2019. 12. 05. 14:15 - 2019. 12. 05. 15:45
Renyi Intezet, nagyterem
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Esemény típusa:
szeminárium
Szervezés:
Intézeti
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Kombinatorika szeminárium
Leírás
In 1987, Bollobás showed that the chromatic number of a random graph $G(n,p)$ is asymptotically almost surely equal to $(1+o(1))\dfrac{n}{\log_b(n)}$ where $b = 1/(1-p)$. Essential to the proof was a sharp concentration of the clique number $\omega$ number of $G(n,p)$. Motivated by a problem of computing the edit distance function of a random graph, we prove a generalization where "clique" is replaced by induced copies of (the complement of) the $t$-partite Turán graph. This result matches a special case of a weaker concentration result due to Bollobás and Thomason in 2000 where "clique" is instead replaced by any induced subgraph from a hereditary property.