{ "id": "2404.04747", "version": "v1", "published": "2024-04-06T22:13:45.000Z", "updated": "2024-04-06T22:13:45.000Z", "title": "The $L^1$ mean of the exponential sum of the divisor function", "authors": [ "Tomos Parry" ], "categories": [ "math.NT" ], "abstract": "We give a relatively simple proof that \\[ \\int _0^1\\left |\\sum _{n\\leq x}d(n)e(n\\alpha )\\right |d\\alpha \\asymp \\sqrt x.\\]", "revisions": [ { "version": "v1", "updated": "2024-04-06T22:13:45.000Z" } ], "analyses": { "keywords": [ "exponential sum", "divisor function", "relatively simple proof" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }