Short CV

Education and Employment

1991-1997: Studies of mathematics at the University of Bonn. Diploma in 1997
1997-2000: PhD-student at the University of Bonn; PhD 2000

2000-2005: Assistant (C1) at the University of Bonn

2000/2001: TMR-grant spent at the University Louis Pasteur in Strasbourg.

10/2004-01/2005: grant of the Strategisk Universitetsprogram i Ren Matematikk (SUPREMA) of the Norwegian Research Council, spent at the University of Oslo.

2005-2010: professor of mathematics (W2) at the University of Hamburg.

2009: offer of a W3 professorship at the University of Wuppertal (declined)

Since 2010: professor of mathematics (W3) at the University of Hamburg.

2010: offer of a W3 professorship at the University of Osnabrück (declined)

2019/20: head of department.

Longer research stays

March 2006: research stay at the Institut Mittag-Leffler during the program on Algebraic Topology.

March 2008: research stay at the University of Kobe, Japan.

February/March (1 month) 2009: professeur invité at the Université Paris 13, France.

September/October 2009 (1 month): research stay at the CUNY graduate center, New York.

November/December 2009 (1 month): research stay at the University of Cape Town, South Africa.

March 2010: professeur invité at the Université Paris 13, France.

January-March 2012: research stay at the Newton Institute for Mathematical Sciences, Cambridge, UK.

March and April 2014: research stay at MSRI in Berkeley, USA. Program on Algebraic Topology.

Juli, August 2015: Four weeks at the Hausdorff Institute of Mathematics, Bonn, during the trimester program on Homotopy theory, manifolds, and field theories.

February, August 2016 (1 month), professeur invité at the Université Paris 13, France.

August 2017, Hausdorff Institute of Mathematics, Bonn, trimester program on K-Theory and Related Fields.

09/2018--03/2019, Cambridge UK, (Newton Institute 09--12/2018 Homotopy harnessing higher structures; Churchill College Cambridge 09/2018--03/2019)

03/2020, Cambridge UK, Newton Institute, K-theory, algebraic cycles and motivic homotopy theory.

Conferences (as (co)organizer)

• January 13--17 2025, Introductory Workshop for the program Equivariant Homotopy Theory in Context, Newton Institute Cambridge, with John Greenlees, Magdalena Kedziorek, Stefan Schwede.
• August 23--25 2023, meeting to conclude the DFG Schwerpunktprogramm SPP 1786: Homotopy Theory and Algebraic Geometry, member of the scientific committee with Jens Hornbostel, Marc Levine, Stefan Schwede.
• August 6--12 2023, Oberwolfach workshop Homotopy Theory, with Jesper Grodal, Mike Hill.
• June 20 - 26, 2022, ICM 2022 Satellite "Hochschild (co)homology and derived categories", member of the scientific committee. Cancelled because of the Russian invasion of Ukraine.
• September 30--October 2 2019, Jahrestagung of the DFG Priority Program 1786 Homotopy theory and algebraic geometry, Universität Essen, with Marc Levine, Hélène Esnault, Jens Hornbostel, Stefan Schwede.
• August 4--10 2019, Oberwolfach workshop Homotopy Theory, with Jesper Grodal, Mike Hill.
• July 24--28 2017, Stringmath, Hamburg, member of the local organizing committee.
• October 20, 21 2016, Configuration Spaces and Moduli Spaces in Homotopy Theory, Bonn, A conference on the occasion of Carl-Friedrich Bödigheimer's 60th birthday, organized with Johannes Ebert and Stefan Schwede.
• September 21--25 2015, DMV-Tagung 2015 in Hamburg, member of the organizing and programme committee.
• September 2--4 2015, Summer School on String Topology and Rational Homotopy Theory, joint with Tarje Bargheer and Janko Latschev.
• June 28 to July 4 2015, The European Talbot Workshop 2015 in Klosters, Switzerland. Bjørn Dundas and I were the mentors, Tobias Barthel and Sean Tilson were the organizers.
• September 3--5 2014, workshop Stable Homotopy Theory: Structured Ring Spectra and Their Invariants, joint with Andy Baker, Nigel Ray.
• August 1--5, 2011, workshop Structured Ring Spectra - TNG Hamburg, joint with Andy Baker.
• June 24, 2011, Witt-Kolloquium, Hamburg, joint AZ event.
• March 9--14, 2008, New Topological Contexts for Galois Theory and Algebraic Geometry, Banff, joint with Andy Baker.
• June 5--7, 2007, Workshop on Elliptic Cohomology, Hamburg, joint with Klaus Fredenhagen, Urs Schreiber and Christoph Schweigert.
• September 20--24, 2004, Workshop on structured ring spectra , Bonn, joint with Andy Baker and Stefan Schwede.
• January 21--25, 2002, Workshop on structured ring spectra and their applications, Glasgow, joint with Andy Baker.
• October 8 -- 14, 2000, Arbeitsgemeinschaft mit aktuellem Thema: Operaden und ihre Anwendungen, Oberwolfach, joint with Carl-Friedrich Bödigheimer and Jean-Louis Loday.

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