Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Automorphisms and isomorphisms of Jha-Johnson semifields obtained from
  skew polynomial rings   We study the automorphisms of Jha-Johnson semifields obtained from an
invariant irreducible twisted polynomial $f\in K[t;\sigma]$, where
$K=\mathbb{F}_{q^n}$ is a finite field and $\sigma$ an automorphism of $K$ of
order $n$, with a particualr emphasis on inner automorphisms and the
automorphisms of Sandler and Hughes-Kleinfeld semifields. We include the
automorphisms of some Knuth semifields (which do not arise from skew polynomial
rings). Isomorphism between Jha-Johnson semifields are considered as well.

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The categories of this paper are: bayes-an
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The categories of this paper are: nucl-th
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The categories of this paper are: gr-qc
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The categories of this paper are: chem-ph
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The categories of this paper are: supr-con
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The categories of this paper are: cmp-lg
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The categories of this paper are: math-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: funct-an
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The categories of this paper are: acc-phys
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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: q-bio
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-fin