Abstract:In this work, maximum sum-rank distance (MSRD) codes and linearized Reed-Solomon codes are extended to finite chain rings. It is proven that linearized Reed-Solomon codes are MSRD over finite chain rings, extending the known result for finite fields. For the proof, several results on the roots of skew polynomials are extended to finite chain rings. These include the existence and uniqueness of minimumdegree annihilator skew polynomials and Lagrange interpolator skew polynomials. An efficient Welch-Berlekamp de… Show more
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