15 citations · 50 across the 28 of their papers we have counts for
6 papers · 1 filter
Affine deformations of quasi-divisible convex cones
Xin Nie, Andrea Seppi
For any subgroup of obtained by adding a translation part to a subgroup of which is the fundamental group…
On the Gauss map of equivariant immersions in hyperbolic space
Christian El Emam, Andrea Seppi
Given an oriented immersed hypersurface in hyperbolic space , its Gauss map is defined with values in the space of oriented geodesics of , which…
Character varieties of a transitioning Coxeter 4-orbifold
Stefano Riolo, Andrea Seppi
In 2010, Kerckhoff and Storm discovered a path of hyperbolic 4-polytopes eventually collapsing to an ideal right-angled cuboctahedron. This is expressed by a deformation of the inc…
On the diffeomorphism type of Seifert fibered spherical 3-orbifolds
Mattia Mecchia, Andrea Seppi
It is well known that, among closed spherical Seifert three-manifolds, only lens spaces and prism manifolds admit several Seifert fibrations which are not equivalent up to diffeomo…
Examples of geometric transition in low dimensions
Andrea Seppi
The purpose of this note is to discuss examples of geometric transition from hyperbolic structures to half-pipe and Anti-de Sitter structures in dimensions two, three and four. As…
Anti-de Sitter geometry and Teichmüller theory
Francesco Bonsante, Andrea Seppi
The aim of these notes is to provide an introduction to Anti-de Sitter geometry, with special emphasis on dimension three and on the relations with Teichmüller theory, whose study…