{ "id": "2312.16908", "version": "v1", "published": "2023-12-28T08:59:24.000Z", "updated": "2023-12-28T08:59:24.000Z", "title": "A classification of permutation binomials of the form $x^i+ax$ over $\\mathbb{F}_{2^n}$ for dimensions up to 8", "authors": [ "Yi Li", "Xiutao Feng", "Qiang Wang" ], "categories": [ "math.NT", "cs.IT", "math.CO", "math.IT" ], "abstract": "Permutation polynomials with few terms (especially permutation binomials) attract many people due to their simple algebraic structure. Despite the great interests in the study of permutation binomials, a complete characterization of permutation binomials is still unknown. In this paper, we give a classification of permutation binomials of the form $x^i+ax$ over $\\mathbb{F}_{2^n}$, where $n\\leq 8$ by characterizing three new classes of permutation binomials. In particular one of them has relatively large index $\\frac{q^2+q+1}{3}$ over $\\mathbb{F}_{q^3}$.", "revisions": [ { "version": "v1", "updated": "2023-12-28T08:59:24.000Z" } ], "analyses": { "subjects": [ "11T06", "11T55" ], "keywords": [ "permutation binomials", "classification", "dimensions", "simple algebraic structure", "permutation polynomials" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }