Hi(adsbygoogle = window.adsbygoogle || []).push({});

Why is it possible to be able to pick a spacelike 2 surface S that lies in a null hypersurface N? We know that all the tangents vectors to N are either spacelike or parrelel to the normal vector. I imagine we want to build up S as the surface that is tangent to all the spacelike vectors in N, but I'm not quite sure how to build this up.. A hint rather than the exact answer would be much appreciated (although I will be grateful for either!)

Thanks

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Null Hypersurface

Loading...

Similar Threads for Null Hypersurface |
---|

I Coordinate and proper time, null geodesic |

I Geometric meaning of complex null vector in Newman-Penrose |

A Interpretation of covariant derivative of a vector field |

I Principal null directions |

**Physics Forums | Science Articles, Homework Help, Discussion**