Results 21 to 30 of about 1,127,143 (202)

An ordering for the Banach spaces [PDF]

open access: yesPacific Journal of Mathematics, 1983
An ''ordering'' on the class of all Banach spaces is defined as follows: If X and Y are Banach spaces, then we say \(X\prec Y\) if \(X=\cap T^{**- 1}[Y],\) where the intersection is over all bounded linear operators T:\(X\to Y\). This holds if there is a Tauberian operator from X to Y, but also in other cases. Certain special cases are characterized: \(
openaire   +2 more sources

Ornstein-Uhlenbeck processes in Banach spaces and their spectral representations. [PDF]

open access: yes, 2002
For Q the variance of some centred Gaussian random vector in a separable Banach space it is shown that, necessarily, Q factors through $\ell^2$ as a product of 2-summing operators.
Groves, James S.
core   +5 more sources

Some remarks on James-Schreier spaces. [PDF]

open access: yes, 2010
The James-Schreier spaces V_p, where p is a real number greater than or equal to 1, were recently introduced by Bird and Laustsen as an amalgamation of James' quasi-reflexive Banach space on the one hand and Schreier's Banach space giving a ...
Laustsen, Niels Jakob   +2 more
core   +5 more sources

Skewness in Banach spaces [PDF]

open access: yesTransactions of the American Mathematical Society, 1983
Let E E be a Banach space. One often wants to measure how far
Fitzpatrick, Simon, Reznick, Bruce
openaire   +2 more sources

Moreau’s decomposition in Banach spaces [PDF]

open access: yesMathematical Programming, 2013
Moreau's decomposition is a powerful nonlinear hilbertian analysis tool that has been used in various areas of optimization and applied mathematics. In this paper, it is extended to reflexive Banach spaces and in the context of generalized proximity measures. This extension unifies and significantly improves upon existing results.
Patrick L. Combettes, Noli N. Reyes
openaire   +5 more sources

Convex Optimization on Banach Spaces [PDF]

open access: yesFoundations of Computational Mathematics, 2015
Greedy algorithms which use only function evaluations are applied to convex optimization in a general Banach space $X$. Along with algorithms that use exact evaluations, algorithms with approximate evaluations are treated. A priori upper bounds for the convergence rate of the proposed algorithms are given.
Ronald A. DeVore, Vladimir N. Temlyakov
openaire   +3 more sources

Ergodic Banach spaces

open access: yesAdvances in Mathematics, 2005
We show that any Banach space contains a continuum of non isomorphic subspaces or a minimal subspace. We define an ergodic Banach space $X$ as a space such that $E_0$ Borel reduces to isomorphism on the set of subspaces of $X$, and show that every Banach space is either ergodic or contains a subspace with an unconditional basis $ which is ...
Ferenczi, Valentin, Rosendal, Christian
openaire   +2 more sources

Projection Methods for a System of Nonlinear Mixed Variational Inequalities in Banach Spaces

open access: yesJournal of Function Spaces, 2014
The existence and uniqueness of solution for a system of nonlinear mixed variational inequality in Banach spaces is given firstly. A Mann iterative sequences with errors for this system of nonlinear mixed variational inequalities in Banach spaces is ...
Zhong-Bao Wang   +2 more
doaj   +1 more source

Composition Operators on Some Banach Spaces of Harmonic Mappings

open access: yesJournal of Function Spaces, 2020
We study the composition operators on Banach spaces of harmonic mappings that extend several well-known Banach spaces of analytic functions on the open unit disk in the complex plane, including the α-Bloch spaces, the growth spaces, the Zygmund space ...
Munirah Aljuaid, Flavia Colonna
doaj   +1 more source

Application of a New Class of Characteristic Function

open access: yesJournal of Harbin University of Science and Technology, 2021
In Banach space,considering introducing a new class of real characteristic functions fx + ty ( y) and fx + ty ( y) ,the independent variable is t,and the domain is [0,+ ∞ ) ,and the corresponding properties of those new characteristic functions are used ...
ZHAO Liang, HAN Zhao-yang
doaj   +1 more source

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