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arXiv 0802.3956math.PRmath.FA
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随机矩形矩阵的最小奇异值

The smallest singular value of a random rectangular matrix

Mark Rudelson, Roman Vershynin

摘要:

我们证明了随机亚高斯矩阵最小奇异值的最佳估计,该估计对所有固定维度都有效。对于具有独立同分布次高斯元素的N × n矩阵A,A的最小奇异值以高概率至少为\sqrt{N} - \sqrt{n-1}阶.并给出了概率的精确估计。

英文摘要:

We prove an optimal estimate on the smallest singular value of a random subgaussian matrix, valid for all fixed dimensions. For an N by n matrix A with independent and identically distributed subgaussian entries, the smallest singular value of A is at least of the order \sqrt{N} - \sqrt{n-1} with high probability. A sharp estimate on the probability is also obtained.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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