Archive: Stochastik Rhein-Main

21.06.2024 Rhein-Main-Kolloquium

Jiří Černý (Universität Basel)

RMK Mainz

In the presentation, I will consider two related models: the one-dimensional branching Brownian motion in random environment (BBMRE), and the randomized F-KPP equation (rFKPP). I will discuss the following natural questions: (1) Given a typical realisation of the environment, are the distributions of the maximal particle of the BBMRE (re-centred around their medians) tight? (2) For the same environment, is the width of the front of the "travelling-wave" solution to rFKPP uniformly bounded in time? Surprisingly, it turns out that the answers to these questions can be different. This highlights that, when compared to the settings of homogeneous branching Brownian motion and the F-KPP equation in a homogeneous environment, the introduction of a random environment leads to a much more intricate behaviour. The presentation is based on joint works with A. Drewitz, L. Schmitz, and P. Oswald. Read more

24.11.2023 Rhein-Main-Kolloquium

Véronique Gayrard (HCM Marseille)
Jean-Christophe Mourrat (ENS Lyon)

RMKS 24.11.2023 Mainz

03.05.2019 Rhein-Main-Kolloquium

Herbert Spohn (TU München und Uni. Bonn)
Lisa Hartung (Johannes Gutenberg-Universität Mainz)

Herbert Spohn (TU München | Uni. Bonn) Gibbs measures of the Toda chain and random matrix theory | Lisa Hartung (Uni. Mainz) The Ginibre charactzeristic polynomial and Gaussian Multiplicative Chaos

29.05.2020 Rhein-Main-Kolloquium

Giada Basile (Universität Rom)

RMK Frankfurt

29.01.2021 Rhein-Main-Kolloquium

Gábor Lugosi (Department of Economics, Pompeu Fabra University Barcelona)
Po-Ling Loh (University of Cambridge)

RMK Frankfurt - ONLINE

18.05.2018 Rhein-Main-Kolloquium

Michael Scheutzow (TU Berlin)
Friedrich Götze (Universität Bielefeld)

RMK Darmstadt SoSe 2018

22.07.2022 Rhein-Main-Kolloquium

Matthias Hammer (TU Berlin)
Eva Löcherbach (Université de Paris)
Simon Holbach (JGU Mainz)

RMK Mainz 22.07.2022

09.02.2018 Rhein-Main-Kolloquium

Elisabetta Candellero (University Warwick)
Francesco Caravenna (University Milano-Bicocca)

Rhein-Main-Kolloquium

07.12.2018 Rhein-Main-Kolloquium

Dr. Piotr Miłoś (Universität Warschau)
Jakob Björnberg (Universität Göteborg)

RMK Darmstadt

31.01.2020 Rhein-Main-Kolloquium

Sabine Jansen (LMU München)
Dimitrios Tsagkarogiannis (Università degli Studi dell´Aquila)

RMK Darmstadt - 31.01.2020

23.06.2017 Rhein-Main-Kolloquium

Claudia Kirch (Universität Magdeburg)

Frequency domain likelihood approximations for time series bootstrapping and Bayesian nonparametrics

07.07.2023 Rhein-Main-Kolloquium

Christoph Czichowsky (London School of Economics and Political Science)
David Prömel (Universität Mannheim)

RMKS Frankfurt 7. Juli 2023

17.01.2025 Rhein-Main-Kolloquium

Christian Mönch (JGU Mainz)
David Belius (UniDistance Suisse)

RMK Mainz 17.01.2025

11.06.2021 Rhein-Main-Kolloquium

Gaultier Lambert (Universität Zürich)
Christian Brennecke (Universität Bonn)

RMK Frankfurt - ONLINE

24.05.2019 Rhein-Main-Kolloquium

Roland Bauerschmidt (University of Cambridge)
Chiranjib Mukherjee (Universität Münster)

Roland Bauerschmidt: Dynamics of strongly correlated spin systems | Chiranjib Mukherjee: Gaussian multiplicative chaos in the Wiener space

23.06.2017 Rhein-Main-Kolloquium

Carsten Jentsch (Universität Mannhein)

Statistical inference on party positions from texts: statistical modeling, bootstrap and adjusting for time effects

15.11.2024 Rhein-Main-Kolloquium

Christina Goldschmidt (University of Oxford)
Benedikt Stufler (TU Wien)

RMK Frankfurt

12.07.2024 Rhein-Main-Kolloquium

Nicolas Champagnat (Nancy)
Anita Winter (Duisburg-Essen)

RMK Frankfurt

The grapheme-valued Wright-Fisher Diffusion with mutation --- In Athreya, den Hollander and Röllin (2021) models from population genetics were used to de fine stochastic dynamics in the space of graphons that arise as continuum limits of dense graph sequencess. In this talk we extend this framework to a model with mutation. In particular, we define a finite graph valued Markov chain that can be associated with the infinite many alleles model, and establish a diffusion limit as the number of vertices goes to infinity. For that we encode finite graphs as graphemes. Graphems are those graphons that can be represented as a triple consisting of a topological vertex space, an adjacency matrix and a sampling measure. The space of graphons is equipped with convergence of sample subgraph densities. (joint work with Andreas Greven, Frank den Hollander and Anton Klimovsky) -------------------------------------------------------------------- Scaling limits of individual-based models in adaptive dynamics and local extinction of populations (N. Champagnat) --- Starting from an individual-based birth-death-mutation-selection model of adaptive dynamics with three scaling parameters (population size, mutation rate, mutation steps size), we will describe several scaling limits that can be applied to this model to obtain macroscopic models of different natures (PDE, Hamilton-Jacobi equation, stochastic adaptive walks, canonical equation of adaptive dynamics), which allow to characterize the long-term evolution of the population. Motivated by biological criticisms on the time-scale of evolution and the absence of local extinctions in the obtained macroscopic models, we propose new parameter scalings under which we can characterize the evolution of population sizes of the order of $K^\beta$, where $K$ is the order of magnitude of the total population size, and which allows for local extinction of subpopulations. This presentation will gather results obtained with several collaborators: Régis Ferrière, Sylvie Méléard, Amaury Lambert, Viet Chi Tran, Sepideh Mirrahimi, Vincent Hass. Read more

14.01.2022 Rhein-Main-Kolloquium

René Schilling (TU Dresden)

RMK Mainz ONLINE

27.01.2017 Rhein-Main-Kolloquium

Amine Asselah (Université Paris-Est)
Yvan Velenik (Universität Genf)

RMK Frankfurt Winter 2016/17

Archive Workshops

Events

RMK Mainz

RMKS 24.11.2023 Mainz

Herbert Spohn (TU München | Uni. Bonn) Gibbs measures of the Toda chain and random matrix theory | Lisa Hartung (Uni. Mainz) The Ginibre charactzeristic polynomial and Gaussian Multiplicative Chaos

RMK Frankfurt

RMK Frankfurt - ONLINE

RMK Darmstadt SoSe 2018

RMK Mainz 22.07.2022

Rhein-Main-Kolloquium

RMK Darmstadt

RMK Darmstadt - 31.01.2020

Frequency domain likelihood approximations for time series bootstrapping and Bayesian nonparametrics

RMKS Frankfurt 7. Juli 2023

RMK Mainz 17.01.2025

RMK Frankfurt - ONLINE

Roland Bauerschmidt: Dynamics of strongly correlated spin systems | Chiranjib Mukherjee: Gaussian multiplicative chaos in the Wiener space

Statistical inference on party positions from texts: statistical modeling, bootstrap and adjusting for time effects

RMK Frankfurt

RMK Frankfurt

RMK Mainz ONLINE

RMK Frankfurt Winter 2016/17

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