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相关论文: Estimates for tail functions under Riesz transform…

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We derive the tail inequalities between two random variables starting from inequalities between its moment, or more generally between its Lebesgue-Riesz norms, which holds true on certain sets of parameters. We consider some applications…

概率论 · 数学 2022-06-06 M. R. Formica , E. Ostrovsky , L. Sirota

We study moment rearrangement invariant spaces, which contain as particular cases the generalized Grand Lebesgue Spaces, and provide norm estimates for some operators, not necessarily linear, acting between some measurable rearrangement…

泛函分析 · 数学 2022-12-26 M. R. Formica , E. Ostrovsky , L. Sirota

We obtain the quite exact exponential bounds for tails of distributions of sums of Banach space valued random variables uniformly over the number of summands under natural for the Law of Iterated Logarithm (LIL) norming. We study especially…

概率论 · 数学 2014-04-01 E. Ostrovsky , L. Sirota

We study the problem estimation of classical Lebesgue-Riesz and Grand Lebesgue Norm for the fractional integrals and derivatives for the functions from the classical Lebesgue-Riesz spaces as well as from the modified Besov's spaces.

泛函分析 · 数学 2015-04-17 E. Ostrovsky , L. Sirota

In this paper we obtain the non - asymptotic estimations for Riesz's and Bessel's potential integral operators in the so - called Bilateral Grand Lebesgue Spaces. We also give examples to show the sharpness of these inequalities.

泛函分析 · 数学 2009-07-21 E. Ostrovsky , E. Rogover , L. Sirota

We give sufficient conditions on the exponent $p: \mathbb R^d\rightarrow [1,\infty)$ for the boundedness of the non-centered Gaussian maximal function on variable Lebesgue spaces $L^{p(\cdot)}(\mathbb R^d, \gamma_d)$, as well as of the new…

偏微分方程分析 · 数学 2024-12-12 Estefanía Dalmasso , Roberto Scotto

We employ the Riesz transform as a means for describing geometric properties of sets in ${\mathbb{R}}^n$, and study the extent to which they can be used to characterize function spaces defined on said sets. In particular, characterizations…

偏微分方程分析 · 数学 2025-03-25 Dorina Mitrea , Irina Mitrea , Marius Mitrea

For regularized estimation, the upper tail behavior of the random Lipschitz coefficient associated with empirical loss functions is known to play an important role in the error bound of Lasso for high dimensional generalized linear models.…

统计理论 · 数学 2010-09-07 Zhiyi Chi

We bring in this short report (counter -) examples on order to show a difference between tails behavior and Grand Lebesgue Spaces norms for some classes of random variables.

概率论 · 数学 2017-11-15 E. Ostrovsky , L. Sirota

We study $L^p$ bounds for two kinds of Riesz transforms on $\mathbb{R}^d$ related to the harmonic oscillator. We pursue an explicit estimate of their $L^p$ norms that is independent of the dimension $d$ and linear in $\max(p, p/(p-1))$.

泛函分析 · 数学 2021-05-24 Maciej Kucharski

We derive a dyadic model operator for the Riesz vector. We show linear upper $L^p$ bounds for $1 < p < \infty$ between this model operator and the Riesz vector, when applied to functions with values in Banach spaces. By an upper bound we…

泛函分析 · 数学 2023-09-07 Komla Domelevo , Stefanie Petermichl

We generalize a famous tail Doob's inequality, relative two non-negative random variables, arising in the martingale theory, in two directions: on the more general source data and on the random variables belonging to the so-called Grand…

概率论 · 数学 2022-06-03 M. R. Formica , E. Ostrovsky , L. Sirota

We prove two-sided inequalities between the integral moduli of smoothness of a function on $\mathbb{R}^d/\mathbb{T}^d$ and the weighted tail-type integrals of its Fourier transform/series. Sharpness of obtained results in particular is…

经典分析与常微分方程 · 数学 2012-04-23 D. Gorbachev , S. Tikhonov

We verify the continuity of the Riesz transform from the operator related Hardy space to $L^1$ - Lebesgue space of integrable functions. For the standard Euclidean Laplace operator, this is a classical result that plays a significant role…

泛函分析 · 数学 2024-09-24 Michał Dymowski , Marcin Preisner , Adam Sikora

On a compact connected group $G$, consider the infinitesimal generator $-L$ of a central symmetric Gaussian convolution semigroup $(\mu_t)_{t>0}$. We establish several regularity results of the solution to the Poisson equation $LU=F$, both…

偏微分方程分析 · 数学 2025-04-23 Alexander Bendikov , Li Chen , Laurent Saloff-Coste

We find the exact values for constants in bilateral Calderon-Stein-Weiss inequalities between tail (Marcinkiewicz) norm and weak Lebesgue (Lorentz) norm. Possible applications: Functional Analysis (for instance, interpolation of operators),…

泛函分析 · 数学 2012-10-18 E. Ostrovsky , L. Sirota

This preprint concerns Banach spaces of functions converging at infinity. In particular, spaces of continuous functions, Lebesgue spaces and sequence spaces. In each framework we show versions of Riesz's representation theorem.

泛函分析 · 数学 2020-09-01 Nico Tauchnitz

We establish square function estimates for integral operators on uniformly rectifiable sets by proving a local $T(b)$ theorem and applying it to show that such estimates are stable under the so-called big pieces functor. More generally, we…

偏微分方程分析 · 数学 2013-01-22 Steve Hofmann , Dorina Mitrea , Marius Mitrea , Andrew J. Morris

We derive sharp non - asymptotical Lebesgue - Riesz as well as Grand Lebesgue Space norm estimations for different norms of matrix martingales through these norms for the correspondent martingale differences and through the entropic…

概率论 · 数学 2024-01-25 Maria Rosaria Formica , Eugeny Ostrovsky , Leonid Sirota

\begin{abstract} Let $P\pm$ be the Riesz's projection operator and let $P_-= I - P_+$. We consider estimates of the expression $\|( |P_ + f | ^s + |P_- f |^s) ^{\frac{1}{s}}\|_{L^p (\mathbf{T})}$ in terms of Lebesgue $p$-norm of the…

泛函分析 · 数学 2023-05-24 Marijan Marković , Petar Melentijević