English

A separation between tropical matrix ranks

Combinatorics 2017-12-11 v1

Abstract

We continue to study the rank functions of tropical matrices. In this paper, we explain how to reduce the computation of ranks for matrices over the `supertropical semifield' to the standard tropical case. Using a counting approach, we prove the existence of a 0101-matrix with many ones and without large all-one submatrices, and we put our results together and construct an n×nn\times n matrix with tropical rank o(n0.5+ε)o(n^{0.5+\varepsilon}) and Kapranov rank no(n)n-o(n).

Keywords

Cite

@article{arxiv.1712.03071,
  title  = {A separation between tropical matrix ranks},
  author = {Yaroslav Shitov},
  journal= {arXiv preprint arXiv:1712.03071},
  year   = {2017}
}

Comments

9 pages

R2 v1 2026-06-22T23:12:18.579Z