2 papers
math.DG2017
Constant angle surfaces in Lorentzian Berger spheres
Irene I. Onnis, Apoena Passos Passamani, Paola Piu
In this work, we study helix spacelike and timelike surfaces in the Lorentzian Berger sphere $\s_{\varepsilon}^3$, that is the three-dimensional sphere endowed with a -parameter…
math.DG2016
Biconservative surfaces in BCV-spaces
Stefano Montaldo, Irene I. Onnis, Apoena Passos Passamani
Biconservative hypersurfaces are hypersurfaces with conservative stress-energy tensor with respect to the bienergy functional, and form a geometrically interesting family which inc…