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dc.contributor.authorJuyal A.
dc.contributor.authorMaji B.
dc.contributor.authorSathyanarayana S.
dc.date.accessioned2021-05-05T10:31:21Z-
dc.date.available2021-05-05T10:31:21Z-
dc.date.issued2021
dc.identifier.citationRamanujan Journal , Vol. , , p. -en_US
dc.identifier.urihttps://doi.org/10.1007/s11139-020-00375-7
dc.identifier.urihttp://idr.nitk.ac.in/jspui/handle/123456789/16703-
dc.description.abstractIn 1981, Zagier conjectured that the constant term of the automorphic form y12| Δ (z) | 2, that is, a0(y):=y12∑n=1∞τ2(n)exp(-4πny), where τ(n) is the nth Fourier coefficient of the Ramanujan cusp form Δ (z) , has an asymptotic expansion when y→ 0 + and it can be expressed in terms of the non-trivial zeros of the Riemann zeta function ζ(s). This conjecture was settled by Hafner and Stopple, and later Chakraborty, Kanemitsu, and the second author have extended this result for any Hecke eigenform over the full modular group. In this paper, we investigate a Lambert series associated to the Fourier coefficients of a cusp form and the Möbius function μ(n). We present an exact formula for the Lambert series and interestingly the main term is in terms of the non-trivial zeros of ζ(s) , and the error term is expressed as an infinite series involving the generalized hypergeometric series 2F1(a, b; c; z). As an application of this exact form, we also establish an asymptotic expansion of the Lambert series. © 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC part of Springer Nature.en_US
dc.titleAn exact formula for a Lambert series associated to a cusp form and the Möbius functionen_US
dc.typeArticleen_US
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