{"title":"Two-weighted estimates of the multilinear fractional integral operator between weighted Lebesgue and Lipschitz spaces with optimal parameters","authors":"Fabio Berra, Gladis Pradolini, Wilfredo Ramos","doi":"10.33044/revuma.4346","DOIUrl":null,"url":null,"abstract":"Given an $m$-tuple of weights $\\vec{v}=(v_1,\\dots,v_m)$, we characterize the classes of pairs $(w,\\vec{v})$ involved with the boundedness properties of the multilinear fractional integral operator from $\\prod_{i=1}^mL^{p_i}\\left(v_i^{p_i}\\right)$ into suitable Lipschitz spaces associated to a parameter $\\delta$, $\\mathcal{L}_w(\\delta)$. Our results generalize some previous estimates not only for the linear case but also for the unweighted problem in the multilinear context. We emphasize the study related to the range of the parameters involved with the problem described above, which is optimal in the sense that they become trivial outside of the region obtained. We also exhibit nontrivial examples of pairs of weights in this region.","PeriodicalId":54469,"journal":{"name":"Revista De La Union Matematica Argentina","volume":"3 1","pages":"0"},"PeriodicalIF":0.6000,"publicationDate":"2023-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Revista De La Union Matematica Argentina","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.33044/revuma.4346","RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATHEMATICS","Score":null,"Total":0}
引用次数: 2
Abstract
Given an $m$-tuple of weights $\vec{v}=(v_1,\dots,v_m)$, we characterize the classes of pairs $(w,\vec{v})$ involved with the boundedness properties of the multilinear fractional integral operator from $\prod_{i=1}^mL^{p_i}\left(v_i^{p_i}\right)$ into suitable Lipschitz spaces associated to a parameter $\delta$, $\mathcal{L}_w(\delta)$. Our results generalize some previous estimates not only for the linear case but also for the unweighted problem in the multilinear context. We emphasize the study related to the range of the parameters involved with the problem described above, which is optimal in the sense that they become trivial outside of the region obtained. We also exhibit nontrivial examples of pairs of weights in this region.
期刊介绍:
Revista de la Unión Matemática Argentina is an open access journal, free of charge for both authors and readers. We publish original research articles in all areas of pure and applied mathematics.