134 citations · 268 across the 31 of their papers we have counts for
4 papers · 1 filter
Commensurability invariants for nonuniform tree lattices
Benson Farb, G. Christopher Hruska
We study nonuniform lattices in the automorphism group G of a locally finite simplicial tree X. In particular, we are interested in classifying lattices up to commensurability in G…
Separability of Solvable Subgroups in Linear Groups
Roger Alperin, Benson Farb
Let G be a finitely generated linear group over a field of characteristic 0. Suppose that every solvable subgroup of G is polycyclic. Then the claim is made that any solvable subgr…
Hidden symmetry and arithmetic manifolds
Benson Farb, Shmuel Weinberger
A "hidden symmetry" of a Riemannian manifold M is an isometry of a d-sheeted, 1<d<\infty, Riemannian cover of M which is not the lift of any isometry. In this paper we characterize…
K_g is not finitely generated
Daniel Biss, Benson Farb
We prove that for any genus g>1, the subgroup K_g of the mapping class group of a closed genus g surface generated by Dehn twists about separating curves is not finitely generated.