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We study the possible dimension vectors of indecomposable parabolic bundles on the projective line, and use our answer to solve the problem of characterizing those collections of conjugacy classes of n by n matrices for which one can find…

Algebraic Geometry · Mathematics 2007-05-23 William Crawley-Boevey

In this note, some properties of finitely generated two-periodic modules over commutative Noetherian local rings have been studied. We show that under certain assumptions on a pair of modules $\left(M,N \right)$ with $M$ two-periodic, the…

Commutative Algebra · Mathematics 2023-09-08 Nilkantha Das , Sutapa Dey

We give three families of parabolic rational maps and show that every Cantor set of circles as the Julia set of a non-hyperbolic rational map must be quasisymmetrically equivalent to the Julia set of one map in these families for suitable…

Dynamical Systems · Mathematics 2015-10-13 Weiyuan Qiu , Fei Yang , Yongcheng Yin

Two conjectures of Zuber [``On the counting of fully packed loops configurations. Some new conjectures,'' preprint] on the enumeration of configurations in the fully packed loop model on the square grid with periodic boundary conditions,…

Combinatorics · Mathematics 2007-05-23 F. Caselli , C. Krattenthaler

Suppose $\rho_1, \rho_2$ are two $\ell$-adic Galois representations of the absolute Galois group of a number field, such that the algebraic monodromy group of one of the representations is connected and the representations are locally…

Number Theory · Mathematics 2020-06-12 Vijay M. Patankar , C. S. Rajan

Using $p$-adic local Langlands correspondence for $\operatorname{GL}_2(\mathbb{Q}_2)$ and an ordinary $R = \mathbb{T}$ theorem, we prove that the support of patched modules for quaternionic forms meet every irreducible component of the…

Number Theory · Mathematics 2021-03-23 Shen-Ning Tung

We construct an explicit isomorphism between (truncations of) quiver Hecke algebras and Elias-Williamson's diagrammatic endomorphism algebras of Bott-Samelson bimodules. As a corollary, we deduce that the decomposition numbers of these…

Representation Theory · Mathematics 2023-07-03 Chris Bowman , Anton Cox , Amit Hazi

A quadratic H\'enon map is an automorphism of $\C^2$ of the form $h:(x,y)\mapsto (\l^{1/2} (x^2+c)-\l y,x)$. It has a constant Jacobian equal to $\l$ and has two fixed points. If $\lambda$ is on the unit circle (one says $h$ is…

Dynamical Systems · Mathematics 2025-11-04 Raphaël Krikorian

The paper deals with cubic 1-variable polynomials whose Julia sets are connected. Fixing a bounded type rotation number, we obtain a slice of such polynomials with the origin being a fixed Siegel point of the specified rotation number. Such…

Dynamical Systems · Mathematics 2021-12-22 Alexander Blokh , Lex Oversteegen , Anastasia Shepelevtseva , Vladlen Timorin

We introduce a new method to study rational conjugacy of torsion units in integral group rings using integral and modular representation theory. Employing this new method, we verify the first Zassenhaus Conjecture for the group…

Representation Theory · Mathematics 2020-04-10 Andreas Bächle , Leo Margolis

In this paper we present an equivalent statement to the Jacobian conjecture. For a polynomial map F on an affine space of dimension n, we define recursively n finite sequences of polynomials. We give an equivalent condition to the…

Commutative Algebra · Mathematics 2016-01-05 Elzbieta Adamus , Pawel Bogdan , Teresa Crespo , Zbigniew Hajto

We show that an exponential map $f_c(z)=e^z+c$ whose singular value $c$ is combinatorially non-recurrent and non-escaping is uniquely determined by its combinatorics, i.e. the pattern in which its dynamic rays land together. We do this by…

Dynamical Systems · Mathematics 2014-08-08 Anna Miriam Benini

We present a non-standard proof of the fact that the existence of a local (i.e. restricted to a point) characteristic-zero, semi-parametric lifting for a variety defined by the zero locus of polynomial equations over the integers is…

Commutative Algebra · Mathematics 2017-07-26 Edisson Gallego , Danny A. J. Gomez-Ramirez , Juan D. Velez

For the family of quadratic rational functions having a $2$-cycle of bounded type Siegel disks, we prove that each of the boundaries of these Siegel disks contains at most one critical point. In the parameter plane, we prove that the locus…

Dynamical Systems · Mathematics 2022-06-30 Yuming Fu , Fei Yang , Gaofei Zhang

We continue a study of separable equivalence from Hokkaido Mathematical Journal 24 (1995), 527-549. We prove that symmetric separable equivalent rings $A$ and $B$ are linked by a Frobenius bimodule ${}_AP_B$ such that $A$ is $P$-separable…

Rings and Algebras · Mathematics 2019-02-13 Lars Kadison

We introduce and study transposed Poisson conformal superalgebras, the $\mathbb Z_2$-graded conformal analogues of transposed Poisson algebras, as well as their noncommutative variants. We derive a family of identities forced by the…

Rings and Algebras · Mathematics 2026-05-19 Hao Fang , Lamei Yuan

We continue studying polynomials generated by the Szeg\H{o} recursion when a finite number of Verblunsky coefficients lie outside the closed unit disk. We prove some asymptotic results for the corresponding orthogonal polynomials and then…

Classical Analysis and ODEs · Mathematics 2017-06-29 Maxim Derevyagin , Brian Simanek

A superpotential algebra is square if its quiver admits an embedding into a two-torus such that the image of its underlying graph is a square grid, possibly with diagonal edges in the unit squares; examples are provided by dimer models in…

Algebraic Geometry · Mathematics 2014-12-05 Charlie Beil

Let $\mathbb{K}$ be an algebraically closed field of characteristic 0. A finite dimensional Lie algebra $\mathfrak{g}$ over $\mathbb{K}$ is said to be stable if there exists a linear form $g\in\mathfrak{g}^{*}$ and a Zariski open subset in…

Representation Theory · Mathematics 2013-05-08 Kais Ammari

A computation shows that there are 77 (up to scalar shifts) possible pairs of integer coefficient polynomials of degree five, having roots of unity as their roots, and satisfying the conditions of Beukers and Heckman [1], so that the…

Group Theory · Mathematics 2018-11-27 Jitendra Bajpai , Sandip Singh