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Homework Help: Integral centers in Hartree Fock

  1. Jul 11, 2007 #1

    I am looking at the integrals in HF - I am a little puzzled about the use of the word center.

    F.ex. two electron integrals on different center - it that electron belonging to different atom A and B?

    Than it mentions three- and four center - how to interpreted center?

    Thanks in advance

    best regards
  2. jcsd
  3. Jul 13, 2007 #2

    I guess that centers are often atom coordinates when using gaussian functions but it is not necessary atomic coordinates when using Slater functions?
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