{ "id": "1801.03654", "version": "v1", "published": "2018-01-11T07:58:34.000Z", "updated": "2018-01-11T07:58:34.000Z", "title": "Proving some identities of Gosper on $q$-trigonometric functions", "authors": [ "Mohamed El Bachraoui" ], "comment": "Accepted in Proc. Amer. Math. Soc", "categories": [ "math.NT" ], "abstract": "Gosper introduced the functions $\\sin_q z$ and $\\cos_q z$ as $q$-analogues for the trigonometric functions $\\sin z$ and $\\cos z$ respectively. He stated but did not prove a variety of identities involving these two $q$-trigonometric functions. In this paper, we shall use the theory of elliptic functions to prove three formulas from the list of Gosper on the functions $\\sin_q z$ and $\\cos_q z$.", "revisions": [ { "version": "v1", "updated": "2018-01-11T07:58:34.000Z" } ], "analyses": { "subjects": [ "33E05", "11F11", "11F12" ], "keywords": [ "trigonometric functions", "identities", "elliptic functions" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }