| Abstract: |
Right-angled Artin groups (RAAGs) span a range of groups from free
groups to free abelian groups. Thus, their (outer) automorphism
groups range from Out(\( F_n \)) to \( \text{GL}(n,\mathbb{Z}) \).
These two classes of groups have been extensively studied from a
geometric viewpoint, using the action of \( \text{GL}(n,\mathbb{Z}) \)
on homogeneous space on the one hand, and the action of Out(\( F_n \))
on Culler-Vogtmann's "Outer Space" on the other. I will talk about
joint work with Bregman and Vogtmann in which we intertwine these two
ideas to construct an analogue of Outer Space for arbitrary RAAGs.
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