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
The goal is to provide background on Gromow-Witten theory and then dive into aspects of real geometry and/or properties of the double ramification cycles. See the (quite preliminary) appended program for more details.
The AG will meet Wednesday afternoons starting at 14.15 (two talks of 60 mins per session), Frankfurt, Robert-Mayer-Str 6-8, Raum 309. We start April 30, 2025.
Organizers: Martin Möller
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)