Sheaves and principal G-bundles in positive characteristic -- Adrian Langer

The first part of the talk will be devoted to a construction of projective moduli space of semistable sheaves on a variety defined over an algebraically closed field (or over a good ring). Then I will talk about geometry of moduli spaces of sheaves on surfaces in positive characteristic. At the end I plan to talk about my joint work with T. Gomez, A. Schmitt and I. Sols on construction of moduli spaces of principal G-bundles in arbitrary characteristic.

Papers related to the subject of the talk are available at http://www.mimuw.edu.pl/~alan/research.html