Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Kalb-Ramond field and Dirac-Kahler equation   Matrix and tensor formulations of the relativistic wave equation providing
description both an electromagnetic field (photon) and a massless Kalb-Ramond
field with the zero helicity (notoph) are given. It is shown that this equation
is a particular case of the Dirac-Kahler system.

27
The categories of this paper are: comp-gas
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The categories of this paper are: alg-geom
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The categories of this paper are: plasm-ph
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The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
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The categories of this paper are: solv-int
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The categories of this paper are: ao-sci
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The categories of this paper are: econ
11
The categories of this paper are: hep-lat
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The categories of this paper are: cond-mat
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The categories of this paper are: adap-org
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The categories of this paper are: nlin
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The categories of this paper are: acc-phys
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The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con