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|Title:||On matrix-product structure of repeated-root constacyclic codes over finite fields|
Hai Q. Dinh
Fang Wei Fu
|Abstract:||© 2019 Elsevier B.V. For any prime number p, positive integers m,k,n, where n satisfies gcd(p,n)=1, and for any non-zero element λ0 of the finite field Fpm of cardinality pm, we prove that any λ0pk-constacyclic code of length pkn over the finite field Fpm is monomially equivalent to a matrix-product code of a nested sequence of pkλ0-constacyclic codes with length n over Fpm. As an application, we completely determine the Hamming distances of all negacyclic codes of length 7⋅2l over F7 for any integer l≥3.|
|Appears in Collections:||CMUL: Journal Articles|
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