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Listar por autor "Gimenez Manglano, María Isabel"

Mostrando ítems 1-11 de 11

Classes of general H-matrices

Bru, R.; Corral Ortega, Cristina; Gimenez Manglano, María Isabel; Mas Marí, José (Elsevier, 2008)

[EN] Let M(A) denote the comparison matrix of a square H-matrix A, that is, M(A) is an M-matrix. H-matrices such that their comparison matrices are non-singular are well studied in the literature. In this paper, we study ...
CMMSE algorithms for constructing doubly stochastic matrices with the relative gain array (combined matrix) A circle A(-T)

Fuster Capilla, Robert Ricard; Gasso Matoses, María Teresa; Gimenez Manglano, María Isabel (Springer-Verlag, 2019-08)

[EN] The Combined matrix of a nonsingular matrix A is defined by phi(A)=A T where degrees means the Hadamard (entrywise) product. If the matrix A describes the relation between inputs and outputs in a multivariable process ...
Combined matrices of sign regular matrices

Bru García, Rafael; Gasso Matoses, María Teresa; Gimenez Manglano, María Isabel; Santana-De Asis, Máximo De Jesús (Elsevier, 2016-06-01)

The combined matrix of a nonsingular matrix A is the Hadamard (entry wise) product C(A) = A ◦ (A−1)T . Since each row and column sum of C(A) is equal to one, the combined matrix is doubly stochastic when it is nonnegative. ...
Determinación y propiedades de H-matrices

Scott Guilleard, José Antonio (Universitat Politècnica de València, 2015-12-14)

[EN] The essential topic of this memory is the study of H-matrices as they were introduced by Ostrowski and hereinafter extended and developed by different authors. In this study three slopes are outlined: 1) the iterative ...
Diagonal entries of the combined matrix of a totally negative matrix

Bru García, Rafael; Gasso Matoses, María Teresa; Gimenez Manglano, María Isabel; Santana-De Asis, Máximo De Jesús (Taylor & Francis, 2017)

[EN] The combined matrix of a nonsingular matrix A is the Hadamard (entrywise) product . This paper deals with the characterization of the diagonal entries of a combined matrix C(A) of a given nonsingular real matrix A. A ...
Diagonal entries of the combined matrix of sign regular matrices of arder three

Gasso Matoses, María Teresa; Gil, Ivan; Gimenez Manglano, María Isabel; Santana-De Asis, Máximo De Jesús; Segura, Elaine (Universidad Católica del Norte, 2021-01)

[EN] The study of the diagonal entries of the combined matrix of a nonsingular matrix A has been considered by different authors for the classes of Mmatrices, positive definite matrices and totally positive (negative) ...
Is A in Cn,n a general H-matrix?

Bru García, Rafael; Gimenez Manglano, María Isabel; Hadjidimos, Apostolos (Elsevier, 2012-01)

H-matrices play an important role in the theory and applications of Numerical Linear Algebra. So, it is very useful to know whether a given matrix A E Cn,n, usually the coefficient of a complex linear system of algebraic ...
MATRICES COMBINADAS DE ALGUNOS TIPOS DE MATRICES

Santana de Asís, Máximo de Jesús (Universitat Politècnica de València, 2015-04-14)

[EN] Several authors have studied the Hadamard product or entry wise product of two matrices with di erent objectives. In particular, the product of a Hadamard matrix and the transpose of its inverse has proved useful in ...
Nonnegative combined matrices

Bru García, Rafael; Gasso Matoses, María Teresa; Gimenez Manglano, María Isabel; Santana, Maximo (Hindawi Publishing Corporation, 2014-04)

The combined matrix of a nonsingular real matrix 𝐴 is the Hadamard (entrywise) product 𝐴 ∘ (𝐴−1) 𝑇 . It is well known that row (column) sums of combined matrices are constant and equal to one. Recently, some results ...
Schur complement of general H-matrices

Bru García, Rafael; Corral Ortega, Cristina; Gimenez Manglano, María Isabel; Mas Marí, José (John Wiley & Sons, 2009)

[EN] It is well known that the Schur complement of some H-matrices is an H-matrix. In this paper, the Schur complement of any general H-matrix is studied. In particular, it is proved that the Schur complement, if it exists, ...
The Hadamard Product of a Nonsingular General H--Matrix and Its Inverse Transpose Is Diagonaly Dominant

Bru García, Rafael; Gasso Matoses, María Teresa; Gimenez Manglano, María Isabel; Scott, José A. (Hindawi Publishing Corporation, 2015)

[EN] We study the combined matrix of a nonsingular H-matrix. Iese matrices can belong to two diRerent H-matrices classes: the most common, invertible class, and one particular class named mixed class. DiRerent results ...