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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 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 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

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 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 prove a sharp integral inequality which connects the dyadic maximal operator with the Hardy operator. We also give some applications of this inequality.

Functional Analysis · Mathematics 2012-10-25 Eleftherios 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 provide an alternative proof and expression of the Bellman function of the dyadic maximal operator in connection with the Dyadic Carleson Imbedding Theorem, which appears in [10]. We also evaluate the Bellman function of four variables…

Functional Analysis · Mathematics 2022-11-15 Eleftherios N. Nikolidakis

For p>1 we find the Bellman function of two variables associated with the dyadic maximal operator on Rn.Actually we do that in the more general setting of tree-like maximal operators.We provide a simple and elementary proof,different from…

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

We consider the strong form of the John-Nirenberg inequality for the $L^2$-based BMO. We construct explicit Bellman functions for the inequality in the continuous and dyadic settings and obtain the sharp constant as well as the precise…

Classical Analysis and ODEs · Mathematics 2011-10-11 L. Slavin , V. Vasyunin

We give a characterization of the extremal sequences for the Bellman function of three variables of the dyadic maximal operator in relation to Kolmogorov's inequality. In fact we prove that they behave approximately like eigenfunctions of…

Functional Analysis · Mathematics 2018-08-30 Eleftherios Nikolidakis

In this note we give a new proof of the sharp constant $C = e^{-1/2} + \int_0^1 e^{-x^2/2}\,dx$ in the weak (1, 1) inequality for the dyadic square function. The proof makes use of two Bellman functions $\mathbb{L}$ and $\mathbb{M}$ related…

Classical Analysis and ODEs · Mathematics 2018-12-21 Irina Holmes , Paata Ivanisvili , Alexander Volberg

In this article we use the Bellman function technique to characterize the measures for which the weighted Hardy's inequality holds on dyadic trees. We enunciate the (dual) Hardy's inequality over the dyadic tree and we use the associated…

Classical Analysis and ODEs · Mathematics 2023-10-17 Michelangelo Cavina

We study the behaviour of the constant that is provided in the articles [12] and [13], which is connected with the determination of the Bellman function of three integral variables of the dyadic maximal operator. More precisely we study the…

Classical Analysis and ODEs · Mathematics 2025-01-27 Eleftherios N. Nikolidakis

We study the behaviour of the constant that is provided in the articles [12] and [13], which is connected with the determination of the Bellman function of three integral variables of the dyadic maximal operator. More precisely we study the…

Classical Analysis and ODEs · Mathematics 2025-01-27 Eleftherios N. Nikolidakis

We find sharp constants in the symmetric integral form of the John-Nirenberg inequality. The result is based upon computation of a new interesting Bellman function.

Classical Analysis and ODEs · Mathematics 2023-02-27 Egor Dobronravov

We precisely evaluate Bellman type functions for the dyadic maximal opeator on $R^n$ and of maximal operators on martingales related to local Lorentz type estimates. Using a type of symmetrization principle, introduced for the dyadic…

Functional Analysis · Mathematics 2015-11-20 Antonios D. Melas , Eleftherios N. Nikolidakis

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
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