Results 21 to 30 of about 1,609 (94)

Reorganization of continent‐scale sediment routing based on detrital zircon and rutile multi‐proxy analysis

open access: yesBasin Research, Volume 35, Issue 1, Page 363-386, February 2023., 2023
Integration of U‐Pb, Hf isotope and trace element analyses of detrital zircon and rutile decipher provenance. Potential source areas of broadly coeval formation are discriminated by multi‐proxy analysis. Integrated analysis of the detrital record after major geodynamic changes captures sedimentary reorganization.
Maximilian Dröllner   +2 more
wiley   +1 more source

Turán Type Inequalities for Dunkl Kernel and $q$-Dunkl Kernel

open access: yes, 2015
11 ...
Mehrez, Khaled   +2 more
openaire   +2 more sources

Multitechnique Geochronology of Intrusive and Explosive Activity on Piton des Neiges Volcano, Réunion Island

open access: yesGeochemistry, Geophysics, Geosystems, Volume 23, Issue 5, May 2022., 2022
Abstract The construction of ocean island basaltic volcanoes consists of a succession of eruptions, intrusions, and metamorphism. These events are often temporally ill‐constrained because the most widely used radiometric dating methods applicable to mafic volcanic rocks (K‐Ar or 40Ar/39Ar on whole rock or groundmass) are prone to inaccuracy when ...
Vincent Famin   +9 more
wiley   +1 more source

Sharp estimates for W-invariant Dunkl and heat kernels in the A case

open access: yesBulletin des Sciences Mathématiques, 2023
In this article, we prove exact estimates for the $W$-invariant Dunkl kernel and heat kernel, for the root system of type $A$ with arbitrary positive multiplicities. We apply the estimates of the $W$-invariant Dunkl heat kernel to compute sharp estimates for the Newton kernel and for the $s$-stable semigroups generated by a fractional power of the $W ...
Piotr Graczyk, Patrice Sawyer
openaire   +2 more sources

Upper and lower bounds for Dunkl heat kernel

open access: yes, 2021
On $\mathbb R^N$ equipped with a normalized root system $R$, a multiplicity function $k(α) > 0$, and the associated measure $$ dw(\mathbf x)=\prod_{α\in R}|\langle \mathbf x,α\rangle|^{k(α)}\, d\mathbf x, $$ let $h_t(\mathbf x,\mathbf y)$ denote the heat kernel of the semigroup generated by the Dunkl Laplace operator $Δ_k$.
Dziubański, Jacek, Hejna, Agnieszka
openaire   +2 more sources

On the estimates of the Dunkl Kernel

open access: yes, 2018
In this paper, we are interested in the estimates of the Dunkl Kernel on some special sets, following the work of M.F.E. de Jeu and M. Rösler in \cite{R3}.
Amri, Béchir, Gasmi, Abdessalem
openaire   +2 more sources

Generalized Bessel function of Type D [PDF]

open access: yes, 2008
We write down the generalized Bessel function associated with the root system of type $D$ by means of multivariate hypergeometric series. Our hint comes from the particular case of the Brownian motion in the Weyl chamber of type $D$.Comment: This is a ...
Demni, Nizar
core   +6 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

Riesz transforms for Dunkl transform [PDF]

open access: yes, 2011
In this paper we obtain the $L^p$-boundedness of Riesz transforms for Dunkl transform for all ...
Amri, Béchir, Sifi, Mohamed
core   +2 more sources

Boundedness of the pseudo-differential operators generated by 1D-Dunkl operator

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы
This article is devoted to the study of pseudo-differential operators generated by Dunkl operators, focusing primarily on their boundedness properties.
B. Bekbolat, N. Tokmagambetov
doaj   +1 more source

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