2 papers
math.AG2014
Special reductive groups over an arbitrary field
Mathieu Huruguen
A linear algebraic group G defined over a field k is called special if every G-torsor over every field extension of k is trivial. In 1958 Grothendieck classified special groups in…
math.AG2014
Log homogeneous compactifications of some classical groups
Mathieu Huruguen
We generalize in positive characteristics some results of Bien and Brion on log homogeneous compactifications of a homogeneous space under the action of a connected reductive group…