Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Things that do not depend on the choice of Cauchy surface

  1. Nov 6, 2015 #1

    naima

    User Avatar
    Gold Member

    A Cauchy surface is a 3d spacelike slice of spacetime.
    Could you read the definition (17) p18
    the author says that "one can proove that ##\sigma## does not depend on the choice of the Cauchy surface because the functions obey the law of motion."
    Could you elaborate?
    Thanks

    Could any one add "h" in the title (choice)?
     
  2. jcsd
  3. Nov 7, 2015 #2

    naima

    User Avatar
    Gold Member

    Sorry
    I found the proof several lines below!
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook