The integer cp-rank of $2 \times 2$ matrices
Spectral Theory
2019-09-30 v1
Abstract
We show the cp-rank of an integer doubly nonnegative matrix does not exceed .
Cite
@article{arxiv.1909.12645,
title = {The integer cp-rank of $2 \times 2$ matrices},
author = {Thomas Laffey and Helena Šmigoc},
journal= {arXiv preprint arXiv:1909.12645},
year = {2019}
}