English

Integrality Gap of the Vertex Cover Linear Programming Relaxation

Data Structures and Algorithms 2019-07-26 v1 Discrete Mathematics

Abstract

We give a characterization result for the integrality gap of the natural linear programming relaxation for the vertex cover problem. We show that integrality gap of the standard linear programming relaxation for any graph G equals (22χf(G))\left(2-\frac{2}{\chi^f(G)}\right) where χf(G)\chi^f(G) denotes the fractional chromatic number of G.

Cite

@article{arxiv.1907.11209,
  title  = {Integrality Gap of the Vertex Cover Linear Programming Relaxation},
  author = {Mohit Singh},
  journal= {arXiv preprint arXiv:1907.11209},
  year   = {2019}
}

Comments

6 pages

R2 v1 2026-06-23T10:31:08.883Z