On codes overZ_m(Corresp.)

The factorization of Abelian codes over
Z_{m}
, i.e., ideals in
Z_{m},G,G
a finite Abelian group, corresponding to a factorization of
m
and that of G as a product of cyclic groups are considered. Quasi-Abelian codes over
Z_{m}
are considered and it is shown that every quasi-Abelian code over
Z_{m}
is a direct sum of Abelian codes over
Z_{m}
. A factorization of Gray codes over
Z_{m}
is also considered.