119 citations · 461 across the 49 of their papers we have counts for
9 papers · 2 filters
Double Veronese cones with 28 nodes
Hamid Abban, Ivan Cheltsov, Jihun Park +1
We study nodal del Pezzo 3-folds of degree (also known as double Veronese cones) with singularities, which is the maximal possible number of singularities for such varieti…
Finite groups of bimeromorphic selfmaps of uniruled Kähler threefolds
Yuri Prokhorov, Constantin Shramov
We classify uniruled compact Kähler threefolds whose groups of bimeromorphic selfmaps do not have Jordan property.
Fiberwise bimeromorphic maps of conic bundles
Constantin Shramov
Given a holomorphic conic bundle without sections, we show that finite groups acting by its fiberwise bimeromorphic transformations are bounded. This provides an analog of a simila…
Bounded automorphism groups of compact complex surfaces
Yuri Prokhorov, Constantin Shramov
We classify compact complex surfaces whose groups of bimeromorphic selfmaps have bounded finite subgroups. We also prove that the stabilizer of a point in the automorphism group of…
Birational automorphisms of Severi-Brauer surfaces
Constantin Shramov
We prove that a finite group acting by birational automorphisms of a non-trivial Severi-Brauer surface over a field of characteristic zero contains a normal abelian subgroup of ind…
Finite groups acting on elliptic surfaces
Constantin Shramov
We show that automorphism groups of Hopf and Kodaira surfaces have unbounded finite subgroups. For elliptic fibrations on Hopf, Kodaira, bielliptic, and K3 surfaces, we make some o…