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Madelung constant

  1. Aug 18, 2009 #1
    Madelung constant is define like


    So I can always say

    [tex]A+X=-(A-X)[/tex] or [tex]-A=A[/tex]

    Can I sometimes problem with this?
  2. jcsd
  3. Aug 21, 2009 #2


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    There seems to be a problem... unless you want A=0.
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