Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Energy Losses of Magnetic Monopoles in Aluminum, Iron and Copper   The Energy Losses and Ranges of magnetic monopoles with magnetic charges
$1g_{D}$, $2g_{D}$, $3g_{D}$, $6g_{D}$ and $9g_{D}$ in Aluminum, Iron and in
Copper are computed, in the different regimes of velocities. The Restricted
Energy Losses of monopoles with magnetic charges $1g_{D}$, $2g_{D}$ and
$3g_{D}$ in Nuclear Track Detector is also given.

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The categories of this paper are: comp-gas
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-th
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The categories of this paper are: math-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: nlin
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The categories of this paper are: ao-sci
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The categories of this paper are: q-alg
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The categories of this paper are: q-fin
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The categories of this paper are: nucl-ex
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The categories of this paper are: astro-ph
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The categories of this paper are: stat
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The categories of this paper are: acc-phys
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The categories of this paper are: cond-mat
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The categories of this paper are: econ
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The categories of this paper are: math