Results 21 to 30 of about 262 (32)

On Motzkin sequence spaces via q-analog and compact operators

open access: yesDemonstratio Mathematica
We aim to develop a qq-analog of recently introduced Motzkin sequence spaces by Erdem et al. [Motzkin sequence spaces and Motzkin core, Numer. Funct. Anal. Optim. 45 (2024), no.
Yaying Taja, Mursaleen Mohammad
doaj   +1 more source

Asymptotically Hilbertian Modular Banach Spaces: Examples of Uncountable Categoricity

open access: yes, 2016
We give a criterion ensuring that the elementary class of a modular Banach space E (that is, the class of Banach spaces, some ultrapower of which is linearly isometric to an ultrapower of E) consists of all direct sums E\oplus_m H, where H is an ...
Henson, C. Ward, Raynaud, Yves
core   +1 more source

The essential norm of bounded diagonal infinite matrices acting on Banach sequence spaces

open access: yesDemonstratio Mathematica
We calculate the essential norm of bounded diagonal infinite matrices acting on Köthe sequence spaces. As a consequence of our result, we obtain a recent criteria for the compactness of multiplication operator acting on Köthe sequence spaces.
Fernández Julio C. Ramos   +2 more
doaj   +1 more source

q-Stirling sequence spaces associated with q-Bell numbers

open access: yesOpen Mathematics
In this study, we build qq-analog of the qq-Stirling matrix involved qq-Bell numbers Sq=(Snk(q)){{\mathbb{S}}}_{q}=({S}_{nk}\left(q)) defined by Sq=(Snk(q))=Sq(n,k)Bq(n),0≤k≤n,0,otherwise.\begin{array}{r}{{\mathbb{S}}}_{q}=({S}_{nk}\left(q))=\left ...
Atabey Koray Ibrahim   +3 more
doaj   +1 more source

Multipliers between ℓp spaces

open access: yesConcrete Operators
For ...
Cheng Raymond
doaj   +1 more source

The sequence space bv and some applications

open access: yes, 2014
In this work, we give well-known results related to some properties, dual spaces and matrix transformations of the sequence space bv and introduce the matrix domain of space bv with arbitrary triangle matrix A.
Kirişci, Murat
core  

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