Invertibility of symmetric random matrices
Invertibility of symmetric random matrices
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对称随机矩阵的可逆性
DOI:
10.1002/rsa.20429
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发表时间:
2011
影响因子:
1
通讯作者:
R. Vershynin
中科院分区:
文献类型:
--
作者:
R. Vershynin
We study n×n symmetric random matrices H, possibly discrete, with iid above‐diagonal entries. We show that H is singular with probability at most exp(−nc) , and ||H−1||=O(n) . Furthermore, the spectrum of H is delocalized on the optimal scale o(n−1/2) . These results improve upon a polynomial singularity bound due to Costello, Tao and Vu, and they generalize, up to constant factors, results of Tao and Vu, and Erdös, Schlein and Yau.Copyright © 2012 Wiley Periodicals, Inc. Random Struct. Alg., 44, 135‐182, 2014