Tue | Jul 02 | 07:30 | Kisun Lee | TBA | |

Tue | Jun 18 | 07:30 | Semin Yoo | TBA | |

Tue | Jun 11 | 07:30 | Maria Chudnovsky | TBA | |

Tue | Jun 04 | 07:30 | Jane Tan | TBA | |

Tue | May 28 | 07:30 | Yongho Shin | Three-way online correlated selection | |

Tue | May 21 | 07:30 | Vadim V. Lozin | TBA | |

Tue | May 14 | 07:30 | Niloufar Fuladi | Cross-cap drawings and signed reversal distance | |

Tue | May 07 | 07:30 | Tony Huynh | Aharoni’s rainbow cycle conjecture holds up to an additive constant | |

Tue | Apr 30 | 07:30 | Maximilian Gorsky | Towards the half-integral Erdős-Pósa property for even dicycles | |

Tue | Apr 23 | 07:30 | Víctor Dalmau | Right-adjoints of Datalog Programs | |

Tue | Apr 16 | 07:30 | Magnus Wahlström | Algorithmic aspects of linear delta-matroids | |

Tue | Apr 09 | 07:30 | Eero Räty | Positive discrepancy, MaxCut and eigenvalues of graphs | |

Tue | Apr 02 | 07:30 | Casey Tompkins | On graphs without cycles of length 0 modulo 4 | |

Tue | Mar 26 | 07:30 | Evangelos Protopapas | Erdős-Pósa Dualities for Minors | |

Tue | Mar 12 | 07:30 | Linda Cook | On polynomial degree-boundedness | |

Tue | Feb 27 | 07:30 | Jie Han | Perfect matchings in dense uniform hypergraphs | |

Wed | Feb 14 | 07:30 | Sebastian Wiederrecht | Packing even directed circuits quarter-integrally | |

Tue | Feb 06 | 07:30 | Ander Lamaison | Uniform Turán density beyond 3-graphs | |

Tue | Jan 23 | 07:30 | Zichao Dong | Convex polytopes in non-elongated point sets in $\mathbb{R}^d$ | |

Tue | Jan 16 | 07:30 | Matthew Kroeker | Average flat-size in complex-representable matroids | |

Thu | Jan 11 | 07:30 | Jinyoung Park | Dedekind’s Problem and beyond | |

Tue | Jan 02 | 07:30 | Daniel McGinnis | Applications of the KKM theorem to problems in discrete geometry | |

Tue | Dec 19 | 07:30 | Shengtong Zhang | TBA | |

Tue | Dec 12 | 07:30 | Ting-Wei Chao | Tight Bound on Joints Problem and Partial Shadow Problem | |

Tue | Nov 28 | 07:30 | Hyunwoo Lee | Towards a high-dimensional Dirac’s theorem | |

Tue | Nov 07 | 07:30 | Bruce A. Reed | Some Variants of the Erdős-Sós Conjecture | |

Tue | Oct 31 | 07:30 | James Davies | Odd distances in colourings of the plane | |

Tue | Oct 24 | 07:30 | Robert Hickingbotham | Powers of planar graphs, product structure, and blocking partitions | |

Tue | Oct 17 | 07:30 | Matija Bucić | Essentially tight bounds for rainbow cycles in proper edge-colourings | |

Tue | Oct 10 | 07:30 | Domagoj Bradač | Effective bounds for induced size-Ramsey numbers of cycles | |

Tue | Sep 26 | 07:30 | Carl R. Yerger | Solving Problems in Graph Pebbling using Optimization and Structural Techniques | |

Tue | Sep 19 | 07:30 | Donggyu Kim (김동규) | Orthogonal matroids over tracts | |

Tue | Sep 12 | 07:30 | Seog-Jin Kim | The square of every subcubic planar graph of girth at least 6 is 7-choosable | |

Tue | Sep 05 | 07:30 | Sebastian Wiederrecht | Delineating half-integrality of the Erdős-Pósa property for minors | |

Tue | Aug 29 | 07:30 | Dabeen Lee | TBA | |

Tue | Aug 22 | 07:30 | Linda Cook | TBA | |

Wed | Aug 09 | 07:30 | Amzi Jeffs | Intersection patterns of convex sets | |

Wed | Aug 02 | 07:30 | Daniel Král' | High chromatic common graphs | |

Tue | Jul 25 | 07:30 | Dong Yeap Kang | Hamilton cycles and optimal matchings in a random subgraph of uniform Dirac hypergraphs | |

Tue | Jul 18 | 07:30 | Andrzej Grzesik | Rainbow Turán problems | |

Mon | Jul 10 | 07:30 | Xuding Zhu | List version of 1-2-3 conjecture | |

Tue | Jul 04 | 07:30 | Tuan Tran | Complexity of null dynamical systems | |

Tue | Jun 27 | 07:30 | Chong Shangguan | The hat guessing number of graphs | |

Tue | Jun 20 | 07:30 | Guanghui Wang | TBA | |

Tue | Jun 13 | 07:30 | Minho Cho | Strong Erdős-Hajnal property on chordal graphs and its variants | |

Tue | May 30 | 07:30 | Suyun Jiang | How connectivity affects the extremal number of trees | |

Tue | May 16 | 07:30 | Oliver Janzer | Small subgraphs with large average degree | |

Tue | May 09 | 07:30 | Jozef Skokan | Separating the edges of a graph by a linear number of paths | |

Tue | May 02 | 07:30 | Rob Morris | An exponential improvement for diagonal Ramsey | |

Tue | Apr 25 | 07:30 | Hyunwoo Lee | On perfect subdivision tilings | |

Tue | Apr 11 | 07:30 | James Davies | Two structural results for pivot-minors | |

Tue | Apr 04 | 07:30 | István Tomon | Configurations of boxes | |

Tue | Mar 28 | 07:30 | Tianchi Yang | On the maximum number of edges in k-critical graphs | |

Tue | Mar 21 | 07:30 | Younjin Kim | Problems on Extremal Combinatorics | |

Tue | Mar 14 | 07:30 | Stijn Cambie | Recent progress on the Union-closed conjecture and related | |

Tue | Mar 07 | 07:30 | Eunjin Oh | Parameterized algorithms for the planar disjoint paths problem | |

Tue | Feb 28 | 07:30 | Maya Sankar | The Turán Numbers of Homeomorphs | |

Tue | Feb 21 | 07:30 | Meike Hatzel | Fixed-Parameter Tractability of Directed Multicut with Three Terminal Pairs Parametrised by the Size of the Cutset: Twin-Width Meets Flow-Augmentation | |

Tue | Feb 14 | 07:30 | Raphael Steiner | Strengthening Hadwiger’s conjecture for 4- and 5-chromatic graphs | |

Tue | Jan 31 | 07:30 | Abhishek Methuku | A proof of the Erdős–Faber–Lovász conjecture | |

Tue | Jan 17 | 07:30 | Noleen Köhler | Twin-Width VIII: Delineation and Win-Wins | |

Tue | Jan 10 | 07:30 | Mamadou Moustapha Kanté | TBA | |

Tue | Jan 03 | 07:30 | Youngho Yoo | Approximating TSP walks in subcubic graphs | |

Wed | Dec 28 | 07:30 | Stijn Cambie | The 69-conjecture and more surprises on the number of independent sets | |

Tue | Dec 06 | 07:30 | Giannos Stamoulis | Model-Checking for First-Order Logic with Disjoint Paths Predicates in Proper Minor-Closed Graph Classes | |

Tue | Nov 22 | 07:30 | Seonghyuk Im | A proof of the Elliott-Rödl conjecture on hypertrees in Steiner triple systems | |

Tue | Nov 15 | 07:30 | Sebastian Wiederrecht | Excluding single-crossing matching minors in bipartite graphs | |

Tue | Nov 08 | 07:30 | Jungho Ahn | Unified almost linear kernels for generalized covering and packing problems on nowhere dense classes | |

Tue | Oct 18 | 07:30 | Florent Koechlin | TBA | |

Tue | Oct 11 | 07:30 | Nika Salia | Exact results for generalized extremal problems forbidding an even cycle | |

Tue | Oct 04 | 07:30 | Zixiang Xu | On the degenerate Turán problems | |

Tue | Sep 27 | 07:30 | Alexander Clifton | Ramsey Theory for Diffsequences | |

Tue | Sep 13 | 07:30 | Sebastian Wiederrecht | Killing a vortex | |

Tue | Sep 06 | 07:30 | Bjarne Schuelke | A local version of Katona’s intersection theorem | |

Tue | Aug 30 | 07:30 | Jun Gao | Number of (k-1)-cliques in k-critical graph | |

Tue | Aug 23 | 07:30 | Raul Wayne Teixeira Lopes | Temporal Menger and related problems | |

Tue | Aug 16 | 07:30 | Noleen Köhler | Testing first-order definable properties on bounded degree graphs | |

Tue | Aug 09 | 07:30 | Eun Jung Kim | Directed flow-augmentation | |

Mon | Aug 01 | 07:30 | Seunghun Lee | Inscribable order types | |

Tue | Jul 19 | 05:00 | Jinyoung Park | Thresholds 2/2 | |

Mon | Jul 18 | 07:30 | Jinyoung Park | Thresholds 1/2 | |

Mon | Jul 11 | 07:30 | Kevin Hendrey | TBA | |

Mon | Jul 04 | 07:30 | Eric Vigoda | Computational phase transition and MCMC algorithms | |

Mon | Jun 27 | 07:30 | Ben Lund | Radial projections in finite space | |

Mon | Jun 13 | 07:30 | Amadeus Reinald | Twin-width and forbidden subdivisions | |

Mon | May 30 | 07:30 | Hongseok Yang | TBA | |

Mon | May 23 | 07:30 | Stijn Cambie | The precise diameter of reconfiguration graphs | |

Mon | May 16 | 07:30 | Andreas Holmsen | A colorful version of the Goodman-Pollack-Wenger transversal theorem | |

Mon | May 09 | 07:30 | Kyeongsik Nam | Large deviations for subgraph counts in random graphs | |

Mon | May 02 | 07:30 | Cheolwon Heo | The complexity of the matroid-homomorphism problems | |

Mon | Apr 25 | 07:30 | Boram Park | Odd coloring of sparse graphs | |

Mon | Apr 11 | 07:30 | Younjin Kim | On the extremal problems related to Szemerédi’s theorem | |

Mon | Mar 28 | 07:30 | Ben Lund | Thresholds for incidence properties in finite vector spaces | |

Mon | Mar 21 | 07:30 | Jaehoon Kim | Ramsey numbers of cycles versus general graphs | |

Mon | Mar 14 | 07:30 | Tuan Anh Do | Rank- and tree-width of supercritical random graphs | |

Mon | Feb 21 | 07:30 | Donggyu Kim | A stronger version of Tutte’s wheel theorem for vertex-minors | |

Tue | Feb 15 | 07:30 | Jinha Kim | Independent domination of graphs with bounded maximum degree | |

Tue | Jan 25 | 07:30 | O-joung Kwon | Reduced bandwidth: a qualitative strengthening of twin-width in minor-closed classes (and beyond) | |

Tue | Jan 18 | 07:30 | Jaehyeon Seo | TBA | |

Tue | Jan 11 | 07:30 | Andreas Holmsen | Some recent results on geometric transversals | |

Tue | Jan 04 | 07:30 | Seunghun Lee | Transversals and colorings of simplicial spheres | |

Tue | Dec 14 | 07:30 | Tuan Tran | Exponential decay of intersection volume with applications on list-decodability and sphere-covering bounds | |

Tue | Dec 07 | 07:30 | Eun-Kyung Cho | Independent domination of graphs with bounded maximum degree | |

Tue | Nov 30 | 07:30 | Seonghyuk Im | Large clique subdivisions in graphs without small dense subgraphs | |

Tue | Nov 23 | 07:30 | Casey Tompkins | Ramsey numbers of Boolean lattices | |

Tue | Nov 09 | 07:30 | Jaehoon Kim | 2-complexes with unique embeddings in 3-space | |

Tue | Nov 02 | 07:30 | Ben Lund | Maximal 3-wise intersecting families | |

Tue | Oct 26 | 07:30 | Donggyu Kim | 𝝘-graphic delta-matroids and their applications | |

Tue | Oct 12 | 07:30 | Joonkyung Lee | Majority dynamics on sparse random graphs | |

Tue | Oct 05 | 07:30 | Eunjin Oh | Feedback Vertex Set on Geometric Intersection Graphs | |

Tue | Sep 28 | 07:30 | Kevin Hendrey | Extremal functions for sparse minors | |

Tue | Sep 07 | 07:30 | Dabeen Lee | Mixing sets, submodularity, and chance-constrained optimization | |

Tue | Aug 31 | 07:30 | Cheolwon Heo | TBA | |

Tue | Aug 24 | 07:30 | Eun Jung Kim | A Constant-factor Approximation for Weighted Bond Cover | |

Tue | Aug 17 | 07:30 | Linda Cook | Two results on graphs with holes of restricted lengths | |

Tue | Aug 10 | 07:30 | Duksang Lee | Intertwining connectivities for vertex-minors and pivot-minors | |

Tue | Jul 27 | 06:00 | Euiwoong Lee | The Karger-Stein algorithm is optimal for k-cut | |

Tue | Jul 20 | 07:30 | Semin Yoo | Combinatorics of Euclidean spaces over finite fields | |

Tue | Jul 13 | 07:30 | Jaehoon Kim | $K_{r+1}$-saturated graphs with small spectral radius | |

Tue | Jul 06 | 07:30 | Suil O | Eigenvalues and [a, b]-factors in regular graphs | |

Tue | Jun 29 | 07:30 | Jeong Ok Choi | Invertibility of circulant matrices of arbitrary size | |

Tue | Jun 22 | 07:30 | Hongseok Yang | DAG-symmetries and Symmetry-Preserving Neural Networks | |

Tue | Jun 08 | 06:00 | O-joung Kwon | Classes of intersection digraphs with good algorithmic properties | |

Tue | Jun 01 | 07:30 | Doowon Koh | Mattila-Sjölin type functions: A finite field model | |

Tue | May 18 | 07:30 | Pascal Gollin | TBA | |

Tue | May 11 | 07:30 | Mark Siggers | The list switch homomorphism problem for signed graphs | |

Tue | Apr 27 | 07:30 | Jungho Ahn | Well-partitioned chordal graphs with the obstruction set and applications | |

Tue | Apr 20 | 07:30 | Sang-il Oum | What is an isotropic system? | |

Tue | Apr 06 | 07:30 | Rutger Campbell | TBA | |

Tue | Mar 30 | 07:30 | Casey Tompkins | 3-uniform hypergraphs avoiding a cycle of length four | |

Mon | Mar 22 | 07:30 | Hong Liu | Nested cycles with no geometric crossing | |

Tue | Mar 16 | 07:30 | Se-Young Yun | Regret in Online Recommendation Systems | |

Tue | Mar 09 | 07:30 | Debsoumya Chakraborti | Some classical problems in graph saturation | |

Tue | Mar 02 | 07:30 | Kevin Hendrey | A unified half-integral Erdős-Pósa theorem for cycles in graphs labelled by multiple abelian groups | |

Tue | Feb 09 | 07:30 | Doowon Koh | On the cone restriction conjecture in four dimensions and applications in incidence geometry | |

Tue | Jan 26 | 07:30 | Tuan Tran | Minimum saturated families of sets | |

Tue | Jan 19 | 07:30 | Ben Lund | Perfect matchings and derangements on graphs | |

Tue | Jan 12 | 07:30 | Andreas Holmsen | Discrete geometry in convexity spaces | |

Tue | Jan 05 | 07:30 | O-joung Kwon | Directed tangles and applications | |

Tue | Dec 22 | 07:30 | Jinha Kim | On a conjecture by Kalai and Meshulam – the Betti number of the independence complex of ternary graphs | |

Tue | Dec 08 | 07:30 | Hong Liu | A solution to Erdős and Hajnal’s odd cycle problem | |

Tue | Dec 01 | 07:30 | Debsoumya Chakraborti | Rainbow matchings in edge-colored simple graphs | |

Tue | Nov 24 | 07:30 | Duksang Lee | Characterizing matroids whose bases form graphic delta-matroids | |

Tue | Nov 10 | 07:30 | Casey Tompkins | Extremal forbidden poset problems in Boolean and linear lattices | |

Tue | Nov 03 | 07:30 | Jaeseong Oh | A 2-isomorphism theorem for delta-matroids | |

Tue | Oct 27 | 07:30 | Jeong Ok Choi | Various game-theoretic models on graphs | |

Wed | Oct 21 | 07:30 | Joonkyung Lee | On graph norms for complex-valued functions | |

Tue | Sep 29 | 07:30 | Minki Kim | Complexes of graphs with bounded independence number | |

Tue | Sep 22 | 07:30 | Jinha Kim | Collapsibility of Non-Cover Complexes of Graphs | |

Tue | Sep 15 | 07:30 | Debsoumya Chakraborti | Maximum number of cliques in a graph with bounded maximum degree | |

Tue | Sep 08 | 07:30 | Rutger Campbell | Disasters in abstracting combinatorial properties of linear dependence | |

Tue | Aug 25 | 07:30 | Ben Lund | Point-plane incidence bounds | |

Tue | Aug 18 | 07:30 | Tuan Tran | Anti-concentration phenomena | |

Tue | Aug 11 | 07:30 | Yunbum Kook | Vertex Sparsification for Edge Connectivity | |

Tue | Aug 04 | 07:30 | June Huh | Kazhdan-Lusztig polynomials of graphs and matroids | |

Tue | Jul 28 | 07:30 | Eun Jung Kim | Solving hard cut problems via flow-augmentation | |

Tue | Jul 21 | 07:30 | Ilkyoo Choi | Flexibility of Planar Graphs | |

Tue | Jul 14 | 07:30 | Casey Tompkins | Inverse Turán problems | |

Tue | Jul 07 | 07:30 | Seog-Jin Kim | Online DP-coloring of graphs | |

Tue | Jun 30 | 07:30 | Dennis Wong | Generating Gray codes and universal cycles for weak orders | |

Tue | Jun 23 | 07:30 | Jaehoon Kim | A resilience version of Pósa’s theorem | |

Tue | Jun 16 | 07:30 | Andreas Holmsen | Fractional Helly and topological complexity | |

Tue | Jun 09 | 07:30 | Jiseung Kim | Hardness and concrete security in cryptography | |

Tue | Jun 02 | 07:30 | Huy-Tung Nguyen | The average cut-rank of graphs | |

Tue | May 26 | 07:30 | Hong Liu | Asymptotic structure for the clique density theorem | |

Tue | May 19 | 07:30 | O-joung Kwon | Mim-width: a width parameter beyond rank-width | |

Tue | May 12 | 07:30 | Eun Jung Kim | Twin-width: tractable FO model checking | |

Tue | Apr 28 | 07:30 | Seunghun Lee | Leray numbers of complexes of graphs with bounded matching number | |

Tue | Apr 21 | 07:30 | Sang-il Oum | Survey on vertex-minors | |

Tue | Apr 14 | 07:30 | Casey Tompkins | Saturation problems in the Ramsey theory of graphs, posets and point sets | |