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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

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

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

Evaluation of the Bellman functions is a difficult task. The exact Bellman functions of the dyadic Carleson Embedding Theorem 1.1 and the dyadic maximal operators are obtained in [3] and [4]. Actually, the same Bellman functions also work…

Classical Analysis and ODEs · Mathematics 2015-02-12 Jingguo Lai

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 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 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 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 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 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

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 provide some new estimates for Bellman type functions for the dyadic maximal opeator on $R^n$ and of maximal operators on martingales related to weighted spaces. Using a type of symmetrization principle, introduced for the dyadic maximal…

Functional Analysis · Mathematics 2015-11-24 Antonios D. Melas , Eleftherios N. Nikolidakis , Dimitrios Cheliotis

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 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 give a characterization of the extremal sequences for the Bellman function of the dyadic maximal operator.In fact we prove that they behave approximately like eigenfunctions of this operator for a specific eigenvalue.

Functional Analysis · Mathematics 2015-04-15 Eleftherios Nikolidakis

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

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 remark that a dyadic version of the Carleson embedding theorem for the Bergman space extends to vector-valued functions and operator-valued measures. This is in contrast to a result by Nazarov, Treil, Volberg in the context of the Hardy…

Functional Analysis · Mathematics 2014-09-15 Olivia Constantin , Laura Gavruta
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