Right Angled Artin Groups and partial commutation, old and new

Abstract

We compute the $p$-central and exponent-$p$ series of all right angled Artin groups, and compute the dimensions of their subquotients. We also describe their associated Lie algebras, and relate them to the cohomology ring of the group as well as to a partially commuting polynomial ring and power series ring. We finally show how the growth series of these various objects are related to each other.

v3: updated name of author (Henrike Härer, née Runde), improved exposition with more details of several proofs. Added remark on homology gradient computation