111 research outputs found

    Some Constacyclic Codes over Finite Chain Rings

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    For λ\lambda an nn-th power of a unit in a finite chain ring we prove that λ\lambda-constacyclic repeated-root codes over some finite chain rings are equivalent to cyclic codes. This allows us to simplify the structure of some constacylic codes. We also study the α+pβ\alpha +p \beta-constacyclic codes of length psp^s over the Galois ring GR(pe,r)GR(p^e,r)
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