Arithmetic, geometry, cryptography and coding theory 2021 : 18th International Conference on Arithmetic, Geometry, Cryptography, and Coding Theory, May 31-June 4, 2021, Centre International de Rencontres Mathématiques, [...] / Samuele Anni, Valentijn Karemaker, Elisa Lorenzo García, editors. Providence, Rhode Island : American Mathematical Society, [2022] ; © 2022