3 papers
math.DG2021
A remark on one-harmonic maps from a Hadamard surface of pinched negative curvature to the hyperbolic plane
François Fillastre, Andrea Seppi
We show that every one-harmonic map, in the sense of Trapani and Valli, from a Hadamard surface of pinched negative curvature to has image the interior of the convex…
math.GT2020
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…
math.DG2018
Entire surfaces of constant curvature in Minkowski 3-space
Francesco Bonsante, Andrea Seppi, Peter Smillie
This paper concerns the global theory of properly embedded spacelike surfaces in three-dimensional Minkowski space in relation to their Gaussian curvature. We prove that every regu…