Invertibility of random matrices: norm of the inverse
classification
🧮 math.FA
keywords
normrandomcenteredclosecopiesentriesestimateexceed
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Let A be an n by n matrix, whose entries are independent copies of a centered random variable satisfying the subgaussian tail estimate. We prove that the operator norm of A^{-1} does not exceed Cn^{3/2} with probability close to 1.
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