seddik, Attallahabdelhafid, GherabiSupervisor: Lakhdar: Heboub2025-07-082025-07-082024-06-15https://repository.univ-msila.dz/handle/123456789/46823This work focuses on the theory of error-correcting codes, specifically the investigation of cyclic codes A cyclic code of length N over the finite field F can be defined as a principal ideal of the quotient ring R= F[x]/(x-1) The main objective of this memory is the study of LCD cyclic codes.enLinear and cyclic codesLCD cyclic codesThesis