Speaker: Sergey Galkin
Title: Virtual Symmetries
Date: Sep 11, 2017, 18:00 - 20:00
Place: Room 306, Usacheva 6, Moscow
Abstract:
Sometimes in algebraic geometry there are situations when a group may not act on a space for some trivial reasons, but many of its subgroups can actually act, and moreover one can construct some structures and invariants that would follow from an action of a full group if it would exist. I will discuss a couple of concrete examples and possible explanations of this phenomenon.