Algebraic and Arithmetic Geometry Seminar

The Complexity of Higher Chow Groups

by James Lewis (University of Alberta)

Aula Magna (Department of Mathematics)

Aula Magna

Department of Mathematics


Let $X/{\mathbb C}$ be a smooth projective variety. We consider two integral invariants, one of which is the level of the Hodge cohomology algebra $H^*(X,{\mathbb C})$ and the other involving the complexity of the higher Chow groups ${\rm CH}^*(X,m;{\mathbb Q})$ for $m\geq 0$. We conjecture that these two invariants are the same and accordingly provide some strong evidence in support of this.