Add to ORKGIntroduction and definitions. A conference matrix of order n is a square matrix C with zeros on the diagonal and zbl elsewhere, which satisfies the orthogonality condition CC T = (n -1)1. If in addition C is symmetric, C
Balonin, N. A.. & Seberry, J. (2014). A review and new symmetric conference matrices. Informatsi...
AbstractThe first infinite families of symmetric designs were obtained from finite projective geomet...
AbstractAn n×n matrix is called an N-matrix if all its principal minors are negative. In this paper,...
There exist at least 4 nonisomorphic projective planes of order 9. They determine 1+ 2 + 2 + 2 = 7 n...
A conference matrix of order $n$ is an $n\times n$ matrix $C$ with diagonal entries $0$ and off-diag...
AbstractThe problem of finding a regular n-dimensional crosspolytope (or simplex) of maximal volume ...
summary:Suppose that $A$ is a real symmetric matrix of order $n$. Denote by $m_A(0)$ the nullity of ...
AbstractThis paper presents a brief survey of some of the recent results on combinatorially symmetri...
AbstractA characterization of a class of symmetric (0, 1) matrices A such that AP is a symmetric mat...
We demonstrate that if there exists a real symmetric conference matrix of order n, then there exists...
The existence of Szekeres difference sets, X and Y, of size 2f with y E Y = -y E Y, where q = 4f + 1...
AbstractWe characterize skew-symmetric {1,0,−1}-matrices with a certain combinatorial property. In p...
We introduce a new class of structured symmetric matrices by extending the notion of perfect elimina...
AbstractIn connection with the problem of finding the best projections of k-dimensional spaces embed...
The symmetric M-matrix and symmetric M0-matrix completion problems are solved and results of Johnson...
Balonin, N. A.. & Seberry, J. (2014). A review and new symmetric conference matrices. Informatsi...
AbstractThe first infinite families of symmetric designs were obtained from finite projective geomet...
AbstractAn n×n matrix is called an N-matrix if all its principal minors are negative. In this paper,...
There exist at least 4 nonisomorphic projective planes of order 9. They determine 1+ 2 + 2 + 2 = 7 n...
A conference matrix of order $n$ is an $n\times n$ matrix $C$ with diagonal entries $0$ and off-diag...
AbstractThe problem of finding a regular n-dimensional crosspolytope (or simplex) of maximal volume ...
summary:Suppose that $A$ is a real symmetric matrix of order $n$. Denote by $m_A(0)$ the nullity of ...
AbstractThis paper presents a brief survey of some of the recent results on combinatorially symmetri...
AbstractA characterization of a class of symmetric (0, 1) matrices A such that AP is a symmetric mat...
We demonstrate that if there exists a real symmetric conference matrix of order n, then there exists...
The existence of Szekeres difference sets, X and Y, of size 2f with y E Y = -y E Y, where q = 4f + 1...
AbstractWe characterize skew-symmetric {1,0,−1}-matrices with a certain combinatorial property. In p...
We introduce a new class of structured symmetric matrices by extending the notion of perfect elimina...
AbstractIn connection with the problem of finding the best projections of k-dimensional spaces embed...
The symmetric M-matrix and symmetric M0-matrix completion problems are solved and results of Johnson...
Balonin, N. A.. & Seberry, J. (2014). A review and new symmetric conference matrices. Informatsi...
AbstractThe first infinite families of symmetric designs were obtained from finite projective geomet...
AbstractAn n×n matrix is called an N-matrix if all its principal minors are negative. In this paper,...