Theodore Weisman

activity

20242026

collaborators

3 papers

math.DS2026

Stability for boundary actions of cocompact lattices in Euclidean buildings

Thang Nguyen, Theodore Weisman

When $X$ is a locally compact Euclidean building, the isometry group of $X$ acts by homeomorphisms on the space of $k$ -simplices in the visual boundary of $X$ . We consider perturba…

math.GT2025

Dehn filling in semisimple Lie groups

Theodore Weisman

We generalize one part of Thurston's hyperbolic Dehn filling theorem to arbitrary-rank semisimple Lie groups by showing that certain deformations of extended geometrically finite s…

math.GR2024

Singular value gap estimates for free products of semigroups

Konstantinos Tsouvalas, Theodore Weisman

We establish lower estimates for singular value gaps of free products of $1$ -divergent semigroups $Γ_{1}, Γ_{2} \subset GL_{d} (K)$ which are in ping-pong position. As an…