Results 21 to 30 of about 4,676 (117)

Bernstein-Walsh type inequalities for derivatives of algebraic polynomials in quasidisks

open access: yesOpen Mathematics, 2021
In this paper, we study Bernstein-Walsh type estimates for the higher-order derivatives of an arbitrary algebraic polynomial on quasidisks.
Abdullayev Fahreddin G.
doaj   +1 more source

Arcwise Connected Domains, Quasiconformal Mappings, and Quasidisks

open access: yesAbstract and Applied Analysis, 2014
We prove that a homeomorphism f:R2→R2 is a quasiconformal mapping if and only if f(D) is an arcwise connected domain for any arcwise connected domain D⊆R2, and D is a quasidisk if and only if both D and its exterior D*=R2∖D¯ are arcwise connected domains.
Yu-Ming Chu
doaj   +1 more source

OPTIMIZATION OF CONTROLLED EXPLOSION PROCESSES PARAMETERS USING COMPLEX ANALYSIS METHODS

open access: yesInformatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2019
The optimal charge power and position necessary for forming the maximum possible size of the crater along with preservation of the integrity of the two nearby objects with the numerical quasiconformal mapping methods with the alternate parameterization ...
Andrii Ya. Bomba   +2 more
doaj   +1 more source

Hausdorff dimension of escaping sets of meromorphic functions

open access: yes, 2020
We give a complete description of the possible Hausdorff dimensions of escaping sets for meromorphic functions with a finite number of singular values. More precisely, for any given $d\in [0,2]$ we show that there exists such a meromorphic function for ...
Aspenberg, Magnus, Cui, Weiwei
core   +2 more sources

APPLIED QUASIPOTENTIAL METHOD FOR SOLVING THE COEFFICIENT PROBLEMS OF PARAMETER IDENTIFICATION OF ANISOTROPIC MEDIA

open access: yesInformatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2019
A numerical method of quasiconformal mappings for solving the coefficient problems of finding eigenvalues of the conductivity tensor having information about its directions in an anisotropic medium using applied quasipotential tomographic data is ...
Andrii Bomba   +3 more
doaj   +1 more source

On the growth of mth derivatives of algebraic polynomials in the weighted Lebesgue space

open access: yesApplied Mathematics in Science and Engineering, 2022
In this paper, we study the growth of the mth derivative of an arbitrary algebraic polynomial in bounded and unbounded general domains of the complex plane in weighted Lebesgue spaces.
F. G. Abdullayev, M. Imashkyzy
doaj   +1 more source

On the theorem of wan for K-quasiconformal hyperbolic harmonic self mappings of the unit disk [PDF]

open access: yesMathematica Moravica, 2015
We give a new glance to the theorem of Wan (Theorem 1.1) which is related to the hyperbolic bi-Lipschicity of the K-quasiconformal, K ≥ 1, hyperbolic harmonic mappings of the unit disk D onto itself.
Knežević Miljan
doaj  

Explicit Bounds and Sharp Results for the Composition Operators Preserving the Exponential Class

open access: yesJournal of Function Spaces, 2016
Let f:Ω⊂Rn→Rn be a quasiconformal mapping whose Jacobian is denoted by Jf and let EXP(Ω) be the space of exponentially integrable functions on Ω. We give an explicit bound for the norm of the composition operator Tf: u∈EXP(Ω)↦u∘f-1∈EXP(f(Ω)) and, as a ...
Fernando Farroni, Raffaella Giova
doaj   +1 more source

Dimer models and conformal structures

open access: yesCommunications on Pure and Applied Mathematics, Volume 79, Issue 2, Page 340-446, February 2026.
Abstract Dimer models have been the focus of intense research efforts over the last years. Our paper grew out of an effort to develop new methods to study minimizers or the asymptotic height functions of general dimer models and the geometry of their frozen boundaries.
Kari Astala   +3 more
wiley   +1 more source

Freely quasiconformal and locally weakly quasisymmetric mappings in metric spaces

open access: yesOpen Mathematics
In this article, we investigate the relationship between freely quasiconformal mappings and locally weakly quasisymmetric mappings in quasiconvex and complete metric spaces.
Liu Hong-Jun   +3 more
doaj   +1 more source

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