{ "id": "1601.05231", "version": "v1", "published": "2016-01-20T10:40:02.000Z", "updated": "2016-01-20T10:40:02.000Z", "title": "Distinguished connections on $(J^{2}=\\pm 1)$-metric manifolds", "authors": [ "Fernando Etayo", "Rafael SantamarĂ­a" ], "categories": [ "math.DG" ], "abstract": "We study several linear connections (the first canonical, the Chern, the well adapted, the Levi Civita, the Kobayashi-Nomizu, the Yano, the Bismut and those with totally skew-symmetric torsion) which can be defined on the four geometric types of $(J^2=\\pm1)$-metric manifolds. We characterize when such a connection is adapted to the structure, and obtain a lot of results about coincidence among connections. We prove that the first canonical and the well adapted connections define a one-parameter family of adapted connections, named canonical connections, thus extending to almost Norden and almost product Riemannian manifolds the families introduced in almost Hermitian and almost para-Hermitian manifolds. We also prove that every connection studied in this paper is a canonical connection, when it exists and it is an adapted connection.", "revisions": [ { "version": "v1", "updated": "2016-01-20T10:40:02.000Z" } ], "analyses": { "subjects": [ "53C15", "53C05", "53C50", "53C07" ], "keywords": [ "metric manifolds", "distinguished connections", "canonical connection", "product riemannian manifolds", "levi civita" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }