Activities

StuKon 23

August 21 - 23, 2023

Universität Bremen

7th HanDS Days Workshop

June 9, 2023

University of Hamburg

The goal of the workshop is to enhance connections, collaborations and exchange of ideas within the Dynamical Systems & Ergodic Theory community in Northern Germany and beyond. The one-day workshop is a recurring event, taking place twice a year.

6th HanDS Days Workshop

5 December 2022 

Universität Bremen

The goal of the Hanseatic Dynamical Systems Days workshop is to enhance connections, collaborations and exchange of ideas within the Dynamical Systems & Ergodic Theory community in Northern Germany. 

5th HanDS Days Workshop

10 June 2022

Universität Kiel

The goal of the Hanseatic Dynamical Systems Days workshop is to enhance connections, collaborations and exchange of ideas within the Dynamical Systems & Ergodic Theory community in Northern Germany. 

4th HanDS Days Workshop

6 December 2019

The third Workshop on Dynamical Systems & Ergodic Theory in Northern Germany will take place at Jacobs University Bremen.

The goal of the workshop is to enhance connections, collaborations and exchange of ideas within the Dynamical Systems & Ergodic Theory community in Northern Germany. 

7th Bremen Summer School and Symposium on Dynamical Systems: pure and applied

5 - 9 August 2019

Organizers:

Marc Keßeböhmer (University of Bremen), Marcel Oliver (Jacobs University Bremen), Sören Petrat (Jacobs University Bremen), Anke Pohl (University of Bremen), Jens Rademacher  (University of Bremen), Dierk Schleicher (Jacobs University Bremen / TU Berlin)

Thermodynamic Formalism – Applications to Geometry, Number Theory, and Stochastics

8 - 12 July 2019

Institut Mittag-Leffler, Djursholm, Sweden

Thermodynamic formalism and all its branches and applications represent active and rapidly developing areas of modern mathematics that include the study of dynamical systems, ergodic theory, geometry, number theory, quasicrystals and stochastics. The aim of this workshop is to provide a platform for the exchange of knowledge through research talks, open-problem sessions and round-table discussions, in order to bring to light new aspects and gain new insights to problems which occur in these areas and their intersections. As a founding father of several theories which helped to shape the thermodynamic formalism, this event is dedicated to Manfred Denker's 75th birthday.

3rd HanDS Days Workshop

21 June 2019

The third Workshop on Dynamical Systems & Ergodic Theory in Northern Germany will take place at the University of Bremen, Department of Mathematics.

The goal of the workshop is to enhance connections, collaborations and exchange of ideas within the Dynamical Systems & Ergodic Theory community in Northern Germany. 

2nd HanDS Days Workshop

23 November 2018

The second Workshop on Dynamical Systems & Ergodic Theory in Northern Germany will take place at the University of Lübeck, Institute of Mathematics.

The goal of the workshop is to enhance connections, collaborations and exchange of ideas within the Dynamical Systems & Ergodic Theory community in Northern Germany. 

Hands Day Website

1st Hanseatic Dynamical Systems Days

29 June 2018  

The first Workshop on Dynamical Systems & Ergodic Theory in Northern Germany will take place at the University of Hamburg, Department of Mathematics.

The goal of the workshop is to enhance connections, collaborations and exchange of ideas within the Dynamical Systems & Ergodic Theory community in Northern Germany. The one-day workshop will be a recurring event, taking place twice a year.

Winter School Poster 2018

6th Bremen Winter School on Dynamical systems and turbulence

12 - 16 March 2018

The Winter School is mainly sponsored by the Collaborative Research Centre 
TRR 181 "Energy Transfer in Atmosphere and Ocean" funded by DFG.

Bremen - Cal Poly - Lübeck Meeting on Dynamics, Geometry and Stochastics

18 August 2017

Researchers from the Universität Bremen, Universität zu Lübeck and California Polytechnic State University are hosting a one-day meeting on dynamics, geometry and statistics.

Bernd Stratmann

Conference on Thermodynamic Formalism

10 - 12 July 2017

We are hosting a 3-day conference "Thermodynamic formalism - Applications to geometry and number theory" in memory of Prof. Dr. B. O. Stratmann (1957-2015).

Invited speakers are K. Baranski, K. Dajani, K. Falk, J. Fraser, C. Kraaikamp, M. Lapidus, D. Meyer, E. Mihailescu, J. Parker, S. Patterson, A. Pohl, M. Roy, J. Schmeling, M. Stadlbauer, S. Velani, S. Winter, M. Zähle, A. Zdunik.

5th Bremen Winter School on Dynamical systems and fluids

27 - 31 March 2017

The Winter School and Symposium is mainly sponsored by the Collaborative Research Centre 
TRR 181 "Energy Transfer in Atmosphere and Ocean" funded by DFG.

Book cover

Book Publication

Keßeböhmer, Marc; Munday, Sara; Stratmann, Bernd.

Infinite Ergodic Theory of Numbers.

De Gruyter Textbook, 191 pages.

ISBN: 978-3-11-043942-7.

Exchange Program MINTernational

2016 / 2017

With the goal of increasing the internationality of the Mathematics Programs at University of Bremen and California Polytechnic State University (San Luis Obispo), funding from MINTernational was used to promote an exchange between the two universities. As part of this, Arne Mosbach and Malte Steffens traveled to California from January 21st - February 9th, 2017 and Prof. Dr. Tony Samuel held a course on dynamical systems at the University of Bremen from November 22nd - 27th and December 19th - 23rd, 2016. We wish to thank MINTernational for their help in making this possible.

4th Bremen Winter School on Dynamics, Chaos and Applications

14 - 18 March 2016

The main themes of this Winter School will be dynamics on the borderline of order and chaos, symbolic dynamics for hyperbolic surfaces with cusps and applications to Laplace eigenfunctions, contemporary theoretical concepts of dynamical chaos, and dynamics of non-hyperbolic iterated function systems. The Winter School will be aimed at a graduate level, consisting of mini-lecture courses, seminar talks and open problem sessions.

Invited speakers are A. Adam, N. Begun, K. Falk, M. Gonchenko, S. Gonchenko, A.J. Homburg, T. Jäger, G. Keller, P. Kunde, R. Lauterbach, S. Munday, A. Pohl, K. Shinohara, S. Tikhomirov, D. Turaev, E. Verbitskiy and J. Yorke.

Scientific network: Skew product dynamics and multifractal analysis

This scientific network is funded by the Scientific Network Program of the German Research Council. Four consecutive annual workshops will be organized in the years 2012-2015. The network consists of dynamicists from the universities of Bremen, Jena, Erlangen, Vienna and Rio de Janeiro (UFRJ).

  • 1st Workshop: Skew product dynamics and multifractal analysis,
    1-5 October 2012, Luisenthal, Germany.

  • 2nd Workshop: Complexity and dimension theory of skew product systems,
    16-20 September 2013, Erwin-Schrödinger-Institute Vienna, Austria.

  • 3rd Workshop: Dynamical Systems and Dimension Theory,
    8-12 September 2014, Wöltingerode, Germany.

  • 4th Workshop: Workshop on Fractals, Dynamics and Quasicrystals,
    5-9 October 2015, Wöltingerode, Germany.

Winter School Poster 2015

3rd Bremen Winter School and Symposium on Diffusion on Fractals and Non-linear Dynamics

24 March - 2 April 2015

The main themes of this Winter School/Symposium will be Analysis and Diffusion on Fractals, Non-linear Dynamics (Diffusion and Symmetry, Spatial and Temporal Chaos, Stability of Non-linear Waves) and Quasicrystals. The Winter School will be aimed at a graduate level, consisting of mini-lecture courses, seminar talks and open problem sessions. The Symposium will be research based.

Invited speakers are M. Beck, U. R. Freiberg, B. Hambly, K. Hattori, J. Kellendonk, M. Keßeböhmer, J. Kigami, S. Kombrink, D. Lenz, I. Melbourne, E. J. Pearse and S. Zelik.

Oberwolfach Mini-Workshop

28 September - 4 October 2014

Differentiable Ergodic Theory, Dimension Theory and Stable Foliations- (ID 1440c)

Organisers: Eugen Mihailescu (Bucharest), Bernd Stratmann (Bremen)

Participants: M. Urbanski, J. Schmeling, A. Zdunik, B. Saussol, E. Mihailescu, Y. Coudène, M. Kessebohmer, M. Gröger, V. Mayer, J. Jaerisch, B. Bárány, A. Soós, A. Zielicz

The mini-workshop brought together experts in thermodynamical formalism, hyperbolic dynamics and dimension theory from several countries. All participants gave interesting 1-hour talks, and there was also an open problem session, where directions for future work and many open problems were discussed. Among the topics presented/discussed in the workshop were ones related to dimension theory and probability measures on fractals, various types of hyperbolicity, systems with overlaps, complex dynamics and iterated function systems.

Winter School Poster 2014

2nd Bremen Winter School on Kleinian Groups and Transcendental Dynamics

7 - 11 April 2014

The main topics of this Winter School are dynamical aspects of Kleinian Groups and Holomorphic Dynamics. The goal of the meeting is to revive the interest in the so-called 'Sullivan Dictionary'.

Winter School Poster 2013

1st Bremen Winter School on Multifractals and Number Theory

18 - 22 March 2013

The main topics of this Winter School are Multifractal Analyis, Number Theory and Hyperbolic Geometry. It is part of the activities of the DFG Scientific Network - Skew Product Dynamics and Multifractal Analysis. It is aimed at young postdoctoral researchers (postdocs) and Ph.D. students.

This winter school is part of the activities of the Scientific Network - Skew Product Dynamics and Multifractal Analysis. 

Oberwolfach Mini-Workshop

1 - 7 January 2012

Thermodynamic Formalism, Geometry and Stochastics - (ID 1201c)

Organisers: B. O. Stratmann (Univ. Bremen) - M. Urbanski (UNT, Denton, US) - A. Zdunik (Univ. Warszawa, Poland)

Participants: K. Baranski, Ch. Dupont, M. Kesseböhmer, V. Mayer, E. Mihailescu, M. Pollicott, F. Przytycki, M. Roy, J. Schmeling, D. Simmons, B. Skorulski, B. Stratmann, H. Sumi, M. Urbanski A. Zdunik, R. Zweimüller

The workshop will be on recent progress in the area of thermodynamic formalism, an area which is central in the theory of dynamical systems. The fundamental ideas, techniques and methods associated with thermodynamic formalism have their origins in the pioneering work of Ruelle, Sinai, Bowen, Dobroushin and others, who from the late sixties until the mid seventies adapted key methods from statistical physics, in particular the theory of gas lattices, to the context of continuous dynamical systems on compact metric spaces. It was also during this period that important concepts such as topological pressure, the variational principle, equilibrium states and Gibbs states made their decisive breakthrough.

The 8th AIMS Conference on Dynamical Systems, Differential Equations and Applications

25 - 28 May 2010

Dresden University of Technology Dresden, Germany.
Session 57 ('Hyperbolic Dynamics and Smooth Ergodic Theory '): Organized by Eugen Mihailescu and Bernd O. Stratmann.

Winter school on 'Operators and fractals' in Siegmundsburg

7 - 12 March 2010

(Organised by Uta Freiberg, Daniel Lenz)

  • Jean Bellissard (Georgia Institute of Technology)
    "Metrics on tiling spaces and Riemannian Geometry of Metric Spaces"

  • Alexander Teplayev (University of Connecticut)
    "Diffusions and spectral analysis on fractals".

  • Peter Grabner (TU Graz)
    "Complex Dynamics and Fractal Zeta Functions"

  • Bernd Stratmann (Uni Bremen)
    "Fractal geometry and applications"