Results 41 to 50 of about 1,163,094 (200)

A distortion theorem for quasiconformal mappings

open access: yes, 1986
. — A distortion theorem for quasi con formal mappings. We extend to quasi-conformal mappings in the unit ball of R" a theorem of Pommcrenke concerning conformal mappings in the unit disk of the plane.
M. Zinsmeister
semanticscholar   +1 more source

New Subclass of K-Uniformly Univalent Analytic Functions with Negative Coefficients Defined by Multiplier Transformation

open access: yesAbstract and Applied Analysis, 2022
In this work, we shall derive a new subclass of univalent analytic functions denoted by Hα,β,γ,k,λ,m in the open unit disk D=z∈ℂ ...
Ma’moun I. Y. Alharayzeh, Firas Ghanim
doaj   +1 more source

A Note on Meromorphic Functions Associated With Beseel Function Defined by Hilbert Sapce Operator

open access: yesConcrete Operators, 2021
In this paper,we introduce and study a new subclass of meromorphic functions associated with a certain differential operator on Hilbert space. For this class, we obtain several properties like the coefficient inequality, growth and distortion theorem ...
Venkateswarlu B.   +3 more
doaj   +1 more source

Density Functional Theory for the Study of the Multimode Jahn-Teller Effect

open access: yesCHIMIA, 2010
The Jahn-Teller (JT) theorem states that in a molecule with a degenerate electronic state, a structural distortion must occur that lowers the symmetry, removes the degeneracy and lowers the energy.
Matija Zlatar   +3 more
doaj   +1 more source

A sharp form of the Ahlfors’ distortion theorem, with applications

open access: yes, 1984
The constant appearing in the asymptotic version of the Ahlfors' distortion theorem is 1. Also it is shown that for mean I -valent functions f = z + a2 Z9 IIa,n+II-Ia,,II < I for n 2 N(f ).
D. H. Hamilton
semanticscholar   +1 more source

Information-Theoretic Characterization and Undersampling Ratio Determination for Compressive Radar Imaging in a Simulated Environment

open access: yesEntropy, 2015
Assuming sparsity or compressibility of the underlying signals, compressed sensing or compressive sampling (CS) exploits the informational efficiency of under-sampled measurements for increased efficiency yet acceptable accuracy in information gathering,
Jingxiong Zhang   +3 more
doaj   +1 more source

Two-point distortion theorems for harmonic mappings [PDF]

open access: yesarXiv, 2022
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 sharp two-point distortion theorem when $h$ is a convex function, and normalized mappings such that $h(\D)$ is a $
arxiv  

Class of Analytic Function Related with Uniformly Convex and Janowski’s Functions

open access: yesJournal of Function Spaces, 2018
In this paper, we introduce a new subclass of analytic functions in open unit disc. We obtain coefficient estimates, extreme points, and distortion theorem. We also derived the radii of close-to-convexity and starlikeness for this class.
Akhter Rasheed   +3 more
doaj   +1 more source

Utility–Privacy Trade-Offs with Limited Leakage for Encoder

open access: yesEntropy, 2023
The utilization of databases such as IoT has progressed, and understanding how to protect the privacy of data is an important issue. As pioneering work, in 1983, Yamamoto assumed the source (database), which consists of public information and private ...
Naruki Shinohara, Hideki Yagi
doaj   +1 more source

Planar mappings of subexponentially integrable distortion -- integrability of distortion of inverses [PDF]

open access: yesarXiv, 2016
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. Math. 35 (2010), no. 1, 197--207].
arxiv  

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