Results 41 to 50 of about 2,832 (120)

First Hitting Time of the Boundary of the Weyl Chamber by Radial Dunkl Processes [PDF]

open access: yes, 2008
We provide two equivalent approaches for computing the tail distribution of the first hitting time of the boundary of the Weyl chamber by a radial Dunkl process. The first approach is based on a spectral problem with initial value.
Demni, Nizar
core   +5 more sources

The Dunkl-Coulomb problem in the plane [PDF]

open access: yes, 2014
The Dunkl-Coulomb system in the plane is considered. The model is defined in terms of the Dunkl Laplacian, which involves reflection operators, with a $r^{-1}$ potential. The system is shown to be maximally superintegrable and exactly solvable.
Genest, Vincent X.   +2 more
core  

Sharp estimates for potential operators associated with Laguerre and Dunkl-Laguerre expansions

open access: yes, 2014
We study potential operators associated with Laguerre function expansions of convolution and Hermite types, and with Dunkl-Laguerre expansions. We prove qualitatively sharp estimates of the corresponding potential kernels.
Nowak, Adam, Stempak, Krzysztof
core   +1 more source

Dunkl Operators: Theory and Applications [PDF]

open access: yes, 2003
These lecture notes are intended as an introduction to the theory of rational Dunkl operators and the associated special functions, with an emphasis on positivity and asymptotics. We start with an outline of the general concepts: Dunkl operators, the intertwining operator, the Dunkl kernel and the Dunkl transform.
openaire   +2 more sources

Approximation on a class of Phillips operators generated by q-analogue

open access: yesJournal of Inequalities and Applications, 2020
The main purpose of this article is to introduce a new generalization of q-Phillips operators generated by Dunkl exponential function. We establish some approximation results for these operators. We also determine the order of approximation, and the rate
Abdullah Alotaibi
doaj   +1 more source

On elliptic Dunkl operators

open access: yesMichigan Mathematical Journal, 2008
We attach elliptic Dunkl operators to an abelian variety with a finite group action. This generalizes elliptic Dunkl operators for Weyl groups, defined by Buchstaber, Felder, and Veselov in 1994. We show that these operators commute, and use them to define representations from category O of elliptic Cherednik algebras.
Etingof, Pavel, Ma, Xiaoguang
openaire   +3 more sources

Generalized Hermite Polynomials and the Heat Equation for Dunkl Operators

open access: yes, 1997
Based on the theory of Dunkl operators, this paper presents a general concept of multivariable Hermite polynomials and Hermite functions which are associated with finite reflection groups on $\b R^N$.
Rösler, Margit
core   +2 more sources

The tetrahexahedric angular Calogero model [PDF]

open access: yes, 2015
The spherical reduction of the rational Calogero model (of type $A_{n-1}$ and after removing the center of mass) is considered as a maximally superintegrable quantum system, which describes a particle on the $(n{-}2)$-sphere subject to a very particular ...
Correa, Francisco, Lechtenfeld, Olaf
core   +3 more sources

Markov Processes Related with Dunkl Operators

open access: yesAdvances in Applied Mathematics, 1998
Dunkl operators are differential-difference operators associated with a finite reflection group, acting on some Euclidean space, and they can be regarded as a generalization of partial derivatives and play a major role in the theory of quantum many-body systems.
Rösler, Margit, Voit, Michael
openaire   +2 more sources

The Hahn superalgebra and supersymmetric Dunkl oscillator models

open access: yes, 2013
A supersymmetric extension of the Hahn algebra is introduced. This quadratic superalgebra, which we call the Hahn superalgebra, is constructed using the realization provided by the Dunkl oscillator model in the plane, whose Hamiltonian involves ...
Genest, Vincent X.   +3 more
core   +1 more source

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