Spherical transform and Jacobi polynomials on root systems of type BC
| dc.creator | Zhang, Genkai | |
| dc.date | 2005-03-31 | |
| dc.date | 2005-04-26 | |
| dc.date.accessioned | 2026-07-07T05:18:41Z | |
| dc.date.available | 2026-07-07T05:18:41Z | |
| dc.description | Let $R$ be a root system of type BC in $\mathfrak a=\mathbb R^r$ of general positive multiplicity. We introduce certain canonical weight function on $\mathbb R^r$ which in the case of symmetric domains corresponds to the integral kernel of the Berezin transform. We compute its spherical transform and prove certain Bernstein-Sato type formula. This generalizes earlier work of Unterberger-Upmeier, van Dijk-Pevsner, Neretin and the author. Associated to the weight functions there are Heckman-Opdam orthogonal polynomials of Jacobi type on the compact torus, after a change of variables they form an orthogonal system on the non-compact space $\mathfrak a$. We consider their spherical transform and prove that they are the Macdonald-Koornwinder polynomials multiplied by the spherical transform of the canonical weight function. For rank one case this was proved earlier by Koornwinder. | |
| dc.identifier | https://arxiv.org/abs/math/0503735 | |
| dc.identifier | http://arxiv.org/abs/math/0503735 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/74745 | |
| dc.subject | Representation Theory | |
| dc.subject | Classical Analysis and ODEs | |
| dc.title | Spherical transform and Jacobi polynomials on root systems of type BC | |
| dc.type | text |