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We present a partial generalization to Schubert calculus on flag varieties of the classical Littlewood-Richardson rule, in its version based on Schuetzenberger's jeu de taquin. More precisely, we describe certain structure constants…

Combinatorics · Mathematics 2009-01-28 Cristian Lenart

We introduce a family of Cauchy integral formulas for slice and slice regular functions on a real associative *-algebra. For each suitable choice of a real vector subspace of the algebra, a different formula is given, in which the domains…

Complex Variables · Mathematics 2018-07-02 Riccardo Ghiloni , Alessandro Perotti

Let $\widehat{\mathcal {S}}_g^{\alpha, \beta}(\mathbb{B}^n)$ be a subclass of normalized biholomorphic mappings defined on the unit ball in $\mathbb{C}^n,$ which is closely related to the starlike mappings. Firstly, we obtain the growth…

Complex Variables · Mathematics 2019-10-22 Zhenhan Tu , Liangpeng Xiong

Let $A$ be one of the following Clifford algebras : $\mathbb{R}_2 \cong \mathbb{H}$ or $\mathbb{R}_3$. For the algebra $A$, the automorphism group $Aut(A)$ and its invariants are well known. In this paper we will describe the invariants of…

Complex Variables · Mathematics 2025-01-28 Cinzia Bisi , Joerg Winkelmann

In this article we develop few of the analogous theoretical results of Clifford analysis over Orlicz-Sobolev spaces and study mapping properties of the Dirac operator and the Teodorescu transform over these function spaces. We also get…

Functional Analysis · Mathematics 2014-10-01 Dejenie Alemayehu Lakew , Mulugeta Alemayehu Dagnaw

This work looks at the theory of octonionic slice regular functions through the lens of differential topology. It proves a full-fledged version of the Open Mapping Theorem for octonionic slice regular functions. Moreover, it opens the path…

Complex Variables · Mathematics 2022-10-13 Riccardo Ghiloni , Alessandro Perotti , Caterina Stoppato

The aim of this paper is to extend the so called slice analysis to a general case in which the codomain is a real vector space of even dimension, i.e. is of the form $\mathbb{R}^{2n}$. We define a cone $\mathcal{W}_\mathcal{C}^d$ in…

Complex Variables · Mathematics 2024-01-05 Xinyuan Dou , Guangbin Ren , Irene Sabadini

We describe an explicit connection between solutions to equations $Df=0$ (the Generalized Cauchy-Riemann equation) and $(D+M)f=0$, where operators $D$ and $M$ commute. The described connection allows to construct a ``function theory'' (the…

funct-an · Mathematics 2016-08-31 Vladimir V. Kisil

In this paper, we consider the Cauchy problem of Dirac equations with Chern-Simons-Proca (CSP) gauge field. We investigate global well-posedness and scattering theory for the solutions with small initial data. The main difficulties come…

Analysis of PDEs · Mathematics 2023-05-12 Hyungjin Huh , Kiyeon Lee

A classical result in differential geometry due to Lichnerowicz [8] is concerned with the decomposition of the square of Dirac operators defined by Clifford connections on a Clifford module ${\cal E}$\ over a Riemannian manifold $M$.…

dg-ga · Mathematics 2008-02-03 Thomas Ackermann

This paper unifies the concept of kinematic mappings by using geometric algebras. We present a method for constructing kinematic mappings for certain Cayley-Klein geometries. These geometries are described in an algebraic setting by the…

Metric Geometry · Mathematics 2013-11-04 Daniel Klawitter , Markus Hagemann

There is a homomorphism of associative superalgebras from the enveloping algebra of the orthosymplectic Lie superalgebra $\mathfrak{osp}(1|2)$ to the Weyl-Clifford superalgebra $W(2n|n)$ with $2n$ even Weyl algebra generators and $n$ odd…

Representation Theory · Mathematics 2025-07-30 Matthew Dorang , Jonas T. Hartwig , Dwight Anderson Williams

We construct a counterexample to a well-known extension theorem for slice regular functions, which motivates us to develop a theory of Riemann slice-domains by introducing a new topology on quaternions. By some paths describing axial…

Complex Variables · Mathematics 2019-02-13 Xinyuan Dou , Guangbin Ren

Contemporary presentation of the version 1 demonstrates briefly the development of our investigations and our future goals. The improved free of difficulties in interpretation and printing errors version is presented. The 256-dimensional…

Mathematical Physics · Physics 2021-10-04 V. M. Simulik , I. Yu. Krivsky

Slice analysis is a generalization of the theory of holomorphic functions of one complex variable to quaternions. Among the new phenomena which appear in this context, there is the fact that the convergence domain of…

Complex Variables · Mathematics 2021-01-26 Xinyuan Dou , Guangbin Ren , Irene Sabadini

In this paper we prove that Dirac operators on non-compact complete orbifolds which are sufficiently regular at infinity, admit a unique extension. Additonally, we prove a generalized orbifold Stokes'/Divergence theorem.

Differential Geometry · Mathematics 2008-09-22 Carla Farsi

We obtain a vanishing theorem for the kernel of a Dirac operator on a Clifford module twisted by a sufficiently large power of a line bundle, whose curvature is non-degenerate at any point of the base manifold. In particular, if the base…

Differential Geometry · Mathematics 2007-05-23 Maxim Braverman

We construct new relativistic linear differential equation in $d$ dimensions generalizing Dirac equation by employing the Clifford algebra of the cubic polynomial associated to Klein-Gordon operator multiplied by the mass parameter. Unlike…

High Energy Physics - Theory · Physics 2009-10-31 Mikhail S. Plyushchay , Michel Rausch de Traubenberg

We prove a Slice Theorem around closed leaves in a singular Riemannian foliation, and we use it to study the $C^\infty$-algebra of smooth basic functions, generalizing to the inhomogeneous setting a number of results by G.~Schwarz. In…

Differential Geometry · Mathematics 2018-02-16 Ricardo Mendes , Marco Radeschi

Along the lines of the classic Hodge-De Rham theory a general decomposition theorem for sections of a Dirac bundle over a compact Riemannian manifold is proved by extending concepts as exterior derivative and coderivative as well as as…

Differential Geometry · Mathematics 2020-08-13 Simone Farinelli