Results 31 to 40 of about 1,163,773 (213)

On the Nonnegative Rank of Positive Operators

open access: yesMathematische Nachrichten, EarlyView.
ABSTRACT In this paper, we introduce the concept of a nonnegative rank of a positive operator T:X→Y$T: X\rightarrow Y$ between ordered vector spaces. In the case of nonnegative matrices, our definition agrees with the standard definition of a nonnegative rank.
Roman Drnovšek, Marko Kandić
wiley   +1 more source

Extrapolation to Morrey Banach spaces on spaces of homogeneous type

open access: yesAnalysis and Geometry in Metric Spaces
This paper introduces the Morrey Banach spaces on spaces of homogeneous type. We establish the Rubio de Francia extrapolation theory for Morrey Banach spaces on spaces of homogeneous type.
Ho Kwok-Pun
doaj   +1 more source

Locally Nearly Uniformly Convex Points in Orlicz Spaces Equipped with the Luxemburg Norm

open access: yesAxioms
This research explores two novel geometric concepts—nearly convex points and locally nearly uniformly convex points within the frameworks of Banach spaces and Orlicz spaces equipped with the Luxemburg norm.
Yunan Cui, Xiaoxia Wang, Yaoming Niu
doaj   +1 more source

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

Wavelets in Banach Spaces

open access: yesActa Applicandae Mathematica, 1999
37 pages; LaTeX2e; no pictures; 27/07/99: many small ...
openaire   +3 more sources

Almost Periodicity on Isolated Time Scales and Applications

open access: yesMathematische Nachrichten, EarlyView.
ABSTRACT In this work, we formulate a generalized definition of almost periodicity for functions defined on isolated time scales. The introduced definition is consistent with the known formulations in the discrete and quantum calculus settings. We state two different definitions of almost periodicity and we show their relation.
Martin Bohner   +2 more
wiley   +1 more source

Nonconstant Positive Steady States for a Predator–Prey System With Signal‐Dependent Diffusion

open access: yesMathematische Nachrichten, EarlyView.
ABSTRACT This paper investigates a highly nonlinear predator–prey reaction–diffusion system featuring signal‐dependent prey diffusion, where the motility of the prey is modulated by a chemical signal released by predators. For unbounded functional responses, we establish the global‐in‐time existence and uniform‐in‐time boundedness of classical ...
Qigang Deng   +3 more
wiley   +1 more source

A Generalization of Uniformly Extremely Convex Banach Spaces

open access: yesJournal of Function Spaces, 2016
We discuss a new class of Banach spaces which are the generalization of uniformly extremely convex spaces introduced by Wulede and Ha. We prove that the new class of Banach spaces lies strictly between either the classes of k-uniformly rotund spaces and ...
Suyalatu Wulede   +2 more
doaj   +1 more source

The concept of cone b-Banach space and fixed point theorems

open access: yesOpen Mathematics, 2021
In this article, the concepts of cone b-norm and cone b-Banach space are given. Some new fixed point theorems in cone b-Banach spaces are established. The new results improve some fixed point theorems in cone Banach spaces.
Yang Chen, Zhu Xiaolin
doaj   +1 more source

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