Subgroup schemes of a reductive group


Mercoledi` 8 novembre alle ore 15 in Aula 1D50 Ekaterina Sopkina, post-doc presso il nostro Dipartimento, terra` una conferenza dal titolo SUBGROUP SCHEMES OF A REDUCTIVE GROUP.

- Abstract:
We describe subgroup schemes of a split reductive group that contain a maximaltorus, over a field of positive characteristic. This generalizes a classical result by A. Borel and J. Tits. The answer is expressed in terms of the corresponding root system and its Weyl group.

Rif. G. Carnovale