Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the arithmetical rank of a special class of minimal varieties   We study the arithmetical ranks and the cohomological dimensions of an
infinite class of Cohen-Macaulay varieties of minimal degree. Among these we
find, on the one hand, infinitely many set-theoretic complete intersections, on
the other hand examples where the arithmetical rank is arbitrarily greater than
the codimension.

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The categories of this paper are: q-bio
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The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
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The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-th
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The categories of this paper are: hep-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: stat
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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: dg-ga
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The categories of this paper are: astro-ph
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The categories of this paper are: comp-gas