Spectral radius conditions for fractional $[a,b]$-covered graphs

Junjie Wang, Jiaxin Zheng, Yonglei Chen

Published 2022-10-07Version 1

A graph $G$ is called fractional $[a,b]$-covered if for every edge $e$ of $G$ there is a fractional $[a,b]$-factor with the indicator function $h$ such that $h(e)=1$. In this paper, we provide tight spectral radius conditions for graphs being fractional $[a,b]$-covered.