{ "id": "math/0501048", "version": "v1", "published": "2005-01-04T14:12:00.000Z", "updated": "2005-01-04T14:12:00.000Z", "title": "A Survey on the Complemented Subspace Problem", "authors": [ "Mohammad Sal Moslehian" ], "comment": "15 pages", "journal": "Trends in Math. 9 (2006), no. 1, 91-98.", "categories": [ "math.FA" ], "abstract": "The complemented subspace problem asks, in general, which closed subspaces $M$ of a Banach space $X$ are complemented; i.e. there exists a closed subspace $N$ of $X$ such that $X=M\\oplus N$? This problem is in the heart of the theory of Banach spaces and plays a key role in the development of the Banach space theory. Our aim is to investigate some results on complemented subspaces, to give a history of the subject, and to present some open problems.", "revisions": [ { "version": "v1", "updated": "2005-01-04T14:12:00.000Z" } ], "analyses": { "subjects": [ "46B20", "46B25", "46B28", "46B15", "46E30" ], "keywords": [ "banach space theory", "closed subspace", "complemented subspace problem asks", "open problems", "development" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 15, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2005math......1048S" } } }