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We describe a general framework of functional and Fourier analysis on domains with a free action of an Abelian Lie group $G$. Namely, on a domain of the form $G\times Y$ we introduce the appropriate spaces of distributions and measurable…

Functional Analysis · Mathematics 2024-12-30 Zhirayr Avetisyan , Alexey Karapetyants

We extend Latimer and MacDuffee's theorem to a general commutative domain and apply this result to study similarity of matrices over integral rings of number fields. We also conjecture similarity over discrete valuation rings can be descent…

Number Theory · Mathematics 2025-12-09 Ziyang Zhu

There is a commutative algebra of differential-difference operators, acting on polynomials on R_2, associated with the reflection group B2. This paper presents an integral transform which intertwines this algebra, allowing one free…

Classical Analysis and ODEs · Mathematics 2011-11-09 Charles F. Dunkl

We formulate and prove a general recurrence relation that applies to integrals involving orthogonal polynomials and similar functions. A special case are connection coefficients between two sets of orthonormal polynomials, another example…

Classical Analysis and ODEs · Mathematics 2023-08-17 Jing Gao , Arieh Iserles

We classify all the \emph{$\Delta$-}coherent pairs of measures of the second kind on the real line. We obtain $5$ cases, corresponding to all the families of discrete semiclassical orthogonal polynomials of class $s\leq1.$

Classical Analysis and ODEs · Mathematics 2023-02-06 Diego Dominici , Francisco Marcellán

Given two quasi-definite moment functionals, the corresponding orthogonal polynomial systems satisfy an algebraic differential relation(called an extended coherent pair). We study generalizing extended coherent pairs that unify extended…

Classical Analysis and ODEs · Mathematics 2023-02-28 Jong Hwan Lee , Sung Jun An , Hwan Yong Lee

In this paper, we explore the concept of multilinear operators that are multiple almost summing and present a new concept of type and cotype of multilinear operators and investigate the conditions for this new concept to recover the…

Functional Analysis · Mathematics 2021-09-23 Joilson Ribeiro , Fabrício Santos

In this paper, certain linear operators defined on $p$-valent analytic functions have been unified and for them some subordination and superordination results as well as the corresponding sandwich type results are obtained. A related…

Complex Variables · Mathematics 2011-08-23 S. Sivaprasad Kumar , Virendra Kumar , V. Ravichandran

The study of images of noncommutative polynomials on algebras has attracted considerable attention. We investigate polynomial images and the additive structures they generate in associative algebras, focusing on sums and products of values.…

Rings and Algebras · Mathematics 2026-05-07 Tsiu-Kwen Lee , Tran Nam Son

The notion of monogenic (or regular) functions, which is a correspondence of holomorphic functions, has been studied extensively in hypercomplex analysis, including quaternionic, octonionic, and Clifford analysis. Recently, the concept of…

Complex Variables · Mathematics 2026-05-19 Zhenghua Xu , Chao Ding , Haiyan Wang

In this paper we introduce a new approach to the concept of multipolynomials and generalize several results of the homogeneous polynomials and symmetric multilinear applications. We also present an abstract approach to the concept of…

Functional Analysis · Mathematics 2018-11-19 Joilson Ribeiro , Fabrício Santos

Suppose a finite dimensional semisimple Lie algebra $\mathfrak g$ acts by derivations on a finite dimensional associative or Lie algebra $A$ over a field of characteristic $0$. We prove the $\mathfrak g$-invariant analogs of Wedderburn -…

Rings and Algebras · Mathematics 2014-09-02 A. S. Gordienko , M. V. Kochetov

The dual Kontsevich cycles in the double dual of associative graph homology correspond to polynomials in the Miller-Morita-Mumford classes in the integral cohomology of mapping class groups. I explain how the coefficients of these…

Algebraic Topology · Mathematics 2007-05-23 Kiyoshi Igusa

Higher genus partition functions of two-dimensional conformal field theories have to be invariants under linear actions of mapping class groups. We illustrate recent results [4,6] on the construction of such invariants by concrete…

High Energy Physics - Theory · Physics 2013-02-20 Jens Fjelstad , Jurgen Fuchs , Christoph Schweigert , Carl Stigner

One-parameter semigroups of antitriangle idempotent supermatrices and corresponding superoperator semigroups are introduced and investigated. It is shown that $t$-linear idempotent superoperators and exponential superoperators are mutually…

Functional Analysis · Mathematics 2007-05-23 Steven Duplij

In Part 1 we study the spherical functions on compact symmetric pairs of arbitrary rank under a suitable multiplicity freeness assumption and additional conditions on the branching rules. The spherical functions are taking values in the…

Representation Theory · Mathematics 2017-06-08 Erik Koelink , Maarten van Pruijssen , Pablo Román

We give a new proof that bounded non-commutative functions on polynomial polyhedra can be represented by a realization formula, a generalization of the transfer function realization formula for bounded analytic functions on the unit disk.

Functional Analysis · Mathematics 2019-08-15 Jim Agler , John E. McCarthy

A method for computing integrals of polynomial functions on compact symmetric spaces is given. Those integrals are expressed as sums of functions on symmetric groups.

Probability · Mathematics 2013-07-04 Sho Matsumoto

We study the connections existing between max-infinitely divisible distributions and Poisson processes from the point of view of functional analysis. More precisely, we derive functional identities for the former by using well-known results…

Functional Analysis · Mathematics 2025-09-03 Bruno Costacèque-Cecchi , Laurent Decreusefond

All squigonometric functions admit derivatives that can be expressed as polynomials of the squine and cosquine. We introduce a general framework that allows us to determine these polynomials recursively. We also provide an explicit formula…

Classical Analysis and ODEs · Mathematics 2025-03-26 Bart S. van Lith