On the Mumford–Tate conjecture for hyperkähler varieties Salvatore Floccari OriginalPaper Open access 25 May 2021 Pages: 309 - 324
Kähler fibrations in quantum information theory Ivan ContrerasMichele Schiavina OriginalPaper 20 May 2021 Pages: 325 - 349
Exact principal blowup rate near the boundary of boundary blowup solutions to k-curvature equation Kazuhiro Takimoto OriginalPaper 06 May 2021 Pages: 351 - 369
On Hopf hypersurfaces of the homogeneous nearly Kähler \({\mathbf {S}}^3\times {\mathbf {S}}^3\), II Zeke YaoZejun Hu OriginalPaper 03 May 2021 Pages: 371 - 402
Integrality of Seshadri constants and irreducibility of principal polarizations on products of two isogenous elliptic curves Maximilian Schmidt OriginalPaper Open access 14 May 2021 Pages: 403 - 422
A two-dimensional rationality problem and intersections of two quadrics Akinari HoshiMing-Chang KangAiichi Yamasaki OriginalPaper 15 May 2021 Pages: 423 - 437
Complete reducibility: variations on a theme of Serre Maike GruchotAlastair LitterickGerhard Röhrle OriginalPaper Open access 15 June 2021 Pages: 439 - 451
Lifting images of standard representations of symmetric groups Jeffrey Yelton OriginalPaper 27 May 2021 Pages: 453 - 481
Counting tropical rational space curves with cross-ratio constraints Christoph Goldner OriginalPaper Open access 15 June 2021 Pages: 483 - 523
Lie applicable surfaces and curved flats Francis BurstallMason Pember OriginalPaper Open access 21 April 2021 Pages: 525 - 533
\({\mathbb {Z}}_2^2\)-actions on Horikawa surfaces Vicente Lorenzo OriginalPaper 19 April 2021 Pages: 535 - 547
Three-dimensional maps and subgroup growth Rémi BottinelliLaura CiobanuAlexander Kolpakov OriginalPaper Open access 26 June 2021 Pages: 549 - 570
Uniform stable radius and Milnor number for non-degenerate isolated complete intersection singularities Tat Thang Nguyen OriginalPaper 30 June 2021 Pages: 571 - 589