{ "id": "2008.12877", "version": "v1", "published": "2020-08-28T23:31:59.000Z", "updated": "2020-08-28T23:31:59.000Z", "title": "Completion by perturbations", "authors": [ "Victor Olevskii" ], "categories": [ "math.FA", "math.CA" ], "abstract": "We prove that any non-complete orthonormal system in a Hilbert space can be transformed into a basis by small perturbations.", "revisions": [ { "version": "v1", "updated": "2020-08-28T23:31:59.000Z" } ], "analyses": { "subjects": [ "46B15", "42C30", "15B10" ], "keywords": [ "completion", "non-complete orthonormal system", "small perturbations" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }