Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Restricted Open-Shell Kohn-Sham Theory IV: Expressions for N Unpaired
  Electrons   We present an energy expression for restricted open-shell Kohn-Sham theory
for N unpaired electrons and single-electron operators for all multiplets
formed from up to five unpaired electrons. It is shown that it is possible to
derive an explicit energy expression for all low-spin multiplets of systems
that exhibit neither radial nor cylindrical symmetry.

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The categories of this paper are: atom-ph
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The categories of this paper are: cs
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The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
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The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
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The categories of this paper are: econ
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The categories of this paper are: acc-phys
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The categories of this paper are: plasm-ph
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The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
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The categories of this paper are: comp-gas
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The categories of this paper are: quant-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: q-alg
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The categories of this paper are: hep-ph