Tight concentration of star saturation number in random graphs

Autor: Demyanov, Sergej, Zhukovskii, Maksim
Rok vydání: 2022
Předmět:
Druh dokumentu: Working Paper
Popis: For given graphs $F$ and $G$, the minimum number of edges in an inclusion-maximal $F$-free subgraph of $G$ is called the $F$-saturation number and denoted $\mathrm{sat}(G, F)$. For the star $F=K_{1,r}$, the asymptotics of $\mathrm{sat}(G(n,p),F)$ is known. We prove a sharper result: whp $\mathrm{sat}(G(n,p), K_{1,r})$ is concentrated in a set of 2 consecutive points.
Databáze: arXiv