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Related papers: Carleson embedding on tri-tree and on tri-disc

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We study a characterization of slice Carleson measures and of Carleson measures for the both the Hardy spaces $H^p(\mathbb B)$ and the Bergman spaces $\mathcal A^p(\mathbb B)$ of the quaternionic unit ball $\mathbb B$. In the case of…

Complex Variables · Mathematics 2017-01-25 Irene Sabadini , Alberto Saracco

Suppose $\mu$ be a Beltrami coefficient on the unit disk, which is compatible with a convex co-compact Fuchsian group $G$ of the second kind. In this paper we show that if $\displaystyle\frac{|\mu|^{2}}{1-|z|^{2}}dxdy $ satisfies the…

Complex Variables · Mathematics 2019-08-15 Huo Shengjin

Given a metric space (X, d), we continue our study of the distance function x\mapsto d(x,-) and its relation to bi-Lipschitz embeddings of (X, d) into R^N. As application, given a compact metric-measure space (X, d,\mu), we give three…

Metric Geometry · Mathematics 2025-01-15 H. Movahedi-Lankarani , R. Wells

Carleson measures are ubiquitous in Harmonic Analysis. In the paper of Fefferman--Kenig--Pipher in 1991 an interesting class of Carleson measures was introduced for the need of regularity problems of elliptic PDE. These Carleson measures…

Classical Analysis and ODEs · Mathematics 2012-09-11 Fedor Nazarov , Alexander Reznikov , Sergei Treil , Alexander Volberg

This paper focuses on representations of contractively embedded invariant subspaces in several variables. We present a version of the de Branges theorem for $n$-tuples of multiplication operators by the coordinate functions on analytic…

Functional Analysis · Mathematics 2018-03-28 Sushil Gorai , Jaydeb Sarkar

We use an observation of Bohr connecting Dirichlet series in the right half plane $\mathbb{C}_+$ to power series on the polydisk to interpret Carlson's theorem about integrals in the mean as a special case of the ergodic theorem by…

Complex Variables · Mathematics 2018-04-17 Meredith Sargent

We give a simple proof of the fact that a finite measure $\mu$ on the unit disk is a Carleson measure for the Dirichlet space if it satisfies the Carleson one-box condition $\mu(S(I))=O(\phi(|I|))$, where $\phi:(0,2\pi]\to(0,\infty)$ is an…

Complex Variables · Mathematics 2019-02-18 Omar El-Fallah , Karim Kellay , Javad Mashreghi , Thomas Ransford

We study the question of when two weighted variable exponent Bergman spaces or Hardy spaces are equivalent. As an application, we show that variable exponent Hardy spaces have a close relation to classical Hardy spaces when the exponent is…

Complex Variables · Mathematics 2018-09-11 Timothy Ferguson

We extend the polydisk theorem of [21], originally established for classical Cartan-Hartogs domains, to Hartogs domains over arbitrary (possibly reducible and exceptional) bounded symmetric domains. We further establish a dual counterpart…

Differential Geometry · Mathematics 2025-11-14 Andrea Loi , Roberto Mossa , Fabio Zuddas

We study embeddings of model (star-invariant) subspaces $K^p_{\Theta}$ of the Hardy space $H^p$, associated with an inner function $\Theta$. We obtain a criterion for the compactness of the embedding of $K^p_{\Theta}$ into $L^p(\mu)$…

Complex Variables · Mathematics 2015-05-13 Anton D. Baranov

We give a complete characterization of invariant subspaces for $(M_{z_1}, \ldots, M_{z_n})$ on the Hardy space $H^2(\mathbb{D}^n)$ over the unit polydisc $\mathbb{D}^n$ in $\mathbb{C}^n$, $n >1$. In particular, this yields a complete set of…

Functional Analysis · Mathematics 2017-11-13 Amit Maji , Aneesh Mundayadan , Jaydeb Sarkar , Sankar T. R

A result of Helson on general Dirichlet series $\sum a_{n} e^{-\lambda_{n}s}$ states that, whenever $(a_{n})$ is $2$-summable and $\lambda=(\lambda_{n})$ satisfies a certain condition introduced by Bohr, then for almost all homomorphism…

Functional Analysis · Mathematics 2019-09-27 Andreas Defant , Ingo Schoolmann

Let $X$ be a quasi-Banach space of analytic functions in the unit disc and let $q>0$. A finite positive Borel measure $\mu$ in the closed unit disc $\overline{\mathbb{D}}$ is called a $q$-reverse Carleson measure for $X$ if and only if…

Complex Variables · Mathematics 2024-12-04 Evgueni Doubtsov , Anton Tselishchev , Ioann Vasilyev

For a general Dirichlet series $\sum a_n e^{-\lambda_n s}$ with frequency $\lambda=(\lambda_n)_n$, we study how horizontal translation (i.e. convolution with a Poisson kernel) improves its integrability properties. We characterize…

Functional Analysis · Mathematics 2024-01-19 Daniel Carando , Andreas Defant , Felipe Marceca , Ingo Schoolmann , Pablo Sevilla-Peris

This work deals with the characterization of eigenfunctions of the Laplacian $\mathcal{L}$ on a homogeneous tree $\mathcal{X}$, which satisfy certain growth conditions. More precisely, we shall prove that the Poisson transform on…

Classical Analysis and ODEs · Mathematics 2023-11-02 Sumit Kumar Rano

We show that a disc functional on a complex manifold has a plurisubharmonic envelope if all its pullbacks by holomorphic submersions from domains of holomorphy in affine space do and it is locally bounded above and upper semicontinuous in a…

Complex Variables · Mathematics 2007-05-23 Finnur Larusson , Ragnar Sigurdsson

We generalize to the setting of 1-sided chord-arc domains, that is, to domains satisfying the interior Corkscrew and Harnack Chain conditions (these are respectively scale-invariant/quantitative versions of the openness and…

Classical Analysis and ODEs · Mathematics 2020-08-13 Juan Cavero , Steve Hofmann , José María Martell , Tatiana Toro

Let $S$ be the Lie group $\mathrm{R}^n\ltimes \mathrm{R}^+$ endowed with the left-invariant Riemannian symmetric space structure and the right Haar measure $\rho$, which is a Lie group of exponential growth. Hebisch and Steger in [Math. Z.…

Classical Analysis and ODEs · Mathematics 2010-11-16 Liguang Liu , Maria Vallarino , Dachun Yang

Motivated by some results due to Burbea we prove that if a certain sharp integral inequality holds for functions in the unit polydisc which belong to concrete Hardy spaces, then it also holds, in an appropriate form, in the case of…

Complex Variables · Mathematics 2015-01-26 Marijan Markovic

Based on the tile discretization elaborated by the author in "The Polynomial Carleson Operator", we develop a Calderon-Zygmund type decomposition of the Carleson operator. As a consequence, through a unitary method that makes no use of…

Classical Analysis and ODEs · Mathematics 2012-08-14 Victor Lie