{"title":"交换元组的弱类型算子Lipschitz和交换子估计","authors":"M. Caspers, F. Sukochev, D. Zanin","doi":"10.5802/AIF.3195","DOIUrl":null,"url":null,"abstract":"Let $f: \\mathbb{R}^d \\to\\mathbb{R}$ be a Lipschitz function. If $B$ is a bounded self-adjoint operator and if $\\{A_k\\}_{k=1}^d$ are commuting bounded self-adjoint operators such that $[A_k,B]\\in L_1(H),$ then $$\\|[f(A_1,\\cdots,A_d),B]\\|_{1,\\infty}\\leq c(d)\\|\\nabla(f)\\|_{\\infty}\\max_{1\\leq k\\leq d}\\|[A_k,B]\\|_1,$$ where $c(d)$ is a constant independent of $f$, $\\mathcal{M}$ and $A,B$ and $\\|\\cdot\\|_{1,\\infty}$ denotes the weak $L_1$-norm. If $\\{X_k\\}_{k=1}^d$ (respectively, $\\{Y_k\\}_{k=1}^d$) are commuting bounded self-adjoint operators such that $X_k-Y_k\\in L_1(H),$ then $$\\|f(X_1,\\cdots,X_d)-f(Y_1,\\cdots,Y_d)\\|_{1,\\infty}\\leq c(d)\\|\\nabla(f)\\|_{\\infty}\\max_{1\\leq k\\leq d}\\|X_k-Y_k\\|_1.$$","PeriodicalId":351745,"journal":{"name":"arXiv: Operator Algebras","volume":"15 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2017-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":"{\"title\":\"Weak type operator Lipschitz and commutator estimates for commuting tuples\",\"authors\":\"M. Caspers, F. Sukochev, D. Zanin\",\"doi\":\"10.5802/AIF.3195\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Let $f: \\\\mathbb{R}^d \\\\to\\\\mathbb{R}$ be a Lipschitz function. If $B$ is a bounded self-adjoint operator and if $\\\\{A_k\\\\}_{k=1}^d$ are commuting bounded self-adjoint operators such that $[A_k,B]\\\\in L_1(H),$ then $$\\\\|[f(A_1,\\\\cdots,A_d),B]\\\\|_{1,\\\\infty}\\\\leq c(d)\\\\|\\\\nabla(f)\\\\|_{\\\\infty}\\\\max_{1\\\\leq k\\\\leq d}\\\\|[A_k,B]\\\\|_1,$$ where $c(d)$ is a constant independent of $f$, $\\\\mathcal{M}$ and $A,B$ and $\\\\|\\\\cdot\\\\|_{1,\\\\infty}$ denotes the weak $L_1$-norm. If $\\\\{X_k\\\\}_{k=1}^d$ (respectively, $\\\\{Y_k\\\\}_{k=1}^d$) are commuting bounded self-adjoint operators such that $X_k-Y_k\\\\in L_1(H),$ then $$\\\\|f(X_1,\\\\cdots,X_d)-f(Y_1,\\\\cdots,Y_d)\\\\|_{1,\\\\infty}\\\\leq c(d)\\\\|\\\\nabla(f)\\\\|_{\\\\infty}\\\\max_{1\\\\leq k\\\\leq d}\\\\|X_k-Y_k\\\\|_1.$$\",\"PeriodicalId\":351745,\"journal\":{\"name\":\"arXiv: Operator Algebras\",\"volume\":\"15 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2017-03-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"5\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv: Operator Algebras\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.5802/AIF.3195\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv: Operator Algebras","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.5802/AIF.3195","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Weak type operator Lipschitz and commutator estimates for commuting tuples
Let $f: \mathbb{R}^d \to\mathbb{R}$ be a Lipschitz function. If $B$ is a bounded self-adjoint operator and if $\{A_k\}_{k=1}^d$ are commuting bounded self-adjoint operators such that $[A_k,B]\in L_1(H),$ then $$\|[f(A_1,\cdots,A_d),B]\|_{1,\infty}\leq c(d)\|\nabla(f)\|_{\infty}\max_{1\leq k\leq d}\|[A_k,B]\|_1,$$ where $c(d)$ is a constant independent of $f$, $\mathcal{M}$ and $A,B$ and $\|\cdot\|_{1,\infty}$ denotes the weak $L_1$-norm. If $\{X_k\}_{k=1}^d$ (respectively, $\{Y_k\}_{k=1}^d$) are commuting bounded self-adjoint operators such that $X_k-Y_k\in L_1(H),$ then $$\|f(X_1,\cdots,X_d)-f(Y_1,\cdots,Y_d)\|_{1,\infty}\leq c(d)\|\nabla(f)\|_{\infty}\max_{1\leq k\leq d}\|X_k-Y_k\|_1.$$