기초과학연구원 이산수학그룹
On June 22, 2021, Hongseok Yang (양홍석) from KAIST gave a talk at the Discrete Math Seminar on introducing DAG-symmetries and characterizing linear layers of neural networks preserving these symmetries. The title of his talk was “DAG-symmetries and Symmetry-Preserving Neural Networks“.
On June 16, 2021, Alan Lew from the Technion gave an online talk at the Virtual Discrete Math Colloquium on extending a classical theorem of Roberts on an upper bound of the boxicity of graphs to the d-boxicity of simplicial complexes. The title of his talk was “Representability and boxicity of simplicial complexes“.
The “Round the World Relay in Combinatorics” was held from 11 am KST of June 8 to 9 am KST of June 9. O-joung Kwon (권오정) from the Incheon National University and the IBS Discrete Mathematics Group gave a talk at the Discrete Math Seminar organized as a part of the “Round the World Relay in Combinatorics” at 3 pm KST. His talk was about classes of intersection digraphs and their bi-min-width. The title of his talk was “Classes of intersection digraphs with good algorithmic properties“.
On June 2, 2021, Adam Zsolt Wagner from the Tel Aviv University gave an online talk at the Virtual Discrete Math Colloquium on disproving graph theory conjectures by using reinforcement learning. The title of the talk was “Constructions in combinatorics via neural networks“.
IBS DIMAG is very happy to join the first international effort to have a full day of online talks in combinatorics. It’ll be on Zoom.
meeting id: 875 9395 3555 (relay)
Website: http://people.maths.ox.ac.uk/scott/relay.htm
On June 1, 2021, Doowon Koh (고두원) from Chungbuk National University gave a talk on a variation of the Erdős–Falconer distinct distance problem over finite fields at the Discrete Math Seminar. The title of the talk was “Mattila-Sjölin type functions: A finite field model“.
On May 26, 2021, Dimitrios M. Thilikos from LIRMM, CNRS gave an online talk at the Virtual Discrete Math Colloquium about an upper bound of the size of obstructions for minor-closed classes of graphs at the Virtual Discrete Math Colloquium. The title of the talk was “Bounding Obstructions sets: the cases of apices of minor closed classes“.
On May 25, 2021, Ben Lund from the IBS Discrete Mathematics Group gave a talk at the Discrete Math Seminar on the existence of a limit shape for lattice zonotopes in all dimensions and other relevant results. The title of his talk was “Limit shape of lattice Zonotopes“.
On May 21, 2021, Benjamin Bumpus from the University of Glasgow gave an online talk at the Virtual Discrete Math Colloquium about the directed branch-width for directed graphs. The title of his talk was “Directed branch-width: A directed analogue of tree-width“.
On May 18, 2021, Pascal Gollin from the IBS Discrete Mathematics Group gave a talk at the Discrete Math Seminar on the existence of a large flame extending a given vertex-flame in a countable digraph. The title of his talk was “Enlarging vertex-flames in countable digraphs“.