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Displaying 41 – 60 of 229

The distribution of eigenvalues of randomized permutation matrices

Joseph Najnudel, Ashkan Nikeghbali (2013)

Annales de l’institut Fourier

In this article we study in detail a family of random matrix ensembles which are obtained from random permutations matrices (chosen at random according to the Ewens measure of parameter $θ > 0$ ) by replacing the entries equal to one by more general non-vanishing complex random variables. For these ensembles, in contrast with more classical models as the Gaussian Unitary Ensemble, or the Circular Unitary Ensemble, the eigenvalues can be very explicitly computed by using the cycle structure of the permutations....

The Dittert's function on a set of nonnegative matrices.

Hwang, Suk Geun, Sohn, Mun-Go, Kim, Si-Ju (1990)

International Journal of Mathematics and Mathematical Sciences

The Drazin inverse through the matrix pencil approach and its application to the study of generalized linear systems with rectangular or square coefficient matrices.

Kalogeropoulos, Grigoris I., Karageorgos, Athanasios D., Pantelous, Athanasios A. (2008)

ELA. The Electronic Journal of Linear Algebra [electronic only]

The dual of the cone of all convex functions on a vector space.

J.H.B. Kemperman (1975)

Aequationes mathematicae

The Dual of the Cone of All Convex Functions on a Vector Space. (Short Communication).

J.H.B. Kemperman (1975)

Aequationes mathematicae

The eigenvalue derivatives of linear damped systems

Yeong-Jeu Sun (2003)

Control and Cybernetics

The eigenvalue distribution of block diagonally dominant matrices and block H-matrices.

Zhang, Cheng-Yi, Luo, Shuanghua, Huang, Aiqun, Xu, Chengxian (2010)

ELA. The Electronic Journal of Linear Algebra [electronic only]

The eigenvalue distribution on Schur complement of nonstrictly diagonally dominant matrices and general $H$ -matrices.

Zhang, Cheng-Yi, Luo, Shuanghua, Xu, Fengmin, Xu, Chengxian (2009)

ELA. The Electronic Journal of Linear Algebra [electronic only]

The Eigenvalues and Singular Values of Matrix Sums and Product, VIII: Displacement of Indices

R.C. THOMPSON, S. THERIANOS (1971)

Aequationes mathematicae

The eigenvalues of Hermite and rational spectral differentiation matrices.

J.A.C. Weidemann (1992)

Numerische Mathematik

The empirical distribution of the eigenvalues of a Gram matrix with a given variance profile

W. Hachem, P. Loubaton, J. Najim (2006)

Annales de l'I.H.P. Probabilités et statistiques

The equality cases for the inequalities of Oppenheim and Schur for positive semi-definite matrices

Xiao-Dong Zhang, Chang-Xing Ding (2009)

Czechoslovak Mathematical Journal

In this paper, necessary and sufficient conditions for equality in the inequalities of Oppenheim and Schur for positive semidefinite matrices are investigated.

The equation $X A + A X^{} = 0$ and the dimension of congruence orbits.

De Terán, Fernando, Dopico, Froilán M. (2011)

ELA. The Electronic Journal of Linear Algebra [electronic only]

The equations of conjugacy classes of nilpotent matrices.

J. Weyman (1989)

Inventiones mathematicae

The Euler-Fermat theorem for the semigroup of circulant Boolean matrices

Štefan Schwarz (1980)

Czechoslovak Mathematical Journal

The explicit representations of the Drazin inverses of a class of block matrices.

Bu, Changjiang, Zhang, Kuize (2010)

ELA. The Electronic Journal of Linear Algebra [electronic only]

The external vertices conjecture in case $n = 4$ .

Drury, S.W. (2004)

ELA. The Electronic Journal of Linear Algebra [electronic only]

The extremal ranks of $A_{1} - B_{1} X C_{1}$ subject to a pair of matrix equations

Yongge Tian, Yonghui Liu (2006)

Rendiconti del Seminario Matematico della Università di Padova

The factorization of an integral matrix into a product of two integral symmetric matrices I

Olga Taussky (1973)

Acta Arithmetica

The fan graph is determined by its signless Laplacian spectrum

Muhuo Liu, Yuan Yuan, Kinkar Chandra Das (2020)

Czechoslovak Mathematical Journal

Given a graph $G$ , if there is no nonisomorphic graph $H$ such that $G$ and $H$ have the same signless Laplacian spectra, then we say that $G$ is $Q$ -DS. In this paper we show that every fan graph $F_{n}$ is $Q$ -DS, where $F_{n} = K_{1} \lor P_{n - 1}$ and $n \geq 3$ .

Currently displaying 41 – 60 of 229

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