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In this paper, we establish two new versions of Landau-type theorems for pluriharmonic mappings with a bounded distortion. Then using these results, we derive three Bloch-type theorems of pluriharmonic mappings, which improve the…

复变函数 · 数学 2022-02-17 Ming-Sheng Liu , Saminathan Ponnusamy

We establish two-point distortion theorems for sense-preserving planar harmonic mappings $f=h+\overline{g}$ which satisfies the univalence criteria in the unit disc such that, Becker's and Nehari`s harmonic version. In addition, we find the…

复变函数 · 数学 2022-08-08 Víctor Bravo , Rodrigo Hernández , Osvaldo Venegas

Pluriharmonic maps form an important class of harmonic maps which includes holomorphic maps. We study their morphisms, in particular the inter-relationships between $(1,1)$-geodesic, pluriharmonic and $\pm$holomorphic maps. Then we…

dg-ga · 数学 2008-02-03 Eric Loubeau

In this paper, we establish a three circles type theorem, involving the harmonic area function, for harmonic mappings. Also, we give bounds for length and area distortion for harmonic quasiconformal mappings. Finally, we will study certain…

复变函数 · 数学 2013-09-17 Shaolin Chen , Saminathan Ponnusamy , Antti Rasila

In this paper, we define both the upper and lower order of a sense-preserving harmonic mapping in $\mathbb{D}$. We generalize to the harmonic case some known results about holomorphic functions with positive lower order and we show some…

复变函数 · 数学 2021-07-06 Arbeláez , H. , Hernández , R. , Sierra W

In this article we study fine regularity properties for mappings of finite distortion. Our main theorems yield strongly localized regularity results in the borderline case in the class of maps of exponentially integrable distortion.…

复变函数 · 数学 2021-09-28 Olli Hirviniemi , István Prause , Eero Saksman

We establish the optimal regularity for the distortion of inverses of mappings of finite distortion with logarithm-iterated style subexponentially integrable distortion, which generalizes the Theorem 1. of [J. Gill, Ann. Acad. Sci. Fenn.…

复变函数 · 数学 2016-04-11 Haiqing Xu

Distortion maps allow one to solve the Decision Diffie-Hellman problem on subgroups of points on the elliptic curve. In the case of ordinary elliptic curves over finite fields, it is known that in most cases there are no distortion maps. In…

数论 · 数学 2007-05-23 Denis Charles

The distortion varieties of a given projective variety are parametrized by duplicating coordinates and multiplying them with monomials. We study their degrees and defining equations. Exact formulas are obtained for the case of one-parameter…

代数几何 · 数学 2016-10-07 Joe Kileel , Zuzana Kukelova , Tomas Pajdla , Bernd Sturmfels

In this paper, we investigate some properties of pluriharmonic mappings defined in the unit ball. First, we discuss some geometric univalence criteria on pluriharmonic mappings, and then establish a Landau-Bloch theorem for a class of…

复变函数 · 数学 2014-02-11 Sh. Chen , S. Ponnusamy , X. Wang

This paper presents and explores a theory of \emph{multiholomorphic maps}. This group of ideas generalizes the theory of pseudoholomorphic curves in a direction suggested by consideration of the kinds of compatible geometric structures that…

微分几何 · 数学 2012-05-01 Aaron M. Smith

In this paper, we show that one can interrelate pluriharmonic maps with para-pluriharmonic maps by means of the loop group method. As an appendix, we give examples for the interrelation between pluriharmonic maps and para-pluriharmonic…

微分几何 · 数学 2010-12-03 Nobutaka Boumuki , Josef Dorfmeister

In this paper, we mainly focus on formal deformation theory of module homomorphisms. We first introduce the cohomology of module homomorphisms and study formal one-parameter deformation. We obtain some properties about obstructions. Then we…

环与代数 · 数学 2022-08-23 RB Yadav , Liangyun Chen , Yao Ma , Ying Hou

The Weil pairing on elliptic curves has deep links with discrete logarithm problems. In practice, to better suit the functionalities of cryptosystems, one often needs to modify the original Weil pairing via what is called a distortion map.…

In this paper, we continue our investigation of polyharmonic mappings in the complex plane. First, we establish two Landau type theorems. We also show a three circles type theorem and an area version of the Schwarz lemma. Finally, we study…

复变函数 · 数学 2014-03-31 Jiaolong Chen , Antti Rasila , Xiantao Wang

We generalize the Second Oversampling Theorem for wavelet frames and dual wavelet frames from the setting of integer dilations to real dilations. We also study the relationship between dilation matrix oversampling of semi-orthogonal…

泛函分析 · 数学 2012-04-16 Marcin Bownik , Jakob Lemvig

We give a short survey on plurisubharmonic interpolation, with focus on possibility of connecting two given plurisubharmonic functions by plurisubharmonic geodesic.

复变函数 · 数学 2023-07-07 Alexander Rashkovskii

We study several geometric and analytic aspects of Dirac-harmonic maps with curvature term from closed Riemannian surfaces.

微分几何 · 数学 2015-12-01 Volker Branding

The paper is devoted to the study of compositions of polyharmonic mappings in simply connected domains. More precisely, we determine necessary and sufficient conditions of polyharmonic mapping $f$ such that $f\circ F$ (resp. $F\circ f$) is…

复变函数 · 数学 2016-10-21 Gang Liu , Saminathan Ponnusamy

The purpose of this paper is to study deformation theory of Hom-associative algebra morphisms and Hom-Lie algebra morphisms. We introduce a suitable cohomology and discuss Infinitesimal deformations, equivalent deformations and…

环与代数 · 数学 2017-10-23 Anja Arfa , Nizar Ben Fraj , Abdenacer Makhlouf
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