9 papers
Zero-cycles on surfaces dominated by products of hyperelliptic curves
Jean-Louis Colliot-Thélène, Federico Scavia, Alexei Skorobogatov
Conditionally on the finiteness of the relevant Tate-Shafarevich groups, we prove a local-to-global result for zero-cycles of degree on the surfaces given by $y^2 = f_1(x_1)f_2…
Dichotomy for the p-primary Brauer-Manin obstruction in characteristic p
Christopher D. Lazda, Alexei N. Skorobogatov
Let X be a smooth, projective, geometrically integral variety over a global function field k of characteristic p. We show that if the unipotent Brauer group of X is zero, and the P…
Birational properties of word varieties
Tatiana Bandman, Boris Kunyavskii, Alexei N. Skorobogatov
We prove that the subvariety of given by the matrix equation , where is a word in two letters, is closely related to an explicit smooth conic bun…
On spectral sequences for semiabelian varieties over non-closed fields
Alexander Petrov, Alexei Skorobogatov
We give a new, short proof of the formula for the first potentially non-zero differential of the Hochschild--Serre spectral sequence for semiabelian varieties over non-closed field…
Hasse principle for intersections of two quadrics via Kummer surfaces
Adam Morgan, Alexei N. Skorobogatov
We prove new cases of the Hasse principle for Kummer surfaces constructed from 2-coverings of Jacobians of genus 2 curves, assuming finiteness of relevant Tate-Shafarevich groups.…
Brauer groups of abelian varieties over fields of finite characteristic
Livia Grammatica, Alexei N. Skorobogatov, Yuan Yang
We study the Brauer group of an abelian variety A over an algebraically closed field of characteristic p focusing on the p-primary torsion, the key part of which is a certain quasi…