Výsledky vyhledávání - "Cristina B. Manzaneda"

On circulant like matrices properties involving Horadam, Fibonacci, Jacobsthal and Pell numbers

Autor: Dante Carrasco-Olivera, Enide Andrade, Cristina B. Manzaneda

Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP

In this work a new type of matrix called circulant-like matrix is introduced. This type of matrix includes the classical k-circulant matrix, introduced in [4] , in a natural sense. Its eigenvalues and its inverse and some other properties are studied

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b099575ace55d487e69dd95ef3058859

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Realizable lists via the spectra of structured matrices

Autor: María Robbiano, Cristina B. Manzaneda, Enide Andrade

Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP

A square matrix of order n with n ≥ 2 is called a permutative matrix or permutative when all its rows (up to the first one) are permutations of precisely its first row. In this paper, the spectra of a class of permutative matrices are studied. In p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e729e31ce11fd8f94171ff7d4bcccb8
https://doi.org/10.1016/j.laa.2017.08.007

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

Autor: Cristina B. Manzaneda, Enide Andrade, María Robbiano, Hans Nina

Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP

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 finding lists of complex numbers corresponding to a set of eigenvalues of a no

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2838bcc261a181712bab4cd700a712a
http://arxiv.org/abs/1804.09704

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Realizable Lists on a Class of Nonnegative Matrices

Autor: María Robbiano, Cristina B. Manzaneda, Enide Andrade

Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP

A square matrix of order n with n ≥ 2 is called permutative matrix when all its rows are permutations of the first row. In this paper recalling spectral results for partitioned into 2-by-2 symmetric blocks matrices sufficient conditions on a given

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e0352a8eb773b25679c63c19ba8b3a10

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Normal nonnegative realization of spectra

Autor: Ana I. Julio, Ricardo Soto, Cristina B. Manzaneda

Publikováno v: Linear and Multilinear Algebra. 63:1204-1215

The nonnegative inverse eigenvalue problem is the problem of finding necessary and sufficient conditions for the existence of an entrywise nonnegative matrix A with prescribed spectrum. This problem remains open for . If the matrix A is required to b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ee18cde4634a7ee2f2c5945ddef42de9
https://doi.org/10.1080/03081087.2014.924513

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On nonnegative realization of partitioned spectra

Autor: Cristina B. Manzaneda, Oscar Rojo, Ricardo Soto

Publikováno v: ELECTRONIC JOURNAL OF LINEAR ALGEBRA
Artículos CONICYT
CONICYT Chile
instacron:CONICYT

We consider partitioned lists of real numbers � = {�1,�2,...,�n}, and give efficient and constructive sufficient conditions for the existence of nonnegative and symmetric nonnegative matrices with spectrum �. Our results extend the ones giv

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a8b5c621e4d4d1ba0cf6a1d2e47702c
https://doi.org/10.13001/1081-3810.1457

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Nonnegative realization of complex spectra

Autor: Mario Salas, Cristina B. Manzaneda, Ricardo Soto

Publikováno v: Scopus-Elsevier
ELECTRONIC JOURNAL OF LINEAR ALGEBRA
Artículos CONICYT
CONICYT Chile
instacron:CONICYT

We consider a list of complex numbers ¤ = {¸1, ¸2, . . . , ¸n} and give a simple and efficient sufficient condition for the existence of an n × n nonnegative matrix with spectrum ¤. Our result extends a previous one for a list of real numbers g

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fae1599f43c3b5448d95daa2d5e400b5
https://doi.org/10.13001/1081-3810.1396

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