3 papers
math.SG2020
ECH embedding obstructions for rational surfaces
Julian Chaidez, Ben Wormleighton
Let be a smooth rational surface or a possibly singular toric surface with ample divisor . We show that a family of ECH-based, algebro-geometric invariants $c^{\text{alg…
math.AG2019
Walls for -Hilb via Reid's Recipe
Ben Wormleighton
The three-dimensional McKay correspondence seeks to relate the geometry of crepant resolutions of Gorenstein -fold quotient singularities with the representatio…
math.CO2018
Quasi-period collapse for duals to Fano polygons: an explanation arising from algebraic geometry
Alexander M. Kasprzyk, Ben Wormleighton
The Ehrhart quasi-polynomial of a rational polytope is a fundamental invariant counting lattice points in integer dilates of . The quasi-period of this quasi-polynomial divi…