Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Instantons on the six-sphere and twistors   We consider the six-sphere S^6=G_2/SU(3) and its twistor space Z=G_2/U(2)
associated with the SU(3)-structure on S^6. It is shown that a Hermitian
Yang-Mills connection (instanton) on a smooth vector bundle over S^6 is
equivalent to a flat partial connection on a vector bundle over the twistor
space Z. The relation with Tian's tangent instantons on R^7 and their twistor
description are briefly discussed.

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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: comp-gas
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The categories of this paper are: acc-phys
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The categories of this paper are: nucl-ex
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The categories of this paper are: nucl-th
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The categories of this paper are: chem-ph
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The categories of this paper are: adap-org
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The categories of this paper are: funct-an
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The categories of this paper are: econ
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The categories of this paper are: stat
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The categories of this paper are: q-bio
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The categories of this paper are: ao-sci
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The categories of this paper are: solv-int
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The categories of this paper are: astro-ph
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The categories of this paper are: gr-qc