Listar por autor "OSCAR ALFREDO PALMAS VELASCO"

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    • Null hypersurfaces in generalized Robertson-Walker spacetimes 

      JOSE MATIAS NAVARRO SOZA; OSCAR ALFREDO PALMAS VELASCO; DIDIER ADAN SOLIS GAMBOA
      We study the geometry of null hypersurfaces M in generalized Robertson–Walker spacetimes. First we characterize such null hypersurfaces as graphs of generalized eikonal functions over the fiber and use this characterization ...

    • On the geometry of null hypersurfaces in Minkowski space 

      JOSE MATIAS NAVARRO SOZA; OSCAR ALFREDO PALMAS VELASCO; DIDIER ADAN SOLIS GAMBOA
      The present work is divided into three parts. First we study the null hypersurfaces of the Minkowski space R1n+2, classifying all rotation null hypersurfaces in R1n+2. In the second part we start our analysis of the ...