Results 1 to 10 of about 679 (54)

Riesz means on homogeneous trees

open access: yesConcrete Operators, 2021
Let 𝕋 be a homogeneous tree. We prove that if f ∈ Lp(𝕋), 1 ≀ p ≀ 2, then the Riesz means SzR (f) converge to f everywhere as R → ∞, whenever Re z > 0.
Papageorgiou Effie
doaj   +1 more source

Risk factors associated with higher scores in internalizing and externalizing behaviors in Chilean preschoolers

open access: yesInfant Mental Health Journal: Infancy and Early Childhood, Volume 44, Issue 5, Page 663-678, September 2023., 2023
Abstract Early detection of behavioral disorders in children is necessary for intervention. Available data show a high prevalence of child and adolescent psychiatric disorders in Chile (22.5%), but behavioral problems in younger children have not been evaluated.
Paula Bedregal   +3 more
wiley   +1 more source

Exceptional families of measures on Carnot groups

open access: yesAnalysis and Geometry in Metric Spaces, 2023
We study the families of measures on Carnot groups that have vanishing pp-module, which we call Mp{M}_{p}-exceptional families. We found necessary and sufficient Conditions for the family of intrinsic Lipschitz surfaces passing through a common point to ...
Franchi Bruno, Markina Irina
doaj   +1 more source

Almost everywhere convergence of Bochner–Riesz means on Heisenberg‐type groups

open access: yesJournal of the London Mathematical Society, Volume 103, Issue 3, Page 1066-1119, April 2021., 2021
Abstract We prove an almost everywhere convergence result for Bochner–Riesz means of Lp functions on Heisenberg‐type groups, yielding the existence of a p>2 for which convergence holds for means of arbitrarily small order. The proof hinges on a reduction of weighted L2 estimates for the maximal Bochner–Riesz operator to corresponding estimates for the ...
Adam D. Horwich, Alessio Martini
wiley   +1 more source

Sharp Hardy Identities and Inequalities on Carnot Groups

open access: yesAdvanced Nonlinear Studies, 2021
In this paper we establish general weighted Hardy identities for several subelliptic settings including Hardy identities on the Heisenberg group, Carnot groups with respect to a homogeneous gauge and Carnot–CarathĂ©odory metric, general nilpotent groups ...
Flynn Joshua, Lam Nguyen, Lu Guozhen
doaj   +1 more source

Further results on q-Lie groups, q-Lie algebras and q-homogeneous spaces

open access: yesSpecial Matrices, 2021
We introduce most of the concepts for q-Lie algebras in a way independent of the base field K. Again it turns out that we can keep the same Lie algebra with a small modification.
Ernst Thomas
doaj   +1 more source

Hardy-Littlewood-Sobolev and Stein-Weiss inequalities on homogeneous Lie groups [PDF]

open access: yes, 2018
In this note we prove the Stein-Weiss inequality on general homogeneous Lie groups. The obtained results extend previously known inequalities. Special properties of homogeneous norms play a key role in our proofs.
Kassymov, Aidyn   +2 more
core   +2 more sources

SUPERBOSONIZATION VIA RIESZ SUPERDISTRIBUTIONS

open access: yesForum of Mathematics, Sigma, 2014
The superbosonization identity of Littelmann, Sommers and Zirnbauer is a new tool for use in studying universality of random matrix ensembles via supersymmetry, which is applicable to non-Gaussian invariant distributions.
ALEXANDER ALLDRIDGE, ZAIN SHAIKH
doaj   +1 more source

Spectral multipliers for Laplacians with drift on Damek-Ricci spaces [PDF]

open access: yes, 2013
We prove a multiplier theorem for certain Laplacians with drift on Damek-Ricci spaces, which are a class of Lie groups of exponential growth. Our theorem generalizes previous results obtained by W. Hebisch, G. Mauceri and S.
Ottazzi, Alessandro, Vallarino, Maria
core   +1 more source

Modeling Tuberculosis Among Healthcare Workers

open access: yesMoroccan Journal of Pure and Applied Analysis, 2019
A mathematical model for transmission dynamics of tuberculosis among healthcare workers is formulated. Tuberculosis is an airborne disease caused by Mycobacterium tuberculosis bacteria that affect the lungs of a host.
Faniran T.S., Falade A.O., Alakija T.O.
doaj   +1 more source

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