{ "id": "1810.04827", "version": "v1", "published": "2018-10-11T03:04:14.000Z", "updated": "2018-10-11T03:04:14.000Z", "title": "Derived length of zero entropy groups acting on compact Kahler manifolds", "authors": [ "Tien-Cuong Dinh", "Keiji Oguiso", "De-Qi Zhang" ], "comment": "29 pages", "categories": [ "math.AG", "math.CV", "math.DS" ], "abstract": "Let X be a compact Kahler manifold of dimension n. Let G be a group of zero entropy automorphisms of X. Let G0 be the set of elements in G which are isotopic to the identity. We prove that after replacing G by a suitable finite-index subgroup, G/G0 is a unipotent group of derived length at most n-1. This is a corollary of an optimal upper bound of length involving the Kodaira dimension of X. We also study the algebro-geometric structure of X when it admits a group action with maximal derived length n-1.", "revisions": [ { "version": "v1", "updated": "2018-10-11T03:04:14.000Z" } ], "analyses": { "subjects": [ "14J50", "32M05", "32H50", "37B40" ], "keywords": [ "compact kahler manifold", "zero entropy groups acting", "derived length", "zero entropy automorphisms", "optimal upper bound" ], "note": { "typesetting": "TeX", "pages": 29, "language": "en", "license": "arXiv", "status": "editable" } } }