Cohomology of ΣPOut(A_Γ) and ΣPAut(A_Γ) is free abelian with ranks from poset combinatorics, generated in degree 1, and the generalized Brownstein-Lee conjecture holds in dimension 2.
Wiedmer,Right-angled Artin groups as finite-index subgroups of their outer automorphism groups.Bull
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Cohomology of the pure symmetric automorphisms of right-angled Artin groups
Cohomology of ΣPOut(A_Γ) and ΣPAut(A_Γ) is free abelian with ranks from poset combinatorics, generated in degree 1, and the generalized Brownstein-Lee conjecture holds in dimension 2.