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Let $G$ be a finite non abelian group. The centralizer graph of $G$ is a simple undirected graph $\Gamma_{cent}(G)$, whose vertex set consists of proper centralizers of $G$ and two vertices are adjacent if and only if their cardinalities…

Combinatorics · Mathematics 2022-08-03 Jharna Kalita , Somnath Paul

In this article we study and obtain a classification of Ising vectors in vertex operator algebras associated to binary codes and $\sqrt{2}$ times root lattices, where an Ising vector is a conformal vector with central charge 1/2 generating…

Quantum Algebra · Mathematics 2007-05-23 Ching Hung Lam , Shinya Sakuma , Hiroshi Yamauchi

We prove that a vector field on an affine $C^\infty$-scheme Spec(A) has a flow if the $C^\infty$-ring A is finitely generated. If the vector field is complete then the flow is the target map of a groupoid internal to the category of…

Differential Geometry · Mathematics 2025-09-10 Eugene Lerman

The main goal of this paper is the analytic classification of the germs of singular foliations generated, up to an analytic change of coordinates, by the germs of vector fields of form the…

Dynamical Systems · Mathematics 2024-10-02 Francisco Chaves

We characterize model polynomials that are cyclic in Dirichlet-type spaces in the unit ball of $\mathbb{C}^n$, and we give a sufficient capacity condition in order to identify non-cyclic vectors.

Complex Variables · Mathematics 2023-01-16 Dimitrios Vavitsas

Let u be a word over the positive integers. Motivated in part by a question from representation theory, we study the centralizer set of u which is C(u) = {w | uw is Knuth-equivalent to wu}. In particular, we give various necessary…

Combinatorics · Mathematics 2024-10-29 Bruce E. Sagan , Alexander N. Wilson

We study two families of integer vectors playing a crucial part in the structural theory of cluster algebras: the $\gg$-vectors parameterizing cluster variables, and the $\cc$-vectors parameterizing the coefficients. We prove two identities…

Rings and Algebras · Mathematics 2012-03-15 Tomoki Nakanishi , Andrei Zelevinsky

Commuting maps on a class of algebras called inflated algebras are investigated. In particular, we can prove that every commuting map $\theta$ on such an algebra is of the form $\theta(x)=c x+\mu(x)$, where $c$ belongs to the base field $K$…

Rings and Algebras · Mathematics 2026-05-14 Hongyu Jia , Zhankui Xiao

We use the notion of isomorphism between two invariant vector fields to shed new light on the issue of linearization of an invariant vector field near a relative equilibrium. We argue that the notion is useful in understanding the passage…

Dynamical Systems · Mathematics 2014-09-10 Eugene Lerman

It is known that that the centralizer of a matrix over a finite field depends, up to conjugacy, only on the type of the matrix, in the sense defined by J. A. Green. In this paper an analogue of the type invariant is defined that in general…

Group Theory · Mathematics 2013-10-22 John R. Britnell , Mark Wildon

We establish the equivalence of the Maxwell-Chern-Simons-Proca model to a doublet of Maxwell-Chern-Simons models at the level of polarization vectors of the basic fields using both Lagrangian and Hamiltonian formalisms. The analysis reveals…

High Energy Physics - Theory · Physics 2009-10-31 Rabin Banerjee , Biswajit Chakraborty , Tomy Scaria

In this work, under a mild assumption, we give the classification of the complete polynomial vector fields in two variables up to algebraic automorphisms of $\C^2$. The general problem is also reduced to the study of the combinatorics of…

Dynamical Systems · Mathematics 2007-05-23 Julio C. Rebelo

We study holomorphic vector fields on isolated hypersurface singularities and derive global obstructions to the existence of holomorphic vector fields on compact singular varieties. For a hypersurface germ $(V,0)$ with an isolated…

Algebraic Geometry · Mathematics 2026-05-12 Diogo da Silva Machado , Jose Seade

In this paper we introduce geometric tools to study the families of rational vector fields of a given degree over $\mathbb C\mathbb P^1$. To a generic vector field of such a parametric family we associate several geometric objects: a…

Dynamical Systems · Mathematics 2019-09-23 Martin Klimeš , Christiane Rousseau

In this note, we show that (the germ of) each Euler-like vector field comes from a tubular neighborhood embedding given by the normal exponential map of some Riemannian metric.

Differential Geometry · Mathematics 2025-04-17 Haoyuan Gao

We prove necessary and sufficient conditions for completeness of a rational vector field on C^n minus n hyperplanes in general position (n>1).

Complex Variables · Mathematics 2007-05-23 Erik Andersen

We define generalized vector fields, and contraction and Lie derivatives with respect to them. Generalized commutators are also defined.

Mathematical Physics · Physics 2007-05-23 Saikat Chatterjee , Amitabha Lahiri

We give unique analytic "normal forms" for germs of a holomorphic vector field of the complex plane in the neighborhood of an isolated singularity of saddle-node type having a convergent formal separatrix. We specifically address the…

Dynamical Systems · Mathematics 2013-07-29 Reinhard Schäfke , Loïc Jean Dit Teyssier

We show that for a pointed protomodular category $\mathbb{C}$ satisfying a certain condition on those Huq commutators which exist, if $X$ is a perfect object in $\mathbb{C}$ such that the split extension classifier $[X]$ exists, then the…

Category Theory · Mathematics 2022-08-03 James R. A. Gray

We study the algebra of invariant differential operators on a certain homogeneous vector bundle over a Riemannian symmetric space of type $A_2$. We computed radial parts of its generators explicitly to obtain matrix-valued commuting…

Representation Theory · Mathematics 2017-09-22 Nobukazu Shimeno