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We analyse the problem of characterizing optimal dual frames for erasures with respect to the spectral radius. Sufficient conditions are obtained for a dual frame of a given frame to be an optimal dual frame for two erasures. Sufficient conditions are also obtained for the canonical dual to be a two-erasure optimal dual with respect to spectral radius. We also establish some relations for optimality conditions between one erasure and two erasures in spectrally optimal dual frames.
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