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Singularities in GR

  1. Nov 23, 2009 #1
    Singularities in GR are often associated with geodesic incompleteness.

    My question is what does it actually mean for a geodesic to be incomplete?
     
  2. jcsd
  3. Nov 23, 2009 #2
    From my vague understanding, geodesic incompleteness is when we can't extrapolate the function over all of space & time.
     
  4. Nov 24, 2009 #3
    yes but what about the t=0 big bang singularity. is this a singularity because we can only extrapolate geodesics as far back as to a time just after t=0 but we can't extend them to the t=0 region of spacetime itself and so the geodesics are incomplete?
     
  5. Nov 24, 2009 #4
    From what I understand of GR, yes.
     
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