| Subgroups and quotients of automorphism groups of RAAGs |
| Ruth Charney and Karen Vogtmann |
| preprint |
We study subgroups and quotients of outer automorphsim groups of right-angled Artin groups (RAAGs). We prove that for all RAAGs, the outer automorphism group is residually finite and, for a large class of RAAGs, it satisfies the Tits alternative. We also investigate which of these automorphism groups contain non-abelian solvable subgroups. |