By Marusia Rebolledo
Application: Eisenstein series, Delta, arithmetic formulas; theta functions and sums of squares
By Valerio Talamanca
By Naotaka Kajino
By Peter Scholze
By Dustin Clausen
By Sébastien Labbé
By Felipe García-Ramos
By Ronnie Pavlov
By Tamara Kucherenko
By Bryna Kra