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Related papers: A note on multiple summing operators and applicati…

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We give some new characterizations of strictly Lipschitz p-summing operators. These operators have been introduced in order to improve the Lipschitz p-summing operators. Therefore, we adapt this definition for constructing other classes of…

Functional Analysis · Mathematics 2017-03-07 Maatougui Belaala , Khalil Saadi

We prove some extensions of Andrews inequality.

Differential Geometry · Mathematics 2020-11-02 Hao Fang , Biao Ma , Wei Wei

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

In this paper, we establish some new inequalities for functions whose third derivatives in the absolute value are m-convex.

Functional Analysis · Mathematics 2011-12-16 M. Emin Özdemir , Merve Avci , Havva Kavurmaci

In this paper we obtain some new refinements and reverses of Young's operator inequality. Extensions for convex functions of operators are also provided.

Functional Analysis · Mathematics 2015-10-07 Silvestru Sever Dragomir

Let $x=a+ib$ be a complex number, so we have the following inequality $$(1/\sqrt{2})|a+b|\leq |x|\leq |a|+|b|$$ We give an operator version of above inequality. Also we obtain some results for normal operators.

Functional Analysis · Mathematics 2015-12-08 Ali Taghavi , Vahid Darvish

Sums of the form $\sum_{q \leq N_1 < \cdots < N_m \leq n}{a_{(m);N_m}\cdots a_{(2);N_2}a_{(1);N_1}}$ date back to the sixteen century when Vi\`ete illustrated that the relation linking the roots and coefficients of a polynomial had this…

Combinatorics · Mathematics 2022-04-25 Roudy El Haddad

We present an abstract result that characterizes the coincidence of certain classes of linear operators with the class of Cohen strongly summing linear operators. Our argument is extended to multilinear operators and, as a consequence, we…

Functional Analysis · Mathematics 2013-06-03 Jamilson Ramos Campos

The search for sharp constants for inequalities of the type Littlewood's 4/3 and Bohnenblust-Hille, besides its pure mathematical interest, has shown unexpected applications in many different fields, such as Analytic Number Theory, Quantum…

Functional Analysis · Mathematics 2015-10-02 D. Nunez-Alarcon , D. Pellegrino , J. B. Seoane-Sepulveda

We construct a general framework that generates classes of multilinear operators between Banach spaces which encompasses, as particular cases, the several classes of summing type multilinear operators that have been studied individually in…

Functional Analysis · Mathematics 2021-11-12 Geraldo Botelho , Davidson Freitas

In this paper, we explore the concept of multilinear operators that are multiple almost summing and present a new concept of type and cotype of multilinear operators and investigate the conditions for this new concept to recover the…

Functional Analysis · Mathematics 2021-09-23 Joilson Ribeiro , Fabrício Santos

Power series in which the summand satisfies a linear recurrence relation with polynomial coefficients are shown to be the solution of a linear differential or algebraic equation. Solving the associated differential or algebraic equation…

General Mathematics · Mathematics 2026-01-19 Erik Talvila

In this paper, we improve the famous Reid Inequality related to linear operators. Some monotony results for positive operators are also established with a different approach from what is known in the existing literature. Lastly, Reid and…

Functional Analysis · Mathematics 2017-07-12 Souheyb Dehimi , Mohammed Hichem Mortad

In this note we prove the optimality of a family of known coincidence theorems for absolutely summing multilinear operators. We connect our results with the theory of multiple summing multilinear operators and prove the sharpness of similar…

Functional Analysis · Mathematics 2015-10-06 Daniel Pellegrino

Multilinear trace restriction inequalities are obtained for Hardy's inequality. More generally, detailed development is given for new multilinear forms for Young's convolution inequality, and a new proof for the multilinear…

Analysis of PDEs · Mathematics 2013-11-27 William Beckner

We prove an inequality for polynomials applied in a symmetric way to non-commuting operators.

Functional Analysis · Mathematics 2012-03-15 John E. McCarthy , Richard Timoney

We present a new multiparameter resolvent trace expansion for elliptic operators, polyhomogeneous in both the resolvent and auxiliary variables. For elliptic operators on closed manifolds the expansion is a simple consequence of the…

Spectral Theory · Mathematics 2015-06-15 Matthias Lesch , Boris Vertman

This paper establishes several new inequalities for the $A$-norm and $A$-numerical radius of operator sums in semi-Hilbertian spaces, significantly advancing the existing theory. We present two fundamental refinements of the generalized…

Functional Analysis · Mathematics 2025-07-09 M. H. M. Rashid

In this note we apply a 4-fold sum operation to develop an associativity rule for the pairwise symplectic sum. This allows us to show that certain diffeomorphic symplectic $4$-manifolds made out of elliptic surfaces are in fact…

dg-ga · Mathematics 2008-02-03 Dusa McDuff , Margaret Symington

The goal of this article is to give a positive answer to Rockafellar's maximality of the sum conjecture in the linear multi-valued operator case.

Functional Analysis · Mathematics 2007-05-23 M. D. Voisei