2 papers
math.AG2018
Unramified Brauer groups of conic bundle threefolds in characteristic two
Asher Auel, Alessandro Bigazzi, Christian Böhning +1
We establish a formula for computing the unramified Brauer group of tame conic bundle threefolds in characteristic 2. The formula depends on the arrangement and residue double cove…
math.AG2011
Linear bounds for levels of stable rationality
Fedor Bogomolov, Christian Böhning, Hans-Christian Graf von Bothmer
Let G be one of the groups SL_n C, Sp_2n C, SO_m C, O_m C, or G_2. For a generically free G-representation V, we say that N is a level of stable rationality for V/G if V/G x P^N is…