We introduce and describe one-dimensional cyclotomic Gauss-Selberg
sums generalizing the classical Gaussian sums. They correspond to
irreducible self-dual unitary spherical representations of the
one-dimensional double affine Hecke algebra.
References
R. Askey and M. E. H. Ismail, ``A generalization of ultraspherical polynomials'' in Studies in Pure Mathematics, ed. P. Erdös, Birkhäuser, Basel, 1983, 55--78. MR 87a:33015
Mathematical Reviews (MathSciNet):
MR820210
R. Askey and J. Wilson, Some basic hypergeometric orthogonal polynomials that generalize Jacobi polynomials, Mem. Amer. Math. Soc. 54 (1985), no. 319. MR 87a:05023
Mathematical Reviews (MathSciNet):
MR783216
K. Chandrasekharan, Elliptic Functions, Grundlehren Math. Wiss. 281, Springer, Berlin, 1985. MR 87e:11058
Mathematical Reviews (MathSciNet):
MR808396
I. Cherednik, Nonsymmetric Macdonald polynomials, Internat. Math. Res. Notices 1995, 483--515. MR 97f:33032
--. --. --. --., Difference Macdonald-Mehta conjecture, Internat. Math. Res. Notices 1997, 449--467. MR 99g:33046
--. --. --. --., ``From double Hecke algebra to analysis'' in Proceedings of the International Congress of Mathematicians, II (Berlin, 1998), Doc. Math. 1998, 527--531., http://www.mathematick.uni-bielefeld.de/documenta MR 2000b:33013
--------, On $q$-analogues of Riemann's zeta, preprint 1998.
--------, Double Hecke algebras and Gauss-Selberg sums, in preparation.
C. F. Dunkl, ``Hankel transforms associated to finite reflection groups'' in Hypergeometric Functions on Domains of Positivity, Jack Polynomials, and Applications (Tampa, 1991), Contemp. Math. 138, Amer. Math. Soc., Providence, 1992, 123--138. MR 94g:33011
R. J. Evans, The evaluation of Selberg character sums, Enseign. Math. (2) 37 (1991), 235--248. MR 93c:11062
G. J. Heckman, An elementary approach to the hypergeometric shift operators of Opdam, Invent. Math. 103 (1991), 341--350. MR 92i:33012
S. Helgason, Groups and Geometric Analysis: Integral Geometry, Invariant Differential Operators, and Spherical Functions, Pure Appl. Math. 113, Academic Press, Orlando, Fla., 1984. MR 86c:22017
Mathematical Reviews (MathSciNet):
MR754767
M. F. E. de Jeu, The Dunkl transform, Invent. Math. 113 (1993), 147--162. MR 94m:22011
V. G. Kac, Infinite-dimensional Lie Algebras, 3d ed., Cambridge Univ. Press, Cambridge, 1990. MR 92k:17038
D. Kazhdan and G. Lusztig, Tensor structures arising from affine Lie algebras, III, J. Amer. Math. Soc. 7 (1994), 335--381. MR 94g:17048
A. Kirillov, Jr., Inner product on conformal blocks and Macdonald's polynomials at roots of unity, preprint (1995).
E. Koelink and J. Stokman, The big $q$-Jacobi function transform, preprint, 1999, http://www-ma.u-strasbourg.fr/irma/publications
I. G. Macdonald, Affine Hecke algebras and orthogonal polynomials, Astérisque 237 (1996), 189--207., Séminaire Bourbaki 1994/95, exp. no. 797. MR 90f:33024
--------, A new class of symmetric functions, Sem. Lothar. Combin. 20 (1988), http://www.emis.de/journals/SLC/
E. M. Opdam, Some applications of hypergeometric shift operators, Invent. Math. 98 (1989), 1--18. MR 91h:33024
--. --. --. --., Dunkl operators, Bessel functions and the discriminant of a finite Coxeter group, Composito Math. 85 (1993), 333--373. MR 95j:33044
--. --. --. --., Harmonic analysis for certain representations of graded Hecke algebras, Acta Math. 175 (1995), 75--121. MR 98f:33025