geq 1, and minimum \ell_2-norm interpolating classifiers in linear classification. …
-
Nov. 27, 2025, 12:15 p.m.
Witold Bednorz (University of Warsaw)
Some remarks on GSW algorithm (Some remarks on GSW algorithm)
We present an improvement of the GSW martingale method. This has some implications for the Komlos conjecture.
-
Nov. 20, 2025, 12:15 p.m.
Maciej Wiśniewolski (Uniwersytet Warszawski)
On exponential functionals of isotropic Gaussian fields and related hypergeometric equations (On exponential functionals of isotropic Gaussian fields and related hypergeometric equations)
I will discuss a class of exponential integral functionals of isotropic Gaussian fields on the unit interval whose expectations satisfy a specific second-order ordinary differential equation. In a certain sense, this equation can be reduced …
-
Nov. 6, 2025, 12:15 p.m.
Anna Talarczyk-Noble (Uniwersytet Warszawski)
A generalized central limit theorem for critical marked Hawkes processes. (A generalized central limit theorem for critical marked Hawkes processes.)
We study marked Hawkes processes in which occurrence of an event increases the intensity of future events by a certain base intensity function multiplied by an independent mark. We are particularly interested in the case …
-
Oct. 30, 2025, 12:15 p.m.
Alexandros Eskenazis (Sorbonne Université)
On metric formulations of Kwapień's theorem (On metric formulations of Kwapień's theorem)
We will construct counterexamples to previously conjectured metric formulations of Kwapień's theorem from Banach space theory. The key new ingredient in our construction is a novel rigidity theorem for metric transforms of nonpositively curved Alexandrov …
