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math.DG2014
Compact spacelike surfaces whose mean curvature function satisfies a nonlinear inequality in a 3-dimensional Generalized Robertson-Walker spacetime
Alfonso Romero, Rafael M. Rubio
Spacelike surfaces in Generalized Robertson-Walker spacetimes whose mean curvature function satisfies a natural nonlinear inequality are analyzed. Several uniqueness and nonexisten…
math.DG2012★ 2 cited
On spacelike surfaces in 4-dimensional Lorentz-Minkowski spacetime through a lightcone
Francisco J. Palomo, Alfonso Romero
On any spacelike surface in a lightcone of four dimensional Lorentz-Minkowski space a distinguished smooth function is considered. It is shown how both extrinsic and intrinsic geom…