{ "id": "1501.07446", "version": "v1", "published": "2015-01-29T13:19:57.000Z", "updated": "2015-01-29T13:19:57.000Z", "title": "Survey on approximating L^2-invariants by their classical counterparts: Betti numbers, torsion invariants and homological growth", "authors": [ "Wolfgang Lueck" ], "comment": "63 pages Comment are very wellcome", "categories": [ "math.GT" ], "abstract": "In this paper we discuss open problems concerning L^2-invariants focusing on approximation by towers of finite coverings.", "revisions": [ { "version": "v1", "updated": "2015-01-29T13:19:57.000Z" } ], "analyses": { "subjects": [ "59Q99", "22D25", "46L99", "58J52" ], "keywords": [ "betti numbers", "torsion invariants", "homological growth", "classical counterparts", "approximating" ], "note": { "typesetting": "TeX", "pages": 63, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2015arXiv150107446L" } } }