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Riemann invariant

  1. Oct 24, 2010 #1
    Can someone tell me what a riemann invariant is in general terms please? i cant find it anywhere!

    thanks, lav
  2. jcsd
  3. Oct 24, 2010 #2
    This book came up immediately in a Google search. They are functions of various contractions of the Riemann tensor.
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