Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Moduli spaces of quadratic complexes and their singular surfaces   We construct the coarse moduli space $\cM_{qc}(\sigma)$ of quadratic line
complexes with a fixed Segre symbol $\sigma$ as well as the moduli space
$\cM_{ss}(\sigma)$ of the corresponding singular surfaces. We show that the map
associating to a quadratic line complex its singular surface induces a morphism
$\pi: \cM_{qc}(\sigma) \ra \cM_{ss}(\sigma)$. Finally we deduce that the
varieties of cosingular quadratic line complexes are almost always curves.

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The categories of this paper are: q-fin
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The categories of this paper are: comp-gas
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The categories of this paper are: econ
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The categories of this paper are: nlin
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The categories of this paper are: solv-int
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The categories of this paper are: ao-sci
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The categories of this paper are: nucl-th
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The categories of this paper are: astro-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: cond-mat
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The categories of this paper are: math-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: q-alg
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The categories of this paper are: atom-ph