• Contact structures on null hypersurfaces 

      Atindogbé, Cyriaque; Gutierrez-Lopez, Manuel; Hounnonkpe, Raymond; Olea, Benjamín (Elsevier, 2022-08)
      The aim of this paper is to show how we can induce contact structures, contact metric structures and Sasaki structures on a null hypersurface from a rigging vector field. We give several explicit examples of this construction ...