1 citations · 1 across the 5 of their papers we have counts for
9 papers
On the Eigenvectors of Generalized Circulant Matrices
Enide Andrade, Dante Carrasco-Olivera, Cristina Manzaneda
In this paper, closed formulas for the eigenvectors of a particular class of matrices generated by generalized permutation matrices, named generalized circulant matrices, are prese…
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…
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…
Bounds for Different Spreads of Line and Total Graphs
E. Andrade, E. Lenes, E. Mallea +2
In this paper we explore some results concerning the spread of the line and the total graph of a given graph. In particular, it is proved that for an connected graph wi…
Lower bounds for Laplacian spread and relations with invariant parameters revisited
Enide Andrade, Maria Aguieiras A. de Freitas, María Robbiano +1
Let be an -graph and a nonempty proper subset of . Let $X^{c}=V\left( G\right) \ba…
New Bounds for the Signless Laplacian Spread
Enide Andrade, Geir Dahl, Laura Leal +1
Let be a simple graph. The signless Laplacian spread of is defined as the maximum distance of pairs of its signless Laplacian eigenvalues. This paper establishes some new b…