{ "id": "1903.11651", "version": "v1", "published": "2019-03-27T19:01:08.000Z", "updated": "2019-03-27T19:01:08.000Z", "title": "Greedy approximation for biorthogonal systems in quasi-Banach spaces", "authors": [ "Fernando Albiac", "Jose L. Ansorena", "Pablo M. Berna", "Przemyslaw Wojtaszczyk" ], "categories": [ "math.FA" ], "abstract": "The general problem addressed in this work is the development of a systematic study of the thresholding greedy algorithm for general biorthogonal systems (also known as Markushevich bases) in quasi-Banach spaces from a functional-analytic point of view. We revisit the concepts of greedy, quasi-greedy, and almost greedy bases in this comprehensive framework and provide the (nontrivial) extensions of the corresponding characterizations of those types of bases. As a by-product of our work, new properties arise, and the relations amongst them are carefully discussed.", "revisions": [ { "version": "v1", "updated": "2019-03-27T19:01:08.000Z" } ], "analyses": { "subjects": [ "46B15", "41A65" ], "keywords": [ "quasi-banach spaces", "greedy approximation", "general biorthogonal systems", "properties arise", "thresholding greedy algorithm" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }