기초과학연구원 이산수학그룹
On May 18, 2022, Jan Kurkofka from the University of Birmingham gave an online talk at the Virtual Discrete Math Colloquium on the canonical decomposition of finite graphs into highly connected local parts. The title of his talk was “Canonical Graph Decompositions via Coverings“.
The IBS Discrete Mathematics Group welcomes Amadeus Reinald, a visiting graduate student from the ENS de Lyon in France. He is planning to stay with us until August 26, 2022.
The IBS Discrete Mathematics Group welcomes Dr. Stijn Cambie, a new (and first) research fellow at the IBS Extremal Combinatorics and Probability Group from May 16, 2022. He received his Ph.D. from the Radboud University in the Netherlands under the supervision of Prof. Ross Kang. He is interested in extremal problems on various graph parameters and in extremal set theory.
On May 16, 2022, Andreas Holmsen from KAIST presented a theorem proving a colorful generalization of the Goodman-Pollack-Wenger theorem, answering a conjecture of Arocha, Bracho, and Montejano, at the Discrete Math Seminar. The title of his talk was “A colorful version of the Goodman-Pollack-Wenger transversal theorem“.
On May 9, 2022, Kyeongsik Nam (남경식) from KAIST gave a talk at the Discrete Math Seminar Kyeongsik Nam (남경식) gave a talk on the number of subgraphs isomorphic to a fixed graph in a random graph and the exponential random graph model at the Discrete Math Seminar. The title of his talk was “Large deviations for subgraph counts in random graphs“.
On May 2, 2022, Cheolwon Heo (허철원) from Sungkyunkwan University gave a talk at the Discrete Math Seminar on the dichotomy of the problem on deciding the existence of a binary matroid homomorphism to a fixed binary matroid. The title of his talk was “The complexity of the matroid-homomorphism problems“.
On April 27, 2022, Michael Savery from the Oxford University gave an online talk at the Virtual Discrete Math Colloquium on finding a graph of huge chromatic number such that every induced subgraph of large chromatic number has an induced copy of a fixed subgraph at the Virtual Discrete Math Colloquium. The title of his talk was “Induced subgraphs of induced subgraphs of large chromatic number“.
On April 25, 2022, Boram Park (박보람) from Ajou University gave a talk at the Discrete Math Seminar on the odd coloring of graphs, which is a proper coloring of a graph such that every non-isolated vertex has a color having an odd number of neighbors having that color. The title of her talk was “Odd coloring of sparse graphs“.
On April 13, 2022, Jakub Gajarský from the University of Warsaw gave an online talk at the Virtual Discrete Math Colloquium on the FO model checking on interpretations of classes of graphs of bounded local clique-width. The title of his talk was “Model Checking on Interpretations of Classes of Bounded Local Clique-Width“.
On April 11, 2022, Younjin Kim (김연진) from POSTECH gave a talk at the Discrete Math Seminar on the number of k-dimensional corner-free subsets of the k-dimensional grid {1,2,…n}^k. The title of her talk was “On the extremal problems related to Szemerédi’s theorem”.