Abstract
In this paper, we consider a geometric circulant matrix with geometric sequence i.e. a geometric circulant matrix whose first row is ( g , gq , g q 2 , … , g q n − 1 ) , where g is a nonzero complex number and q is a nonzero real number. The determinant, the Euclidean norm and bounds for the spectral norm of such matrix are obtained. Also, in the case when such matrix is singular, we obtain the Moore-Penrose inverse of such matrix and show that the group inverse of such matrix does not exist (in most cases). The obtained results are illustrated by examples.
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