21 citations · 33 across the 12 of their papers we have counts for
3 papers · 1 filter
Curvature-Free Margulis Lemma for Gromov-Hyperbolic Spaces
Gérard Besson, Gilles Courtois, Sylvestre Gallot +1
We prove curvature-free versions of the celebrated Margulis Lemma. We are interested by both the algebraic aspects and the geometric ones, with however an emphasis on the second an…
Closed, negatively curved Riemannian manifolds with a flat horosphere are hyperbolic
Gérard Besson, Gilles Courtois, Sa'ar Hersonsky
We prove that the existence of one flat horosphere in the universal cover of a closed, strictly quarter pinched, negatively curved Riemannian manifold of dimension n with n greater…
Isospectral finiteness on convex cocompact hyperbolic 3-manifolds
Gilles Courtois, Inkang Kim
In this paper we show that a given set of lengths of closed geodesics, there are only finitely many convex cocompact hyperbolic 3-manifolds with that specified length spectrum, hom…