English

Induced subgraphs of hypercubes and a proof of the Sensitivity Conjecture

Combinatorics 2019-09-02 v2 Computational Complexity

Abstract

In this paper, we show that every (2n1+1)(2^{n-1}+1)-vertex induced subgraph of the nn-dimensional cube graph has maximum degree at least n\sqrt{n}. This result is best possible, and improves a logarithmic lower bound shown by Chung, F\"uredi, Graham and Seymour in 1988. As a direct consequence, we prove that the sensitivity and degree of a boolean function are polynomially related, solving an outstanding foundational problem in theoretical computer science, the Sensitivity Conjecture of Nisan and Szegedy.

Keywords

Cite

@article{arxiv.1907.00847,
  title  = {Induced subgraphs of hypercubes and a proof of the Sensitivity Conjecture},
  author = {Hao Huang},
  journal= {arXiv preprint arXiv:1907.00847},
  year   = {2019}
}