기초과학연구원 이산수학그룹
On July 18, 2023, Andrzej Grzesik from Jagiellonian University gave a talk at the Discrete Math Seminar on the rainbow version of Turán problems. The title of his talk was “rainbow Turán problems.”
On July 13, 2023, the Open Symposium at the Discrete Mathematics Group was held. There were four talks by the members of the Discrete Mathematics Group.
| 9:40-10:05 | Obstructions for dense analogs of tree-depth | Sang-il OUM |
| 10:05-10:20 | Structural and extremal results for twin-width | Kevin HENDREY |
| 10:20-10:35 | Down-sets in combinatorial posets | Rutger CAMPBELL |
| 10:35-10:50 | Reuniting 𝜒-boundedness with polynomial 𝜒-boundedness | Linda COOK |
On July 10, 2023, Xuding Zhu from Zhejiang Normal University gave a talk at the Discrete Math Seminar on the 1-2-3 conjecture of Karoński, Łuczak, and Thomason, its list version by Bartnicki, Grytczuk, and Niwczyk, and the usage of Combinatorial Nullstellensatz. The title of his talk was “List version of 1-2-3 conjecture.”
On July 4, 2023, Tuan Tran from the University of Science and Technology of China gave a talk on a Sauer-Shelah-type lemma in the study of the maximal pattern entropy of a theoretical dynamical system and its connection to a recent result in communication complexity at the Discrete Math Seminar. The title of his talk was “Complexity of null dynamical systems.”
On June 27, 2023, Chong Shangguan (上官冲) from Shandong University gave a talk at the Discrete Math Seminar on the maximum number of colors of hats so that at least one of the players can correctly guess his or her hat color while only seeing the colors of their neighbors on a graph. The title of his talk was “the hat guessing number of graphs.”
The IBS Discrete Mathematics Group welcomes Zhuo Wu (吴茁) from the University of Warwick, a new visiting student of the IBS Extremal Combinatorics and Probability Group (ECOPRO). He will stay with us for 1 year.
The IBS Discrete Mathematics Group welcomes Dr. Chuandong Xu (徐川东), a new visiting scholar from Xidian University, China. He is visiting the IBS Discrete Mathematics Group for 1 year from June 21, 2023. He is a lecturer at Xidian University and received his Ph.D. from Northwestern Polytechnical University in China in 2016.
On June 21, 2023, President Do Young Noh of IBS visited the Discrete Mathematics Group (DIMAG) and the Extremal Combinatorics and Probability Group (ECOPRO), engaging in discussions with members of both groups.
On June 20, 2023, Guanghui Wang (王光辉) from Shandong University gave a talk at the Discrete Math Seminar on the maximum number of edges in uniformly dense hypergraphs with a forbidden subgraph. The title of his talk was “Embeddings in uniformly dense hypergraphs.”
The IBS discrete mathematics group welcomes Dr. Dong Yeap Kang (강동엽), a new research fellow at the IBS Extremal Combinatorics and Probability Group from June 16, 2023. Dr. Kang received his Ph.D. from the Department of Mathematical Science at KAIST in 2020 under the supervision of Prof. Sang-il Oum. Before joining the IBS Extremal Combinatorics and Probability Group, he was a research fellow at the University of Birmingham. He won the IBS Young Scientist Fellowship.