On Weingarten surfaces in Euclidean and Lorentzian 3-space (Q980901)

From the authors' abstract: Several uniqueness results for the space-like slices in certain Robertson-Walker space-times are proved under boundedness assumptions either on the mean curvature function of the space-like surface or on the restriction of the time coordinate on the surface when the mean curvature is a constant. In the nonparametric case, a uniqueness and a nonexistence result are proved for bounded entire solutions of some constant mean curvature space-like differential equations.