Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Davis' Convexity Theorem and Extremal Ellipsoids   We give a variety of uniqueness results for minimal ellipsoids circumscribing
and maximal ellipsoids inscribed into a convex body. Uniqueness follows from a
convexity or concavity criterion on the function used to measure the size of
the ellipsoid. Simple examples with non-unique minimal or maximal ellipsoids
conclude this article.

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The categories of this paper are: atom-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-ex
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The categories of this paper are: ao-sci
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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: hep-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: gr-qc
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The categories of this paper are: supr-con
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The categories of this paper are: comp-gas
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The categories of this paper are: q-alg
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The categories of this paper are: stat
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The categories of this paper are: funct-an
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The categories of this paper are: adap-org