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Related papers: A family of Lempert domains

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Motivated by the way two special domains, namely the symmetrized bidisc and the tetrablock, could be defined as the images of $2$-proper holomorphic images of classical Cartan domains, we present a general approach to study $2$-proper…

Complex Variables · Mathematics 2025-07-17 Gargi Ghosh , Włodzimierz Zwonek

In the paper we study the geometric properties of a large family of domains, called the generalized tetrablocks, related to the $\mu$-synthesis, containing both the family of the symmetrized polydiscs and the family of the…

Complex Variables · Mathematics 2017-09-18 Pawel Zapalowski

In this paper, we provide a class of domains in $\mathbb{C}^3$, such that every holomorphic self-map of that domain either has a fixed point or the sequence of iterates is compactly divergent. In particular, it follows that the symmetrized…

Complex Variables · Mathematics 2026-04-09 Vikramjeet Singh Chandel , Sanjoy Chatterjee , Chandan Sur

In this article, we study various properties of holomorphic retracts in Lempert domains. We associate the existence and the related form of holomorphic retracts with the linear ones, provide non-trivial examples and discuss their properties…

Complex Variables · Mathematics 2024-06-27 Gargi Ghosh , Włodzimierz Zwonek

Our first main result gives assumptions guaranteeing that proper holomorphic maps between Cartan type I bounded symmetric domains have simple block matrix shape, answering positively a question of Mok. The proof is based on the second main…

Complex Variables · Mathematics 2015-02-16 Sung Yeon Kim , Dmitri Zaitsev

The pentablock is a Hartogs domain over the symmetrized bidisc. The domain is a bounded inhomogeneous pseudoconvex domain, and does not have a $\mathcal{C}^{1}$ boundary. Recently, Agler-Lykova-Young constructed a special subgroup of the…

Complex Variables · Mathematics 2014-12-15 Guicong Su , Zhenhan Tu , Lei Wang

A complete characterization of proper holomorphic mappings between domains from the class of all pseudoconvex Reinhardt domains in $\C^2$ with the logarithmic image equal to a strip or a half-plane is given.

Complex Variables · Mathematics 2009-01-10 Lukasz Kosinski

We show that the symmetrized bidisc is a $\Bbb C$-convex domain. This provides an example of a bounded $\Bbb C$-convex domain which cannot be exhausted by domains biholomorphic to convex domains.

Complex Variables · Mathematics 2010-06-23 Nikolai Nikolov , Peter Pflug , Wlodzimierz Zwonek

In the paper we discuss three different notions of extremal holomorphic mappings: weak $m$-extremals, $m$-extremals and $m$-complex geodesics. We discuss relations between them in general case and in the special cases of unit ball,…

Complex Variables · Mathematics 2014-10-28 Łukasz Kosiński , Włodzimierz Zwonek

In the paper we show that the Lempert theorem (i.e. the equality between the Lempert function and the Carath\'eodory distance) holds in the tetrablock, a bounded hyperconvex domain which is not biholomorphic to a convex domain.

Complex Variables · Mathematics 2016-08-14 Armen Edigarian , Lukasz Kosinski , Włodzimierz Zwonek

We study and generalize a classical theorem of L. Bers that classifies domains up to biholomorphic equivalence in terms of the algebras of holomorphic functions on those domains. Then we develop applications of these results to the study of…

Complex Variables · Mathematics 2013-12-18 Steven G. Krantz

We prove that a proper holomorphic map between two bounded symmetric domains of the same dimension, one of them being irreducible, is a biholomorphism. Our methods allow us to give a single, all-encompassing argument that unifies the…

Complex Variables · Mathematics 2015-01-12 Gautam Bharali , Jaikrishnan Janardhanan

In this paper, we characterize the Hartogs domains over homogeneous Siegel domains of type II and explicitly describe their automorphism groups. Moreover we prove that any proper holomorphic map between Hartogs domains over homogeneous…

Complex Variables · Mathematics 2018-04-11 Aeryeong Seo

In this paper we characterize the unit disc, the bidisc and the symmetrized bidisc \[ G =\{(z+w,zw):|z|<1,\ |w|<1\} \] in terms of the possession of small classes of analytic maps into the unit disc that suffice to solve all Carath\'eodory…

Complex Variables · Mathematics 2018-08-07 J. Agler , Z. A. Lykova , N. J. Young

Let $\Omega\subseteq\mathbb C^n$ be a bounded symmetric domain and $f :\Omega \to \Omega^\prime\subseteq \mathbb C^n$ be a proper holomorphic mapping which is factored by a finite complex reflection group $G.$ We identify a family of…

Complex Variables · Mathematics 2025-07-17 Gargi Ghosh , Subrata Shyam Roy

We consider a class of Nichols algebras $\mathscr{B} (\mathfrak L_q( 1, \mathscr{G}))$ introduced in [3] which are domains and have many favorable properties like AS-regular and strongly noetherian. We classify their finite-dimensional…

Quantum Algebra · Mathematics 2022-10-04 Nicolás Andruskiewitsch , Dirceu Bagio , Saradia Della Flora , Daiana Flores

We extend the concept of a finite dimensional {\it holomorphic homogeneous regular} (HHR) domain and some of its properties to the infinite dimensional setting. In particular, we show that infinite dimensional HHR domains are domains of…

Complex Variables · Mathematics 2020-11-26 Cho-Ho Chu , Kang-Tae Kim , Sejun Kim

In this paper, we study the geometry of bounded domains with piecewise smooth boundary. Specifically, we obtain the relationship between the squeezing function corresponding to polydisk and Levi flatness on bounded generic convex domains.…

Complex Variables · Mathematics 2026-05-11 Xingsi Pu , Lang Wang

In this note, we provide an alternative way of describing the distinguished boundariesof symmetrized bidisc, tetrablock and pentablock. We show that each of these distinguished boundaries can be characterized as the union of orbits of two…

Complex Variables · Mathematics 2024-03-05 Nitin Tomar

In this short note we consider very general bounded minimal homogeneous domains. Under certain natural additional conditions new sharp results on Bergman type analytic spaces in minimal bounded homogeneous domains are obtained. Domains we…

Complex Variables · Mathematics 2025-08-28 R. F. Shamoyan , N. M. Makhina
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