Some results on certain generalized circulant matrices.

In this paper a particular partition on blocks of generalized ( h, r)-circulant matrices is determined. We obtain a characterization of generalized ( h, r)-circulant matrices and get some results on the values of the permanent and also on the determination of the eigenvalues of r-circulant matrices. At last, a lower bound for the permanent of these matrices is achieved. [ABSTRACT FROM AUTHOR]