This workshop surveys six-functor formalisms from their classical origins in topology and étale co-homology to recent abstract formulations. We will review the necessary (∞, 1)-categorical background before studying the constructions of Liu–Zheng and Mann, with a focus on their technical foundations.

We then review the language of (∞, 2)-categories and cover the recent independent construction by Cnossen, Lenz, and Linskens.

17th – 19th November 2025 (Monday 9 am – Wednesday 3:30 pm)

TU Darmstadt, Germany – Schlossgartenstr. 7, 64289 Darmstadt

Room: S215 | 244 (second floor of the mathematics institute)

• Please find the programme (PDF file) (opens in new tab), including the timetable, linked here.
• A joint dinner is scheduled for Tuesday, 18th November. Please note that participants will be responsible for their own expenses.
• The workshop will also be streamed via Zoom. If you would like to participate in this way, please indicate this in the registration form or contact Chiara Schmitt in advance. The link will be shared by email.
• Notes (PDF file) (opens in new tab) to Can Yaylali's Talk

Chirantan Chowdhury (TU Darmstadt)

The registration is closed.

For a list of Hotels nearby, please click this link.

If you have any questions regarding the workshop, please do not hesitate to reach out to Chirantan Chowdhury (chowdhury@mathematik.tu-…), or to Chiara Schmitt (cschmitt@mathematik.tu-…) for organizational and administrative matters.