{ "id": "1806.04424", "version": "v1", "published": "2018-06-12T10:01:16.000Z", "updated": "2018-06-12T10:01:16.000Z", "title": "Partition implications of a new three parameter $q$-series identity", "authors": [ "Atul Dixit", "Bibekananda Maji" ], "comment": "30 pages, submitted for publication", "categories": [ "math.CO" ], "abstract": "A generalization of a beautiful $q$-series identity found in the unorganized portion of Ramanujan's second and third notebooks is obtained. As a consequence, we derive a new three-parameter identity which is a rich source of partition-theoretic information. In particular, we use this identity to obtain a generalization of a recent result of Andrews, Garvan and Liang, which itself generalizes the famous result of Fokkink, Fokkink and Wang. This three-parameter identity also leads to several new weighted partition identities as well as a natural proof of a recent result of Garvan. This natural proof gives interesting number-theoretic information along the way. We also obtain a new result consisting of an infinite series involving a special case of Fine's function $F(a,b;t)$, namely, $F(0,q^n;cq^n)$. For $c=1$, this gives Andrews' famous identity for $\\mathrm{spt}(n)$ whereas for $c=-1, 0$ and $q$, it unravels new relations that the divisor function $d(n)$ has with other partition-theoretic functions such as the largest parts function $\\mathrm{lpt}(n)$.", "revisions": [ { "version": "v1", "updated": "2018-06-12T10:01:16.000Z" } ], "analyses": { "subjects": [ "11P81", "11P84", "05A17" ], "keywords": [ "series identity", "partition implications", "three-parameter identity", "natural proof", "largest parts function" ], "note": { "typesetting": "TeX", "pages": 30, "language": "en", "license": "arXiv", "status": "editable" } } }