Cristina Manzaneda

activity

20172026

collaborators

6 papers

math.CO2026

On properties of the conformal circulant matrices

Cristina Manzaneda, Enide Andrade

In this paper, we introduce and study conformal permutation matrices. In particular, for a permutation $π_{s} \in S_{n}$ , we define the corresponding conformal permutation matrix $H_{π_…

math.SP2023

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…

math.SP2019

Hamiltonian Realization of spectra

C. B. Manzaneda, R. L. Soto

A $2 n \times 2 n$ real matrix $A$ is said to be a Hamiltonian matrix if $A^{T} J + J A = 0$ , where $J = (0 - I_{n} I_{n} 0)$ . Hamiltonian m…

math.SP2018

Block matrices and Guo's Index for block circulant matrices with circulant blocks

Enide Andrade, Cristina Manzaneda, Hans Nina +1

In this paper we deal with circulant and partitioned into $n$ -by- $n$ circulant blocks matrices and introduce spectral results concerning this class of matrices. The problem of find…

math.SP2017

Realizable Lists on a Class of Nonnegative Matrices

Cristina B. Manzaneda, Enide Andrade, María Robbiano

A square matrix of order n with $n \geq 2$ is called permutative matrix when all its rows (up to the frst one) are permutations of precisely its frst row. In this paper recalling sp…

math.SP2017

Realizable lists via the spectra of structured matrices

Cristina B. Manzaneda, Enide Andrade, María Robbiano

A square matrix of order $n$ with $n \geq 2$ is called a \textit{permutative matrix} or permutative when all its rows (up to the first one) are permutations of precisely its first r…