Workshop on Prismatic Cohomology

We will study prismatic cohomology, a new cohomology theory developed by Bhargav Bhatt and Peter Scholze. There will be 10 talks, see below for further details.

Organizers: Eike Lau, Torsten Wedhorn, Eva Viehmann / Ulrich Görtz (local organizer)

Date: March 27 – 29, 2019 (We will start on Wednesday at 10am, and the workshop will end on Friday around 2pm)

Place: Department of Mathematics, University of Duisburg-Essen (Thea-Leymann-Str. 9, 45127 Essen)

Program: pdf

Registration

If you are interested in attending, please send an email to Ulrich Görtz, ulrich.goertz@uni-due.de, so that we can keep track of how many people will be around and order enough coffee for the coffee breaks.

Accommodation

Most participants are in B&B Hotel Essen, Helmut-Käutner-Straße 4, 45127 Essen (very close to the math department), Phone: 0201 616960. If you have not yet booked a room, you should contact the hotel as soon as possible. We have reserved a few more rooms until Friday, Feb. 8 (mention “Math Institute/Prof. Görtz”).

Venue

All talks will take place in the math building of the University of Duisburg-Essen, Thea-Leymann-Str. 9/Altendorfer Str. 11, 45127 Essen, seminar room N-U-3.04 (3rd floor, north wing).

To get to the math department from the main station, take the U-Bahn to Berliner Platz. From there, walk down Altendorfer Str. In the ground floor of the building, there is a large Conrad Electronics store, so the building is easy to find.

Talks and schedule

 1 $\delta$-rings Jakob Stix (Frankfurt) Wednesday 10:00 – 11:15 2 Derived completion Jens Hesse (Darmstadt) 11:45 – 12:45 3 Prisms Maria Beckemeyer (Münster) + Karsten Schrödter (Bielefeld) 14:45 – 16:00 4 The prismatic site and the Hodge-Tate comparison map Matteo Tamiozzo (Essen) 16:30 – 17:30 5 Crystalline and Hodge-Tate comparison maps Lennart Gehrmann (Essen) Thursday 9:30 – 10:45 6 Non-abelian derived functors Fritz Hörmann (Freiburg) 11:15 – 12:45 7 Derived prismatic cohomology Kay Rülling (FU Berlin) 15:00 – 16:00 8 Application to perfectoid rings Paul Hamacher (TU München) 16:30 – 17:30 9 Étale comparison Johannes Anschütz (Bonn) Friday 9:30 – 10:45 10 Application: $q$-de Rham cohomology Andreas Pieper (Ulm) 11:15 – 12:30