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Exponential sums connected with Ramanujan's function τ(n)

Published online by Cambridge University Press:  26 February 2010

L. A. Parson
Affiliation:
Department of Mathematics, The Ohio State University, Columbus, Ohio 43210, U.S.A.
Mark Sheingorn
Affiliation:
The Institute for Advanced Study, Princeton, New Jersey 08540, U.S.A.
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Extract

This paper contains estimates of several exponential sums involving Fourier coefficients of certain modular forms. Although the questions which we consider date back, in some cases, to the twenties, our motivation is modern. All of these sums are connected with one approach to the problem of calculating the norm of the Poincaré 0-operator. In this section we state our results (and their antecedents) and then describe their relevance to the θ-operator problem. For simplicity we state and prove all our results for the modular cusp form of weight six, the famous discriminant function

Type
Research Article
Copyright
Copyright © University College London 1982

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References

1.Deligne, P.. La conjecture de Weil. Inst. Hautes Études Sci. Publ. Math., 43 (1974), 273307.Google Scholar
2.Kra, I.. Automorphic Forms and Kleinian Groups (Benjamin, Reading, MA, 1972).Google Scholar
3.Parson, L. A. and Sheingorn, M.. Bounding the norm of the Poincare λ-operator. Knopp, M. I., Ed., Analytic Number Theory, Lecture Notes in Mathematics, No. 899 (Springer-Verlag, New York, NY, 1981).Google Scholar
4.Rankin, R. A.. Ramanujan's function δ(n). Symposia on Theoretical Physics and Mathematics, Vol. 10 (Inst. Math. Sci., Madras), 1969 (Plenum, New York, 1970), 3745.Google Scholar
5.Walfisz, A.. öber die Koeffizientensummen einiger Modulformen. Math. Ann., 108 (1933), 7590.CrossRefGoogle Scholar
6.Wilton, J.. A note on Ramanujan's arithmetical function τ(n). Proc. Camb. Phil Soc, 25 (1929), 121129.CrossRefGoogle Scholar