A New Proof of a Watson's Formula
Canadian mathematical bulletin, Tome 31 (1988) no. 4, pp. 414-418

Voir la notice de l'article provenant de la source Cambridge University Press

A new proof of a product formula for Laguerre polynomials, due originally to Watson, is given. Considering the commutative Banach algebra of radial functions on the Heisenberg groups Hn, n ≧ 2, we observe that Watson's formula holds for z = 1,2, 3, .... Then, applying a complex function theory argument, we establish the validity of this formula for other complex values of z, i.e. for Re z > - 1/2.
DOI : 10.4153/CMB-1988-060-8
Mots-clés : Laguerre polynomials, Heisenberg groups, 33A65, 33A75, 43A80
Stempak, Krzysztof. A New Proof of a Watson's Formula. Canadian mathematical bulletin, Tome 31 (1988) no. 4, pp. 414-418. doi: 10.4153/CMB-1988-060-8
@article{10_4153_CMB_1988_060_8,
     author = {Stempak, Krzysztof},
     title = {A {New} {Proof} of a {Watson's} {Formula}},
     journal = {Canadian mathematical bulletin},
     pages = {414--418},
     year = {1988},
     volume = {31},
     number = {4},
     doi = {10.4153/CMB-1988-060-8},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1988-060-8/}
}
TY  - JOUR
AU  - Stempak, Krzysztof
TI  - A New Proof of a Watson's Formula
JO  - Canadian mathematical bulletin
PY  - 1988
SP  - 414
EP  - 418
VL  - 31
IS  - 4
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1988-060-8/
DO  - 10.4153/CMB-1988-060-8
ID  - 10_4153_CMB_1988_060_8
ER  - 
%0 Journal Article
%A Stempak, Krzysztof
%T A New Proof of a Watson's Formula
%J Canadian mathematical bulletin
%D 1988
%P 414-418
%V 31
%N 4
%U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1988-060-8/
%R 10.4153/CMB-1988-060-8
%F 10_4153_CMB_1988_060_8

[1] 1. Hulanicki, A. and Ricci, F., A Tauberian theorem and tangential convergence for bounded harmonic functions on balls in Cn Inventiones math. 62 (1980), pp. 325–331. Google Scholar

[2] 2. Markett, C., A new proof of Watson's product formula for Laguerre polynomials via a Cauchy problem associated with a singular differential operator SIAM J. Math. Anal. 17 (1986), pp. 1010–1032. Google Scholar

[3] 3. Ricci, F., Harmonic analysis on groups of Type H (preprint). Google Scholar

[4] 4. Stempak, K., An algebra associated with the generalized sublaplacian Studia Math. 88 (1988), pp. 245–256. Google Scholar

[5] 5. Titchmarsh, E. C., The theory of functions Oxford Univ. Press, 1939. Google Scholar

[6] 6. Watson, G. N., Another note on Laguerre polynomials J. London Math. Soc. 14 (1939), pp. 19–22. Google Scholar

Cité par Sources :