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On the Structure of the Linear Codes with a Given Automorphism (2309.05288v1)
Published 11 Sep 2023 in cs.IT, cs.DM, math.CO, and math.IT
Abstract: The purpose of this paper is to present the structure of the linear codes over a finite field with q elements that have a permutation automorphism of order m. These codes can be considered as generalized quasi-cyclic codes. Quasi-cyclic codes and almost quasi-cyclic codes are discussed in detail, presenting necessary and sufficient conditions for which linear codes with such an automorphism are self-orthogonal, self-dual, or linear complementary dual.