Arithmetic and Homotopic Galois Theory Days - Workshop Series

The ``AHGT Days'' workshop series is an annual meeting focusing on one of the latest trends of arithmetic homotopy and Galois theory, with the goal of exploring some new interfaces between researchers. The event take places in person thanks to the ``Autumn in Paris'' Japan-France exchange program; no registration is necessary to attend.

Paris AHGT Days 2025 - The Homotopy-Homology Frontier

Poster Program

Paris IMJ-PRG (Jussieu), France Nov. 17-19, 2025 Org.: B. Collas (RIMS Kyoto, JP), B. Enriquez (IRMIA Strasbourg, FR), A. Mézard (IMJ-PRG, FR).

Speakers

  • David Corwin, Ben-Gurion University, Israel
  • Charles De Clercq, Université Sorbonne PN, France
  • Javier Fresán, IMJ-PRG, France
  • Yuichiro Hoshi, RIMS Kyoto University, Japan
  • Shin Ishii, Keio University, Japan
  • David Jarossay, De Vinci Research Center, France
  • Haohao Liu, IRMIA Strasbourg University, France
  • Fabrice Orgogozo, IMJ-PRG, France
  • Densuke Shiraishi, Tokyo University of Sciences, Japan
  • Herman Soré, Université Nazi Boni, Burkina Faso
  • Yuri Yatagawa, Institute of Science Tokyo, Japan

Keywords: Anabelian geometry, arithmetic of local systems, Quillen model categories, motivic theory, Chabauty-Kim theory.

Paris AHGT Days 2024

Paris IMJ-PRG (Jussieu), France Sept. 23-24, 2024 Org.: B. Collas (RIMS Kyoto, JP), E. Lepage (IMJ-PRG, FR).

Speakers and Program

  • Benjamin Collas, RIMS Kyoto University, Japan
  • Antoine Ducros, IMJ-PRG, France
  • Yuichiro Hoshi, RIMS Kyoto University, Japan
  • Emmanuel Lepage, IMJ-PRG, France
  • Arata Minamide, RIMS Kyoto University, Japan
  • Jérôme Poineau, Caen University, France
  • Koichiro Sawada, RIMS Kyoto University, Japan
  • Yuichiro Taguchi, Institute of Science Tokyo, Japan
  • Floris Vermeulen, Lille University, France

Keywords: Anabelian geometry, Berkovich geometry, Hilbert and rational points, algebraic number theory, braids and arithmetic.

The program and schedule are available here [AHGT Days 2024 Program].

Workshop Poster

Lille AHGT Days 2023

Lille, France Oct. 10, 2023 Org.: P. Dèbes (Lille, FR), B. Fresse (Lille, FR).

Speakers and Program

  • Niels Borne, Lille University, France
  • Arata Minamide, RIMS Kyoto University, Japna
  • Hiroaki Nakamura, Osaka University, Japan
  • Koichiro Sawada, RIMS Kyoto University, Japan
  • Antoine Touzé, Lille University, France

Keywords: Anabelian geometry, braids and arithmetic, parabolic connections, topological vs algebraic invariants in homology.

The program and schedule are available here [AHGT Days 2023 Program].

The poster of the workshop is here [Workshop Poster :: PDF]

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