OLSHANSKI SPHERICAL FUNCTIONS FOR INFINITE DIMENSIONAL MOTION GROUPS OF FIXED RANK
OLSHANSKI SPHERICAL FUNCTIONS FOR INFINITE DIMENSIONAL MOTION GROUPS OF FIXED RANK
复制标题
定阶无限维运动群的OLSHANSKI球函数
DOI:
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
M. Voit
中科院分区:
文献类型:
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作者:
M. Rosler;M. Voit
Consider the Gelfand pairs (Gp,Kp) := (Mp,q ⋊ Up,Up) associ- ated with motion groups over the fields F = R,C,H with pq and fixed q as well as the inductive limit p ! 1, the Olshanski spherical pair (G1,K1). We classify all Olshanski spherical functions of (G1,K1) as functions on the coneq of positive semidefinite q × q-matrices and show that they appear as (locally) uniform limits of spherical functions of (Gp,Kp) as p ! 1. The latter are given by Bessel functions onq. Moreover, we determine all posi- tive definite Olshanski spherical functions and discuss related positive integral representations for matrix Bessel functions. We also extend the results to the pairs (Mp,q ⋊ (Up × Uq),(Up × Uq)) which are related to the Cartan motion groups of non-compact Grassmannians. Here Dunkl-Bessel functions of type B (for finite p) and of type A (for p ! 1) appear as spherical functions.
影响因子:
2.4
作者:
B. Schweizer
通讯作者:
B. Schweizer