K. Vogtmann

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20012025

most citedOn a theorem of Kontsevich

121 citations · 441 across the 31 of their papers we have counts for

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Showing 2019 · math.GRShow all

2 papers · 2 filters

math.GR2019★ 13 cited

The Euler characteristic of $Out (F_{n})$

Michael Borinsky, Karen Vogtmann

We prove that the rational Euler characteristic of $Out (F_{n})$ is always negative and its asymptotic growth rate is $Γ (n - \frac{3}{2}) / 2 π lo g^{2} n$ . This settles a…

math.GR2019★ 3 cited

Cube complexes and abelian subgroups of automorphism groups of RAAGs

Benjamin Millard, Karen Vogtmann

We construct free abelian subgroups of the group $U (A_{Γ})$ of untwisted outer automorphisms of a right-angled Artin group, thus giving lower bounds on the virtual cohomological dime…

The Euler characteristic of Out(Fn​)

Cube complexes and abelian subgroups of automorphism groups of RAAGs

The Euler characteristic of $Out (F_{n})$