# Study and Reading Groups

## Study group on dg categories and non-commutative motives

Organizers: Patrick McFaddin and Lie Fu

Dates:

- Friday, May 26, 10:30 am

First meeting - Wednesday, May 31, 4:30 pm

Patrick McFaddin: Introduction to dg categories - Friday, June 2, 2:00 pm

Artur Jackson: Model structures, smooth and proper dg categories - Tuesday, June 6, 2:00 pm

Patrick McFaddin: Smooth and proper dg categories & universal additive invariant - Friday, June 9, 1:00 pm

Lie Fu: Noncommutative Chow motives

## Reading and discussion group on topological Hochschild and cyclic homology

Organizers: Alice Hedenlund and Calvin Woo

Dates:

- Thursday, June 1, 6:00 pm

First meeting - Tuesday, June 6, 3:00 pm

Calvin Woo: Equivariant stable homotopy theory

## Reading group on the paper "Towards a Non-Archimedean analog of Bass-Quillen conjecture"

Organizer: Christian Dahlhausen

We will read the paper Moritz Kerz, Shuji Saito, Georg Tamme: Towards a non-archimedean analytic analog of the Bass-Quillen conjecture. Preprint, arXiv:1608.00703.

Dates:

- Wednesday, May 31, 6:00 pm

First meeting - Friday, June 2, 3:30-4:00 and 4:30-5:00 pm

Christian Dahlhausen: Introduction of the admissible topology - Wednesday, June 7, 4:30 pm

Artur Jackson: Rigid spaces - Friday, June 9, 2:00 pm

Ryomei Iwasa: Vanishing of additive cohomology - Monday, June 12, 2:30 pm

Husney Parvez Sarwar: Vanishing of multiplicative cohomology - Wednesday, June 14, 4:30 pm

Christian Dahlhausen: Homotopy invariance of Pic - Friday, June 16, 2:00 pm

Christian Dahlhausen: K_{0}-invariance

## Study group on the Grayson-Suslin spectral sequence

Organizer: Heng Xie

Dates:

- Tuesday, June 6, 10:30 am

First meeting - Friday, June 9, 10:30 am

Manh Toan Nguyen: Weight filtration via commuting automorphisms - Tuesday, June 13, 10:30 am

Marco Schlichting: Another construction of Grayson's tower - Tuesday, July 11, 10:30 am

Ferdinando Zanchetta: K0 presheaves, K0plus presheaves and Presheaves with transfers - Friday, July 14, 10:30 am

Jonas Irgens Kylling: Rationally contractible sheaves and Grayson's cohomology - Tuesday, July 18, 10:30 am

Heng Xie: Cancellation theorem for Grayson's cohomology - Friday, July 21, 10:30 am

Girja Tripathi: Cohomology with supports and proof of the main theorem