Volume 96, No. 3 (2021)
Commentarii Mathematici Helvetici
pp. 421–463 You can hear the shape of a billiard table: Symbolic dynamics and rigidity for flat surfacesMoon DuchinViveka ErlandssonChristopher J. LeiningerChandrika Sadanand
pp. 465–481 Subadditivity of Kodaira dimension does not hold in positive characteristicPaolo CasciniSho EjiriJános KollárLei Zhang
pp. 483–513 Self-referential discs and the light bulb lemmaDavid Gabai
pp. 515–559 Isometric immersions of RCD spacesShouhei Honda
pp. 561–588 Filling random cyclesFedor Manin
pp. 589–630 Topological dynamics beyond Polish groupsGianluca BassoAndy Zucker