English

Inertial Chow rings of toric stacks

Algebraic Geometry 2016-12-22 v1

Abstract

For any vector bundle VV on a toric Deligne-Mumford stack \ix\ix the formalism of \cite{EJK:16} defines two intertial products V+\star_{V^{+}} and V\star_{V^{-}} on the Chow group of the inertia stack. We give an explicit presentation for the integral V+\star_{V^+} and V\star_{V^-} Chow rings, extending earlier work of Boris-Chen-Smith \cite{BCS:05} and Jiang-Tsen \cite{JiTs:10} in the orbifold Chow ring case, which corresponds to V=0V = 0. We also describe an {\em asymptotic} product on the rational Chow group of the inertia stack obtained by letting the rank of the bundle VV go to infinity.

Keywords

Cite

@article{arxiv.1612.07107,
  title  = {Inertial Chow rings of toric stacks},
  author = {Thomas Coleman and Dan Edidin},
  journal= {arXiv preprint arXiv:1612.07107},
  year   = {2016}
}