Some Results on Images of a Class of λ-Constacyclic Codes Over Finite Fields

Abstract

In this paper, we show that any λ-constacyclic code over F q m is a λ-constacyclic code over F q under some special maps. Moreover, we show that the images of these λ−constacyclic codes can be put into the concatenated form. INDEX TERMS λ-constacyclic codes, images of maps, concatenated codes.