EuDML | Browse

The search session has expired. Please query the service again.

Items

All a b c d e f g h i j k l m n o p q r s t u v w x y z Other

Displaying 601 – 620 of 1952

On Lindenstrauss-Pełczyński spaces

Jesús M. F. Castillo, Yolanda Moreno, Jesús Suárez (2006)

Studia Mathematica

We consider some stability aspects of the classical problem of extension of C(K)-valued operators. We introduce the class ℒ of Banach spaces of Lindenstrauss-Pełczyński type as those such that every operator from a subspace of c₀ into them can be extended to c₀. We show that all ℒ-spaces are of type $ℒ_{\infty}$ but not conversely. Moreover, $ℒ_{\infty}$ -spaces will be characterized as those spaces E such that E-valued operators from w*(l₁,c₀)-closed subspaces of l₁ extend to l₁. Regarding examples we will show that...

On linear extension for interpolating sequences

Eric Amar (2008)

Studia Mathematica

Let A be a uniform algebra on X and σ a probability measure on X. We define the Hardy spaces $H^{p} (σ)$ and the $H^{p} (σ)$ interpolating sequences S in the p-spectrum $ℳ_{p}$ of σ. We prove, under some structural hypotheses on A and σ, that if S is a “dual bounded” Carleson sequence, then S is $H^{s} (σ)$ -interpolating with a linear extension operator for s < p, provided that either p = ∞ or p ≤ 2. In the case of the unit ball of ℂⁿ we find, for instance, that if S is dual bounded in $H^{\infty} ()$ then S is $H^{p} ()$ -interpolating with a linear...

On linear functionals in Hardy-Orlicz spaces, I

R. Leśniewicz (1973)

Studia Mathematica

On linear functionals in Hardy-Orlicz spaces, II

R. Leśniewicz (1973)

Studia Mathematica

On linear functionals in Hardy-Orlicz spaces. III

R. Leśniewicz (1973)

Studia Mathematica

On linear properties of separable conjugate spaces of C*-algebras

P. Wojtaszczyk (1974)

Studia Mathematica

On linear topological Riesz spaces without convexity conditions.

Radenović, Stojan (1989)

Publications de l'Institut Mathématique. Nouvelle Série

On linearly topologized spaces and real-compact spaces

Sánchez Ruiz, L.M., López Pellicer, M. (1991)

Portugaliae mathematica

On linearly topologized spaces and real-compact spaces - II

Sánchez Ruiz, L.M., López Pellicer, M. (1991)

Portugaliae mathematica

On linearly topologized spaces and $μ$ -spaces

Sánchez Ruiz, L.M., López Pellicer, M. (1991)

Portugaliae mathematica

On Liouville F-Algebras

John Daly (1971)

Studia Mathematica

On Liouville theorems, continuity and Hölder continuity of weak solutions to some quasilinear elliptic systems

Bernhard Kawohl (1980)

Commentationes Mathematicae Universitatis Carolinae

On Lipschitz and d.c. surfaces of finite codimension in a Banach space

Luděk Zajíček (2008)

Czechoslovak Mathematical Journal

Properties of Lipschitz and d.c. surfaces of finite codimension in a Banach space and properties of generated $σ$ -ideals are studied. These $σ$ -ideals naturally appear in the differentiation theory and in the abstract approximation theory. Using these properties, we improve an unpublished result of M. Heisler which gives an alternative proof of a result of D. Preiss on singular points of convex functions.

On Lipschitz ball noncollapsing functions and uniform co-Lipschitz mappings of the plane.

Maleva, Olga (2005)

Abstract and Applied Analysis

On Lipschitz conditions for ordinary differential equations in Fréchet spaces

Gerd Herzog (1998)

Czechoslovak Mathematical Journal

We will give an existence and uniqueness theorem for ordinary differential equations in Fréchet spaces using Lipschitz conditions formulated with a generalized distance and row-finite matrices.

On Lipschitz mappings between Fréchet spaces

P. Mankiewicz (1972)

Studia Mathematica

On local and global injectivity of noncompact vector fields in non necessarily locally convex vector spaces

Holger Alex (1994)

Commentationes Mathematicae Universitatis Carolinae

We give in this paper conditions for a mapping to be globally injective in a topological vector space.

On local and global moduli of convexity

Josef Daneš (1976)

Commentationes Mathematicae Universitatis Carolinae

On local automorphisms and mappings that preserve idempotents

Matej Brešar, Peter Šemrl (1995)

Studia Mathematica

Let B(H) be the algebra of all bounded linear operators on a Hilbert space H. Automorphisms and antiautomorphisms are the only bijective linear mappings θ of B(H) with the property that θ(P) is an idempotent whenever P ∈ B(H) is. In case H is separable and infinite-dimensional, every local automorphism of B(H) is an automorphism.

On local convexity of nonlinear mappings between Banach spaces

Iryna Banakh, Taras Banakh, Anatolij Plichko, Anatoliy Prykarpatsky (2012)

Open Mathematics

We find conditions for a smooth nonlinear map f: U → V between open subsets of Hilbert or Banach spaces to be locally convex in the sense that for some c and each positive ɛ < c the image f(B ɛ(x)) of each ɛ-ball B ɛ(x) ⊂ U is convex. We give a lower bound on c via the second order Lipschitz constant Lip2(f), the Lipschitz-open constant Lipo(f) of f, and the 2-convexity number conv2(X) of the Banach space X.

Currently displaying 601 – 620 of 1952

Previous Page 31 Next