Results 71 to 80 of about 11,294 (215)

ℓp$\ell ^p$ metrics on cell complexes

open access: yesJournal of the London Mathematical Society, Volume 111, Issue 1, January 2025.
Abstract Motivated by the observation that groups can be effectively studied using metric spaces modelled on ℓ1$\ell ^1$, ℓ2$\ell ^2$ and ℓ∞$\ell ^\infty$ geometry, we consider cell complexes equipped with an ℓp$\ell ^p$ metric for arbitrary p$p$. Under weak conditions that can be checked locally, we establish non‐positive curvature properties of these
Thomas Haettel, Nima Hoda, Harry Petyt
wiley   +1 more source

Injective Banach lattices

open access: yesMathematische Zeitschrift, 1977
A Banach lattice E (over the field of reals) is said to be injective if, for every Banach lattice G, every closed linear sublattice F of G and every positive linear operator u: F--*E, there is a positive linear extension v: G . E with IIv[I = Ilull.
openaire   +1 more source

Common Fixed Point Theorems for Order Contractive Mappings on a σ‐Complete Vector Lattice

open access: yesJournal of Mathematics, Volume 2025, Issue 1, 2025.
In this paper, we prove some common fixed point theorems for order contractive mappings on a σ‐complete vector lattice. We apply new results to study the well‐posedness of a common fixed point problem for two contractive mappings. Our proofs are simple and purely order‐theoretic in nature.
Min Wang   +4 more
wiley   +1 more source

Free Banach lattices under convexity conditions. [PDF]

open access: yesRev R Acad Cienc Exactas Fis Nat A Mat, 2022
Jardón-Sánchez H   +4 more
europepmc   +1 more source

Differential inclusions of arbitrary fractional order with anti-periodic conditions in Banach spaces

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
In this paper, we establish various existence results of solutions for fractional differential equations and inclusions of arbitrary order $q\in (m-1,m)$, where $m$ is an arbitrary natural number greater than or equal to two, in infinite dimensional ...
JinRong Wang   +2 more
doaj   +1 more source

Banach Lattices

open access: yes, 2023
The main goal of this thesis is to find conditions, under which, Banach Lattices are isomorphic either to C(K), where K is compact, or to L1(μ), with respect to the measure μ. In Chapter 1, we give some basic notations and definitions for vector lattices.
openaire   +1 more source

Characterization of Banach Lattices in Terms of Quasi-Interior Points

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2013
In terms of quasi-interior points, criteria that a Banach lattice has order continuous norm or is an -space with a unit are given. For example, if is Dedekind complete and has a weak order unit, then has order continuous norm if and only if the set of
Egor A. Alekhno
doaj   +1 more source

Statistical Order Convergence and Statistically Relatively Uniform Convergence in Riesz Spaces

open access: yesJournal of Function Spaces, 2018
A new concept of statistically e-uniform Cauchy sequences is introduced to study statistical order convergence, statistically relatively uniform convergence, and norm statistical convergence in Riesz spaces.
Xuemei Xue, Jian Tao
doaj   +1 more source

Some properties of b-weakly compact operators on Banach lattices

open access: yesپژوهش‌های ریاضی, 2021
In this paper we give some necessary and sufficient conditions for which each Banach lattice  is    space and we study some properties of b-weakly compact operators from a Banach lattice  into a Banach space .
Kazem Haghnejad azar, Akbar Bahramnezhad
doaj  

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