Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Symmetries of certain double integrals related to Hall effect devices   One encounters iterated elliptic integrals in the study of Hall effect
devices, as a result of conformal mappings of Schwarz--Christoffel type. Some
of these double elliptic integrals possess amazing symmetries with regard to
the physical parameters of the underlying Hall effect devices. We give a
unified mathematical treatment of such symmetric double integrals, in the
context of Hall effect devices with three and four contacts.

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The categories of this paper are: econ
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The categories of this paper are: eess
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The categories of this paper are: hep-ex
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The categories of this paper are: bayes-an
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The categories of this paper are: adap-org
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The categories of this paper are: solv-int
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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: physics
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The categories of this paper are: plasm-ph
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The categories of this paper are: cs
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The categories of this paper are: astro-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: cond-mat
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The categories of this paper are: q-fin
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The categories of this paper are: funct-an