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Umbilic points

  1. May 13, 2009 #1
    discuss how to find the umbilic points of an ellipsoid and their connection to lines of curvature.
     
  2. jcsd
  3. May 14, 2009 #2

    HallsofIvy

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    An "umbilic point" of a surface is a point where the principal curvatures are equal. How do you find the principal curvatures at a point on an ellipsoid?
     
  4. May 14, 2009 #3
    that's where I need help.
     
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