The IBS discrete mathematics group welcomes two new students.
Donggyu Kim (김동규) is a new graduate student from July 2019 and is currently a graduate student at the department of mathematical sciences, KAIST.
William Overman is a visiting student from June 2019 to August 2019 and is currently an undergraduate student in California Institute of Technology. His research visit is sponsored by his home university.
On June 19, 2019, Suil O (오수일) from SUNY Korea, Incheon presented his work on an upper bound of the third largest eigenvalue of a connected r-regular graph to have an odd (1,b)-factor. The title of his talk was “An odd [1,b]-factor in regular graphs from eigenvalues”.
This year, 2019 Combinatorics Workshop (2019 조합론 학술대회) will be held in Songdo, Incheon from August 13, 2019 to August 15, 2019. This is an annual meeting of combinatorics people in Korea, started in 2004.
The list of major speakers includes Mihyun Kang from T. U. Graz and Jaehoon Kim from KAIST, Seung Jin Lee from Seoul National University, and Meesue Yoo from Dankook University.
On June 3, 2019, Jinyoung Park (박진영) from Rutgers University, USA presented her joint work with Jeff Kahn on the number of maximal independent sets in the hypercube graph at the Discrete Math Seminar. The title of her talk was “The maximal independent sets in the Hamming cube”.
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On May 16, 2019, Xin Zhang (张欣) from Xidian University, China discusses various results on the equitable tree-k-coloring of graphs, a problem of partitioning the vertex set of a graph into vertex-disjoint induced subgraphs having no cycles with almost same size. The title of his talk was “On equitable tree-colorings of graphs”. Xin Zhang is visiting IBS Discrete Mathematics Group from May 15 to May 19.
Sang June Lee (이상준) from Duksung Women’s University presented his recent work on the strong Sidon sets at the Discrete Math Seminar on May 8, 2019. The title of his talk was “On strong Sidon sets of integers”.
Rose McCarty from University of Waterloo presented her recent breakthrough on the polynomially 𝜒-boundedness of circle graphs at the Discrete Math Seminar on April 26, 2019 . The title of her talk was “circle graphs are polynomially chi-bounded.”