{ "id": "math/0107043", "version": "v2", "published": "2001-07-06T04:14:18.000Z", "updated": "2001-10-15T00:09:01.000Z", "title": "On the Divergence of the Rogers-Ramanujan Continued Fraction on the Unit Circle", "authors": [ "Jimmy Mc Laughlin", "Doug Bowman" ], "comment": "27 pages. Some interesting new examples", "categories": [ "math.NT" ], "abstract": "Let the continued fraction expansion of any irrational number $t \\in (0,1)$ be denoted by $[0,a_{1}(t),a_{2}(t),...]$ and let the i-th convergent of this continued fraction expansion be denoted by $c_{i}(t)/d_{i}(t)$. Let \\[ S=\\{t \\in (0,1): a_{i+1}(t) \\geq \\phi^{d_{i}(t)} \\text{infinitely often}\\}, \\] where $\\phi = (\\sqrt{5}+1)/2$. Let $Y_{S} =\\{\\exp(2 \\pi i t): t \\in S \\}$. It is shown that if $y \\in Y_{S}$ then the Rogers-Ramanujan continued fraction, R(y), diverges at y. S is an uncountable set of measure zero. It is also shown that there is an uncountable set of points, $G \\subset Y_{S}$, such that if $y \\in G$, then R(y) does not converge generally. It is further shown that R(y) does not converge generally for |y| > 1 and that R(y) does converge generally if y is a primitive 5m-th root of unity, some $m \\in \\mathbb{N}$.", "revisions": [ { "version": "v2", "updated": "2001-10-15T00:09:01.000Z" } ], "analyses": { "subjects": [ "11A55" ], "keywords": [ "rogers-ramanujan continued fraction", "unit circle", "continued fraction expansion", "divergence", "uncountable set" ], "note": { "typesetting": "TeX", "pages": 27, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2001math......7043M" } } }