Seonghyuk Im (임성혁), Large clique subdivisions in graphs without small dense subgraphs

Room B232 IBS (기초과학연구원)

What is the largest number $f(d)$ where every graph with average degree at least $d$ contains a subdivision of $K_{f(d)}$? Mader asked this question in 1967 and $f(d) = \Theta(\sqrt{d})$ was proved by Bollobás and Thomason and independently by Komlós and Szemerédi. This is best possible by considering a disjoint union of $K_{d,d}$. However, this

Eun-Kyung Cho (조은경), Independent domination of graphs with bounded maximum degree

Room B232 IBS (기초과학연구원)

The independent domination number of a graph $G$, denoted $i(G)$, is the minimum size of an independent dominating set of $G$. In this talk, we prove a series of results regarding independent domination of graphs with bounded maximum degree. Let $G$ be a graph with maximum degree at most $k$ where $k \ge 1$. We prove that

IBS 이산수학그룹 Discrete Mathematics Group
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