JournalscmhVol. 95, No. 2Volume 95, No. 2 (2020) Commentarii Mathematici Helveticipp. 211–246Simple groups of birational transformations in dimension twoChristian Urechpp. 247–278Poisson brackets of partitions of unity on surfacesLev BuhovskyAlexander LogunovShira Tannypp. 279–299Singular genuine rigidityLuis A. FloritFelippe Guimarãespp. 301–337Rational equivalence and Lagrangian tori on K3 surfacesNick SheridanIvan Smithpp. 339–359Algebraic varieties are homeomorphic to varieties defined over number fieldsAdam ParusińskiGuillaume Rondpp. 361–420Connected components of strata of Abelian differentials over Teichmüller spaceAaron Calderon
pp. 247–278Poisson brackets of partitions of unity on surfacesLev BuhovskyAlexander LogunovShira Tanny
pp. 339–359Algebraic varieties are homeomorphic to varieties defined over number fieldsAdam ParusińskiGuillaume Rond
pp. 361–420Connected components of strata of Abelian differentials over Teichmüller spaceAaron Calderon
