Enumerating finite Quot Schemes on Curves and Surfaces
Let X be a smooth projective curve of postive genus or else a del Pezzo surface and let Q(V,c) be the Grothendieck Quot scheme associated to a vector bundle V and a Chern class c (of the quotient) on X. For some choices of V and c this is a finite, reduced scheme that is therefore something we might enumerate. When X is a curve this was done by Marian and Oprea, and the answer is given by the Verlinde formula. When X is a del Pezzo surface, there seems to be a similar connection with Goettsche-type formulas that begs a deeper understanding. This is joint work with Thomas Goller and Drew Johnson.