{ "id": "2305.06072", "version": "v1", "published": "2023-05-10T11:53:02.000Z", "updated": "2023-05-10T11:53:02.000Z", "title": "Explicit, recurrent, determinantal expressions of the $k$th power of formal power series and applications to the generalized Bernoulli numbers", "authors": [ "Said Zriaa", "Mohammed Mouçouf" ], "categories": [ "math.NT" ], "abstract": "In this work, the authors provide closed forms and recurrence expressions for computing the $k$th power of the formal power series, some of them in terms of a determinant of some matrices. As a consequence, we obtain the reciprocal of the unit of any formal power series. We apply these results to the generalized Bernoulli numbers and Bernoulli numbers, we derive new closed-form expressions and some recursive relations of these famous numbers. In addition, we present several identities in determinant form. Using these results, an elegant generalization of a well known identity of Euler is presented. We also note some connections between the Stirling numbers of the second kind and the generalized Bernoulli numbers.", "revisions": [ { "version": "v1", "updated": "2023-05-10T11:53:02.000Z" } ], "analyses": { "keywords": [ "formal power series", "generalized bernoulli numbers", "th power", "determinantal expressions", "applications" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }