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We revisit the Bohnenblust--Hille multilinear and polynomial inequalities and prove some new properties. Our main result is a multilinear version of a recent result on polynomials whose monomials have a uniformly bounded number of…

Functional Analysis · Mathematics 2020-04-07 Djair Paulino , Daniel Pellegrino , Joedson Santos

In the nonlinear field of multilinear operators and homogeneous polynomials between Banach spaces, we develop a technique, based on the transformation of vector-valued sequences, to create new examples of hyper-ideals of multilinear…

Functional Analysis · Mathematics 2021-10-04 Geraldo Botelho , Raquel Wood

We introduce and study the concept of positive polynomial ideals between Banach lattices. The paper develops the basic principles of these classes and presents methods for constructing positive polynomial ideals from given positive operator…

Functional Analysis · Mathematics 2025-09-05 Adel Bounabab , Khalil Saadi

We introduce and develop the notion of hyper-ideals of multilinear operators between Banach spaces. While the well studied notion of ideals of multilinear operators (multi-ideals) relies on the composition with linear operators, the notion…

Functional Analysis · Mathematics 2015-04-03 Geraldo Botelho , Ewerton R. Torres

In view of the fact that some classical methods to construct multi-ideals fail in constructing hyper-ideals, in this paper we develop two new methods to construct hyper-ideals of multilinear operators between Banach spaces. These methods…

Functional Analysis · Mathematics 2015-11-11 Geraldo Botelho , Ewerton R. Torres

Bayart, Pellegrino and Seoane recently proved that the polynomial Bohnenblust--Hille inequality for complex scalars is subexponential. We show that a vector valued polynomial Bohnenblust-Hille inequality on complex Banach lattices is also…

Functional Analysis · Mathematics 2015-05-13 N. Albuquerque , D. Núñez-Alarcón , D. M. Serrano-Rodríguez

We prove that the Lorentz sequence space $\ell_{\frac{2m}{m+1},1}$ is, in a~precise sense, optimal among all symmetric Banach sequence spaces satisfying a Bohnenblust-Hille type inequality for $m$-linear forms or $m$-homogeneous polynomials…

Functional Analysis · Mathematics 2015-08-25 Andreas Defant , Mieczysław Mastyło

We prove that the multilinear Bohnenblust--Hille is a particular case of a quite general family of optimal inequalities.

Functional Analysis · Mathematics 2015-10-01 N. Albuquerque , F. Bayart , D. Pellegrino , J. Seoane-Sepulveda

We show that for each Banach ideal of homogeneous polynomials, there exists a (necessarily unique) Banach operator ideal compatible with it. Analogously, we prove that any ideal of $n$-homogeneous polynomials belongs to a coherent sequence…

Functional Analysis · Mathematics 2012-01-20 Daniel Carando , Verónica Dimant , Santiago Muro

Classes of homogeneous polynomials between Banach spaces have been studied in the last three decades from the perspective of the so-called ideal property: if a polynomial P belongs to a class Q, then the composition u o P o v of P with…

Functional Analysis · Mathematics 2016-10-04 Geraldo Botelho , Ewerton R. Torres

We show that a recent interpolative new proof of the Bohnenblust--Hille inequality, when suitably handled, recovers its best known constants. This seems to be unexpectedly surprising since the known interpolative approaches only provide…

Functional Analysis · Mathematics 2013-10-14 Daniel Pellegrino , Juan B. Seoane-Sepúlveda

In this paper we obtain some statements concerning ideals of polynomials and apply these results in a number of different situations. Among other results, we present new characterizations of $\mathcal{L}_{\infty}$-spaces, Coincidence…

Functional Analysis · Mathematics 2007-05-23 Daniel M. Pellegrino

In 2015, using an innovative technique, Carando, Defant and Sevilla-Peris succeeded in proving a Bohnenblust--Hille type inequality with constants of polynomial growth in $m$ for a certain family of complex $m$-homogeneous polynomials. In…

Functional Analysis · Mathematics 2018-04-02 Mariana Maia , Tony Nogueira , Daniel Pellegrino

The Bohnenblust-Hille inequality and its variants have found applications in several areas of Mathematics and related fields. The control of the constants for the variant for complex $m$-homogeneous polynomials is of special interest for…

Functional Analysis · Mathematics 2019-10-08 Diana Marcela Serrano Rodríguez , Fernando Cabral Alves

The Bohnenblust--Hille (polynomial and multilinear) inequalities were proved in 1931 in order to solve Bohr's absolute convergence problem on Dirichlet series. Since then these inequalities have found applications in various fields of…

Functional Analysis · Mathematics 2013-09-12 G. A. Muñoz-Fernández , D. Pellegrino , J. Ramos Campos , J. B. Seoane-Sepúlveda

It was recently proved by Bayart et al. that the complex polynomial Bohnenblust--Hille inequality is subexponential. We show that, for real scalars, this does no longer hold. Moreover, we show that, if $D_{\mathbb{R},m}$ stands for the real…

What is an adequate extension of an operator ideal I to the polynomial and multilinear settings? This question motivated the appearance of the concepts of coherent sequences of polynomial ideals and compatibility of a polynomial ideal with…

Functional Analysis · Mathematics 2015-10-02 Daniel Pellegrino , Joilson Ribeiro

Let $X_1, \ldots, X_n,Y$ be classes of Banach spaces-valued sequences. An $n$-linear operator $A$ between Banach spaces belongs to the ideal of $(X_1, \ldots, X_n;Y)$-summing multilinear operators if $(A(x_j^1, \ldots, x_j^n))_{j=1}^\infty$…

Functional Analysis · Mathematics 2023-06-22 Geraldo Botelho , Ariel S. Santiago

We give a variant of the Bohenblust-Hille inequality which, for certain families of polynomials, leads to constants with polynomial growth in the degree.

Functional Analysis · Mathematics 2019-09-11 Daniel Carando , Andreas Defant , Pablo Sevilla-Peris

In this paper, we construct the abstract ideal of polynomials. We show this is an ideal of Banach and, in a second moment, we explore the question of the coherence and compatibility of the pair composed by the abstract ideals of polynomials…

Functional Analysis · Mathematics 2017-10-31 Joilson Ribeiro , Fabrício Santos
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