Results 1 to 10 of about 2,835 (222)

On an inequality of Kolmogorov and Stein [PDF]

open access: yesBulletin of the Australian Mathematical Society, 2000
A.N. Kolmogorov showed that, if f, f′, …, f (n) are bounded continuous functions on ℝ, then when 0 < k < n. This result was extended by E.M. Stein to Lebesgue Lp-spaces and by H.H. Bang to Orlicz spaces. In this paper, the inequality is extended to more general function spaces.
Bang, Ha Huy, Le, Hoang Mai
openaire   +2 more sources

Kolmogorov inequalities for norms of Marchaud-type fractional derivatives of multivariate functions

open access: yesResearches in Mathematics, 2020
We obtain new sharp Kolmogorov type inequalities, estimating the norm of mixed Marchaud type derivative of multivariate function through the C-norm of function itself and its norms in Hölder spaces.
N.V. Parfinovych, V.V. Pylypenko
doaj   +1 more source

On the Kolmogorov–Stein Inequality

open access: yesJournal of Inequalities and Applications, 1999
Let \(\Phi: [0,\infty)\to [0,\infty]\) be a non-vanishing, non-decreasing and concave function such that \(\Phi(0)= 0\), and let \(N_\phi\) be the space of measurable functions \(f\) on \(\mathbb{R}\) such that \(\|f\|_{N_\phi}= \int^\infty_0 \Phi(\lambda_f(y)) dy y\}\), \(y\geq 0\). It is proved that if \(f\) and its generalized \(n\)th derivative \(f^
Ha Huy Bang, Hoang Mai Le
openaire   +2 more sources

Interpolation inequalities in generalized Orlicz-Sobolev spaces and applications

open access: yesOpen Mathematics, 2023
Let m∈Nm\in {\mathbb{N}} and be a generalized Orlicz function. We obtained some interpolation inequalities for derivatives in generalized Orlicz-Sobolev spaces Wm,φ(Rn){W}^{m,\varphi }\left({{\mathbb{R}}}^{n}).
Wu Ruimin, Wang Songbai
doaj   +1 more source

Bell’s inequalities and kolmogorov’s axioms [PDF]

open access: yesPramana, 2001
After recalling proofs of the Bell inequality based on the assumptions of separability and of noncontextuality, the most general noncontextual contrapositive conditional probabilities consistent with the Aspect experiment are constructed. In general these probabilities are not all positive.
openaire   +2 more sources

Infinite Dimensional Widths and Optimal Recovery of a Function Class in Orlicz Spaces in L(R) Metric

open access: yesJournal of Mathematics, 2023
In this paper, we study the infinite dimensional widths and optimal recovery of Wiener–Sobolev smooth function classes WM,1(Pr(D)) determined by the r-th differential operator Pr(D) in Orlicz spaces with L(R) metric.
Xinxin Li, Garidi Wu
doaj   +1 more source

Inequality of weight status in urban Cuba: 2001–2010

open access: yesPopulation Health Metrics, 2021
Background Although understanding changes in the body weight distribution and trends in obesity inequality plays a key role in assessing the causes and persistence of obesity, limited research on this topic is available for Cuba. This study thus analyzed
Peng Nie   +7 more
doaj   +1 more source

Investigating the Income Status of Isfahan Province Using a Parametric Approach: 2011-2021 [PDF]

open access: yesپژوهش‌های برنامه و توسعه, 2023
The purpose of this article is to investigate the distribution of household income in Isfahan province by using the data of the household income and expenditure plan, for the period of 2011-2021 using parametric methods.
Hamed Lorvand, MohammadReza Lali
doaj   +1 more source

Strong laws of large numbers for general random variables in sublinear expectation spaces

open access: yesJournal of Inequalities and Applications, 2019
In this paper, we obtain the equivalent relations between Kolmogorov maximal inequality and Hájek–Rényi maximal inequality both in moment and capacity types in sublinear expectation spaces.
Weihuan Huang, Panyu Wu
doaj   +1 more source

ON THE BEST APPROXIMATION OF THE DIFFERENTIATION OPERATOR

open access: yesUral Mathematical Journal, 2015
In this paper we give a solution of the problem of the best approximation in the uniform norm of the differentiation operator of order k by bounded linear operators in the class of functions with the property that the Fourier transforms of their ...
Vitalii V. Arestov
doaj   +1 more source

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