AbstractWeakly sign-symmetric matrices have non-negative principal minors and non-negative products of symmetrically placed pairs of almost-principal minors. A necessary condition is proved for such a matrix to have as rank a given positive integer. Several characterizations are given of those weakly sign-symmetric matrices for which the generalized Hadamard inequality holds
AbstractWe show that a square matrix A with at least one positive entry and all principal minors neg...
AbstractThe relation between positivity of principal minors, sign symmetry and stability of matrices...
• A matrix is a weakly sign symmetric P0-matrix (wss P0-matrix), if and only if every principal mino...
AbstractWeakly sign-symmetric matrices have non-negative principal minors and non-negative products ...
AbstractThe relation between positivity of principal minors, sign symmetry and stability of matrices...
In this paper it is shown that a partial sign symmetric P-matrix, whose digraph of specified entries...
AbstractLet A be a real n × n matrix. A is TP (totally positive) if all the minors of A are nonnegat...
AbstractResults on ω- and τ-matrices are surveyed. The question whether an ω-matrix with positive le...
AbstractWe show that if A is an M-matrix for which the length of the longest simple cycle in its ass...
AbstractThe author studies the construction of p.n.p. matrices, i.e., matrices with nonpositive prin...
AbstractA matrix A∈Mn(R) has a nest of positive principal minors if PAPT has positive leading princi...
AbstractThe localization of the eigenvalues of matrices with nonnegative sums of principal minors is...
AbstractA new necessary and sufficient condition is given for all principal minors of a square matri...
AbstractIn this paper we examine two well-known classes of matrices in linear complementarity theory...
AbstractWe show that if A is an M-matrix for which the length of the longest simple cycle in its ass...
AbstractWe show that a square matrix A with at least one positive entry and all principal minors neg...
AbstractThe relation between positivity of principal minors, sign symmetry and stability of matrices...
• A matrix is a weakly sign symmetric P0-matrix (wss P0-matrix), if and only if every principal mino...
AbstractWeakly sign-symmetric matrices have non-negative principal minors and non-negative products ...
AbstractThe relation between positivity of principal minors, sign symmetry and stability of matrices...
In this paper it is shown that a partial sign symmetric P-matrix, whose digraph of specified entries...
AbstractLet A be a real n × n matrix. A is TP (totally positive) if all the minors of A are nonnegat...
AbstractResults on ω- and τ-matrices are surveyed. The question whether an ω-matrix with positive le...
AbstractWe show that if A is an M-matrix for which the length of the longest simple cycle in its ass...
AbstractThe author studies the construction of p.n.p. matrices, i.e., matrices with nonpositive prin...
AbstractA matrix A∈Mn(R) has a nest of positive principal minors if PAPT has positive leading princi...
AbstractThe localization of the eigenvalues of matrices with nonnegative sums of principal minors is...
AbstractA new necessary and sufficient condition is given for all principal minors of a square matri...
AbstractIn this paper we examine two well-known classes of matrices in linear complementarity theory...
AbstractWe show that if A is an M-matrix for which the length of the longest simple cycle in its ass...
AbstractWe show that a square matrix A with at least one positive entry and all principal minors neg...
AbstractThe relation between positivity of principal minors, sign symmetry and stability of matrices...
• A matrix is a weakly sign symmetric P0-matrix (wss P0-matrix), if and only if every principal mino...
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