Dan Edidin: Strong regular embeddings and the geometry of hypertoric stacks
Time: Wed 2014-10-22 13.15 - 14.15
Location: Room 3418, Institutionen för matematik, KTH
Participating: Dan Edidin, University of Missouri
We explain how the notion of “strong regular embeddings” can be used to compare the geometry of a stack to that of a regularly embedded substack. This theory can be applied to understand the relationship between singular hypertoric varieties and singular Lawrence toric varieties. While this talk is about stacks, the motivating ideas come from simple observations about invariant rings for actions of finite groups.