Quasireducible operators.
Quasireversibility for inhomogeneous ill-posed problems in Hilbert spaces.
Quasi-similarity of contractions having a 2×1 characteristic function.
Quasispectra of solvable Lie algebra homomorphisms into Banach algebras
We propose a noncommutative holomorphic functional calculus on absolutely convex domains for a Banach algebra homomorphism π of a finite-dimensional solvable Lie algebra 𝔤 in terms of quasispectra σ(π). In particular, we prove that the joint spectral radius of a compact subset in a solvable operator Lie subalgebra coincides with the geometric spectral radius with respect to a quasispectrum.
Quelques propriétés des opérateurs uniformément convexifiants
Quelques remarques sur les opérateurs et les q-algèbres de Banach.
Quelques résultats dans la théorie algébrique de la diffusion
Quelques résultats récents en scattering
Quotient spaces defined by linear relations
Quotients of L1 by reflexive subspaces.
Here we present and example and some results suggesting that there is no infinite-dimensional reflexive subspace Z of L1 ≡ L1[0,1] such that the quotient L1/Z is isomorphic to a subspace of L1.