%0 Journal Article
%T Singular points of lightlike hypersurfaces of the de Sitter space
%A Maks A. Akivis
%A Vladislav V. Goldberg
%J Mathematics
%D 1998
%I arXiv
%X The authors study singular points of lightlike hypersurfaces of the de Sitter space S^{n+1}_1 and the geometry of hypersurfaces and use them for construction of an invariant normalization and an invariant affine connection of lightlike hypersurfaces.
%U http://arxiv.org/abs/math/9806018v1