4 papers
math.DG2023
The sub-Riemannian geometry of screw motions with constant pitch
Eduardo Hulett, Ruth Paola Moas, Marcos Salvai
We consider a family of Riemannian manifolds M such that for each unit speed geodesic gamma of M there exists a distinguished bijective correspondence L between infinitesimal trans…
math.DG2015
Conformal geometry of marginally trapped surfaces in
Eduardo Hulett
A spacelike surface is marginally trapped if its mean curvature vector is lightlike. On any oriented spacelike surface we show…
math.DG2011
Surfaces in with normal harmonic Gauss maps
Eduardo Hulett
We consider conformal immersions of Riemann surfaces in $\bb{S}^4$ and study their Gauss maps with values in the Grassmann bundle . The ene…
math.DG2009
Spacelike surfaces in De Ditter 3-space and their twistor lifts
Eduardo Hulett
We deal here with the geometry of the twistor fibration $\mathcal{Z} \to \bb{S}^3_1$ over the De Sitter 3-space. The total space is a five dimensional reductive homog…