Results 31 to 40 of about 2,417,266 (139)

Beurling’s Theorem for the Q-Fourier-Dunkl Transform

open access: yesKragujevac Journal of Mathematics, 2021
The Q-Fourier-Dunkl transform satisfies some uncertainty principles in a similar way to the Euclidean Fourier transform. By using the heat kernel associated to the Q-Fourier-Dunkl operator, we establish an analogue of Beurling’s theorem for the Q-Fourier-Dunkl transform ℱQ on ℝ.
Loualid, El Mehdi   +2 more
openaire   +2 more sources

Chemical Discrimination of Rutile From Different Metamorphic Source Rocks: Dealing With Hierarchical Data Structures in Random Forest Classification

open access: yesJournal of Metamorphic Geology, Volume 44, Issue 2, Page 112-137, February 2026.
ABSTRACT Rutile provides a wealth of petrochronological information in metamorphic geology and due to its high stability during processes of the sedimentary cycle, rutile takes a special position in sedimentary provenance analysis. Besides being one of the classical minerals datable using the U–Pb system, rutile incorporates a broad range of trace ...
Jan Schönig   +9 more
wiley   +1 more source

Approximation and Orthogonality on Fully Symmetric Domains

open access: yesStudies in Applied Mathematics, Volume 156, Issue 1, January 2026.
ABSTRACT We study orthogonal polynomials on a fully symmetric planar domain Ω$\Omega$ that is generated by a certain triangle in the first quadrant. For a family of weight functions on Ω$\Omega$, we show that orthogonal polynomials that are even in the second variable on Ω$\Omega$ can be identified with orthogonal polynomials on the unit disk composed ...
Yuan Xu
wiley   +1 more source

Further results for the Dunkl Transform and the generalized Ces\`aro operator [PDF]

open access: yes, 2012
In this paper, we consider Dunkl theory on R^d associated to a finite reflection group. This theory generalizes classical Fourier anal- ysis. First, we give for 1 < p
Abdelkefi, Chokri, Rached, Faten
core  

Riesz transforms for Dunkl Hermite expansions

open access: yesJournal of Mathematical Analysis and Applications, 2015
In the present paper, we establish that Riesz transforms for Dunkl Hermite expansion as introduced in [4] are singular integral operators with Hörmander's type conditions and we show that are bounded on $L^p(\mathbb{R}^d; dμ_k) 1 < p < 1.
openaire   +2 more sources

An uncertainty principle for the Dunkl transform [PDF]

open access: yesBulletin of the Australian Mathematical Society, 1999
This note presents an analogue of the classical Heisenberg-Weyl uncertainty principle for the Dunkl transform on ℝN. Its proof is based on expansions with respect to generalised Hermite functions.
openaire   +3 more sources

Poisson kernels of q$q$‐3D Hermite polynomials expansion for functions of several variables via generalized q$q$‐heat equations

open access: yesTransactions of the London Mathematical Society, Volume 12, Issue 1, December 2025.
Abstract The representation of an analytic function as a series involving q$q$‐polynomials is a fundamental problem in classical analysis and approximation theory [Ramanujan J. 19 (2009), no. 3, 281–303]. In this paper, our investigation is focusing on q$q$‐analog complex Hermite polynomials, which were motivated by Ismail and Zhang [Adv. Appl.
Jian Cao
wiley   +1 more source

On the Uniform Convergence of Partial Dunkl Integrals in Besov-Dunkl Spaces [PDF]

open access: yes, 2006
2000 Mathematics Subject Classification: 44A15, 44A35, 46E30In this paper we prove that the partial Dunkl integral ST(f) of f converges to f, as T → +∞ in L^∞(νµ) and we show that the Dunkl transform Fµ(f) of f is in L^1(νµ) when f belongs to a suitable ...
Abdelkefi, Chokri, Sifi, Mohamed
core  

Grenzflächen‐Photoelektrochemie in der Organischen Synthese

open access: yesAngewandte Chemie, Volume 137, Issue 42, October 13, 2025.
Heterogene Photoelektroden sind für die Aktivierung von H2O und CO2 weit verbreitet, während homogene Photoelektrochemie mit molekularen Katalysatoren die Aktivierung komplexer Moleküle in der Synthese dominiert. Dennoch bietet Grenzflächen‐Photoelektrochemie (iPEC) ein großes Potenzial für die Synthese, einschließlich Kosteneffizienz ...
Gabriel Chan   +4 more
wiley   +1 more source

The Dunkl-Laplace transform and Macdonald’s hypergeometric series

open access: yesTransactions of the American Mathematical Society, 2023
We continue a program generalizing classical results from the analysis on symmetric cones to the Dunkl setting for root systems of type A A
Brennecken, Dominik, Rösler, Margit
openaire   +3 more sources

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