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We analyze the fine structure of Clark measures and Clark isometries associated with two-variable rational inner functions on the bidisk. In the degree (n,1) case, we give a complete description of supports and weights for both generic and…

Functional Analysis · Mathematics 2023-12-12 Kelly Bickel , Joseph A. Cima , Alan A. Sola

We study Clark measures associated with general two-variable rational inner functions (RIFs) on the bidisk, including those with singularities, and with general $d$-variable rational inner functions with no singularities. We give precise…

Functional Analysis · Mathematics 2024-10-29 John T. Anderson , Linus Bergqvist , Kelly Bickel , Joseph A. Cima , Alan A. Sola

Given a bounded symmetric domain $D$, we study (positive) pluriharmonic functions on $D$ and investigate a possible analogue of the family of Clark measures associated with a holomorphic function from $D$ into the unit disc in $\mathbb C$.

Complex Variables · Mathematics 2024-07-15 Mattia Calzi

We provide some new sharp embeddings for p-Carleson and related measures in the unit disk of the complex plane

Complex Variables · Mathematics 2012-02-21 Romi Shamoyan , Ali Abkar

In this paper, we study the compactness of the product and the commutator of two inner projections on the Hardy spaces over the unit disk and the polydisc. For the single-variable case, we provide a complete characterization of the…

Functional Analysis · Mathematics 2026-04-28 Peiran Zhang , Roumei Tian , Yufeng Lu , Yixin Yang , Chao Zu

Characteristic functions of linear operators are analytic functions that serve as complete unitary invariants. Such functions, as long as they are built in a natural and canonical manner, provide representations of inner functions on a…

Functional Analysis · Mathematics 2025-02-04 Ramlal Debnath , Deepak K. Pradhan , Jaydeb Sarkar

We study the invariant subspaces generated by inner functions for a class of $\mathcal{P}^t(\mu)$-spaces which can be identified as spaces of analytic functions in the unit disk $\mathbb{D}$, where $\mu$ is a measure supported in the closed…

Functional Analysis · Mathematics 2021-08-23 Adem Limani , Bartosz Malman

In the present article, we further investigate the properties of squeezing function corresponding to polydisk. We work out some explicit expressions of squeezing function corresponding to polydisk.

Complex Variables · Mathematics 2021-08-24 Naveen Gupta , Akhil Kumar

The paper treats density measures as typical examples of finitely additive measures in $\mathbb{R}^n$. We study their structure and derive basic properties. In addition, estimates for related integrals are provided. The results are applied…

Analysis of PDEs · Mathematics 2026-03-26 Moritz Schönherr , Friedemann Schuricht

Rational inner functions are a generalization of finite Blaschke products to several variables. In this article we survey a variety of results about rational inner functions related to interpolation, sums of squares formulas, and boundary…

Functional Analysis · Mathematics 2025-02-20 Greg Knese

We analyze invariant measures of two coupled piecewise linear and everywhere expanding maps on the synchronization manifold. We observe that though the individual maps have simple and smooth functions as their stationary densities, they…

Chaotic Dynamics · Physics 2017-08-11 Deepak Jalla , Kiran M. Kolwankar

In this article we examine Dirichlet type spaces in the unit polydisc, and multipliers between these spaces. These results extend the corresponding work of G. D. Taylor in the unit disc. In addition, we consider functions on the polydisc…

Functional Analysis · Mathematics 2007-05-23 Daniel Jupiter , David Redett

We analyze certain compositions of rational inner functions in the unit polydisk $\mathbb{D}^{d}$ with polydegree $(n,1)$, $n\in \mathbb{N}^{d-1}$, and isolated singularities in $\mathbb{T}^d$. Provided an irreducibility condition is met,…

Complex Variables · Mathematics 2023-02-02 Alan Sola

In the present article, we define squeezing function corresponding to polydisk and study its properties. We investigate relationship between squeezing fuction and squeezing function corresponding to polydisk.

Complex Variables · Mathematics 2022-10-11 Naveen Gupta , Sanjay Kumar Pant

In this note we present a new proof of the Carleson Embedding Theorem on the unit disc and unit ball. The only technical tool used in the proof of this fact is Green's formula. The starting point is that every Carleson measure gives rise to…

Classical Analysis and ODEs · Mathematics 2010-05-05 Stefanie Petermichl , Sergei Treil , Brett D. Wick

Analytic self-maps of the unit disc whose hyperbolic derivative is uniformly bounded by a constant smaller than one, are called contractive. We describe these maps in terms of their Aleksandrov-Clark measures and in terms of their…

Complex Variables · Mathematics 2026-04-16 Artur Nicolau

A simple construction of Euclidean invariant and reflection positive measures on the cylindrical compactification is performed under a weaker hypothesis than has recently been obtained. Moreover, the results are extended to the case when…

Functional Analysis · Mathematics 2022-09-05 Tamer Tlas

To identify some way to measure the quark transversity, this thesis analyzes one-particle and two-particle inclusive deep inelastic scattering, where one and two of the outgoing hadrons are detected in coincidence with the electron. It is…

High Energy Physics - Phenomenology · Physics 2009-09-29 A. Bacchetta

We introduce a new class of multiplications of distributions in one dimension merging together two different regularizations of distributions. Some of the features of these multiplications are discussed in a certain detail. We use our…

Mathematical Physics · Physics 2009-04-02 F. Bagarello

In this article, we give a general characterization of Carleson measures involving concave or convex growth functions. We use this characterization to establish continuous injections and also to characterize the set of pointwise multipliers…

Classical Analysis and ODEs · Mathematics 2023-09-12 J. M Tanoh Dje , Benoit F. Sehba
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