Results 21 to 30 of about 962 (185)

Leray-Schauder results for multivalued nonlinear contractions defined on closed subsets of a Fréchet space

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
New Leray-Schauder results are presented for multivalued contractions defined on subsets of a Fréchet space E. The proof relies on fixed point results in Banach spaces and on viewing E as the projective limit of a sequence of Banach spaces.
Ravi P. Agarwal, Donal O'Regan
doaj   +1 more source

A MEASURE OF NONCOMPACTNESS IN SEQUENCE BANACH SPACES

open access: yesDemonstratio Mathematica, 1995
A measure of noncompactness is introduced and shown to be equivalent to the Hausdorff measure of noncompactness.
Martinón, Antonio, Sadarangani, Kishin
openaire   +2 more sources

M-constants in Orlicz Spaces Equipped with the Luxemburg Norm

open access: yesJournal of Harbin University of Science and Technology, 2022
Riesz angle μ2(x)is an important geometric constant in Banach lattice spaces, which is closely related to the fixed point properties of spaces. In this paper, the M-constants of Orlicz function spaces and Orlicz sequence spaces equipped with Luxemburg ...
WANG Zi-xuan, CUI Yun-an, WANG Jing
doaj   +1 more source

Spaceability in Banach and quasi-Banach sequence spaces

open access: yesLinear Algebra and its Applications, 2011
9 ...
Botelho, G.   +3 more
openaire   +3 more sources

On Some Properties of Banach Space-Valued Fibonacci Sequence Spaces

open access: yesCommunications in Advanced Mathematical Sciences
In this work, we give some results about the basic properties of the vector-valued Fibonacci sequence spaces. In general, sequence spaces with Banach space-valued cannot have a Schauder Basis unless the terms of the sequences are complex or real terms ...
Seçkin Yalçın, Yılmaz Yılmaz
doaj   +1 more source

Kaleva-Seikkala’s Type Fuzzy b-Metric Spaces and Several Contraction Mappings

open access: yesJournal of Function Spaces, 2022
In this paper, we introduce the concept of Kaleva-Seikkala’s type fuzzy b-metric spaces as a generalization of the notion of b-metric spaces and fuzzy metric spaces.
Shu-Fang Li, Fei He, Shu-Min Lu
doaj   +1 more source

Entire Analytic Functions of Unbounded Type on Banach Spaces and Their Lineability

open access: yesAxioms, 2021
In the paper we establish some conditions under which a given sequence of polynomials on a Banach space X supports entire functions of unbounded type, and construct some counter examples.
Andriy Zagorodnyuk, Anna Hihliuk
doaj   +1 more source

Statistical approximation with a sequence of 2-Banach spaces

open access: yesMathematical and Computer Modelling, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mehmet Gürdal, Ahmet Sahiner
openaire   +5 more sources

A double projection algorithm for quasimonotone variational inequalities in Banach spaces

open access: yesJournal of Inequalities and Applications, 2018
We propose a double projection algorithm for solving variational inequality problems in Banach spaces. We establish the strong convergence of the whole sequence generated by the proposed method under the quasimonotone and uniform continuity on bounded ...
Lian Zheng
doaj   +1 more source

Banach spaces for which the space of operators has 2𝔠 closed ideals

open access: yesForum of Mathematics, Sigma, 2021
We formulate general conditions which imply that ${\mathcal L}(X,Y)$, the space of operators from a Banach space X to a Banach space Y, has $2^{{\mathfrak {c}}}$ closed ideals, where ${\mathfrak {c}}$ is the cardinality of the continuum.
Daniel Freeman   +2 more
doaj   +1 more source

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