Results 21 to 30 of about 2,532 (218)

Generalized Grand Lebesgue Spaces Associated to Banach Function spaces [PDF]

open access: yesSahand Communications in Mathematical Analysis
In this paper we introduce the class of grand Lebesgue spaces associated to a Banach function space $X$ by replacing the role of the $L^1$-norm by the norm $\|\cdot\|_X$ in the classical construction of the generalized grand Lebesgue spaces.
Alireza Bagheri Salec   +2 more
doaj   +1 more source

Variable Lebesgue norm estimates for BMO functions [PDF]

open access: yesCzechoslovak Mathematical Journal, 2012
Let \(f\in L^1_{\text{loc}}(\mathbb R^n)\), \(Q\) be a cube in \(\mathbb R^n\) and \(| Q| \) be the Lebesgue measure of \(Q\). Then \(f_Q=| Q| ^{-1}\int _Qf(t)\,dt\) and \(\| f\| _{\text{BMO}}=\sup \limits _Q| f-f_Q| _Q\). If \(\| f\| _{\text{BMO}}
Izuki, Mitsuo, Sawano, Yoshihiro
openaire   +2 more sources

Boundedness of Commutators of Marcinkiewicz Integrals on Nonhomogeneous Metric Measure Spaces

open access: yesJournal of Function Spaces, 2015
Let (X,d,μ) be a metric measure space satisfying the upper doubling condition and geometrically doubling condition in the sense of Hytönen. The aim of this paper is to establish the boundedness of commutator Mb generated by the Marcinkiewicz integral M ...
Guanghui Lu, Shuangping Tao
doaj   +1 more source

Lebesgue Measurable Function In Fractional Differential Equations

open access: yesJournal of Kufa for Mathematics and Computer, 2011
Bassam, M.A. [1], proved some existence and uniqueness theorems for the following fractional linear differential equation.
Sabah Mahmood Shaker
doaj   +1 more source

The Second Generalization of the Hausdorff Dimension Theorem for Random Fractals

open access: yesMathematics, 2022
In this paper, we present a second partial solution for the problem of cardinality calculation of the set of fractals for its subcategory of the random virtual ones.
Mohsen Soltanifar
doaj   +1 more source

Complex convexity in Lebesgue-Bochner Function Spaces [PDF]

open access: yesTransactions of the American Mathematical Society, 1996
Complex geometric properties of continuously quasi-normed spaces are introduced and their relationship to their analogues in real Banach spaces is discussed. It is shown that these properties lift from a continuously quasi-normed space X X to L p ( μ , X ...
Dowling, Patrick N.   +2 more
openaire   +1 more source

APPROXIMATION OF DIFFERENTIATION OPERATORS BY BOUNDED LINEAR OPERATORS IN LEBESGUE SPACES ON THE AXIS AND RELATED PROBLEMS IN THE SPACES OF \((p,q)\)-MULTIPLIERS AND THEIR PREDUAL SPACES

open access: yesUral Mathematical Journal, 2023
We consider a variant \(E_{n,k}(N;r,r;p,p)\) of the four-parameter Stechkin  problem \(E_{n,k}(N;r,s;p,q)\) on the best approximation of differentiation operators of order \(k\) on the class of \(n\) times differentiable functions ...
Vitalii V. Arestov
doaj   +1 more source

Generalization of one theorem of F. Riesz to some other spaces

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2020
It is known from the analysis course that in order a function to serve as an undefined integral of a summable function, it is necessary and sufficient that it be absolutely continuous. Therefore, it is natural to raise the question of the characteristic
S. Bitimkhan, D.T. D.T.
doaj  

A goodness‐of‐fit test for regression models with discrete outcomes

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract Regression models are often used to analyze discrete outcomes, but classical goodness‐of‐fit tests such as those based on the deviance or Pearson's statistic can be misleading or have little power in this context. To address this issue, we propose a new test, inspired by the work of Czado et al.
Lu Yang   +2 more
wiley   +1 more source

The External Estimate of the Compact Set by Lebesgue Set of the Convex Function [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика, 2020
The finite-dimensional problem of embedding a given compact D ⊂ R p into the lower Lebesgue set G(α) = {y ∈ R p : f(y) 6 α} of the convex function f(·) with the smallest value of α due to the offset of D is considered.
Abramova, Veronika V.   +2 more
doaj   +1 more source

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