Higher Geometric Structures along the Lower Rhine XIX

Higher Geometric Structures along the Lower Rhine XIX
25th–26th September 2025 — University of Cologne

Organisers: Christian Blohmann, Marius Crainic, Ioan Mărcuț, Ieke Moerdijk and Steffen Sagave

Date: The workshop starts on Thursday, 25th September 2025 at 14:00h and ends Friday 26th September at 18:30h.

Location: Department Mathematics, Weyertal 86-90, 50931 Köln. The talks are in room ‘Hörsaal’ (204) on the 2nd floor.
      For more details on arriving at the department, check our How to find us page here.

Details: This is the nineteenth in a series of short workshops jointly organised by geometers and topologists from Bonn, Cologne, Nijmegen, and Utrecht, all situated along the Lower Rhine. The focus lies on the development and application of new structures in geometry and topology such as Lie groupoids, differentiable stacks, Lie algebroids, generalised geometry, topological quantum field theories, higher categories, homotopy algebraic structures, higher operads, derived categories, and other related topics.

The earlier instalments of these workshops can be accessed here: I (MPIM Bonn), II (Nijmegen), III (Utrecht), IV (MPIM Bonn), V (Nijmegen), VI (Utrecht), VII (Leuven), VIII (MPIM Bonn), IX (Nijmegen), X (Utrecht), XI (MPIM Bonn), XII (Nijmegen), XIII (Utrecht), XIV (MPIM Bonn), XV (Nijmegen), XVI (Utrecht), XVII (MPIM Bonn), XVIII (Nijmegen).

Registration: Please fill the form here. The deadline for registration is the 15th of August.

Accommodation: A limited number of single and double rooms (with two separate beds) have been reserved at Hotel Flandrischer Hof (https://www.flandrischerhof.de/) at a reduced rate, based on a framework agreement between the university and the hotel.
To benefit from this special rate, you must be registered for the workshop and book your room by the 15th of August. When booking, please indicate that you are attending the workshop.

Speakers: Miguel Barata (Utrecht University)
      Severin Barmeier (University of Cologne)
      Thomas Blom (MPIM Bonn)
      Žan Grad (KU Leuven)
      Fabian Hebestreit (University of Bielefeld)
      Annika Tarnowsky (MPIM Bonn)
      Maxime Wybouw (Radboud University)

Titles, Abstracts and Schedule to be announced soon!