Results 41 to 50 of about 126 (123)

A quantitative approach to weighted Carleson condition

open access: yesConcrete Operators, 2017
Quantitative versions of weighted estimates obtained by F. Ruiz and J.L. Torrea [30, 31] for the operator are obtained. As a consequence, some sufficient conditions for the boundedness of Min the two weight setting in the spirit of the results obtained ...
Rivera-Ríos Israel P.
doaj   +1 more source

A Weak Type Vector-Valued Inequality for the Modified Hardy–Littlewood Maximal Operator for General Radon Measure on ℝn

open access: yesAnalysis and Geometry in Metric Spaces, 2020
The aim of this paper is to prove the weak type vector-valued inequality for the modified Hardy– Littlewood maximal operator for general Radon measure on ℝn. Earlier, the strong type vector-valued inequality for the same operator and the weak type vector-
Sawano Yoshihiro
doaj   +1 more source

Boundedness of multilinear operators on Triebel‐Lizorkin spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2004, Issue 5, Page 259-271, 2004., 2004
The purpose of this paper is to study the boundedness in the context of Triebel‐Lizorkin spaces for some multilinear operators related to certain convolution operators. The operators include Littlewood‐Paley operator, Marcinkiewicz integral, and Bochner‐Riesz operator.
Liu Lanzhe
wiley   +1 more source

Hörmander type theorems for multi-linear and multi-parameter Fourier multiplier operators with limited smoothness [PDF]

open access: yes, 2020
MSC: 42B15 42B25 42B20 Keywords: Multi-parameter and multi-linear multiplier Coifman-Meyer theorem Hörmander multiplier Minimal smoothness condition Littlewood-Paley's inequality A p weights a b s t r a c t The main purpose of this paper is three ...
Guozhen Lu, Jiao Chen
core  

Continuity for some multilinear operators of integral operators on Triebel‐Lizorkin spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2004, Issue 38, Page 2039-2047, 2004., 2004
The continuityfor some multilinear operators related to certain fractional singular integral operators on Triebel‐Lizorkin spaces is obtained. The operators include Calderon‐Zygmund singular integral operator and fractional integral operator.
Liu Lanzhe
wiley   +1 more source

Parabolic sublinear operators with rough kernel generated by parabolic calderön-zygmund operators and parabolic local campanato space estimates for their commutators on the parabolic generalized local morrey spaces

open access: yesOpen Mathematics, 2016
In this paper, the author introduces parabolic generalized local Morrey spaces and gets the boundedness of a large class of parabolic rough operators on them. The author also establishes the parabolic local Campanato space estimates for their commutators
Gurbuz Ferit
doaj   +1 more source

Regularity estimates for fractional orthotropic p-Laplacians of mixed order

open access: yesAdvances in Nonlinear Analysis, 2022
We study robust regularity estimates for a class of nonlinear integro-differential operators with anisotropic and singular kernels. In this paper, we prove a Sobolev-type inequality, a weak Harnack inequality, and a local Hölder estimate.
Chaker Jamil, Kim Minhyun
doaj   +1 more source

Quantitative Two‐Weight Boundedness for Iterated Commutators of Multilinear Fractional Operators With Lα,r′‐Hörmander Conditions

open access: yesJournal of Function Spaces, Volume 2025, Issue 1, 2025.
In this paper, we investigate the quantitative two‐weight boundedness for iterated commutators of multilinear fractional operators with Lα,r′‐Hörmander conditions. The analysis relies heavily on sparse domination techniques for the operators. We extend the result already established to the multilinear setting and to iterated commutators.
Zhidan Wang   +2 more
wiley   +1 more source

Rough singular integrals on product spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2004, Issue 67, Page 3671-3684, 2004., 2004
We study the mapping properties of singular integral operators defined by mappings of finite type. We prove that such singular integral operators are bounded on the Lebesgue spaces under the condition that the singular kernels are allowed to be in certain block spaces.
Ahmad Al-Salman, Hussain Al-Qassem
wiley   +1 more source

The dimension-free estimate for the truncated maximal operator

open access: yesOpen Mathematics, 2022
We mainly study the dimension-free Lp{L}^{p}-inequality of the truncated maximal operator Mnaf(x)=supt>01∣Ba1∣∫Ba1f(x−ty)dy,{M}_{n}^{a}f\left(x)=\mathop{\sup }\limits_{t\gt 0}\frac{1}{| {B}_{a}^{1}| }\left|\mathop{\int }\limits_{{B}_{a}^{1}}f\left(x-ty){\
Nie Xudong, Wang Panwang
doaj   +1 more source

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