We investigate the existence of integer matrices B satisfying the equation BBT = rI + sJ where T denotes transpose, r and s are integers, I is the identity matrix and J is the matrix with every element +1
AbstractThe integer m × n matrices A = (aij), B = (bij) are said to be equivalent if aij = ui + bij ...
In this paper we first recall some properties of triangle Toeplitz matrices of the Banach algebra Sr...
AbstractLet Z be a matrix of order n, and suppose that the elements of Z consist of only two element...
We investigate the existence of integer matrices B satisfying the equation BBT = rI + sJ where T den...
AbstractThe existence of n×b matrices A of nonnegative integers satisfying AJ=bJ, JA=nJ, and AAT=bI+...
AbstractFor matrices with algebraic integer entries, this paper studies: (i) completions with prescr...
SIGLEAvailable from British Library Document Supply Centre- DSC:7673.7004(85/32) / BLDSC - British L...
AbstractDenumerably infinite matrices are introduced for the representation of combinatorial quantit...
AbstractThe incidence matrix of a (υ, k, λ)-design is a (0, 1)-matrix A of order υ that satisfies th...
AbstractThis paper investigates the matrix equation A2=dI+λJ, where A is a rational circulant. Here ...
AbstractWe discuss integer matrices B of odd order ν which satisfy BT = ± B, BBT = vI − J, BJ = 0 Ma...
AbstractIf A and B are square matrices such that AB=I, then BA=I automatically follows. We prove a c...
The linear complementarity problem is that of finding an n x 1 vector z such that, Mz + q 2 0, z 2 0...
AbstractWe determine all square matrices of order n which satisfy the difference equation hi−1,j+hi+...
AbstractThis paper studies the matrix equation Al + Al+k = Jn, where l,k are nonnegative integers, J...
AbstractThe integer m × n matrices A = (aij), B = (bij) are said to be equivalent if aij = ui + bij ...
In this paper we first recall some properties of triangle Toeplitz matrices of the Banach algebra Sr...
AbstractLet Z be a matrix of order n, and suppose that the elements of Z consist of only two element...
We investigate the existence of integer matrices B satisfying the equation BBT = rI + sJ where T den...
AbstractThe existence of n×b matrices A of nonnegative integers satisfying AJ=bJ, JA=nJ, and AAT=bI+...
AbstractFor matrices with algebraic integer entries, this paper studies: (i) completions with prescr...
SIGLEAvailable from British Library Document Supply Centre- DSC:7673.7004(85/32) / BLDSC - British L...
AbstractDenumerably infinite matrices are introduced for the representation of combinatorial quantit...
AbstractThe incidence matrix of a (υ, k, λ)-design is a (0, 1)-matrix A of order υ that satisfies th...
AbstractThis paper investigates the matrix equation A2=dI+λJ, where A is a rational circulant. Here ...
AbstractWe discuss integer matrices B of odd order ν which satisfy BT = ± B, BBT = vI − J, BJ = 0 Ma...
AbstractIf A and B are square matrices such that AB=I, then BA=I automatically follows. We prove a c...
The linear complementarity problem is that of finding an n x 1 vector z such that, Mz + q 2 0, z 2 0...
AbstractWe determine all square matrices of order n which satisfy the difference equation hi−1,j+hi+...
AbstractThis paper studies the matrix equation Al + Al+k = Jn, where l,k are nonnegative integers, J...
AbstractThe integer m × n matrices A = (aij), B = (bij) are said to be equivalent if aij = ui + bij ...
In this paper we first recall some properties of triangle Toeplitz matrices of the Banach algebra Sr...
AbstractLet Z be a matrix of order n, and suppose that the elements of Z consist of only two element...
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