Projections, skewness and related constants in real normed spaces.
Projectivity and lifting of Hilbert module maps
In a recent paper, Carlson, Foiaş, Williams and the author proved that isometric Hilbert modules are projective in the category of Hilbert modules similar to contractive ones. In this paper, a simple proof, based on a strengthened lifting theorem, is given. The proof also applies to an equivalent theorem of Foiaş and Williams on similarity to a contraction of a certain 2 × 2 operator matrix.
Projektoren und relative Inversion holomorpher Semi-Fredholmfunktionen.
Prolongement d’un opérateur d’un sous-espace de dans
Prolongement méromorphe de la matrice de scattering pour des problèmes à deux corps à longue portée
Prolongements maximaux positifs d'opérateurs positifs et problèmes de perturbations singulières
Propagation and local-decay properties for long-range scattering of quantum three-body systems
Proper contractions and invariant subspaces.
Proper subspaces and compatibility
Let 𝓔 be a Banach space contained in a Hilbert space 𝓛. Assume that the inclusion is continuous with dense range. Following the terminology of Gohberg and Zambickiĭ, we say that a bounded operator on 𝓔 is a proper operator if it admits an adjoint with respect to the inner product of 𝓛. A proper operator which is self-adjoint with respect to the inner product of 𝓛 is called symmetrizable. By a proper subspace 𝓢 we mean a closed subspace of 𝓔 which is the range of a proper projection. Furthermore,...
Properness and topological degree for general elliptic operators.
Properness and topological degree for nonlocal reaction-diffusion operators.
Properties and applications of Tauberian operators.
Tauberian operators, which appeared in response to a problem in summability [GaW, KW] have found application in several situations: factorization of operators [DFJP], preservation of isomorphic properties of Banach spaces [N, NR], equivalence between the Radon-Nikodym property and the Krein-Milman property [Sch], and generalized Fredholm operators [Ta, Y].This paper is a survey of the main properties and applications of Tauberian operators.
Properties and applications of the local functional calculus.
Properties of eigenfunctions of non-local operators
Properties of lush spaces and applications to Banach spaces with numerical index 1
The concept of lushness, introduced recently, is a Banach space property, which ensures that the space has numerical index 1. We prove that for Asplund spaces lushness is actually equivalent to having numerical index 1. We prove that every separable Banach space containing an isomorphic copy of c₀ can be renormed equivalently to be lush, and thus to have numerical index 1. The rest of the paper is devoted to the study of lushness just as a property of Banach spaces. We prove that lushness is separably...
Properties of Some Norm Related Functions of Unbounded Linear Operators.
Properties of the scattering amplitude for electron-atom collisions
Property (gz) for bounded linear operators
Proportional factorization of entropy ideals.
Proprietà spettrali di certi operatori lineari non compatti