Liénard type -Laplacian neutral Rayleigh equation with a deviating argument.
Lifting properties, Nehari theorem and Paley lacunary inequality.
A general notion of lifting properties for families of sesquilinear forms is formulated. These lifting properties, which appear as particular cases in many classical interpolation problems, are studied for the Toeplitz kernels in Z, and applied for refining and extending the Nehari theorem and the Paley lacunary inequality.
Lifting uniformly continuous maps with values in nuclear Fréchet spaces
Lifting-Probleme für Vektorfunktionen und ...-Sequenzen.
Limacons, normal operators and polar factorizations.
L'image de la limite supérieure d'une famille d'ensembles est-elle égale à la limite supérieure de la famille des images ?
liminf and limsup contractions.
Limit behaviour of trajectories involving subgradients of convex functions
Limit points of arithmetic means of sequences in Banach spaces
We shall prove the following statements: Given a sequence in a Banach space enjoying the weak Banach-Saks property, there is a subsequence (or a permutation) of the sequence such that whenever belongs to the closed convex hull of the set of weak limit points of . In case has the Banach-Saks property and is bounded the converse assertion holds too. A characterization of reflexive spaces in terms of limit points and cores of bounded sequences is also given. The motivation for the...
Limit points of eigenvalues of truncated unbounded tridiagonal operators
Let T be a self-adjoint tridiagonal operator in a Hilbert space H with the orthonormal basis {e n}n=1∞, σ(T) be the spectrum of T and Λ(T) be the set of all the limit points of eigenvalues of the truncated operator T N. We give sufficient conditions such that the spectrum of T is discrete and σ(T) = Λ(T) and we connect this problem with an old problem in analysis.
Limit semigroups of Bernstein-Schnabl operators associated with positive projections
Limit semigroups of Stancu-Mühlbach operators associated with positive projections
Limit sets in product of semi-dynamical systems.
Limited -converging operators and relation with some geometric properties of Banach spaces
By using the concepts of limited -converging operators between two Banach spaces and , -sets and -limited sets in Banach spaces, we obtain some characterizations of these concepts relative to some well-known geometric properties of Banach spaces, such as -Dunford–Pettis property of order and Pelczyński’s property of order , .
Limits of Certain Iterates of Post-Widder Operators.
Limits of inner superposition operators and Young measures.
Limits of Sequences of Operators on Spaces of Vector Valued Functions.
Lineability of functionals and operators
This article is divided into two parts. The first one is on the linear structure of the set of norm-attaining functionals on a Banach space. We prove that every Banach space that admits an infinite-dimensional separable quotient can be equivalently renormed so that the set of norm-attaining functionals contains an infinite-dimensional vector subspace. This partially solves a question proposed by Aron and Gurariy. The second part is on the linear structure of dominated operators. We show that the...
Linear abstract integro-differential equations of hyperbolic type in Hilbert spaces
Linear and nonlinear abstract differential equations of high order
The nonlocal boundary value problems for linear and nonlinear degenerate abstract differential equations of arbitrary order are studied. The equations have the variable coefficients and small parameters in principal part. The separability properties for linear problem, sharp coercive estimates for resolvent, discreetness of spectrum and completeness of root elements of the corresponding differential operator are obtained. Moreover, optimal regularity properties for nonlinear problem is established....