Talks

2024

1. September 21, 2024: Zhuo Wu, 11th Chinese National Conference on Combinatorics and Graph Theory, Qingdao, China.
   • Large blowup of cliques in various dense graph
2. August 28, 2024: Hong Liu, Seminar at Combinatorial Mathematics Society of Australasia, Melbourne, Australia.
   • Chromatic and homomorphism threshold, combinatorial convexity and beyond
3. July 19, 2024: Dongyeap Kang, 2024 International Congress of Basic Science, Beijing, China.
   • A proof of the Erdős–Faber–Lovász conjecture
4. July 16, 2024: Seonghyuk Im, 9th European Congress of Mathematics, Sevilla, Spain.
   • Graph with any rational density and no rich subsets of linear size
5. July 11, 2024: Seonghyuk Im, Summit 280, Budapest, Hungary.
   • Dirac’s theorem for linear hypergraphs
6. July 3, 2024: Seonghyuk Im, 30th British Combinatorial Conference, London, UK.
   • Dirac’s theorem for linear hypergraphs
7. May 31, 2024: Dongyeap Kang, 31st KIAS Combinatorics Workshop, Jeju, South Korea.
   • Solution to a problem of Erdős on the chromatic index of hypergraphs with bounded codegree
8. May 27, 2024: Dongyeap Kang, Combinatorics seminar, Hanyang Univ, Seoul, South Korea.
   • Random graphs/hypergraphs and thresholds
9. May 17, 2024: Hong Liu, 2024 KSIAM Spring Meeting, Kyungpook Univ, Daegu, South Korea.
   • Chromatic and homomorphism threshold, combinatorial convexity and beyond
10. May 9, 2024: Hong Liu, Discrete Analysis Seminar, Yonsei Univ, Seoul, South Korea.
    • Graph with any rational density and no rich subsets of linear size
11. April 25, 2024: Zixiang Xu, Combinatorics seminar, Northwestern Polytechnical University, Xi'an, China.
    • Theoretical bounds and stability results on set systems
12. April 21, 2024: Zixiang Xu, Directed graph workshop, Nankai Univ, Tianjin, China.
    • Hitting all maximum independent sets
13. April 20, 2024: Hong Liu, Directed graph workshop, Nankai Univ, Tianjin, China.
    • Graph with any rational density and no rich subsets of linear size
14. April 19, 2024: Suyun Jiang, 2024 KMS Spring Meeting, Daejeon, South Korea.
    • Generalized Ramsey-Turán density for cliques
15. April 19, 2024: Dongyeap Kang, 2024 KMS Spring Meeting, Daejeon, South Korea.
    • Graph and hypergraph coloring: a survey
16. April 19, 2024: Seonghyuk Im, 2024 KMS Spring Meeting, Daejeon, South Korea.
    • On Rainbow Turán Densities of Trees
17. April 18, 2024: Zixiang Xu, Combinatorics seminar, Nankai Univ, Tianjin, China.
    • An introduction to bipartite Turán problems
18. April 17, 2024: Hong Liu, Combinatorics seminar, Univ Science and Techonology Shanghai, Shanghai, China.
    • Exponential decay of intersection volume and applications
19. March 1, 2024: Zixiang Xu, Combinatorics seminar, Fuzhou Univ, Fuzhou, China.
    • On Bollobás-Erdős-Tuza conjecture
20. February 28, 2024: Zhuo Wu, Combinatorics seminar, Nankai Univ, Tianjin, China.
    • Distribution of Colours in Rainbow $H$-free Colourings
21. January 23, 2024: Zichao Dong, IBS Discrete Math Seminar, Daejeon, South Korea.
    • Convex polytopes in non-elongated point sets in $\mathbb{R}^d$

2023

22. December 25, 2023: Ruonan Li, Annual Conference of Chinese Mathematical Society, Satellite Conference on Combinatorics and Graph Theory, Dalian, China.
    • Monochromatic triangles, properly colored spanning structure and rainbow stars
23. December 18, 2023: Hong Liu, Combinatorics seminar, Southern Univ Science and Technology, Shenzhen, China.
    • Chromatic and homomorphism threshold, combinatorial convexity and beyond
24. November 23, 2023: Hong Liu, Combinatorics seminar, Beijing Institute of Technology, Beijing, China.
    • Exponential decay of intersection volume and applications
25. November 2, 2023: Dongyeap Kang, The 3rd East Asia Workshop on Extremal and Structural Graph Theory, Okinawa, Japan.
    • Robust Hamiltonicity of Dirac hypergraphs
26. November 1, 2023: Hong Liu, Combinatorics seminar, Fuzhou Univ, Fuzhou, China.
    • Chromatic and homomorphism threshold, combinatorial convexity and beyond
27. October 29, 2023: Zixiang Xu, KMS Annual Meeting, Seoul, South Korea.
    • When can a large Kr-free graph be homomorphic to a small one?
28. October 27, 2023: Dongyeap Kang, KMS Annual Meeting, Seoul, South Korea.
    • Thresholds for Latin squares and Steiner triple systems: Bounds within a logarithmic factor
29. October 26, 2023: Zixiang Xu, Combinatorics seminar, Shandong Univ, Qingdao, China.
    • An extremal problem on k-neighborly family of boxes
30. October 26, 2023: Yisai Xue, The 8th Qilu Youth Forum, Shandong Univ, Qingdao, China.
    • On the stability of chromatic thresholds
31. October 26, 2023: Jun Gao, The 8th Qilu Youth Forum, Qingdao, China.
    • Many Hamiltonian subsets in large graphs with given density
32. October 25, 2023: Suyun Jiang, The 8th Qilu Youth Forum, Shandong Univ, Jinan, China.
    • Generalized Ramsey-Turán problem for cliques
33. October 25, 2023: Zixiang Xu, Combinatorics seminar, Shandong Univ, Jinan, China.
    • Structures of ultra-Kr-free graphs
34. October 25, 2023: Yisai Xue, The 8th Qilu Youth Forum, Shandong Univ, Jinan, China.
    • The generalized Turán number of generalized theta graphs
35. October 25, 2023: Jun Gao, The 8th Qilu Youth Forum, Jinan, China.
    • Extremal number of graphs from geometric shapes
36. October 21, 2023: Ruonan Li, Developments in Combinatorics Workshop, Jeju, South Korea.
    • Properly colored spanning trees in edge-colored complete graphs without monochromatic triangles
37. October 20, 2023: Zixiang Xu, 3rd Developments in Combinatorics Workshop, Jeju, South Korea.
    • Combinatorial proof of Graham-Pollak Theorem
38. September 23, 2023: Hong Liu, Indonesia-Japan Conference on Discrete and Computational Geometry, Graph theory, Bali, Indonesia.
    • Turán problem for graphs from geometric shapes
39. September 18, 2023: Jun Gao, Combinatorics seminar, Chinese Academy of Sciences, Beijing, China.
    • The Erdos distinct subset sums problem in a modular setting
40. September 17, 2023: Zixiang Xu, Youth Forum at Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, China.
    • Turán number of bipartite graphs from geometric shapes
41. September 15, 2023: Zixiang Xu, Combinatorics seminar, Nankai Univ, Tianjin, China.
    • On a new variant of the Erdős–Gyárfás problem
42. September 15, 2023: Jun Gao, Combinatorics seminar, Nankai Univ, Tianjin, China.
    • Tight bounds towards a conjecture of Gallai
43. September 13, 2023: Hong Liu, Combinatorics seminar, Nankai Univ, Tianjin, China.
    • Beyond chromatic threshold via (p,q)-theorem, and shpar blow-up phenomenon
44. August 24, 2023: Zixiang Xu, ICIAM 2023, Waseda Univ, Tokyo, Japan.
    • Robust Linear algebra methods and some applications
45. August 24, 2023: Jun Gao, ICIAM 2023, Waseda Univ, Tokyo, Japan.
    • Many Hamiltonian subsets in large graphs with given density
46. August 24, 2023: Hong Liu, ICIAM 2023, Waseda Univ, Tokyo, Japan.
    • Turán problem for graphs from geometric shapes
47. August 19, 2023: Zixiang Xu, Yokohama Workshop on Graph Theory, Yokohama, Japan.
    • An Extremal problem related to Graham-Pollak Theorem
48. August 19, 2023: Hong Liu, Yokohama Workshop on Graph Theory, Yokohama Univ, Yokohama, Japan.
    • Exponential decay of intersection volume and applications
49. August 9, 2023: Dongyeap Kang, KIAS Summer Workshop on Graph Theory, Seoul, South Korea.
    • Hamilton cycles in a random subgraph of uniform Dirac hypergraphs
50. August 7, 2023: Zixiang Xu, Combinatorics seminar, Shandong Univ, Qingdao, China.
    • Theoretical bounds and stability results on set systems
51. July 27, 2023: Zixiang Xu, OSRC 2023 Graph Theory and Combinatorics, Taiyuan, China.
    • Turán number of graphs from geometric shapes
52. July 27, 2023: Hong Liu, OSRC 2023 Graph Theory and Combinatorics, Taiyuan, China.
    • Kissing numbers and spherical codes in high dimensions
53. July 25, 2023: Dongyeap Kang, IBS Discrete Math Seminar, Daejeon, South Korea.
    • Hamilton cycles and optimal matchings in a random subgraph of uniform Dirac hypergraphs
54. July 11, 2023: Suyun Jiang, Combinatorics seminar, Shandong Univ, Jinan, China.
    • How connectivity affects the extremal number of trees
55. June 29, 2023: Stijn Cambie, 2nd China Korea young Scholars Symposium on Discrete mathematics, Tianjin, China.
    • The Erdős distinct subset sums problem in modular setting for small modulus
56. June 27, 2023: Hong Liu, Graph theory workshop, Heidelberg Univ, Heidelberg, Germany.
    • Crux and its applications
57. June 13, 2023: Minho Cho, IBS Discrete Math Seminar, Daejeon, South Korea.
    • Strong Erdős-Hajnal property on chordal graphs and its variants
58. June 9, 2023: Hong Liu, Combinatorics seminar, Southern Univ Science and Technology, Shenzhen, China.
    • Kissing numbers and spherical codes in high dimensions
59. June 5, 2023: Jun Gao, Canadian Discrete and Algorithmic Mathematics 2023, Winnipeg, Canada.
    • Some recent results on the Turán numbers of bipartite graphs
60. June 5, 2023: Hong Liu, Combinatorics seminar, Fuzhou Univ, Fuzhou, China.
    • Turán problem for graphs from geometric shapes
61. June 1, 2023: Younjin Kim, 28th KIAS Combinatorics Workshop, Jeju, South Korea.
    • On the extremal problems related to Szemerédi’s theorem
62. June 1, 2023: Stijn Cambie, 28th KIAS Combinatorics Workshop, Jeju, South Korea.
    • On a few problems of Erdős et al. in new settings
63. June 1, 2023: Nika Salia, 28th KIAS Combinatorics Workshop, Jeju, South Korea.
    • Linear three-uniform hypergraphs with no Berge path of given length
64. May 30, 2023: Suyun Jiang, IBS Discrete Math Seminar, Daejeon, South Korea.
    • How connectivity affects the extremal number of trees
65. April 29, 2023: Hyunwoo Lee, 2023 KMS Spring Meeting, Daejeon, South Korea.
    • Covering multigraphs with bipartite graphs
66. April 28, 2023: Younjin Kim, 2023 KMS Spring Meeting, Daejeon, South Korea.
    • On the extremal problems related to Szemerédi’s theorem
67. April 28, 2023: Suyun Jiang, 2023 KMS Spring Meeting, Daejeon, South Korea.
    • How connectivity affects the extremal number of trees
68. April 28, 2023: Jun Gao, 2023 KMS Spring Meeting, Daejeon, South Korea.
    • Many Hamiltonian subsets in large graphs with given density
69. April 28, 2023: Stijn Cambie, 2023 KMS Spring Meeting, Daejeon, South Korea.
    • Maximum total distance of hypergraphs
70. April 19, 2023: Hong Liu, Colloquium, Zhejiang Univ, Hangzhou, China.
    • Sublinear expanders and its applications
71. April 17, 2023: Hong Liu, Combinatorics seminar, Shanghai Univ, Shanghai, China.
    • Sublinear expanders and its applications
72. April 14, 2023: Stijn Cambie, Monthly Mathematics Seminar, Vietnam National University, Ho Chi Minh City, Vietnam.
    • Packing colourings in graphs; State-of-the-Art and further challenges
73. March 30, 2023: Minho Cho, Topology and Combinatorics seminar, Ajou Univ, Suwon, South Korea.
    • Strong Erdős-Hajnal property on chordal graphs and its variants
74. March 22, 2023: Minho Cho, Combinatorics seminar, Hanyang Univ, Seoul, South Korea.
    • Strong Erdős-Hajnal property on chordal graphs and its variants
75. March 21, 2023: Younjin Kim, IBS Discrete Math Seminar, Daejeon, South Korea.
    • Problems on Extremal Combinatorics
76. February 23, 2023: Hong Liu, 27th KIAS Combinatorics Workshop, KIAS, Seoul, South Korea.
    • Bipartite Turán problem from periodic tilings
77. February 18, 2023: Hong Liu, Colloquium, Chinese Academic of Science, Beijing, China.
    • Exponential decay on intersection volume and it applications
78. February 17, 2023: Hong Liu, Combinatorics Seminar, Nankai Univ, Tianjin, China.
    • Mixing vertices and almost expanders
79. February 14, 2023: Stijn Cambie, IBS Discrete Math Seminar, Daejeon, South Korea.
    • Recent progress on the Union-closed conjecture and related
80. February 14, 2023: Hong Liu, Combinatorics Seminar, Shandong Univ, Jinan, China.
    • Mixing vertices and almost expanders
81. January 10, 2023: Zixiang Xu, Invited talk, Shandong University, Jinan, China.
    • Algebraic methods in intersective sets and set systems
82. January 10, 2023: Jun Gao, Invited talk, Shandong University, Jinan, China.
    • Counting the number of (k-1)-cliques in a k-critical graph
83. January 3, 2023: Zixiang Xu, Invited talk, Taiyuan University of Technology, Taiyuan, China.
    • Theoretical bounds and stability results on set systems

2022

84. December 28, 2022: Stijn Cambie, IBS Discrete Math Seminar, Daejeon, South Korea.
    • The 69-conjecture and more surprises on the number of independent sets
85. December 20, 2022: Stijn Cambie, seminar at KULAK, Kortrijk, Belgium.
    • The 69-conjecture and more surprises on the number of independent sets
86. December 17, 2022: Stijn Cambie, European Mathematical Cup, UA, Antwerp, Belgium.
    • Background, strategies and examples; Recent Research in mathematics
87. December 14, 2022: Stijn Cambie, Discrete math seminar at UVA, Amsterdam, Netherlands.
    • The number of (maximal) independent sets; surprising minimum question and the 69-conjecture
88. December 2, 2022: Hong Liu, Combinatorics seminar at Beijing Institute of Technology, Beijing, China.
    • Rainbow cycles in properly edge-colored graphs
89. November 16, 2022: Stijn Cambie, Topology and Combinatorics seminar at Ajou Univ., Suwon, South Korea.
    • Packing Variants of Colourings
90. November 11, 2022: Hong Liu, Combinatorics seminar at Fuzhou Univ., Fuzhou, China.
    • Ramsey goodness of cycles
91. November 2, 2022: Hong Liu, Combinatorics seminar at Nankai Univ., Tianjin, China.
    • Crux of a graph and its applications
92. October 22, 2022: Zixiang Xu, Forum on Extremal Combinatorics and Information Theory at Soochow Univ., Suzhou, China.
    • Intersective sets over abelian groups
93. October 19, 2022: Stijn Cambie, KMS Fall Meeting, Seoul, South Korea.
    • The importance of the empty set in Katona’s Circle Method and implications
94. October 1, 2022: Nika Salia, Combinatorics Workshop 2022 at GIST, Gwangju, South Korea.
    • Stability version of Dirac’s theorem and its applications for generalized Turán problems
95. September 30, 2022: Zixiang Xu, Combinatorics Workshop 2022 at GIST, Gwangju, South Korea.
    • Intersective sets over abelian groups
96. September 30, 2022: Stijn Cambie, Combinatorics Workshop 2022 at GIST, Gwangju, South Korea.
    • On entropy of graphs
97. September 30, 2022: Jun Gao, Combinatorics Workshop 2022 at GIST, Gwangju, South Korea.
    • A unified proof of conjectures on cycle lengths in graphs
98. September 28, 2022: Joonkyung Lee, Graph Limits, Nonparametric Models, and Estimation at Simons Institute, Berkeley, US.
    • Recent developments on graph norms
99. August 19, 2022: Joonkyung Lee, Topology and Combinatorics seminar at Ajou Univ., Suwon, South Korea.
    • Ramsey multiplicity and common graphs
100. June 30, 2022: Hong Liu, Third Southwestern German Workshop on Graph Theory, Heidelberg, Germany.
     • What do we get from crux?
101. May 27, 2022: Stijn Cambie, Combinatorics Special Session I (Graph Theory) at KSIAM 2022 Spring Conference, Daejeon, South Korea.
     • Regular Cereceda’s Conjecture
102. May 23, 2022: Stijn Cambie, IBS Discrete Math Seminar, Daejeon, South Korea.
     • The precise diameter of reconfiguration graphs
103. May 6, 2022: Hong Liu, Combinatorics seminar at Fuzhou Univ., Fuzhou, China.
     • Exponential decay of intersection volume and applications
104. April 29, 2022: Hong Liu, Invited lecture at 2022 KMS Spring Meeting, Seoul, South Korea.
     • Exponential decay of intersection volume and applications
105. April 15, 2022: Hong Liu, Georgia Tech Combinatorics Seminar, Atlanta, USA.
     • Exponential decay of intersection volume and applications