Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Normality of closure of orthogonal nilpotent symmetric orbits   We study closures of conjugacy classes in the symmetric matrices of the
orthogonal group and we determine which one are normal varieties. In contrast
to the result for the symplectic group where all classes have normal closure,
there is only a relatively small portion of classes with normal closure. We
perform a combinatorial computation on top of the same methods used by
Kraft-Procesi and Ohta.

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The categories of this paper are: cs
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The categories of this paper are: atom-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: quant-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: acc-phys
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The categories of this paper are: econ
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The categories of this paper are: gr-qc
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The categories of this paper are: dg-ga
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The categories of this paper are: eess
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The categories of this paper are: funct-an
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The categories of this paper are: plasm-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: alg-geom
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The categories of this paper are: adap-org