An elementary proof of the restricted invertibility theorem
An elementary proof of the restricted invertibility theorem
复制标题
限制可逆性定理的基本证明
DOI:
--
复制
发表时间:
2009
期刊:
影响因子:
--
通讯作者:
N. Srivastava
中科院分区:
文献类型:
--
作者:
D. Spielman;N. Srivastava
We give an elementary proof of a generalization of Bourgain and Tzafriri’s Restricted Invertibility Theorem, which says roughly that any matrix with columns of unit length and bounded operator norm has a large coordinate subspace on which it is well-invertible. Our proof gives the tightest known form of this result, is constructive, and provides a deterministic polynomial time algorithm for finding the desired subspace.