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

Mathematically precise formulation of Ehlers-Geren-Sachs theorem

  1. Dec 17, 2012 #1
    I would like to get a mathematically precise formulation of the Ehlers-Geren-Sachs theorem. I have heard that this theorem roughly tells us that the universe in total is described by a FLRW metric if there exists a set of fundamental observers, with respect to whom all observable properties of the Universe are isotropic. But this in my eyes is not a mathematically precise statement and I would like to see a rigorous mathematical theorem about differential-geometric properties of spacetimes. Can you give me a reference, where I can find it?
  2. jcsd
  3. Dec 17, 2012 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook