Virtual classes for hypersurfaces via two-periodic complexes
arXiv:1811.12298
Abstract
These expository notes are based on a series of lectures given at the May 2018 Snowbird workshop, Crossing the Walls in Enumerative Geometry. We give an introductory treatment of the notion of a virtual fundamental class in algebraic geometry, and describe a new construction of the virtual fundamental class for Gromov-Witten theory of a hypersurface. The results presented here are based on joint work with I. Ciocan-Fontanine, D. Favero, J. Guéré, and B. Kim.
To appear in Singularities, Mirror Symmetry, and the Gauged Linear Sigma Model. Many changes based on referee suggestions