{ "id": "1802.01374", "version": "v1", "published": "2018-02-05T13:02:33.000Z", "updated": "2018-02-05T13:02:33.000Z", "title": "Congruences for the Coefficients of the Powers of the Euler Product", "authors": [ "Julia Q. D. Du", "Edward Y. S. Liu", "Jack C. D. Zhao" ], "categories": [ "math.CO", "math.NT" ], "abstract": "Let $p_k(n)$ be given by the $k$-th power of the Euler Product $\\prod _{n=1}^{\\infty}(1-q^n)^k=\\sum_{n=0}^{\\infty}p_k(n)q^{n}$. By investigating the properties of the modular equations of the second and the third order under the Atkin $U$-operator, we determine the generating functions of $p_{8k}(2^{2\\alpha} n +\\frac{k(2^{2\\alpha}-1)}{3})$ $(1\\leq k\\leq 3)$ and $p_{3k} (3^{2\\beta}n+\\frac{k(3^{2\\beta}-1)}{8})$ $(1\\leq k\\leq 8)$ in terms of some linear recurring sequences. Combining with a result of Engstrom about the periodicity of linear recurring sequences modulo $m$, we obtain infinite families of congruences for $p_k(n)$ modulo any $m\\geq2$, where $1\\leq k\\leq 24$ and $3|k$ or $8|k$. Based on these congruences for $p_k(n)$, infinite families of congruences for many partition functions such as the overpartition function, $t$-core partition functions and $\\ell$-regular partition functions are easily obtained.", "revisions": [ { "version": "v1", "updated": "2018-02-05T13:02:33.000Z" } ], "analyses": { "keywords": [ "euler product", "congruences", "coefficients", "infinite families", "regular partition functions" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }