{ "id": "2401.01435", "version": "v1", "published": "2024-01-02T21:10:49.000Z", "updated": "2024-01-02T21:10:49.000Z", "title": "Nilpotent polynomials over $\\mathbb{Z}$", "authors": [ "Sayak Sengupta" ], "comment": "19 pages in total. This is a continuation of the research done by the author in the paper \"Locally nilpotent polynomials over $\\mathbb{Z}$\". Comments are welcome", "categories": [ "math.NT" ], "abstract": "For a polynomial $u(x)$ in $\\mathbb{Z}[x]$ and $r\\in\\mathbb{Z}$, we consider the orbit of $u$ at $r$ denoted and defined by $\\mathcal{O}_u(r):=\\{u^{(n)}(r)~|~n\\in\\mathbb{N}\\}$. Here we study polynomials for which $0$ is in the orbit for a given $r$. We provide a complete classification of these polynomials when $|r|\\le 4$, with $|r|\\le 1$ already done in \\cite{SS23}. The central goal of this paper is to study the following questions: (i) relationship between the integers $r$ and $m$, for a polynomial $u$ in $N_{r,m}$; (ii) classification of the polynomials with nilpotency index $|r|$ for large enough $|r|$; and (iii) integer sequences with a generating polynomial.", "revisions": [ { "version": "v1", "updated": "2024-01-02T21:10:49.000Z" } ], "analyses": { "subjects": [ "11A41", "37P05", "11A05", "11A07", "37P25" ], "keywords": [ "nilpotent polynomials", "study polynomials", "complete classification", "integer sequences", "central goal" ], "note": { "typesetting": "TeX", "pages": 19, "language": "en", "license": "arXiv", "status": "editable" } } }