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Gradient Flow - Definition and Sources

  1. Apr 3, 2012 #1
    Hi all,

    I am struggling to find any elementary material on the "gradient flow of a functional" concept.

    From introductions in advanced papers I seem to have understood that, assigned a functional F (u), the gradient flow is charactwerized by an equation of the type Du / Dt = P u , where P is a differential operator related to the functional's Euler- Lagrange equation.

    I would like to understand more, but was surpsrisngly unable to find any sources on the Internet.
    Can anybody suggest a good starting reading?

    Many thanks for any help
     
  2. jcsd
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