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math.SP2019
On the spectra of -circulant matrices and applications
Enide Andrade, Luis Arrieta, María Robbiano
A g-circulant matrix of order n is defined as a matrix of order n where each row is a right cyclic shift in g-places to the preceding row. Using number theory, certain nonnegative…
math.SP2019★ 1 cited
New lower bounds for the energy of matrices and graphs
Enide Andrade, Juan Carmona, Geraldine Infante +1
Let be a Hermitian matrix. The energy of , , corresponds to the sum of the absolute values of its eigenvalues. In this work it is obtained two lower bounds f…