70 citations · 480 across the 69 of their papers we have counts for
4 papers · 2 filters
Chimneys, leopard spots, and the identities of Basmajian and Bridgeman
Danny Calegari
We give a simple geometric argument to derive in a common manner orthospectrum identities of Basmajian and Bridgeman. Our method also considerably simplifies the determination of t…
Bridgeman's orthospectrum identity
Danny Calegari
We give a short derivation of an identity of Bridgeman concerning orthospectra of hyperbolic surfaces.
Immersed surfaces in the modular orbifold
Danny Calegari, Joel Louwsma
A hyperbolic conjugacy class in the modular group PSL(2,Z) corresponds to a closed geodesic in the modular orbifold. Some of these geodesics virtually bound immersed surfaces, and…
On fibered commensurability
Danny Calegari, Hongbin Sun, Shicheng Wang
This paper initiates a systematic study of the relation of commensurability of surface automorphisms, or equivalently, fibered commensurability of 3-manifolds fibering over the cir…