January 4, 2021

**To the members of the Executive Organizing Committee and Local Organizing Committee of the International Congress of Mathematicians (ICM):**

Dear ICM Organizers,

The international mathematical community is deeply concerned about the situation of Azat Miftakhov, the graduate student from Moscow State University who has been detained by Russian state authorities for nearly two years.

Azat is a talented young mathematician who comes from the Tatarstan region in the Russian Federation. Already in school he won prizes in several math competitions and received support given to talented young people by the Ministry of Education and Science. As a student in Moscow he became involved with the anarchist movement. In February 2019, right after his return from a conference in Nizhni Novgorod where Azat gave his first talk in English, he was detained by the police and accused of manufacturing explosives. He was tortured at the police station. After three days Azat was released, since the court found no evidence to justify his detention. Less than two days later, on February 9, 2019, he was again arrested and accused of destruction of an office window of the United Russia political party, an act which had taken place more than a year earlier. He has been kept in jail since then. The lack of evidence in Azat’s case is disturbing, as is the fact that, for most of the time since his arrest, he has remained in pre-trial detention.

Azat pleads not guilty. During his detention he has managed to publish two mathematical preprints on arxiv.

Azat Miftakhov has been recognized as a political prisoner by the Russian human rights organization “Memorial”. The American Mathematical Society and Société Mathématique de France have issued statements of concern. A recent petition in support of Azat has been signed by more than 2000 mathematicians from more than 15 countries.

On December 23, 2020 it was announced that Azat faces six years of prison if convicted.

While Russia is going to host the ICM in less than two years, Miftakhov’s trial reminds us of the host country’s frequent violations of human rights and repression of freedoms, which are regularly condemned by human rights organizations. Let us recall that in 1982 the International Congress in Warsaw was postponed by one year, during which various actions were taken by the international mathematical community to free political prisoners in Poland.

Freedom is one of the highest values for us as scientists. Attending the congress while our colleague Azat Miftakhov is arbitrarily detained will pose a serious dilemma for us and for the entire mathematical community. We kindly ask you to take an active position on this case and to communicate with the state authorities to free Azat.

**Signatories**

Ahmed Abbes, mathematician, Director of research at CNRS, Paris

Zofia Adamowicz, Professor, Institute of Mathematics of the Polish Academy of Sciences

Fabrizio Andreatta, Professor of mathematics, Università Statale di Milano

Michèle Audin, mathematician and writer

Viviane Baladi, mathematician, Director of research at CNRS, Paris

Arnaud Beauville, Professor emeritus of mathematics, Université Côte d’Azur

Michel Broué, Professor emeritus of mathematics at the University of Paris

Antoine Chambert-Loir, Professor of mathematics, Université de Paris

Bruno Chiarellotto, Professor of mathematics, Università degli studi di Padova

Henri Darmon, Professor of mathematics, McGill University

Chandler Davis, Professor emeritus of mathematics at the University of Toronto

Adrien Deloro, Associate professor of mathematics at Sorbonne Université

Fabien Durand, Président de la Société Mathématique de France, Professor of mathematics, Université de Picardie Jules Verne

Ivar Ekeland, FRSC, Professor emeritus of mathematics and former President, University of Paris-Dauphine

Pavel Etingof, Department of Mathematics, MIT

Javier Fresán, Professor, École polytechnique

Dennis Gaitsgory, Professor of mathematics, Harvard University

Paul Garrett, Professor of mathematics, University of Minnesota

Damien Gayet, Professor of mathematics at Institut Fourier and Editor-in-chief of the Gazette des mathématiciens

Catherine Goldstein, Director of research at CNRS, Institut de mathématiques de Jussieu-Paris Gauche, Paris

Timothy Gowers, Professor of combinatorics, Collège de France

Michael Harris, Professor of mathematics, Columbia University

Frédéric Hélein, Professor, Université de Paris

Ilya Kapovich, Professor of mathematics, Hunter College of CUNY, Chair, Committee on the Human Rights of Mathematicians, American Mathematical Society

Vincent Lafforgue, mathematician, Director of research at CNRS, Grenoble

François Loeser, Professor of mathematics, Sorbonne University

Wiesława Nizioł, mathematician, Director of research at CNRS, IMJ-PRG, Sorbonne University

Joseph Oesterlé, Professor emeritus of mathematics at Sorbonne University, Paris

Arthur Ogus, Professor emeritus of mathematics, University of California at Berkeley

Fabrice Planchon, Professor of mathematics, Sorbonne University

Bjorn Poonen, Distinguished professor in science, Massachusetts Institute of Technology

Raphaël Rouquier, Professor of mathematics at the University of California at Los Angeles

Claude Sabbah, Director of research at CNRS, Université de Paris-Saclay

Takeshi Saito, Professor of mathematics at the University of Tokyo

Peter Sarnak, Professor of mathematics, Princeton

Pierre Schapira, Professor emeritus of mathematics, Sorbonne Université

Peter Scholze, Professor of mathematics at the University of Bonn and Director of Max Planck Institute for Mathematics in Bonn

Adam Skalski, Institute of Mathematics of the Polish Academy of Sciences

Stephen Smale,** **Professor emeritus of mathematics, University of California at Berkeley

Christophe Soulé, mathematician, member of the French Academy of Science

Bernard Teissier, mathematician, Director of research emeritus at CNRS, Paris

Dylan Thurston, Professor of mathematics, Indiana University, Bloomington

Claude Viterbo, Professor of mathematics at the University of Paris-Saclay and at the École normale supérieure de Paris

Masha Vlasenko, Professor, Institute of Mathematics of the Polish Academy of Sciences

David A. Vogan, Jr., Professor emeritus of mathematics, MIT

Jarosław A. Wiśniewski, Professor of mathematics at the University of Warsaw and corresponding Member of the Polish Academy of Sciences

Hatem Zaag, mathematician, Director of research at CNRS, Paris