Moduli Stacks of Bundles on Local Surfaces
arXiv:1110.0104 · doi:10.1007/978-3-319-06514-4_1
Abstract
We give an explicit groupoid presentation of certain stacks of vector bundles on formal neighborhoods of rational curves inside algebraic surfaces. The presentation involves a Möbius type action of an automorphism group on a space of extensions.
submitted upon invitation to the 2011 Mirror Symmetry and Tropical Geometry Conference (Cetraro, Italy) volume of the Springer Lecture Notes in Mathematics