The complexity of higher Chow groups

Abstract

Abstract 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 ${\mathrm {CH}}^*(X,m;{\mathbb Q})$ for $m\geq 0$ . We conjecture that these two invariants are the same and accordingly provide some strong evidence in support of this.