From August 29 to 31, the IMW is represented at the workshop Mathematics and Financial Economics - Many Player Games And Applications - at the Humboldt University of Berlin. In addition to financial support from IMW and SFB 1283, Frank Riedel participated as a member of the organizing team. Scientific presentations will be given by Jodi Dianetti, Anna Hager, Giorgio Ferrari and Max Nendel.

More information here

Official description:
This workshop brings together leading experts from mathematics, economics, operations research and engineering departments to discuss recent developments in the theory of many player games and their applications to finance and engineering. The workshop follows up on series of similar events in a recent ZiF Research Group held at Bielefeld University (ZiF - Robust Finance) where the impact of uncertainty and ambiguity for optimal economic decision making were explored. 

The workshop was held on August 29 - August 31, 2022 at the Humboldt University Berlin. It is sponsored by Springer publisher, the Collaborative Research Center CRC 1283 at Bielefeld University, the Berlin-Oxford International Research Training Group IRTG 2544, and the Transregio Collaborative Research Center TRCRC 190 at Humboldt University and LMU Munich. The workshop is jointly organized by the Humboldt University at Berlin and the Center for Mathematical Economics at Bielefeld University.

On June 10th, 2022, Max Nendel gives a talk entitled "Asymptotic parametrization of Wasserstein balls and perturbed Markovian transition semigroups" in the FDM-Seminar of the University of Freiburg.

The rectorate of the University Bielefeld formally extended the Center for Mathematical Economics as a research center until September 2026. Congratulations!

On May 20, Manuel Förster gives an online talk with the title "Strategic transmission of imperfect information: Why revealing evidence (without proof) is difficult" at the University Paris 1 Panthéon-Sorbonne.
Abstract: In our cheap-talk setting, an expert privately observes multiple binary signals, her soft evidence, about a continuous state of the world and then communicates with a decision-maker. While direct transmission of evidence entails communicating details on and potentially revealing each signal, indirect transmission of evidence entails communicating a summary statistics of her evidence. We first establish that fully informative equilibria exist if the conflict of interest is small. Otherwise, direct transmission of evidence is impossible, as neglecting one part of the soft evidence in the communication necessarily induces incentives to manipulate the report on the other part. On the contrary, indirect transmission of evidence remains partially informative for intermediate conflicts of interest. Finally, we introduce the possibility of verification. We show that, if the costs of verification are low, the expert can fully reveal her evidence regardless of the conflict of interest.

Anna Zaharieva becomes a member of the Scientific Advisory Board for the Journal of Migration Studies of Osnabrück University.

The 15th annual BiGSEM Doctoral Workshop on Economics and Management took place from December 14 to 15 and was the first one to be held completely online. The talks covered different topics whithin microeconomic and macroeconomic theory as well as empirical studies. The usual social events were substituted by an online pub quiz and a drawing game. The IMW was represented in the organizing committee by its doctoral student Gerrit Bauch. Further information can be found on the BiGSEM homepage.

The paper „Viability and Arbitrage under Knightian Uncertainty“, a joint project of Frank Riedel, Mete Soner (Princeton) and Matteo Burzoni (Milano), was accepted for publication in "Econometrica".

The IMW appreciates the honour given to Paul R. Milgrom und Robert B. Wilson awarding them with the Nobel Memorial Prize. Their contributions to the field of game theory, especially auction theory, have ever since been seminal and found application in many common scenarios, such as the auction of 5-G mobile licenses. Further reading and comments of Prof. Riedel, director of the IMW, can be found in the following two German newspaper articles: Neue Westfälische, Westfalen-Blatt

Starting from 24th of September 2020, the old homepage of the IMW was exchanged for the new one. It now runs on the new content management system (Roxen17) and fits into the corporate design of the University. If you encounter any wrong links or have suggestions for adjustments, please write an email to our IT support

The IMW is now active on Twitter: https://mobile.twitter.com/BielefeldImw/. In order to increase our perception on Twitter you can help us by retweeting our posts.

The Center for Interdisciplinary Research (ZiF) publishes the article "The Robust Social Market Economy – Some Thoughts on the Corona Pandemics" of Frank Riedel on their website. You can read the article here.

In a German newspaper article by the Neue Westfälische Frank Riedel, leader of the Center for Mathematical Economics, cautions about the consequences of recent actions taken by the European Central Bank in times of the corona crisis.

Torben Koch defended successfully his Ph.D. thesis On some Stochastic Control Problems arising in Environmental Economics and Commodity Markets on February 21.
Torben spent many years at the Center, first as a master student, then as a Ph.D. student and as an administrative support for the Graduate School BiGSEM. Torben is the first Ph.D. student of Professor Ferrari (congratulations to Giorgio as well, therefore!). We wish Torben all the best for his future career in the industry and hope to see him often at our alumni meetings!

Our colleague Martin Lunge has successfully defended his Ph.D. thesis Essays on the Reorganization of Firms and on the Interplay of Hesitant Agents on November 28.
IMW professors Herbert Dawid (first examiner and supervisor) and Volker Böhm (chair) served on the committee. Congratulations!

On October 18, the long-time member of the Center for Mathematical Economics Prof. Dr. Tim Hellmann, who had joined the University of Southampton earlier this month, was bid farewell at a reception.

Tim, most recently at the Center as assistant and junior professor, became a member of the IMW after completing a Master’s degree at the University of Georgia. Following a diploma degree (M.Sc. equiv.) in Mathematical Economics and a doctoral dissertation in Game Theory and Network Economics, Tim received the venia legendi in Economics in 2018.

IMW director Prof. Dr. Frank Riedel and deputy director Prof. Dr. Herbert Dawid acknowledged Tim’s commitment as a supervisor of dissertations and theses as well as in teaching and academic self-administration. They emphasized how much Tim’s research, which both covers classical areas of the IMW’s work and has opened up new fields, has shaped the Center and, through publications and lectures at home and abroad, has contributed greatly to the perception of Bielefeld as a scientific location in general and the IMW in particular.