Two applications of a bound on the Hadamard product with a Cauchy matrix
نویسندگان
چکیده
A fundamental bound for a Hadamard multiplier operator of Cauchy t ype implies a known bound on the inverse of the operator T : X ! AX ,XBas well as a general perturbation bound involving the unitary factor in the polar decomposition; the latter bound leads to a perturbation bound on the positive semideenite factor.
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