An extremal problem for integer sparse recovery
Combinatorics
2019-10-11 v2 Information Theory
Numerical Analysis
math.IT
Numerical Analysis
Abstract
Motivated by the problem of integer sparse recovery we study the following question. Let be an integer matrix whose entries are in absolute value at most . How large can be if all submatrices of are non-degenerate? We obtain new upper and lower bounds on and answer a special case of the problem by Brass, Moser and Pach on covering -dimensional grid by linear subspaces.
Cite
@article{arxiv.1904.08661,
title = {An extremal problem for integer sparse recovery},
author = {Sergei Konyagin and Benny Sudakov},
journal= {arXiv preprint arXiv:1904.08661},
year = {2019}
}