Oli Jones

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20232026

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Showing 2024 · math.GRShow all

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math.GR2024

Type VF for outer automorphism groups of large-type Artin groups

Oli Jones

Given a connected large-type Artin group $A_{Γ}$ , we introduce a deformation space $D$ . If $Γ$ is triangle-free, or has all labels at least 6, we show that this space is ca…

math.GR2024

Fixed subgroups in Artin groups

Oli Jones, Nicolas Vaskou

We study fixed subgroups of automorphisms of any large-type Artin group $A_{Γ}$ . We define a natural subgroup $Aut_{Γ} (A_{Γ})$ of $Aut (A_{Γ})$ , and for every $γ\in \mathr…