Guest scientists visiting the IRTG in Bielefeld for research and teaching. Titles of talks given by the guest scientists are listed as well.
Vanja Wagner (Zagreb), 18 November – 22 November 2024
IRTG Block Course: Introduction to fractional calculus
Olaf Post (Trier), 16 September – 18 September 2024
IRTG Seminar: Different variants of generalised operator norm convergence
Denis Brazke (Heidelberg), 18 June – 20 June 2024
IRTG Online Seminar: Asymptotic analysis for a sharp interface model related to pattern formation in biomembranes
Lucian Beznea (Bukarest), February 16 –- February 25, 2023
Gerald Trutnau (Seoul), February 8 –- February 26, 2023
Rene Schilling (Dresden), February 1 –- February 2, 2023
Takashi Kumagai (Kyoto), March 18 –- March 23, 2020
Peter Bella (Dortmund), January 17, 2020
Martin Slowik (Berlin), December 11 – December 13, 2019
Bartlomiej Dyda (Wrocław), November 10 –- November 17, 2019
Takashi Kumagai (Kyoto), November 4 –- November 9, 2019
IRTG Colloquium: Anomalous diffusions and time fractional differential equations
Takashi Kumagai (Kyoto), September 25 –- October 1, 2019
Jean-Christophe Mourrat (Paris), July 11, 2019
IRTG Colloquium Title: Quantitative stochastic homogenization
Jonas Tölle (Augsburg), July 01–05, 2019
Lauri Viitasaari (Aalto), July 01–05, 2019
Dmitri Finkelshtein (Swansea), June 23 – July 7, 2019
Topics Lecture: Dynamics of interacting systems
Takashi Kumagai (Kyoto), June 16 –- July 6, 2019
Jesper R. Ipsen (Melbourne), June 10 – June 20, 2019
Scientific block course: High dimensional stochastic fields and large complex systems
Russell Schwab (Michigan State), May 12 – June 1, 2019
Reinhard Hoepfner (Mainz), May 9, 2019
IRTG Colloquium Title: Ergodic branching diffusions with immigration: invariant occupation measure, high-frequency observation and identification of particles, estimation of the diffusion coefficient at nonparametric rates
Andrey Piatnitski (the Arctic University of Norway), April 7–April 28, 2019
Elena Zhizhina (Institute for Information Transmission Problems Moscow), April 7–April 28, 2019
Claudio Landim (Rio de Janeiro), February 20 – February 27, 2019
Scientific block course: Potential Theory and Metastable Markov chains
Stefan Neukamm (TU Dresden), February 11 – February 14, 2019
IRTG Retreat Norderney
Dmitri Finkelshtein (Swansea), January 20 – January 27, 2019
Matteo Cozzi (Bath), January 13 – January 18, 2019
IRTG Seminar Analysis Title: Regularity results for nonlocal minimal graphs
David Criens (München), January 09 – January 11, 2019
IRTG Seminar Analysis Title: Harnack inequalities for RWRE in balanced environments
Angkana Rüland (Max Planck Institute for Mathematics in the Sciences, Leipzig), January 9 – January 11, 2019
IRTG Colloquium Title: On the (fractional) Calderón problem
Dmitri Finkelshtein (Swansea), December 16 –- 23, 2018
Lucian Beznea (Bucharest), December 01 –- 23, 2018
Iulian Cimpean (Bucharest), December 01 –- 23, 2018
Nina Gantert (Munich), December 6, 2018
IRTG Colloquium Title: Decisiveness or flexibility: who wins?
Sven Jarohs (Frankfurt), November 22 – 23, 2018
IRTG Seminar Analysis Title: On higher-order fractional Laplacians
Kohei Suzuki (Bonn), November 22, 2018
IRTG Colloquium Title: Diffusion Processes Under Synthetic Lower Ricci Curvature Bounds
Takashi Kumagai (Kyoto), November 11 –- November 14, 2018
Mladen Savov (Sofia), November 9 – November 10, 2018
IRTG Seminar Analysis Title: Bernstein-gamma functions and exponential functionals of Lévy processes
Russell Schwab (Michigan State), October 29 – November 14, 2018
IRTG Seminar Analysis Title: Some free boundary evolutions that are equivalent to parabolic integro-differential equations
Krzysztof Bogdan (Breslau), October 8 – October 12, 2018
IRTG Colloquium Title: Yaglom limit for stable processes in cones
Joe P. Chen (Colgate University), August 31 – November 8, 2018
Scientific block course: Random processes induced by Laplacian determinants
Takashi Kumagai (Kyoto), September 2–September 7, 2018
Panki Kim (Seoul), August 30–September 8, 2018
Zoran Vondracek (Zagreb), August 30–September 8, 2018
Armin Schikorra (Pittsburgh), May 7–May 13, 2018
Hölder-Analysis of the Topology of the Heisenberg group
Vedran Sohinger (Warwick), February 27–March 3, 2018
Takashi Kumagai (Kyoto), February 8–February 11, 2018
Niels Jacob (Swansea), January 29–February 2, 2018
Aspects of micro-local analysis in the theory of generators of Feller semi-groups
Xuan Liu (Oxford), January 28–February 4, 2018
BSDEs and non-linear parabolic PDEs on the Sierpinski gasket
Lukasz Lezaj (Wroclaw), January 10–January 17, 2018
Jan Simmer (Trier), January 9, 2018
Approximation of of the Sierpinski Gasket by discrete and metric
graphs:norm convergence of resolvents and spectra
Andrey Piatnitski (the Arctic University of Norway), January 4–January 21, 2018
Homogenization of Steklov sieve spectral problem
Christian Kühn (München), December 21, 2017
Dynamics of Nonlocal PDEs
Jonas Tölle (Augsburg), December 06–13, 2017
The set of sub-o-algebras is a compact metric space
Lauri Viitasaari (Helsinki), December 06–13, 2017
Pathwise Stieltjes integras of discontinuously evaluated
Takashi Kumagai (Kyoto), November 18–21, 2017
Franziska Kühn (Toulouse), November 16 – 18, 2017
Feller processes and their connection to martingale problems for Lévy-type operators
Dmitri Finkelshtein (Swansea), November 6 – 17, 2017
Scientific block course: Long-time behavior in nonlocal reaction-diffusion equations
Serena Dipierro (Milano), October 19 – 27, 2017
Crystal dislocation, nonlocal equations and fractional dynamical systems
Guohuan Zhao (Chinese Academy of Science), October 12 – December 15, 2017
Ergodicity of stochastic differential equations with distribution drifts
Florentin Münch (Universität Potsdam), September 30 – October 6, 2017
Ricci curvature on infinite graphs and stochastic completeness
Takashi Kumagai (Kyoto), August 29 - September 1, 2017
Markus Kunze (Köln), July 28, 2017
Almost surely recurrent motions in the Euclidean space
Russell Schwab (Michigan State), July 17 – 28, 2017
A min-max formula for Lipschitz operators that satisfy the global comparison principle and some applications
Bartlomiej Dyda (Wroclaw University), July 17 – August 12, 2017
On Function Spaces and Extensin Results for Nonlocal Dirichlet Problems
Jurij Kozicki (Lublin), July 16 – August 31, 2017
Topics Lecture “Dynamics of interacting systems”
Joe P. Chen (Colgate Univ), July 8 – August 14, 2017
Scientific block course: Scaling limits of particle systems on nonsmooth spaces
Matthias Erbar (Bonn), July 7, 2017
A gradient flow approach to the Boltzmann equation
Antonia Passarelli di Napoli (Napoli), June 26 – 30, 2017
Regularity results for minimizers of a class of degenerate
functionals with discontinuous coeffcients
Martina Hofmanová (Berlin), June 22 – 26, 2017
Stochastic mean curvature flow
Dorothee Knees (Kassel), June 16, 2017
Discussion of different notions of solutions and
time-discretization schemes for rate-independent damage
Peter Takáč (Rostock), June 9, 2017
Convergence to travelling waves in Fisher's population genetics model with degenerate
diffusion and a non-Lipschitzian reaction term
Rico Zacher (Ulm), June 6 – 9, 2017
Long-time behaviour of solutions to time-fractional diffusion equations
Bogdan Matioc (Düsseldorf), June 2, 2017
Mathematical aspects of fluid flows in porous media
Alexander Teplyaev (Univ. of Connecticut), June 1, 2017
Average power dissipation in AC fractal networks
Uta Freiberg (Stuttgart), May 10 – 12, 2017
Differential operators and generalized trigonometric functions on fractal subsets of the real line
Angkana Rüland (Oxford), May 9 – 12, 2017
Regularity for the thin obstacle problem – Rough variable coefficients and higher regularity
Tuan Anh Nguyen (Berlin), May 5, 2017
A Liouville principle for the random conductance model
Tobias Weich (Paderborn), April 28, 2017
Pollicott-Ruelle resonances
Xiaochuan Tian (Columbia), April 18 – 20, 2017
Trace theorems for some nonlocal function spaces with heterogeneous localization
Grzegorz Karch (Wroclaw), March 13 – 18, 2017
Milosz Krupski (Wroclaw), March 13 – 18, 2017
Armin Schikorra (Freiburg), February 14 – 23, 2017
Scientific block course: Harmonic Maps into Manifolds: Local, Nonlocal, and Applications
Jürgen Saal (Düsseldorf), February 6, 2017
Regularity of fluid flow in non-smooth regions
Emil Wiedemann (Hannover), January 9, 2017
Regularity and Energy Conservation for the Euler Equations
Andrey Pyatnitskiy (Narvik), January 5 – February 4, 2017
Scientific block course: Homogenization
Alexei Daletskii (York), December 4 – 23, 2016
Interacting vector fields on unbound degree graphs
Peter Kern (Düsseldorf), December 15, 2016
Stochastic models for coupled fractional diffusion equations
Gregory Schehr (Paris), December 7, 2016
Extreme statistics of trapped fermions and random matrix theory
Nicola Visciglia (Pisa), December 5, 2016
On large time dynamics for sNLS and HW
Tadahiro Oh (Edinburgh), December 1, 2016
Invariant and quasi-invariant measures for Hamiltonian PDEs
Giovanni Cicuta (Parma), November 16, 2016
Random Antagonistic Matrices
Reinhard Racke (Konstanz), November 14, 2016
The Cauchy problem for thermoelastic plate equations
Diogo Oliveira e Silva (Bonn), November 7, 2016
Sharp Strichartz inequalities for higher order Schrödinger equations
Panki Kim (Seoul), October 6 – 14, 2016
Takashi Kumagai (Kyoto), October 4 – 12, 2016