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Relationship of certain rings of infinite matrices over integers

Mario Petrich, Pedro V. Silva (2000)

Bollettino dell'Unione Matematica Italiana

Sia $N$ l'insieme degli interi non negativi e $Z$ l'anello degli interi. Sia $A$ l'anello delle matrici $N \times N$ su $Z$ che hanno solo un numero finito di cifre non nulle in ogni linea ed in ogni colonna. Sia $B$ il sottoanello generato da $X$ e $Y$ , dove $X$ (rispettivamente $Y$ ) è ottenuto dalla matrice identità muovendo gli 1 una posizione a destra (rispettivamente in giù). Sia pure $C$ il sottoanello di $A$ generato da $1 - X$ e $1 - Y$ . Infine sia $F$ il sottoanello delle matrici di $A$ che hanno solo un numero finito di cifre non nulle....

Remark to a problem on 0-1 matrices

Antonín Tuzar (1993)

Compositio Mathematica

Remarks on doubly substochastic rectangular matrices

Pavel Čihák (1970)

Commentationes Mathematicae Universitatis Carolinae

Remarks on eigenvalues of infinite matrices

Wojbor A. Woyczyński (1968)

Colloquium Mathematicae

Remarks on the rows and columns of $P$ in the matrix equation $A = P P^{*}$

Darald J. Hartfiel, Patricia L. Smith (1979)

Czechoslovak Mathematical Journal

Remarques sur les matrices orthogonales (resp. symétriques) à coefficients $p$ -adiques

Bertin Diarra (1990)

Annales scientifiques de l'Université de Clermont. Mathématiques

Répartition des zéros des fonctions $L$ et matrices aléatoires

Philippe Michel (2000/2001)

Séminaire Bourbaki

Reverses of the Golden-Thompson type inequalities due to Ando-Hiai-Petz.

Seo, Yuki (2008)

Banach Journal of Mathematical Analysis [electronic only]

Riordan arrays, orthogonal polynomials as moments, and Hankel transforms.

Barry, Paul (2011)

Journal of Integer Sequences [electronic only]

Robust stability of positive continuous-time linear systems with delays

Mikołaj Busłowicz (2010)

International Journal of Applied Mathematics and Computer Science

The paper is devoted to the problem of robust stability of positive continuous-time linear systems with delays with structured perturbations of state matrices. Simple necessary and sufficient conditions for robust stability in the general case and in the case of systems with a linear uncertainty structure in two sub-cases: (i) a unity rank uncertainty structure and (ii) nonnegative perturbation matrices are established. The problems are illustrated with numerical examples.

Rotation numbers for Jacobi matrices with matrix entries.

Schulz-Baldes, Hermann (2007)

Mathematical Physics Electronic Journal [electronic only]

Displaying 21 – 31 of 31

Currently displaying 21 – 31 of 31