Pseudo-similarity and partial unit regularity
Pseudospectra and matrix behaviour
We study the extent to which the pseudospectra of a matrix determine other aspects of its behaviour, such as the growth of its powers and its unitary equivalence class.
QR Factorization of Toeplitz Matrices.
Quadratic form schemes with non-trivial radical
Quadratic forms and Azumaya algebras.
Quadratic forms and sesquilinear forms in infinite dimensional spaces. Witt type theorems in spaces of denumerably infinite dimension
Quadratic Forms and the ?-Invariant. II.
Quadratic forms over rings of dimension 1.
Quadratic Integrals of Linear Hamiltonian Systems.
Quadratic Spaces with Few Isometries (Quadratic Forms and Linear Topologies VI)
Quadratische Formen in additiven Kategorien
Quadratische Formen und die Artin-Schreiersche Theorie der formal reellen Körper
Quadratische Identitäten bei Polygonen.
Quadratische Räume mit zwei Unterräumen.
Quadratische Räume unendlicher Dimension und partielle Isomorphismen.
Quadratische Semi-Ordnungen und Quadratische Formen.
Quantum permutations, Hadamard matrices, and the search for matrix models
This is a presentation of recent work on quantum permutation groups, complex Hadamard matrices, and the connections between them. A long list of problems is included. We include as well some conjectural statements about matrix models.
Quasianalytic perturbation of multi-parameter hyperbolic polynomials and symmetric matrices
This paper investigates hyperbolic polynomials with quasianalytic coefficients. Our main purpose is to prove factorization theorems for such polynomials, and next to generalize the results of K. Kurdyka and L. Paunescu about perturbation of analytic families of symmetric matrices to the quasianalytic setting.
Quelques généralisations du 17e problème de Hilbert.
Quelques remarques sur les résultats de Tutte concernant le problème de Ulam