{ "id": "1709.03398", "version": "v1", "published": "2017-09-11T14:22:10.000Z", "updated": "2017-09-11T14:22:10.000Z", "title": "More Infinite Products: Thue-Morse and the Gamma function", "authors": [ "Jean-Paul Allouche", "Samin Riasat", "Jeff Shallit" ], "categories": [ "math.NT" ], "abstract": "Letting $(t_n)$ denote the Thue-Morse sequence with values $0, 1$, we note that the Woods-Robbins product $$ \\prod_{n \\geq 0} \\left(\\frac{2n+1}{2n+2}\\right)^{(-1)^{t_n}} = 2^{-1/2} $$ involves a rational function in $n$ and the $\\pm 1$ Thue-Morse sequence $((-1)^{t_n})_{n \\geq 0}$. The purpose of this paper is twofold. On the one hand, we try to find other rational functions for which similar infinite products involving the $\\pm 1$ Thue-Morse sequence have an expression in terms of known constants. On the other hand, we also try to find (possibly different) rational functions $R$ for which the infinite product $\\prod R(n)^{t_n}$ also has an expression in terms of known constants.", "revisions": [ { "version": "v1", "updated": "2017-09-11T14:22:10.000Z" } ], "analyses": { "subjects": [ "11A63", "11B83", "11B85", "68R15" ], "keywords": [ "gamma function", "thue-morse sequence", "rational function", "similar infinite products", "woods-robbins product" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }