Symbol-triple distance of repeated-root constacyclic codes of prime power lengths

Let p be an odd prime, s and m be positive integers and λ be a nonzero element of . The λ-constacyclic codes of length p^s over  are linearly ordered under set theoretic inclusion as ideals of the chain ring . Using this structure, the symbol-triple distances of all such λ-constacyclic codes are established in this paper. All maximum distance separable symbol-triple constacyclic codes of length p^s are also determined as an application.