The paper re-derives the known structure of simple-root constacyclic codes over finite chain rings using primitive idempotents, but its new self-duality characterization is incomplete and appears flawed.
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Primitive Idempotents and Constacyclic Codes over Finite Chain Rings
The paper re-derives the known structure of simple-root constacyclic codes over finite chain rings using primitive idempotents, but its new self-duality characterization is incomplete and appears flawed.