G-equivalence in group algebras and minimal abelian codes

Details G-equivalence in group algebras and minimal abelian codes G-equivalence in group algebras and minimal abelian codes

2012-03-26

arxiv.org/abs/1203.5742v1

Computer Science

Information Theory

8 pages, 4 tables

Scientific paper

Let G be a finite abelian group and F a field such that char(F) does not divide |G|. Denote by FG the group algebra of G over F. A (semisimple) abelian code is an ideal of FG. Two codes I and J of FG are G-equivalent if there exists an automorphism of G whose linear extension to FG maps I onto J In this paper we give a necessary and sufficient condition for minimal abelian codes to be G-equivalent and show how to correct some results in the literature.

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