49 citations · 240 across the 26 of their papers we have counts for
Showing 2017Show all
2 papers · 1 filter
math.DG2017★ 9 cited
A characterization of Zoll Riemannian metrics on the 2-sphere
Marco Mazzucchelli, Stefan Suhr
The simple length spectrum of a Riemannian manifold is the set of lengths of its simple closed geodesics. We prove a theorem claimed by Lusternik: in any Riemannian 2-sphere whose…
math.DG2017★ 3 cited
Smoothing causal functions
Patrick Bernard, Stefan Suhr
We describe, in the general setting of closed cone fields, the set of causal functions which can be approximated by smooth Lyapunov. We derive several consequences on causality the…