Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Constacyclic codes over F_q + u F_q + v F_q + u v F_q   Let q be a prime power and F_q be a finite field. In this paper, we study
constacyclic codes over the ring F_q+ u F_q +v F_q+ u v F_q, where u^2=u, v^2=v
and uv=vu. We characterized the generator polynomials of constacyclic codes and
their duals using some decomposition of this ring. We also define a gray map
and characterize the Gray images of self-dual cyclic codes over
F_q+uF_q+vF_q+uvF_q.

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The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
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The categories of this paper are: nucl-th
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The categories of this paper are: q-alg
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The categories of this paper are: supr-con
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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: chao-dyn
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The categories of this paper are: physics
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The categories of this paper are: funct-an
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The categories of this paper are: alg-geom
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The categories of this paper are: quant-ph
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The categories of this paper are: nlin
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The categories of this paper are: patt-sol
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The categories of this paper are: eess
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The categories of this paper are: econ