Parity of the Coefficients of Certain Eta-Quotients, III: Two Special Classes

Document Type

Article

Publication Date

6-11-2026

Department

Department of Mathematical Sciences

Abstract

We continue a series of papers studying the parity of families of eta-quotients, which provide implications for the parity of the partition function as well as an overarching conjecture on related q-series. The present article focuses on two classes. One consists of eta-quotients of the form f 3 t /f1, a distinguished case of Andrews’ singular overpartitions that has recently attracted attention among researchers. In addition, we investigate the parity of certain pure eta-powers ft 1, appending new results to known density theorems.

Publication Title

Annals of Combinatorics

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