Bounding the edge cover of a hypergraph
Combinatorics
2021-08-27 v2
Abstract
Let be a hypergraph. Let , then is an {\it edge cover}, or a {\it set cover}, if . A subset of vertices is {\it independent} in if no two vertices in are in any edge. Let and denote the cardinalities of a smallest edge cover and largest independent set in , respectively. We show that , where is a parameter called the {\it mighty degeneracy} of . Furthermore, we show that the inequality is tight and demonstrate the applications in domination theory.
Cite
@article{arxiv.2108.07984,
title = {Bounding the edge cover of a hypergraph},
author = {Farhad Shahrokhi},
journal= {arXiv preprint arXiv:2108.07984},
year = {2021}
}
Comments
This is a revised version of the paper [Bounding the edge cover of a hypergraph] recently posted on arXiv