JournalscmhVol. 95, No. 2

Volume 95, No. 2 (2020)

Commentarii Mathematici Helvetici

Comment. Math. Helv. cover

pp. 211–246
Simple groups of birational transformations in dimension two
Christian Urech
DOI 10.4171/CMH/486
pp. 247–278
Poisson brackets of partitions of unity on surfaces
Lev BuhovskyAlexander LogunovShira Tanny
DOI 10.4171/CMH/487
pp. 279–299
Singular genuine rigidity
Luis A. FloritFelippe Guimarães
DOI 10.4171/CMH/488
pp. 301–337
Rational equivalence and Lagrangian tori on K3 surfaces
Nick SheridanIvan Smith
DOI 10.4171/CMH/489
pp. 339–359
Algebraic varieties are homeomorphic to varieties defined over number fields
Adam ParusińskiGuillaume Rond
DOI 10.4171/CMH/490
pp. 361–420
Connected components of strata of Abelian differentials over Teichmüller space
Aaron Calderon
DOI 10.4171/CMH/491