Organizatorzy

prof. dr hab. Rafał Latała

Informacje

czwartki, 12:15 , sala: 3160

Strona domowa

http://lists.mimuw.edu.pl/listinfo/sem-rp

Lista referatów

9 maja 2024 12:15
Witold Bednorz (University of Warsaw)
Concentration of truncated variation for fractional Brownian motion
The talk will be about some new result that concerns bounding variation for fBM. In particular, I show some technique, due to Picard, which makes it possible to introduce some independence in studying similar questions. …
18 kwietnia 2024 12:15
Piotr Godlewski
Gram-Schmidt Walk algorithm and consequences for Komlós conjecture
Komlós conjecture states that minimal discrepancy of a set of vectors in R^d is bounded from above by a universal constant. I will present, by using a method called Gram-Schmidt Walk, how the best known …
11 kwietnia 2024 12:15
Daniel Murawski (Uniwersytet Warszawski)
Comparing moments of real log-concave random variables.
Log-concave random variables play an important role in probability theory. Moment comparison inequalities of the form ∥X∥_p ≤ C_{p,q}∥X∥_q are particularly useful in concentration of measure and convex geometry. In this talk, I will present …
4 kwietnia 2024 12:15
Rafał Latała (University of Warsaw)
Operator norm of Rademacher random matrices
We will discuss two-sided bounds for the mean value of the operator norm of random matrices with weighted Rademacher entries. We will recall a conjecture (formulated together with Witold Świątkowski) and show that it holds …
21 marca 2024 12:15
Jacek Jakimiuk (Uniwersytet Warszawski)
Maximal sections of the unit ball of l^n_p(C) for p > 2
Eskenazis, Nayar and Tkocz have shown recently some resilience of Ball’s celebrated cube slicing theorem, namely its analogue in l^n_p for large p. I will show that the complex analogue, i.e. resilience of the polydisc …
14 marca 2024 12:15
Stanisław Cichomski
On the existence of extreme coherent distributions with no atoms
I will talk about extreme points of C, the family of all two-variate coherent distributions on [0,1]^2. It is well-known that the set C is convex and weak∗ compact, and all extreme points of C …
7 marca 2024 12:15
Adam Osękowski
Nierówność maksymalna dla zastopowanego dwuparametrowego procesu Wienera
Zaprezentujemy elementy ogólnej teorii optymalnego stopowania dla procesów indeksowanych zbiorami częściowo uporządkowanymi. Jako przykład, omówimy pewne optymalne oszacowanie dla procesu Wienera indeksowanego zbiorem [0,oo)^2.
25 stycznia 2024 12:15
Marta Strzelecka (Uniwersytet Warszawski)
Umiarkowane odchylenia lakunarnych sum trygonometrycznych
Wiadomo z klasycznych już dziś prac Kaca, Salema i Zygmunda oraz Erdősa i Gála, że zachowanie lakunarnych sum trygonometrycznych w wielu aspektach okazuje się być takie samo jak zachowanie sum niezależnych zmiennych losowych. Zachodzi dla …
18 stycznia 2024 12:15
Krzysztof Oleszkiewicz (Uniwersytet Warszawski)
On the asymptotic behaviour of the optimal constants in the Khinchine-Kahane inequality
We will discuss some recent progress in understanding the asymptotic behaviour of the optimal constants in the Khinchine-Kahane inequality between p-th and q-th moments of Rademacher sums. The talk will mostly deal with the most …
14 grudnia 2023 12:15
Bogusław Zegarliński (IM PAN)
Coercive inequalities for Gibbs measures
I will provide some review and present some new results concerning coercive inequalities (Poincare, Log-Sob, IFI) for finite and infinite dimensional systems (associated with some metric measure spaces).
7 grudnia 2023 12:15
Tomasz Tkocz (Carnegie Mellon University)
Hardwired... to Szarek and Ball
I shall present an extension of Szarek’s optimal Khinchin inequality (1976) for distributions close to the Rademacher one when all the weights are uniformly bounded by a 1/√2 fraction of their total l_2 mass; similarly …
30 listopada 2023 12:15
Michał Kotowski (Uniwersytet Warszawski)
The local and global limit of the continuous-time Mallows process
The Mallows process is a process of random permutations whose marginal at time $t$ is the Mallows distribution with parameter $t$. It can be thought of as interpolating between the identity permutation and the reverse …
23 listopada 2023 12:15
Witold Bednorz (Uniwersytet Warszawski)
Estimating positive processes
Recently, the Talagrand conjecture regarding selector processes has been proved: work by Pham and Park. This conjecture concerned the characterization of the expected value of the process supremum in terms of the existence of an …
16 listopada 2023 12:15
Adam Osękowski (Uniwersytet Warszawski)
Oszacowania dla paraproduktów i całek stochastycznych
Paraprodukty to operatory pojawiające się w naturalny sposób w teorii całek singularnych; z grubsza rzecz ujmując, dowolny operator singularny daje się rozłożyć na sumę dwóch paraproduktów oraz zwykłego operatora splotowego. Z uwagi na ten fakt, …
9 listopada 2023 12:15
Marcin Kotowski (CFT PAN)
Circuit complexity of unitary evolutions generated by random GUE Hamiltonians
I will present some applications of random matrix theory and concentration of measure on the unitary group to the problem of circuit complexity in quantum computing. Quantum time evolutions are described by unitary matrices. Circuit …