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For a domain $D \subset \mathbb C^n$, the relationship between the squeezing function and the Fridman invariants is clarified. Furthermore, localization properties of these functions are obtained. As applications, some known results…

Complex Variables · Mathematics 2021-01-29 Nikolai Nikolov , Kaushal Verma

In this note, we frst consider boundedness properties of a family of operators generalizing the Hilbert operator in the upper triangle case. In the diagonal case, we give the exact norm of these operators under some restrictions on the…

Classical Analysis and ODEs · Mathematics 2016-01-11 Justice S. Bansah , Benoit F. Sehba

We study linear and algebraic structures in sets of bounded holomorphic functions on the ball which have large cluster sets at every possible point (i.e., every point on the sphere in several complex variables and every point of the closed…

Functional Analysis · Mathematics 2019-06-07 Thiago R. Alves , Daniel Carando

The Bounded Spherical Functions are determined for a Cartan Motion Group

Differential Geometry · Mathematics 2015-03-27 Sigurdur Helgason

We introduce and study spaces of multivariate functions of bounded variation generalizing the classical Jordan and Wiener spaces. Multivariate generalizations of the Jordan space were given by several prominent researchers but each of them…

Functional Analysis · Mathematics 2018-11-20 A. Brudnyi , Yu. Brudnyi

This paper deals with the boundary behavior of functions in the de Branges--Rovnyak spaces. First, we give a criterion for the existence of radial limits for the derivatives of functions in the de Branges--Rovnyak spaces. This criterion…

Complex Variables · Mathematics 2008-02-06 Emmanuel Fricain , Javad Mashreghi

Let CBV denote the Banach algebra of all continuous real-valued functions of bounded variation, defined in [0,1]. We show that the set of strongly singular functions in CBV is nonseparably spaceable. We also prove that certain families of…

Functional Analysis · Mathematics 2013-01-23 Marek Balcerzak , Artur Bartoszewicz , Malgorzata Filipczak

This work deals with relations between a bounded cohomological invariant and the geometry of Hermitian symmetric spaces of noncompact type. The invariant, obtained from the K\"ahler class, is used to define and characterize a special class…

Differential Geometry · Mathematics 2007-05-23 Anna Wienhard

We study functions of bounded variation (and sets of finite perimeter) on a convex open set $\Omega\subseteq X$, $X$ being an infinite dimensional real Hilbert space. We relate the total variation of such functions, defined through an…

Functional Analysis · Mathematics 2024-04-02 L. Angiuli , S. Ferrari , D. Pallara

We prove the boundedness of Bergman type projections in two different analytic function spaces in bounded strongly pseudoconvex domains with the smooth boundary. Our results were previously well-known in the case of the unit disk.

Complex Variables · Mathematics 2025-08-28 R. F. Shamoyan , E. B. Tomashevskaya

We prove an implicit function theorem for functions on infinite-dimensional Banach manifolds, invariant under the (local) action of a finite dimensional Lie group. Motivated by some geometric variational problems, we consider group actions…

Differential Geometry · Mathematics 2015-02-10 Renato G. Bettiol , Paolo Piccione , Gaetano Siciliano

We study invariance properties of Colombeau generalized functions under actions of smooth Lie transformation groups. Several characterization results analogous to the smooth setting are derived and applications to generalized rotational…

Functional Analysis · Mathematics 2007-05-23 Sanja Konjik , Michael Kunzinger

In this article we introduce Variable exponent Fock spaces and study some of their basic properties such as the boundedness of evaluation functionals, density of polynomials, boundedness of a Bergman-type projection and duality.

Complex Variables · Mathematics 2017-09-05 Gerardo A. Chacon , Gerardo R. Chacon

In this paper we consider the set of all bounded subsets of totally ordered Dedekind complete Riesz spaces, equipped with the order topology. We show the existence of bounded linear functions on this set, that are invariant under group…

General Mathematics · Mathematics 2017-01-24 George Chailos

Let K be a complete discretely valued field with residue field k. If char(K) = 0, char(k) = 2 and the 2-rank of k is d, we prove that there exists an integer N depending on d such that the u-invariant of any function field in one variable…

Rings and Algebras · Mathematics 2014-04-15 R. Parimala , V. Suresh

We give embedding theorems for weighted Bergman-Orlicz spaces on the ball and then apply our results to the study of composition operators in this context. As one of the motivations of this work, we show that there exist some weighted…

Functional Analysis · Mathematics 2010-12-06 Stéphane Charpentier

We obtain new uniqueness theorems for harmonic functions defined on the unit disc or in the half plane. These results are applied to obtain new resolvent descriptions of spectral subspaces of polynomially bounded groups of operators on…

Complex Variables · Mathematics 2010-03-16 Alexander Borichev , Yuri Tomilov

In this article we study invariance properties of shift-invariant spaces in higher dimensions. We state and prove several necessary and sufficient conditions for a shift-invariant space to be invariant under a given closed subgroup of…

Classical Analysis and ODEs · Mathematics 2010-02-08 Magalí Anastasio , Carlos Cabrelli , Victoria Paternostro

We define a group as strongly bounded if every isometric action on a metric space has bounded orbits. This latter property is equivalent to the so-called uncountable strong cofinality, recently introduced by G. Bergman. Our main result is…

Group Theory · Mathematics 2010-08-04 Yves de Cornulier

We characterize functions of a Bergman space on a square by their values and derivatives on the diagonals. This problem is connected with the reachable space of the one-dimensional heat equation on a finite interval with boundary…

Complex Variables · Mathematics 2026-02-17 Andreas Hartmann , Marcu-Antone Orsoni