English

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 AA be an m×dm \times d integer matrix whose entries are in absolute value at most kk. How large can be d=d(m,k)d=d(m,k) if all m×mm \times m submatrices of AA are non-degenerate? We obtain new upper and lower bounds on dd and answer a special case of the problem by Brass, Moser and Pach on covering mm-dimensional k××kk \times \cdots\times k 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}
}
R2 v1 2026-06-23T08:43:35.949Z