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Theta functions in complex analysis and number theory. (English) Zbl 1206.11055

Alladi, Krishnaswami (ed.), Surveys in number theory. New York, NY: Springer (ISBN 978-0-387-78509-7/hbk). Developments in Mathematics 17, 57-87 (2008).
Summary: In these notes we try to demonstrate the utility of the theory of theta functions in combinatorial number theory and complex analysis. The main idea is to use identities among theta functions to deduce either useful number-theoretic information related to representations as sums of squares and triangular numbers, statements concerning congruences, or statements concerning partitions of sets of integers. In complex analysis the main utility is in the theory of compact Riemann surfaces, with which we do not deal. We do show how identities among theta functions yield proofs of Picard’s theorem and a conformal map of the rectangle onto the disk.
For the entire collection see [Zbl 1147.11004].

MSC:

11F27 Theta series; Weil representation; theta correspondences
11B65 Binomial coefficients; factorials; \(q\)-identities
30C20 Conformal mappings of special domains
33E05 Elliptic functions and integrals
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References:

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