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We prove new summability properties for multilinear operators on $\ell_p$ spaces. An important tool for this task is a better understanding of the interplay between almost summing and absolutely summing multilinear operators.

Functional Analysis · Mathematics 2014-04-07 O. Blasco , G. Botelho , D. Pellegrino , P. Rueda

We investigate the summability of the coefficients of $m$-homogeneous polynomials and $m$-linear mappings defined on $\ell_{p}$-spaces. In our research we obtain results on the summability of the coefficients of $m$-linear mappings defined…

Functional Analysis · Mathematics 2019-09-11 Verónica Dimant , Pablo Sevilla-Peris

We show that given a positive integer $m$, a real number $p\in\left[ 2,\infty\right)$ and $1\leq s<p^{\ast}$ the set of non--multiple $\left( r;s\right)$--summing $m$--linear forms on $\ell_{p}\times\cdots\times \ell_{p}$ contains, except…

Functional Analysis · Mathematics 2015-09-08 Gustavo Araujo , Daniel Pellegrino

We study extendibility of diagonal multilinear operators from $\ell_p$ to $\ell_q$ spaces. We determine the values of $p$ and $q$ for which every diagonal $n$-linear operator is extendible, and those for which the only extendible ones are…

Functional Analysis · Mathematics 2014-03-19 Daniel Carando , Verónica Dimant , Pablo Sevilla-Peris , Román Villafañe

In this article we focus on $L^{p}$ estimates for two types of multilinear lacunary maximal averages over hypersurfaces with curvature conditions. Moreover, we give a different proof for the bilinear lacunary spherical maximal functions. To…

Classical Analysis and ODEs · Mathematics 2024-01-24 Chu-hee Cho , Jin Bong Lee , Kalachand Shuin

This note provides new closed forms evaluations of a few classes of exponential sums associated with elliptic curves and hyperelliptic curves.

Number Theory · Mathematics 2011-03-23 N. A. Carella

We consider polynomials of a few linear forms and show how exploit this type of sparsity for optimization on some particular domains like the Euclidean sphere or a polytope. Moreover, a simple procedure allows to detect this form of…

Optimization and Control · Mathematics 2022-04-05 Jean-Bernard Lasserre

Several estimates for singular integrals, maximal functions and the spherical summation operator are given in the spaces $L^p_{\text{rad}}L^2_{\text{ang}}(\mathbb{R}^n)$, $n\geq 2$.

Classical Analysis and ODEs · Mathematics 2013-12-19 Antonio Córdoba

In dimensions $n\ge 2$ we obtain $L^{p_1}(\mathbb R^n) \times\dots\times L^{p_m}(\mathbb R^n)$ to $L^p(\mathbb R^n)$ boundedness for the multilinear spherical maximal function in the largest possible open set of indices and we provide…

Classical Analysis and ODEs · Mathematics 2019-11-12 Georgios Dosidis

We analyze the interplay between maximal/minimal/adjoint ideals of multilinear operators (between sequence spaces) and their associated K\"othe sequence spaces. We establish relationships with spaces of multipliers and apply these results…

Functional Analysis · Mathematics 2017-11-17 Verónica Dimant , Román Villafañe

We prove that the multiple summing norm of multilinear operators defined on some $n$-dimensional real or complex vector spaces with the $p$-norm may be written as an integral with respect to stables measures. As an application we show…

Functional Analysis · Mathematics 2015-03-06 Daniel Carando , Verónica Dimant , Santiago Muro , Damián Pinasco

We introduce a general definition of almost $p$-summing mappings and give several concrete examples of such mappings. Some known results are considerably generalized and we present various situations in which the space of almost $p$-summing…

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

We use the H\"{o}lder inequality for mixed exponents to prove some optimal variants of the generalized Hardy--Littlewood inequality for $m$-linear forms on $\ell _{p}$ spaces with mixed exponents. Our results extend recent results of Araujo…

Functional Analysis · Mathematics 2016-10-05 Nacib Albuquerque , Tony Nogueira , Daniel Nunez-Alarcon , Daniel Pellegrino , Pilar Rueda

We develop a constructive process which determines all extreme points of the unit ball of the space of $m$--linear forms, $m\geq1.$ Our method provides a full characterization of the geometry of that space through finitely many elementary…

Functional Analysis · Mathematics 2017-08-02 W. V. Cavalcante , D. M. Pellegrino , E. V. Teixeira

In this note we give a characterization of $\ell^{p}\times ...\times \ell^{p}\to\ell^q$ boundedness of maximal operators associated to multilinear convolution averages over spheres in $\mathbb{Z}^n$.

Classical Analysis and ODEs · Mathematics 2019-08-15 Brian Cook

We prove some weighted $L_p$ estimates for generalized harmonic extensions in the half-space.

Classical Analysis and ODEs · Mathematics 2019-03-08 Roberta Musina , Alexander I. Nazarov

In this paper, several weighted summation formulas of $q$-hyperharmonic numbers are derived. As special cases, several formulas of hyperharmonic numbers of type $\sum_{\ell=1}^{n} {\ell}^{p} H_{\ell}^{(r)}$ and $\sum_{\ell=0}^{n} {\ell}^{p}…

Number Theory · Mathematics 2021-03-04 Takao Komatsu , Rusen Li

In this paper we introduce a new approach to the concept of multipolynomials and generalize several results of the homogeneous polynomials and symmetric multilinear applications. We also present an abstract approach to the concept of…

Functional Analysis · Mathematics 2018-11-19 Joilson Ribeiro , Fabrício Santos

In this paper we obtain some new estimates for multilinear exponential sums in prime fields with a more general class of weights than previously considered. Our techniques are based on some recent progress of Shkredov on multilinear sums…

Number Theory · Mathematics 2019-08-29 Bryce Kerr , Simon Macourt

We prove L^p estimates for a class of two-dimensional multilinear forms that naturally generalize (dyadic variants of) both classical paraproducts and the twisted paraproduct introduced in [5] and studied in [1] and [6]. The method we use…

Classical Analysis and ODEs · Mathematics 2012-07-24 Vjekoslav Kovač
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