Definition: A GAUS-AG is a typically semester long (bi-)weekly Arbeitsgemeinschaft with talks by typically GAUS-members aiming to learn together current developments along a coordinated programme. Talks serve multiple purposes with introductory talks laying the foundations of a theory and more advanced talks that dig into technical parts of a new result. Sometimes we invite “the” specialist for the topic of the programme to give a final talk.
We meet every Thursday at 11 p.m. (s.t.) in SR 8 (Mathematikon) in Heidelberg.
The program can be found here.
Organizers: Otmar Venjakob and Marvin Schneider
During the summer term 2025, the anabelian GAUS-AG has the title
Arithmetic representations of fundamental groups after Daniel Litt “Arithmetic representations of fundamental groups II”.
The AG will meet Thursday afternoon 14:00-18:00 approximately biweekly for 7 times alternating between Heidelberg and Frankfurt, with two talks per meeting. We start May 08, 2025, and the remaining dates can be found in the GAUS-calendar and the programme.
Organizers: Magnus Carlson and Marius Leonhardt
We meet every Tuesday 14:00 – 15:30 in S2|15 401 in Darmstadt in person and hybrid.
The program can be found here.
The organizers are: Rızacan Ciloglu, Timo Richarz and Torsten Wedhorn
The seminar will take place on Fridays, 9-11, in room SR8.
The goal of the seminar is to study the recent paper by Arai-Hattori-Kondo-Papikian.
We will have some preliminary talks on stacks and D-elliptic sheaves.
The program can be found here.
Organizers: Andrea Conti, Alireza Shavali and Sriram Chinthalagiri Venkata
We are organizing a GAUS AG on non-A^1-invariant motivic spectra à la Annala-Hoyois-Iwasa. The seminar will usually take place Mondays from 10:15-11:45 in Mainz (Hilbertraum), with some exceptions due to holidays.
The programme can be found here.
Organizers: Georg Tamme, Tom Bachmann, Klaus Mattis
We are organizing a GAUS AG on Scholze’s new preprint on Berkovich motives.
The AG will meet biweekly on Thursdays: there will be sessions of two talks alternating between Heidelberg, Darmstadt, and Frankfurt. The first session will be in Darmstadt on 24.04 at 13:00, at room 315.
The programme can be found here.
Organizers: C. Dahlhausen, A. Merici and C. Yaylali
Past GAUS-AGs
- Anabelian geometry (organizers: Magnus Carlson, Ruth Wild, Jakob Stix and Alexander Schmidt)
- Vector bundles on curves (organizers: Torsten Wedhorn and Timo Richarz)
- The direct summand theorem (organizers: Marlon Kocher and Marvin Schneider)
- Moduli of Quiver Representations and GIT Quotients (organizers: Andrei Bud, Johannes Horn, Martin Möller, Karin Schaller and Martin Ulirsch)
- Hodge Theory (organizers: Georg Tamme, Tom Bachmann, Manuel Blickle, Manfred Lehn and Duco van Straten)
- Congruence Modules and the Wiles–Lenstra–Diamond Numerical Criterion in Higher Codimension (organizers: Alireza Shavali, Andrea Conti)
- Anabelian Geometry (organizers: Magnus Carlson and Jakob Stix)
- Chromatic Homotopy Theory (organizers: Timo Richarz and Georg Tamme)
- Arithmetic of critical p-adic L-functions (organizers: Otmar Venjakob and Max Witzelsperger)
- Shtukas for reductive groups and global Langlands correspondence after Vincent Lafforgue (organizers: Gebhard Böckle, Oguz Gezmis, Alireza Shavali and Sriram C. Venkata)
- Purity for flat cohomology (organizer: Amine Koubaa)
- Anabelian geometry (organizers: Jakob Stix, Tim Holzschuh and Marcin Lara)
- Emerton-Gee-Stacks (organizers: Marlon Kocher and Rustam Steingart)
- Exodromy (organizers: Tom Bachmann, Manuel Blickle and Georg Tamme)
- Rigid analytic motives (organizers: Rızacan Ciloglu, Lucas Gerth, Jon Miles and Timo Richarz)
- Rigid meromorphic cocycles (organizers: Gebhard Böckle, Oguz Gezmis and Judith Ludwig)
- Bridgeland stability conditions and applications (organizers: Jiaming Chen, Andrei Bud, and Martin Möller)
- Superconnections, theta series, and period domains (organizers: Jan Hendrik Bruinier, Yingkun Li and Riccardo Zuffetti)
- Prismatization (organizers: Torsten Wedhorn)
- Vectorial Drinfeld modular forms over Tate algebras (organizers: Gebhard Böckle and Oguz Gezmis)
- Condensed Mathematics (organizers: Achim Krause and Rustam Steingart)
- Six functor formalism and Poincaré duality (organizers: Christian Dahlhausen and Marius Leonhardt)
- Non-hypergeometric E-functions (organizers: Gabriele Bogo, Konstantin Jakob)
- Buildings (organizers: Luca Battistella, Martin Ulirsch)
- K-theory of the integers and the Kummer-Vandiver conjecture (organizers: Alexander Schmidt, Christian Dahlhausen)
- Moduli of Langlands parameters (organizers: Gebhard Böckle, Thibaud van den Hove, Judith Ludwig, Timo Richarz, Torsten Wedhorn)
- The André-Oort conjecture (organizers: Jiaming Chen, Jakob Stix, Riccardo Zuffetti)
- Prismatic cohomology (organizers: Milan Malcic, Max Witzelsperger)
- Étale motives (organizers: Rizacan Çiloğlu, Thibaud van den Hove, Timo Richarz)
- Anabelian geometry: the Grothendieck conjecture for affine curves (organizers: Tim Holzschuh, Jakob Stix)
- Hodge theory of matroids (Organizer: Martin Ulirsch)
- Bloch-Kato Selmer groups and the Fargues-Fontaine curve (Organizer: Otmar Venjakob)
- Tame Cohomology (Organizers: Katharina Hübner, Alexander Schmidt)
- Projectivity of the Witt vector affine Grassmannian (Organizers: Georg Tamme, Manuel Blickle)
- Moduli of curves and the theory of algebraic stacks (Organizer: Ariyan Javanpeykar)
- Plectic Stark-Heegner points after Fornea-Gehrmann and Fornea-Guitart-Masdeu (Organizers: Peter Gräf, Gebhard Böckle)
- The P=W conjecture (Organizers: Johannes Horn, Martin Möller)