作者单位:Fedor Bogomolov (1) (2) Ivan Cheltsov (2) (3) Frédéric Mangolte (4) Constantin Shramov (2) (5) Damiano Testa (6)
1. Courant Institute of Mathematical Sciences, New York University, 251 Mercer Str., New York, NY, 10012, USA 2. Laboratory of Algebraic Geometry, National Research University Higher School of Economics, 7 Vavilova Str., Moscow, Russia, 117312 3. School of Mathematics, The University of Edinburgh, Edinburgh, EH9 3JZ, UK 4. LUNAM Université, LAREMA, Université d’Angers, 49045, Angers, France 5. Steklov Mathematical Institute, 8 Gubkina Str., Moscow, Russia, 119991 6. Mathematics Institute, University of Warwick, Coventry, CV4 7AL, UK