Thomas Haettel

activity

20132023

most citedThe 6-strand braid group is CAT(0)

20 citations · 61 across the 14 of their papers we have counts for

collaborators

Showing 2021Show all

3 papers · 1 filter

math.GR2021★ 2 cited

Locally elliptic actions, torsion groups, and nonpositively curved spaces

Thomas Haettel, Damian Osajda

Extending and unifying a number of well-known conjectures and open questions, we conjecture that locally elliptic (that is, every element has a bounded orbit) actions by automorphi…

math.GR2021

Lattices, injective metrics and the $K (π, 1)$ conjecture

Thomas Haettel

Starting with a lattice with an action of $Z$ or $R$ , we build a Helly graph or an injective metric space. We deduce that the $ℓ^{\infty}$ orthoscheme complex of…

math.MG2021

Injective metrics on buildings and symmetric spaces

Thomas Haettel

In this article, we show that the Goldman-Iwahori metric on the space of all norms on a fixed vector space satisfies the Helly property for balls. On the non-Archimedean side, we d…

Locally elliptic actions, torsion groups, and nonpositively curved spaces

Lattices, injective metrics and the K(π,1) conjecture

Injective metrics on buildings and symmetric spaces

Lattices, injective metrics and the $K (π, 1)$ conjecture