Archive: Stochastik Rhein-Main

11.07.2023 Oberseminar Mainz

Jan Lukas Igelbrink (Universität Mainz Fachbereich Mathematik und Goethe-Universität Frankfurt/M.)

Muller's ratchet with tournament selection: near-criticality and links to the classical ratchet

03.12.2024 Oberseminar Mainz

Sebastian Hummel (ETH Zürich)

Multi-Type Birth-Death Processes with Mean-Field Interactions for B-cell Phylodynamics

17.11.2016 Oberseminar Darmstadt

Benjamin Lees (University of Leeds)

Néel order using a random loop model

07.05.2024 Oberseminar Mainz

Prof. Dr. Steffen Dereich (Universität Münster)

New error bounds for the Adam optimisation algorithm

In this talk, I will give an introduction concerning the training of artifcial neural networks based on stochastic gradient descent algorithms. Whereas there are various approaches for carrying out an error analysis for classical stochastic gradient descent, significantly less is known for more elaborate algorithms such as the Adam algorithm. Recently, we established a new approach which allows us to provide error estimates and to reduce this gap. The talk is based on joint work with Arnulf Jentzen. Read more

08.11.2017 Stochastik-Kolloquium Frankfurt

Prof. Dr. Sebastian Doehler (Hochschule Darmstadt)

New false discovery rate controlling procedures for discrete data

15.04.2025 Oberseminar Mainz

Réka Szabó (University of Groningen)

Oberseminar Mainz

How single cell properties can change network synchronization: The saddle-node loop bifurcation in neuron models - Neurons have traditionally been classified into two types depending on their frequency-input curve. Both types are associated with a particular dynamic transition from rest to spiking. Our work highlights a third transition, for which we found experimental evidence in hippocampal slices. For typical Hodgkin-Huxley-like neuron model, we present a universal bifurcation structure, with the separation of timescale between voltage and ion channel dynamics as one of the bifurcation parameters. We predict that the strongest changes in synchronization with small parameter changes occur at a particular co-dimension two bifurcation, the saddle-node loop bifurcation, and we present characteristics of this transition, from changes in firing rate to phase response curve and synchronization. We will conclude with a short overview over our current research on stress resilience. Read more

13.01.2026 Oberseminar Mainz

Janine Piesold (Johannes Gutenberg-Universität Mainz)

Oberseminar Mainz 13.01.2026

11.05.2021 Oberseminar Mainz

Iulia Dahmer (Johannes-Gutenberg-Universität Mainz)

Oberseminar Stochastik

01.06.2021 Oberseminar Mainz

Dr. Christian Mönch (Johannes Gutenberg-Universität Mainz)

Oberseminar Stochastik

08.06.2021 Oberseminar Mainz

Andreas Meier (Johannes Gutenberg-Universität Mainz)

Oberseminar Stochastik

25.05.2021 Oberseminar Mainz

Leonard Bauer (Johannes Gutenberg-Universität Mainz)

Oberseminar Stochastik

07.02.2023 Oberseminar Mainz

Prof. Dr. Steffen Dereich (Universität Münster)

Oberseminar Stochastik Mainz - 07.05.2024 - Prof. Dr. Steffen Dereich (WWU Münster)

Titel: New error bounds for the Adam optimisation algorithm Abstract: In this talk, I will give an introduction concerning the training of artificial neural networks based on stochastic gradient descent algorithms. Whereas there are various approaches for carrying out an error analysis for classical stochastic gradient descent, significantly less is known for more elaborate algorithms such as the Adam algorithm. Recently, we established a new approach which allows us to provide error estimates and to reduce this gap. The talk is based on joint work with Arnulf Jentzen. Read more

03.07.2025 Oberseminar Darmstadt

Jochen Blath (Goethe-Universität Frankfurt)

On the evolutionary, ecological and pathogenic consequences of dormancy - recent progress and open challenges

21.01.2025 Oberseminar Mainz

Mareike Fischer (Universität Greifswald)

On the reliability of Maximum Parsimony for encoding and reconstructing phylogenetic trees

19.11.2024 Oberseminar Mainz

Sascha Franck (Universität Frankfurt)

On the spread of an infection in a spatially distributed host population with host immunity

17.07.2025 Oberseminar Darmstadt

Ulrik Hansen (Universität Innsbruck)

One Theorem, 16 Couplings

07.07.2020 Oberseminar Mainz

Matthias Birkner (Johannes Gutenberg-Universität Mainz)

Onsagers Lösung des zweidimensionalen Ising-Modells

Karl-Theodor Sturm (Universität Bonn)

Optimal transport, heat flow, and Ricci curvature on metric measure spaces

30.11.2017 Oberseminar Darmstadt

David Dereudre (Université Lille 1)

Path-dependent infinite-dimensional SDE with non-regular drift: an existence result

08.07.2025 Oberseminar Mainz

Réka Szabó (University of Groningen)

Percolation on the stationary distributions of the voter model with stirring

Events archive

Events

Muller's ratchet with tournament selection: near-criticality and links to the classical ratchet

Multi-Type Birth-Death Processes with Mean-Field Interactions for B-cell Phylodynamics

Néel order using a random loop model

New error bounds for the Adam optimisation algorithm

New false discovery rate controlling procedures for discrete data

Oberseminar Mainz

Oberseminar Mainz 13.01.2026

Oberseminar Stochastik

Oberseminar Stochastik

Oberseminar Stochastik

Oberseminar Stochastik

Oberseminar Stochastik Mainz - 07.05.2024 - Prof. Dr. Steffen Dereich (WWU Münster)

On the evolutionary, ecological and pathogenic consequences of dormancy - recent progress and open challenges

On the reliability of Maximum Parsimony for encoding and reconstructing phylogenetic trees

On the spread of an infection in a spatially distributed host population with host immunity

One Theorem, 16 Couplings

Onsagers Lösung des zweidimensionalen Ising-Modells

Optimal transport, heat flow, and Ricci curvature on metric measure spaces

Path-dependent infinite-dimensional SDE with non-regular drift: an existence result

Percolation on the stationary distributions of the voter model with stirring

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