Finiteness of irreducible holomorphic eta quotients of a given level

Bhattacharya, Soumya

doi:10.1007/s11139-017-9982-6

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Finiteness of irreducible holomorphic eta quotients of a given level

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Bhattacharya, Soumya
Max Planck Institute for Mathematics, Max Planck Society;

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https://doi.org/10.1007/s11139-017-9982-6
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Bhattacharya, S. (2019). Finiteness of irreducible holomorphic eta quotients of a given level. The Ramanujan Journal, 48(2), 423-443. doi:10.1007/s11139-017-9982-6.

Cite as: https://hdl.handle.net/21.11116/0000-0004-42F6-C

Abstract

We show that for any positive integer N, there are only finitely many holomorphic eta quotients of level N, none of which is a product of two holomorphic eta quotients other than 1 and itself. This result is an analog of Zagier’s conjecture/Mersmann’s theorem which states that of any given weight, there are only finitely
many irreducible holomorphic eta quotients, none of which is an integral rescaling of another eta quotient. We construct such eta quotients for all cubefree levels. In particular, our construction demonstrates the existence of irreducible holomorphic eta quotients of arbitrarily large weights.