{ "id": "1809.06541", "version": "v1", "published": "2018-09-18T05:43:48.000Z", "updated": "2018-09-18T05:43:48.000Z", "title": "Existence and exactness of exponential Riesz sequences and frames for fractal measures", "authors": [ "Dorin Ervin Dutkay", "Shahram Emami", "Chun-Kit Lai" ], "categories": [ "math.FA", "math.CA" ], "abstract": "We study the construction of exponential frames and Riesz sequences for a class of fractal measures on ${\\mathbb R}^d$ generated by infinite convolution of discrete measures using the idea of frame towers and Riesz-sequence towers. The exactness and overcompleteness of the constructed exponential frame or Riesz sequence is completely classified in terms of the cardinality at each level of the tower. Using a version of the solution of the Kadison-Singer problem, known as the $R_{\\epsilon}$-conjecture, we show that all these measures contain exponential Riesz sequences of infinite cardinality. Furthermore, when the measure is the middle-third Cantor measure, or more generally for self-similar measures with no-overlap condition, there are always exponential Riesz sequences of maximal possible Beurling dimension.", "revisions": [ { "version": "v1", "updated": "2018-09-18T05:43:48.000Z" } ], "analyses": { "keywords": [ "fractal measures", "measures contain exponential riesz sequences", "exponential frame", "middle-third cantor measure", "no-overlap condition" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }