Spectral extremal results on trees

Longfei Fang, Huiqiu Lin, Jinlong Shu +1

Let $\mathrm{spex}(n,F)$ be the maximum spectral radius over all $F$-free graphs of order $n$, and $\mathrm{SPEX}(n,F)$ be the family of $F$-free graphs of order $n$ with spectral radius…