English

Chern Character for Global Matrix Factorizations

Algebraic Geometry 2012-09-26 v1

Abstract

We give a formula for the Chern character on the DG-category of global matrix factorizations on a smooth scheme XX with superpotential wΓ(OX)w\in \Gamma(\mathcal{O}_X). Our formula takes values in a Cech model for Hochschild homology. Our methods may also be adapted to get an explicit formula for the Chern character for perfect complexes of sheaves on XX taking values in right derived global sections of the De-Rham algebra. Along the way we prove that the DG version of the Chern character coincides with the classical one for perfect complexes.

Keywords

Cite

@article{arxiv.1209.5686,
  title  = {Chern Character for Global Matrix Factorizations},
  author = {David Platt},
  journal= {arXiv preprint arXiv:1209.5686},
  year   = {2012}
}
R2 v1 2026-06-21T22:10:58.576Z