activity
20202026
most citedDavid extension of circle homeomorphisms, welding, mating, and removability

3 citations · 5 across the 13 of their papers we have counts for

collaborators

14 papers

math.DS2026

Combining cusped triangle groups with Blaschke products: commensurable matings

Yusheng Luo, Mahan Mj, Sabyasachi Mukherjee

In this note, we construct algebraic correspondences as matings of Fuchsian -triangle groups with Blaschke products. Combined with the results of [MM25], this proves…

math.DS2026

Transcendental correspondences: when Fuchsian groups take over basins of entire maps

Kostiantyn Drach, Sabyasachi Mukherjee, Leticia Pardo-Simón

In this paper, we initiate a systematic study of holomorphic correspondences that naturally arise as conformal combinations (matings) of transcendental entire m…

math.DS2026

Universality of the Basilica

Yusheng Luo, Mahan Mj, Sabyasachi Mukherjee

We establish universality of the fat Basilica Julia set in conformal dynamics in the following sense: is quasiconformally equivalent to the fat Ba…

math.DS2025

Algebraic correspondences and Schwarz reflections: Where rational dynamics meets Kleinian groups

Luna Lomonaco, Sabyasachi Mukherjee

We present an overview of the rapidly evolving field of dynamics of algebraic correspondences, with a focus on matings between rational maps and Kleinian groups. These corresponden…

math.CV2025

On topology and singularities of quadrature domains

Rashmita, Sabyasachi Mukherjee

We prove a linear upper bound for the number of singular points on the boundary of a quadrature domain, improving a previously known quadratic bound due to Gustafsson \cite{Gus88}.…

math.DS2025

Antiholomorphic correspondences and mating II: Shabat polynomial slices

Mikhail Lyubich, Jacob Mazor, Sabyasachi Mukherjee

We study natural one-parameter families of antiholomorphic correspondences arising from Shabat polynomials, indexed by rooted dessins d'enfants. The actions of our correspondences…

math.DS2025

Correspondences on hyperelliptic surfaces, combination theorems, and Hurwitz spaces

Sabyasachi Mukherjee, S. Viswanathan

We construct a general class of holomorphic correspondences of equal bi-degree on compact Riemann surfaces of arbitrary genus exhibiting rich dynamical behavior. These corresponden…

math.DS2025

Uniformization of tongues in Double Standard Map family and variation of maximal chaotic sets

Kuntal Banerjee, Anubrato Bhattacharyya, Sabyasachi Mukherjee

We study hyperbolic components, also known as tongues, in the Double Standard Map family comprising circle maps of the form: \begin{align*} f_{a,b}(x)=\left(2x+a+\dfrac{b}π \sin(2π…

math.DS2025

Teichmüller spaces, polynomial loci, and degeneration in spaces of algebraic correspondences

Yusheng Luo, Mahan Mj, Sabyasachi Mukherjee

We develop an analog of the notion of a character variety in the context of algebraic correspondences. It turns out that matings of certain Fuchsian groups and polynomials are cont…

math.GT2024

Simultaneous Uniformization and Algebraic Correspondences

Mahan Mj, Sabyasachi Mukherjee

We prove a generalization of Bers' simultaneous uniformization theorem in the world of algebraic correspondences. More precisely, we construct algebraic correspondences that simult…

math.DS2024★ 1 cited

A general dynamical theory of Schwarz reflections, B-involutions, and algebraic correspondences

Yusheng Luo, Mikhail Lyubich, Sabyasachi Mukherjee

In this paper, we study matings of (anti-)polynomials and Fuchsian, reflection groups as Schwarz reflections, B-involutions or as (anti-)holomorphic correspondences, as well as the…

math.DS2024★ 1 cited

Mating parabolic rational maps with Hecke groups

Shaun Bullett, Luna Lomonaco, Mikhail Lyubich +1

We prove that any degree rational map having a parabolic fixed point of multiplier with a fully invariant and simply connected immediate basin of attraction is mateable wit…

math.DS2023

Mirrors of conformal dynamics: Interplay between anti-rational maps, reflection groups, Schwarz reflections, and correspondences

Mikhail Lyubich, Sabyasachi Mukherjee

The goal of this survey is to present intimate interactions between four branches of conformal dynamics: iterations of anti-rational maps, actions of Kleinian reflection groups, dy…

math.DS2020★ 3 cited

David extension of circle homeomorphisms, welding, mating, and removability

Mikhail Lyubich, Sergei Merenkov, Sabyasachi Mukherjee +1

We provide a David extension result for circle homeomorphisms conjugating two dynamical systems such that parabolic periodic points go to parabolic periodic points, but hyperbolic…