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Displaying 141 – 160 of 229

The relational translators of the hyperspherical functional matrix.

Letic, Dusko, Cakic, Nenad, Davidovic, Branko (2010)

Advances in Difference Equations [electronic only]

The Re-nonnegative definite solutions to the matrix equation $A X B = C$

Qing Wen Wang, Chang Lan Yang (1998)

Commentationes Mathematicae Universitatis Carolinae

An $n \times n$ complex matrix $A$ is called Re-nonnegative definite (Re-nnd) if the real part of $x^{*} A x$ is nonnegative for every complex $n$ -vector $x$ . In this paper criteria for a partitioned matrix to be Re-nnd are given. A necessary and sufficient condition for the existence of and an expression for the Re-nnd solutions of the matrix equation $A X B = C$ are presented.

The restricted Toda chain, exponential Riordan arrays, and Hankel transforms.

Barry, Paul (2010)

Journal of Integer Sequences [electronic only]

The resultant of non-commutative polynomials

Aleksandra Lj. Erić (2008)

Matematički Vesnik

The ring of invariants of three $(3 \times 3)$ -matrices over a field of prime characteristic.

Lopatin, A.A. (2004)

Sibirskij Matematicheskij Zhurnal

The ring of upper triangular invariants as a module over the Dickson invariants.

H.E.A. Campbell, I.P. Hughes (1996)

Mathematische Annalen

The Robson cubics for matrix algebras with involution.

Rashkova, Tsetska (2008)

Acta Universitatis Apulensis. Mathematics - Informatics

The scattering matrix of a graph.

Mizuno, Hirobumi, Sato, Iwao (2008)

The Electronic Journal of Combinatorics [electronic only]

The semigroup of circulant Boolean matrices

Kim Ki-Hang Butler, Štefan Schwarz (1976)

Czechoslovak Mathematical Journal

The semigroup of fully indecomposable relations and Hall relations

Štefan Schwarz (1973)

Czechoslovak Mathematical Journal

The Sherman-Morrison formula and eigenvalues of a special bordered matrix.

Trenkler, G., Trenkler, D. (2005)

Acta Mathematica Universitatis Comenianae. New Series

The signless Laplacian separator of graphs.

You, Zhifu, Liu, Bolian (2011)

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

The signless Laplacian spectral radius of graphs with given number of cut vertices

Lin Cui, Yi-Zheng Fan (2010)

Discussiones Mathematicae Graph Theory

In this paper, we determine the graph with maximal signless Laplacian spectral radius among all connected graphs with fixed order and given number of cut vertices.

The Similarity Reduction of Matrices over a Skew Field.

Paul M. Cohn (1973)

Mathematische Zeitschrift

The Singular Values of Involutory and of Idempotent Matrices.

A.S. HOUSEHOLDER, J.A. CARPENTER (1963)

Numerische Mathematik

The singularity/nonsingularity problem for matrices satisfying diagonal dominance conditions formulated in terms of directed graphs.

Kolotilina, L.Yu. (2004)

Zapiski Nauchnykh Seminarov POMI

The Smith normal form of product distance matrices

R. B. Bapat, Sivaramakrishnan Sivasubramanian (2016)

Special Matrices

Let G = (V, E) be a connected graph with 2-connected blocks H1, H2, . . . , Hr. Motivated by the exponential distance matrix, Bapat and Sivasubramanian in [4] defined its product distance matrix DG and showed that det DG only depends on det DHi for 1 ≤ i ≤ r and not on the manner in which its blocks are connected. In this work, when distances are symmetric, we generalize this result to the Smith Normal Form of DG and give an explicit formula for the invariant factors of DG.

Currently displaying 141 – 160 of 229