Singularity of sparse Bernoulli matrices
Probability
2020-04-08 v1
Abstract
Let be an random matrix with i.i.d. Bernoulli(p) entries. We show that there is a universal constant such that, whenever and satisfy , \begin{align*} {\mathbb P}\big\{\mbox{ is singular}\big\}&=(1+o_n(1)){\mathbb P}\big\{\mbox{ contains a zero row or column}\big\}\\ &=(2+o_n(1))n\,(1-p)^n, \end{align*} where denotes a quantity which converges to zero as . We provide the corresponding upper and lower bounds on the smallest singular value of as well.
Cite
@article{arxiv.2004.03131,
title = {Singularity of sparse Bernoulli matrices},
author = {Alexander E. Litvak and Konstantin E. Tikhomirov},
journal= {arXiv preprint arXiv:2004.03131},
year = {2020}
}