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We continue our exploration of the family $\mathcal{S}$ of Schwarz reflection maps with respect to the cardioid and a circle which was initiated in our earlier work. We prove that there is a natural combinatorial bijection between the…

Dynamical Systems · Mathematics 2025-08-05 Seung-Yeop Lee , Mikhail Lyubich , Nikolai G. Makarov , 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 contained in this ambient character variety. This gives rise to…

Dynamical Systems · Mathematics 2026-05-05 Yusheng Luo , Mahan Mj , Sabyasachi Mukherjee

We describe a family of representations of $\pi_1(\Sigma)$ in PU(2,1), where $\Sigma$ is a hyperbolic Riemann surface with at least one deleted point. This family is obtained by a bending process associated to an ideal triangulation of…

Geometric Topology · Mathematics 2015-03-17 Pierre Will

We call every complex connected (1,1)-dimensional supermanifold a super Riemann surface and construct versal super families of compact ones, where the base spaces are allowed to be certain ringed spaces including all complex supermanifolds.…

Complex Variables · Mathematics 2015-03-19 Roland Knevel

A natural class of weighted Bergman spaces on the symmetrized polydisc is isometrically embedded as a subspace in the corresponding weighted Bergman space on the polydisc. We find an orthonormal basis for this subspace. It enables us to…

Functional Analysis · Mathematics 2011-06-21 Gadadhar Misra , Subrata Shyam Roy , Genkai Zhang

There are two frameworks for mating Kleinian groups with rational maps on the Riemann sphere: the algebraic correspondence framework due to Bullett-Penrose-Lomonaco \cite{BP94,BL20} and the simultaneous uniformization mating framework of…

Dynamical Systems · Mathematics 2025-09-22 Mahan Mj , Sabyasachi Mukherjee

In this paper, we continue exploration of the dynamical and parameter planes of one-parameter families of Schwarz reflections that was initiated in \cite{LLMM1,LLMM2}. Namely, we consider a family of quadrature domains obtained by…

Dynamical Systems · Mathematics 2021-04-26 Seung-Yeop Lee , Mikhail Lyubich , Nikolai G. Makarov , Sabyasachi Mukherjee

Suppose $R$ is a commutative ring with identity and a fixed invertible element $q^{\frac{1}{2}}$ such that $q+q^{-1}$ is invertible. For an oriented surface $\Sigma$, let $\mathcal{S}(\Sigma;R)$ denote the Kauffman bracket skein algebra of…

Geometric Topology · Mathematics 2024-06-05 Haimiao Chen

We introduce a new infinite class of superintegrable quantum systems in the plane. Their Hamiltonians involve reflection operators. The associated Schr\"odinger equations admit separation of variables in polar coordinates and are exactly…

Mathematical Physics · Physics 2015-05-30 Sarah Post , Luc Vinet , Alexei Zhedanov

Drinfeld orbifold algebras deform skew group algebras in polynomial degree at most one and hence encompass graded Hecke algebras, and in particular symplectic reflection algebras and rational Cherednik algebras. We introduce parametrized…

Rings and Algebras · Mathematics 2021-04-20 Briana Foster-Greenwood , Cathy Kriloff

The construction introduced by Gross, Hacking and Keel allows one to construct a formal mirror family to a pair $(S,D)$ where $S$ is a smooth rational projective surface and $D$ a certain type of Weil divisor supporting an ample or…

Algebraic Geometry · Mathematics 2021-03-03 Lawrence Jack Barrott

We show that, given a compact Hausdorff space $\Omega$, there is a compact group ${\mathbb G}$ and a homeomorphic embedding of $\Omega$ into ${\mathbb G}$, such that the restriction map ${\rm A}({\mathbb G})\to C(\Omega)$ is a complete…

Functional Analysis · Mathematics 2016-01-11 Yemon Choi

We prove a version of the Schwarz lemma for holomorphic mappings from the unit disk into the symmetric product of a Riemann surface. Our proof is function-theoretic and self-contained. The main novelty in our proof is the use of the…

Complex Variables · Mathematics 2019-09-10 Jaikrishnan Janardhanan

We investigate deformations of skew group algebras arising from the action of the symmetric group on polynomial rings over fields of arbitrary characteristic. Over the real or complex numbers, Lusztig's graded affine Hecke algebra and…

Representation Theory · Mathematics 2022-05-12 Naomi Krawzik , Anne Shepler

In this paper, we bring together four different branches of antiholomorphic dynamics: of global anti-rational maps, reflection groups, Schwarz reflections in quadrature domains, and antiholomorphic correspondences. We establish the first…

Dynamical Systems · Mathematics 2024-08-26 Mikhail Lyubich , Jacob Mazor , Sabyasachi Mukherjee

We show that several families of classical orthogonal polynomials on the real line are also orthogonal on the interior of an ellipse in the complex plane, subject to a weighted planar Lebesgue measure. In particular these include Gegenbauer…

Mathematical Physics · Physics 2021-05-13 G. Akemann , T. Nagao , I. Parra , G. Vernizzi

Let $\Sigma$ be a compact Riemann surface and $D_1,...,D_n$ a finite number of pairwise disjoint closed disks of $\Sigma$. We prove the existence of a proper harmonic map into the Euclidean plane from a hyperbolic domain $\Omega$ containing…

Differential Geometry · Mathematics 2009-06-16 Antonio Alarcon , Jose A. Galvez

In this paper we consider the existence of dense embeddings of Limit groups in locally compact groups generalizing earlier work of Breuillard, Gelander, Souto and Storm [GBSS] where surface groups were considered. Our main results are…

Group Theory · Mathematics 2012-04-17 Jonathan Barlev , Tsachik Gelander

We show that the Hilbert space with basis indexed by infinite permutations and the cohomology ring of the infinite flag variety can be seen as representations of the Heisenberg algebra, which are isomorphic using the back-stable Schubert…

Combinatorics · Mathematics 2024-10-01 Sylvester W. Zhang

Let $X$ be bipartite mixed graph and for a unit complex number $\alpha$, $H_\alpha$ be its $\alpha$-hermitian adjacency matrix. If $X$ has a unique perfect matching, then $H_\alpha$ has a hermitian inverse $H_\alpha^{-1}$. In this paper we…

Combinatorics · Mathematics 2022-05-17 Mohammad Abudayah , Omar Alomari , Omar AbuGhneim
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