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Related papers: The Geometry of the Dyadic Maximal Operator

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We prove a sharp integral inequality for the dyadic maximal operator, connecting integrals of $\phi$, and of the dyadic maximal function of $\phi$.

Classical Analysis and ODEs · Mathematics 2017-02-07 Anastasios D. Delis , Eleftherios N. Nikolidakis

We prove a sharp integral inequality for the dyadic maximal operator and give as an application another proof for the computation of its Bellman function of three variables.

Functional Analysis · Mathematics 2014-04-01 Eleftherios Nikolidakis , Antonios Melas

We prove a sharp integral inequality for the dyadic maximal operator due to which the evaluation of the Bellman function of this operator with respect to two variables is possible, as can be seen in [3]. Our inequality of interest is proved…

Functional Analysis · Mathematics 2019-09-23 Eleftherios N. Nikolidakis

We give an alternative proof of a sharp generalization of an integral inequality for the dyadic maximal operator due to which the evaluation of the Bellman function of this operator with respect to two variables, is possible. This last…

Classical Analysis and ODEs · Mathematics 2016-04-12 Eleftherios N. Nikolidakis

We prove a sharp multiparameter integral inequality for the dyadic maximal operator which refines the one-parameter inequality that is given by A.Melas in [4] which in turn is applied for the evaluation of the Bellman function of two…

Functional Analysis · Mathematics 2025-10-28 Eleftherios N. Nikolidakis

We prove some sharp Hardy type inequalities related to the Dirac operator by elementary, direct methods. Some of these inequalities have been obtained previously using spectral information about the Dirac-Coulomb operator. Our results are…

Mathematical Physics · Physics 2007-05-23 J. Dolbeault , M. J. Esteban , M. Loss , L. Vega

We provide a description for the Bellman function related to the Carleson Imbedding theorem, first mentioned in [4], with the use of the Hardy operator.

Functional Analysis · Mathematics 2019-05-20 Eleftherios N. Nikolidakis

In this paper we prove sharp Hardy inequalities by using Maximal function theory. Our results improve and extend the well-known results of G.Hardy \cite{Ha04}, T.Cazenave \cite {Ca03}, J.-Y.Chemin\cite {Ch06} and T.Tao\cite {TT06}.

Analysis of PDEs · Mathematics 2007-05-23 Jia Yuan , Junyong Zhang

We give a direct proof of the operator valued Hardy-Littlewood maximal inequality for $2<p<\infty$.

Functional Analysis · Mathematics 2024-09-04 ChianYeong Chuah , Zhenchuan Liu , Tao Mei

We prove that the extremal sequences for the Bellman function of the dyadic maximal operator behave approximately as eigenfunctions of this operator for a specific eigenvalue. We use this result to prove the analogous one with respect to…

Functional Analysis · Mathematics 2019-10-15 Eleftherios Nikolidakis

In this paper, we prove a sharp, weighted Hardy-type inequality for the Dirac operator. A key feature of our result is that the inequality is not only sharp but also attained, and we construct explicit minimizers that satisfy the equality…

Analysis of PDEs · Mathematics 2024-11-18 Luca Fanelli , Fabio Pizzichillo

We define a generalized dyadic maximal operator involving the infinite product and discuss weighted inequalities for the operator. A formulation of the Carleson embedding theorem is proved. Our results depend heavily on a generalized…

Classical Analysis and ODEs · Mathematics 2014-04-29 Wei Chen , Ruijuan Chen , Chao Zhang

We study properties for the sharp upper bound for integral quantities related to the Bellman function of three integral variables of the dyadic maximal operator, that is determined in [11].

Classical Analysis and ODEs · Mathematics 2025-01-22 Eleftherios N. Nikolidakis

We obtain sharp upper bounds for integral quantities related to the Bellman function of three integral variables of the dyadic maximal operator.

Classical Analysis and ODEs · Mathematics 2023-12-12 Eleftherios Nikolidakis

We compute the Bellman function of three integral variables associated to the dyadic maximal operator on a subset of its domain. Additionally, we provide an upper bound for the whole domain of its definition.

Functional Analysis · Mathematics 2017-02-07 Anastasios D. Delis , Eleftherios N. Nikolidakis

We prove a one-dimensional Hardy inequality on the halfline with sharp constant, which improves the classical form of this inequality. As a consequence of this new inequality we can rederive known doubly weighted Hardy inequalities. Our…

Analysis of PDEs · Mathematics 2022-04-05 Rupert L. Frank , Ari Laptev , Timo Weidl

We precisely compute the Bellman function of two variables of the dyadic maximal operator in relation to Kolmogorov inequality. In this way we give an alternative proof of the results in [5].Additionally, we characterize the sequences of…

Functional Analysis · Mathematics 2014-04-01 Eleftherios Nikolidakis

In this note we describe some recent advances in the area of maximal function inequalities. We also study the behaviour of the centered Hardy-Littlewood maximal operator associated to certain families of doubling, radial decreasing…

Classical Analysis and ODEs · Mathematics 2013-02-12 J. M. Aldaz , J. Pérez Lázaro

We obtain sharp estimates for the quasi norm of the maximal function of f when it satisfies certain conditions.

Functional Analysis · Mathematics 2010-01-28 Eleftherios N. Nikolidakis

We obtain optimal generalized versions of Hardy inequalities, which as special cases contain Hardy's inequality and Hardy's inequality involving the distance function to the boundary of $ \Omega$. In addition we obtain neccesary and…

Analysis of PDEs · Mathematics 2008-05-07 Craig Cowan
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