{ "id": "2005.03619", "version": "v1", "published": "2020-05-07T17:18:21.000Z", "updated": "2020-05-07T17:18:21.000Z", "title": "On the partitions into distinct parts and odd parts", "authors": [ "Mircea Merca" ], "categories": [ "math.CO" ], "abstract": "In this paper, we show that the difference between the number of parts in the odd partitions of $n$ and the number of parts in the distinct partitions of $n$ satisfies Euler's recurrence relation for the partition function $p(n)$ when $n$ is odd. A decomposition of this difference in terms of the total number of parts in all the partitions of $n$ is also derived. In this context, we conjecture that for $k>0$, the series $$ (q^2;q^2)_\\infty \\sum_{n=k}^\\infty \\frac{q^{{k\\choose 2}+(k+1)n}}{(q;q)_n} \\begin{bmatrix} n-1\\\\k-1 \\end{bmatrix} $$ has non-negative coefficients.", "revisions": [ { "version": "v1", "updated": "2020-05-07T17:18:21.000Z" } ], "analyses": { "subjects": [ "11P81", "05A17" ], "keywords": [ "odd parts", "distinct parts", "satisfies eulers recurrence relation", "partition function", "distinct partitions" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }