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List of talks
2025
(1 Oct) Marcelo Sales (UC Irvine), On the Ramsey number of Daisies and other hypergraphs. (poster)
(29 Sep) Eunjin Oh (POSTECH), Approximation algorithm for the geometric multimatching problem. (poster, paper)
(23 Sep) Sang-il Oum (IBS DIMAG), The Erdős–Pósa property for circle graphs as vertex-minors. (poster, paper)
(11 Aug) Yongho Shin (University of Wrocław), Online rounding for set cover under subset arrivals. (poster, paper)
(7 Jul) Sergey Norin (McGill University), Optimizing the Campos–Griffiths–Morris–Sahasrabudhe upper bound on Ramsey numbers. (poster, paper)
(30 Jun) Beomjong Kwak (KAIST), Global well-posedness of the cubic nonlinear Schrödinger equation on 𝕋². (poster, paper)
(16–20 Jun) Discrete Analysis at Yonsei Workshop
(2 Jun) Minho Cho (KIAS), Rainbow problems with oriented matroids. (poster)
(20 May) Bjarne Schülke (IBS ECOPRO), Difficulty of the hypergraph Turán problem. (poster)
(1 May) Jaeseong Oh (KIAS HCMC), Refinement of Hikita's e-positivity theorem via Abreu–Nigro's g-functions and restricted modular law. (poster, paper)
(17 Apr) Daniel McGinnis (Princeton), A necessary and sufficient condition for k-transversals. (poster, paper)
(15 Apr) Andreas Holmsen (KAIST), Boij–Söderberg theory and resolutions of edge ideals. (poster)
(11 Mar) Eunku Park (DGIST), Additive approximation algorithm in hyperbolic space using discrete space. (poster, paper)
(28 Feb) Donggyu Kim (KAIST/IBS DIMAG), Torsor structures on spanning quasi-trees of ribbon graphs. (poster, paper)
(16 Jan) Hanbaek Lyu (University of Wisconsin–Madison), Large random matrices with given margins. (poster, paper)
2024
(23 Dec) Huy Tuan Pham (IAS/CMI), Subset sums, non-averaging sets and convex geometry. (poster, paper 1, paper 2)
(18 Dec) Jineon Baek (Yonsei University) ≪Yonsei Math Special Seminar≫ Optimality of Gerver's sofa (poster, paper).
(2 Dec) Seonwoo Kim (KIAS), Metastability of ferromagnetic Ising model on 2D/3D lattices. (poster)
(26 Nov) Joonkyung Lee (Yonsei University), Counting homomorphisms in antiferromagnetic graphs via Lorentzian polynomials. (paper)
(15 Oct) Seonghyuk Im (KAIST/IBS ECOPRO), Rainbow Turán densities of trees via graph limits. (poster, paper)
(2 Oct) Mathias Schacht (Universität Hamburg), Local structures in Ramsey graphs and generalised Sidon sets. (poster, paper)
(26 Sep) Simón Piga (Universität Hamburg), Powers of Hamilton cycles in directed and oriented graphs. (poster)
(10 Sep) O-joung Kwon (Hanyang University), A coarse Erdős–Pósa theorem. (poster, paper)
(27 Aug) Swee Hong Chan (Rutgers University), Complexity of log-concave inequalities in matroids. (poster, paper)
(16 Aug) Andreas Göbel (Hasso Plattner Institute), The Impact of heterogeneity and geometry on the proof complexity of random satisfiability. (poster, paper)
(13 Jun) Yongho Shin (Yonsei University), Three-way online correlated selection. (poster, paper)
(4 Jun) Leonardo Nagami Coregliano (University of Chicago), Continuous combinatorics and natural quasirandomness. (poster, paper)
(23 May) Ander Lamaison (IBS ECOPRO), Uniform Turán density beyond 3-graphs. (poster, paper)
(9 May) Hong Liu (IBS ECOPRO), Graph with any rational density and no rich subsets of linear size. (poster, paper)
(7 May) Semin Yoo (IBS DIMAG), Paley-like quasi-random graphs arising from polynomials. (poster, paper)
(2 May) James Haglund (University of Pennsylvania), Combinatorial formulas for (Type A) Macdonald polynomials. (poster, paper)
(23 Apr) Jie Han (Beijing Institute of Technology), Rainbow thresholds. (poster, paper)
(18 Apr) Wonwoo Kang (University of Illinois, Urbana Champaign), Skein relations for punctured surfaces. (poster)
(21 Mar) Alexander Clifton (IBS DIMAG), Odd covers of graphs. (poster, paper 1, paper 2)
(14 Mar) Joon-Hyeok Yim (Yale University), Tree fitting problem and hyperbolic distances. (poster, paper)
(7 Mar) Yibo Gao (Peking University), Quantum Bruhat graphs and tilted Richardson varieties. (poster, paper)
(5 Mar) Bjarne Schülke (Caltech), Recent progress on the hypergraph Turán problem, (poster)
(19 Feb) Kyeongsik Nam (KAIST), Large deviations for subgraph counts in random graphs. (poster, paper 1, paper 2)
(25 Jan) Minjae Park (University of Chicago), Random geometry of uniform meandric systems. (poster, paper)
(8 Jan) Jinyoung Park (New York University), Dedekind's Problem and beyond. (poster)
2023
(21 Dec) Kiseok Yeon (Purdue University), Small fractional parts of additive forms. (poster, paper)
(29 Nov) Jang Soo Kim (Sungkyunkwan University), Lecture hall graphs and the Askey scheme. (poster, paper)
(20 Nov) Hyunwoo Lee (KAIST/IBS ECOPRO), Towards a high-dimensional Dirac's theorem. (poster, paper)
(12 Oct) Leo Versteegen (University of Cambridge), Linear graph codes. (poster, paper)
(14 Sep) Jaeseong Oh (Yonsei University), Introduction to zoo of coinvariant rings. (poster)
(28 Jul) Debsoumya Chakraborti (IBS DIMAG), Transversals in collections of graphs. (poster)
(21 Jun) Eric Rubiel Dolores-Cuenca (Yonsei University), A program to solve either the Gold partition conjecture or the 1/3–2/3 conjecture. (poster)
(25 May) Oliver Janzer (University of Cambridge). Resolution of the Erdős–Sauer problem on regular subgraphs. (poster, paper)
(26 Apr) Jozef Skokan (LSE), Separating the edges of a graph by a linear number of paths. (poster, paper)
(5 Apr) Hyunwoo Lee (KAIST/IBS ECOPRO), Survey on Behrend‑type upper bounds for generalised Roth’s theorem. (poster)
The DA seminar at Yonsei University is organised by the combinatorics group (Joonkyung Lee, Jineon Baek, Jaehyeon Seo, and Jisun Baek). For more information, visit the department webpage or contact the organisers.
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