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 Thursdays at 13:30 on a weekly basis in room 309, Robert-Mayer-Str. 6-8, Frankfurt.
More information can be found here.
Organizers: Benjamin Steklov and Jakob Stix
We meet Tuesdays, 14:30-15:00, on a weekly basis in room S2|15 401, Darmstadt, and via Zoom.
More information can be found here.
Organizers: Timo Richarz and Paul Siemon
We meet Thursdays, 9–11, SR 8, Mathematikon
First meeting: Oct 15, 2026
More information can be found here.
Organizers: Alexander Schmidt and Tim Holzschuh
We meet Thursdays, 11:15, SR 8, Mathematikon and virtually.
More information can be found here.
Organizers: Otmar Venjakob and Anna Blanco-Cabanillas
We meet Fridays, 09:15, SR 8, Mathematikon.
More information can be found here.
Organizers: Gebhard Böckle, Hazem Hassan, Judith Ludwig and Alireza Shavali
Time: Every second Friday there will be two talks, each not more than 90 minutes with questions, from 2pm till 6pm, starting on the 23rd of October.
Place: Leibniz University Hannover, Room A410 and via Zoom (Zoom link will be communicated).
More information can be found here.
Organizers: Dmytro Rudenko, Ronald Solodov
Past GAUS-AGs
- Tame Local Langlands (organizers: Timo Richarz and Torsten Wedhorn)
- p-adic Simpson correspondence (organizers: Magnus Carlson and Ruth Wild)
- Konstruktion von Galoisüberlagerungen mithilfe starr-analytischer Verklebung (organizer: Alexander Schmidt)
- Noether-Lefschetz loci in A_g and modularity (organizers: Jan Brunier, Martin Möller and Riccardo Zuffetti)
- Higher Algebra (organizers: Rustam Steingart and Marvin Schneider)
- The mod p Riemann-Hilbert correspondence (organizer: Tom Bachmann)
- Locally analytic vector bundles on the Farques-Fontaine-curve (organizers: Otmar Venjakob and Marvin Schneider)
- Anabelian Geometry (organizers: Magnus Carlson and Marius Leonhardt)
- Categorical Deligne-Langlands correspondence (organizers: Rızacan Ciloglu, Timo Richarz and Torsten Wedhorn)
- D-elliptic sheaves and the Hasse principle (organizers: Andrea Conti, Alireza Shavali and Sriram Chinthalagiri Venkata)
- Motivic Spectra (organizers: Georg Tamme, Tom Bachmann and Klaus Mattis)
- Berkovich Motives (organizers: C. Dahlhausen, A. Merici and C. Yaylali)
- Gromov-Witten theory and real enumerative geometry (organizer: Martin Möller)
- 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)