Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Supersymmetric sigma-models, twistors, and the Atiyah-Hitchin metric   The Legendre transform and its generalizations, originally found in
supersymmetric sigma-models, are techniques that can be used to give
constructions of hyperkahler metrics. We give a twistor space interpretation to
the generalizations of the Legendre transform construction. The Atiyah-Hitchin
metric on the moduli space of two monopoles is used as a detailed example.

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The categories of this paper are: chem-ph
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The categories of this paper are: q-bio
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The categories of this paper are: atom-ph
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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: bayes-an
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The categories of this paper are: stat
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The categories of this paper are: cond-mat
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The categories of this paper are: cs
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The categories of this paper are: mtrl-th
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The categories of this paper are: quant-ph
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The categories of this paper are: math-ph
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The categories of this paper are: solv-int
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The categories of this paper are: nucl-th
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The categories of this paper are: patt-sol