Local Laws for Sparse Sample Covariance Matrices without the truncation condition
Probability
2022-09-28 v1
Abstract
We consider sparse sample covariance matrices , where is a sparse matrix of order with the sparse probability . We prove the local Marchenko--Pastur law in some complex domain assuming that , and some -moment condition is fulfilled, .
Keywords
Cite
@article{arxiv.2209.13207,
title = {Local Laws for Sparse Sample Covariance Matrices without the truncation condition},
author = {F. Götze and A. Tikhomirov and D. Timushev},
journal= {arXiv preprint arXiv:2209.13207},
year = {2022}
}