عنوان مجله
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Georgian Mathematical Journal
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چکیده
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An interesting question about the perturbed sequences is: when do they inherit the properties of
the original one? An elegant relation between frames (fusion frames) and their perturbations is the relation
of their redundancies. In this paper, we investigate these relationships. Also, we express the redundancy of
frames (fusion frames) in terms of the cosine angle between some subspaces.
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