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Equivalence relations and distances between Hilbert frames |
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| Authors: | Radu Balan |
| Affiliation: | Program in Applied and Computational Mathematics, Princeton University, Princeton, New Jersey 08544 |
| Abstract: | We study some equivalency relations between Hilbert frames and closed subspaces of  . We define also a distance between frames and we establish the geometric meaning of this metric. Finally we find the closest and respectively the nearest tight frame to a given frame. |
| Keywords: | Closeness bound nearness quadratic distance between frames |
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