Donggyu Kim (김동규), A stronger version of Tutte’s wheel theorem for vertex-minors
Room B232 IBS (기초과학연구원)Tutte (1961) proved that every simple
10 events found.
Discrete Math Seminar
Sang-il Oum (엄상일), Obstructions for matroids of path-width at most k and graphs of linear rank-width at most k
Room B232 IBS (기초과학연구원)Every minor-closed class of matroids of bounded branch-width can be characterized by a minimal list of excluded minors, but unlike graphs, this list could be infinite in general. However, for …
Kevin Hendrey, A unified Erdős-Pósa theorem for cycles in graphs labelled by multiple abelian groups (revisited)
Room B232 IBS (기초과학연구원)This talk follows on from the recent talk of Pascal Gollin in this seminar series, but will aim to be accessible for newcomers. Erdős and Pósa proved in 1965 that …
Tuan Anh Do, Rank- and tree-width of supercritical random graphs
Room B232 IBS (기초과학연구원)It is known that the rank- and tree-width of the random graph
Jaehoon Kim (김재훈), Ramsey numbers of cycles versus general graphs
Room B232 IBS (기초과학연구원)The Ramsey number
Ben Lund, Thresholds for incidence properties in finite vector spaces
Room B232 IBS (기초과학연구원)Suppose that
Younjin Kim (김연진), On the extremal problems related to Szemerédi’s theorem
Room B232 IBS (기초과학연구원)In 1975, Szemerédi proved that for every real number
Boram Park (박보람), Odd coloring of sparse graphs
Room B232 IBS (기초과학연구원)We introduce an odd coloring of a graph, which was introduced very recently, motivated by parity type colorings of graphs. A proper vertex coloring of graph
Cheolwon Heo (허철원), The complexity of the matroid-homomorphism problems
Room B332 IBS (기초과학연구원)In this talk, we introduce homomorphisms between binary matroids that generalize graph homomorphisms. For a binary matroid
Kyeongsik Nam (남경식), Large deviations for subgraph counts in random graphs
Room B332 IBS (기초과학연구원)The upper tail problem for subgraph counts in the Erdos-Renyi graph, introduced by Janson-Ruciński, has attracted a lot of attention. There is a class of Gibbs measures associated with subgraph …