Arithmetic & Homotopic Galois Theory IRN

With the goals of promoting scientific exchanges and collaborations between French and Japanese researchers, as well as building a long-term AHGT culture, the network supports the regular visits of researchers and the (joint) supervision and mentoring of Master and PhD students.

Visitors 2026

Emmanuel Lepage (IMJ-PRG) visits RIMS, Kyoto University. , Dec. 10 - Jan. 10, 2026.
Séverin Philip (Stockholm) visits RIMS, Kyoto University. , Dec. 2 - Feb. 5, 2026.

Visitors 2025

Densuke Shiraishi (Tokyo University of Science) visits IMJ-PRG, France (jt w/ AiP25) , Nov.02 - Dec.20, 2025.
Autumn in Paris 2025 - Five researchers of RIMS, Kyoto University visits IMJ-PRG and other AHGT French researchers , Nov. 03-29, 2025. B. Collas, T. Fushimi, Y. Hoshi, S. Ishii, K. Sawada.
Naotake Takao (RIMS, Kyoto) visits Bordeaux University and IMJ-PRG. , Sept. 8 - 27, 2025.
Prof. Joachim König (Korea National University of Education) visits Lille University for a "Research in Pair" , June 23-29, 2025.
Angelot Behajiana (Lille) visits RIMS, Kyoto University and Institute of Science Tokyo . , June 4 - 21, 2025.
Anna Cadoret (IMJ-PRG) visits RIMS, Kyoto University. , June 1 - Aug. 31, 2025.
Prof. Ariane Mézard (ENS PSL) visits RIMS, Kyoto University , March 27-May 31, 2025.
Prof. Pierre Dèbes (Lille) visits RIMS, Kyoto University and Osaka University. , 15 March - April 28, 2025.
Spring at RIMS 2025 - International visits to RIMS and Osaka for the Spring workshops. , March, 2025. N.Gropper (US), T.Holzschuh (GE), S.Philip (SWE)..

Visitors 2024

Valentijn Karemaker (Utrecht University) visits RIMS Kyoto University, Kyoto , Nov. 11-22, 2024.
Rachel Pries (Colorado State University) visits RIMS Kyoto University, Kyoto , Nov. 3-10, 2024. Exact dates to be confirmed.
Autumn in Paris 2024 - Four researchers of RIMS, Kyoto University visits ENS Paris and other AHGT French researchers , Sept. 16-Oct. 07, 2024. B. Collas, Y. Hoshi, A. Minamide, K. Sawada.
Yuichiro Taguchi (Tokyo Institute of Technology) visits IHES, Paris , Sep. 9 - Oct. 12, 2024.
Takao Naotake (RIMS Kyoto) visits Bordeaux University , Sept. 08 - 27, 2024. Incl. 2 days in Paris.
Yasuda Seidai (Hokkaido University) visits ENS PSL , Sept. 02 - 29, 2024.
Anna Cadoret (Sorbonne University) visits RIMS, Kyoto University , Aug. 1 - Oct. 25, 2024.
Tadashi Ochiai (Tokyo Institute of Technology, JP) welcomes Francesco Lemma (IMJ PRG, France) , June 8 - July 8, 2024.
Yuichiro Taguchi (Tokyo Institute of Technology) visits RIMS, Kyoto , May 26 - 28, 2024. Also June 24-26 and August 5-7, 2024.
Christopher Rasmussen (Wesleyan University, USA) visits RIMS Kyoto University, Japan , May 26 - June 8, 2024. With an AHGT Talk on June the 3rd, 2024.
Séverin Philip (RIMS Kyoto University, Japan) visits ENS PSL, France , May 15 - 31, 2024. Supported by a JSPS grant.
Ariane Mézard (ENS PSL) visits RIMS, Kyoto University , Apr. 10-21, 2024.
Emmanuel Lepage (IMJ-PRG, France) visits RIMS Kyoto University, Japan , April 7 - 15, 2024. With a lecture series at RIMS (Apr.7-15).

Visitors 2023

A CNRS Mathematics delegation visits RIMS, Kyoto University , Oct. 3rd, 2023. C. Besse & J.-C. Dhersin (CNRS), K. Ono, A.Tamagawa and B. Collas.
Benoit Fresse (Lille) visits RIMS, Kyoto University , Oct. 29 - Nov. 05, 2023. With special talks (x2) at RIMS on Nov. 2.
Autumn in Paris 2023 - Four researchers of RIMS, Kyoto University visits ENS Paris and other AHGT French researchers , Oct. 03-29, 2023. B. Collas, Y. Hoshi, A. Minamide, K. Sawada.
Hiroaki Nakamura (Osaka) visits Lille University , Oct. 02 - 17, 2023. With talk at Lille AHGT Day 2023.
David Corwin (Ben Gurion University) visits Université Sorbonne Paris Nord , Sept. 14 - Oct. 12, 2023. With talk at LAGA Paris Nord Sorbonne.
Takao Naotake (RIMS Kyoto) visits ENS PSL and Lille , Aug. 15 - Sept. 30, 2023. Supported by ``Exploration France 2023'', a program of the French Embassy in Tokyo.
Anna Cadoret (Sorbonne University) visits RIMS, Kyoto University , July 17 - Oct. 07, 2023.
Emmanuel Lepage (Sorbonne Université - Université de Paris) visits RIMS, Kyoto University , 1- 22 June, 2023.
Prof. Yves André (CNRS - Sorbonne Université - Université de Paris) visits RIMS, Kyoto University , 15 - 21 March, 2023.
Prof. Pierre Dèbes (Lille) visits RIMS, Kyoto University , 13 March - April 30, 2023.

Visitors 2022

Prof. Ariane Mézard (ENS PSL) visits RIMS, Kyoto University , 18 Dec. 22 - Jan. 18, 2023.

See news, workshops, and seminars of the network.

Students 2025

Jules Fressonet, ENS PSL France, M1 internship at RIMS Kyoto -- Advisor: B. Collas & A. Tamagawa (RIMS Kyoto) on Anabelian considerations in Arithmetic and Homotopic Galois Theory/ 数論ホモトピーガロア理論に遠アーベル考察 April 21 - June 11, 2025.
Léo Filmont, ENS Rennes France, M1 internship at RIMS Kyoto -- Advisor: B. Collas (RIMS Kyoto) on Anabelian considerations in Arithmetic and Homotopic Galois Theory/ 数論ホモトピーガロア理論に遠アーベル考察, May 19 - July 21, 2025.
Tsun-wei Lee, ENS Rennes France, M1 internship at RIMS Kyoto -- Advisor: G. Yamashita (RIMS Kyoto) on Anabelian considerations in Arithmetic and Homotopic Galois Theory/ 数論ホモトピーガロア理論に遠アーベル考察, dates TBD.

Students 2024

KATAYAMA Taichi, Nagoya University, PhD co-supervision Nagoya-Strabsourg -- Advisors: I. Furusho & B. Enriquez. Supported by ``Bourses France Excellence 2024'', a program of the French Embassy in Tokyo.
Matteo Soreda, ENS Rennes France, M1 internship at RIMS Kyoto -- Advisor: S. Mochizuki & B. Collas (RIMS Kyoto) on Arithmetic Galois groups as abstract groups, May 20 - July 20, 2024.
Brieuc Lair, ENS PSL France, M1 internship at RIMS Kyoto -- Advisor: B. Collas (RIMS Kyoto) on Anabelian considerations in Arithmetic and Homotopic Galois Theory/ 数論ホモトピーガロア理論に遠アーベル考察, March 4 - May 17, 2024.
Matthias Alizon, ENS PSL France, M1 internship at RIMS Kyoto -- Advisor: A. Hoshi (Niigata), Apr. 1 - June 1, 2024.

Students 2023

Marceau Ringuedé, ENS Rennes France, M1 internship at RIMS Kyoto -- Advisor: B. Collas on Anabelian considerations in Arithmetic and Homotopic Galois Theory/ 数論ホモトピーガロア理論に遠アーベル考察, from Apr. 26 to July 9, 2023.
Martin Baget, ENS Lyon France, M1 internship at RIMS Kyoto -- Advisor: G. Yamashita on Anabelian geometry and number theory/遠アーベル幾何学と整数論, from June 5 to Aug. 4, 2023.
Haohao Liu, PhD researcher of ENS PSL & IMG-PRG France, visits RIMS Kyoto, from Aug. 4 to Aug. 25, 2023.

See also young researchers AHGT activities between France and Japan.

Information for visitors

Visiting the Research Institute for Mathematical Sciences [数理解析研究所へのアクセス]
Institut Francais du Kansai-Kyoto [関西日仏学館]
Japanese International Student Lounge 'KIZUNA' [留学生ラウンジ]

AHGT Visitors & Students