Path product and inverse M-matrices.
Patterns with several multiple eigenvalues
Identified are certain special periodic diagonal matrices that have a predictable number of paired eigenvalues. Since certain symmetric Toeplitz matrices are special cases, those that have several multiple 5 eigenvalues are also investigated further. This work generalizes earlier work on response matrices from circularly symmetric models.
Permanental associated matrices and Schneider's theorem.
Perturbation of purely imaginary eigenvalues of Hamiltonian matrices under structured perturbations.
Polynomial numerical hulls of order 3.
Positive definiteness of tridiagonal matrices via the numerical range.
Positive eigenvalues and two-letter generalized words.
Problème des moments matriciels sur la droite : construction d'une famille de solutions et questions d'unicité
Product of range symmetric block matrices in Minkowski space.
Pseudo-orthogonal polynomials.