activity
20172026
most citedUnivalent Polynomials and Hubbard Trees

10 citations · 20 across the 9 of their papers we have counts for

collaborators

14 papers

math.DS2026

Dynamics of Hyperbolic Schwarz Reflections

Kirill Lazebnik

We give a conformal mating description for the class of hyperbolic Schwarz reflections with connected and full filled Julia set; this parallels the recent development in seve…

math.CV2026

Blaschke Products Sharing a Welding Homeomorphism

Kirill Lazebnik

Given two Blaschke products , of the same degree, a \emph{welding homeomorphism} of , is a circle homeomorphism satisfying $A\c…

math.CV2025

Sharp bounds for the valence of certain logharmonic polynomials

Kirill Lazebnik, Erik Lundberg

Consider a logharmonic polynomial; that is, a product of the form , where , are holomorphic polynomials. Assume is linear and denote by the degr…

math.CV2025

Rational lemniscates and the matching problem

Kirill Lazebnik, Pierre-Olivier Parisé, Malik Younsi

The matching problem for a given Jordan curve in the complex plane asks to find two nonconstant functions, one analytic in the bounded complementary component of the curve and the…

math.CV2024

On the Shapes of Rational Lemniscates

Christopher J. Bishop, Alexandre Eremenko, Kirill Lazebnik

A rational lemniscate is a level set of where is rational. We prove that any planar Euler graph can be approximated, in a s…

math.CV2023

Analytic and Topological Nets

Kirill Lazebnik

We characterize which planar graphs arise as the pullback, under a rational map , of an analytic Jordan curve passing through the critical values of . We also prove that such…

math.CV2023

A Geometric Approach to Polynomial and Rational Approximation

Christopher J. Bishop, Kirill Lazebnik

We strengthen the classical approximation theorems of Weierstrass, Runge and Mergelyan by showing the polynomial and rational approximants can be taken to have a simple geometric s…

math.DS2022

Equilateral Triangulations and The Postcritical Dynamics of Meromorphic Functions

Christopher J. Bishop, Kirill Lazebnik, Mariusz Urbański

We show that any dynamics on any planar set discrete in some domain can be realized by the postcritical dynamics of a function holomorphic in , up to a small perturbatio…

math.CV2020

Quadrature Domains and the Real Quadratic Family

Kirill Lazebnik

We study several classes of holomorphic dynamical systems associated with quadrature domains. Our main result is that real-symmetric polynomials in the principal hyperbolic compone…

math.CV2020★ 8 cited

Bers Slices in Families of Univalent Maps

Kirill Lazebnik, Nikolai G. Makarov, Sabyasachi Mukherjee

We construct embeddings of Bers slices of ideal polygon reflection groups into the classical family of univalent functions . This embedding is such that the conformal mating of…

math.CV2019★ 10 cited

Univalent Polynomials and Hubbard Trees

Kirill Lazebnik, Nikolai G. Makarov, Sabyasachi Mukherjee

We study rational functions of degree such that is univalent in the exterior unit disc, and the image of the unit circle under has the maximal number of cusps ($d…

math.DS2019★ 2 cited

Oscillating Wandering Domains for Functions with Escaping Singular Values

Kirill Lazebnik

We construct a transcendental entire such that (1) has bounded singular set, (2) has a wandering domain, and (3) each singular value of…

math.CV2018

Prescribing the Postsingular Dynamics of Meromorphic Functions

Christopher J. Bishop, Kirill Lazebnik

We show that any dynamics on any discrete planar sequence can be realized by the postsingular dynamics of some transcendental meromorphic function, provided we allow for small…

math.CV2017

Univalent Wandering Domains in the Eremenko-Lyubich Class

Núria Fagella, Xavier Jarque, Kirill Lazebnik

We use the folding theorem of Bishop to construct an entire function in class and a wandering domain of such that restricted to is univalent, for all $…