Talks

2024

1. April 25, 2024: Zixiang Xu, Combinatorics seminar, Northwestern Polytechnical University, Xi'an, China.
   • Theoretical bounds and stability results on set systems
2. April 21, 2024: Zixiang Xu, Directed graph workshop, Nankai Univ, Tianjin, China.
   • Hitting all maximum independent sets
3. April 20, 2024: Hong Liu, Directed graph workshop, Nankai Univ, Tianjin, China.
   • Graph with any rational density and no rich subsets of linear size
4. April 19, 2024: Suyun Jiang, 2024 KMS Spring Meeting, Daejeon, South Korea.
   • Generalized Ramsey-Turán density for cliques
5. April 19, 2024: Dongyeap Kang, 2024 KMS Spring Meeting, Daejeon, South Korea.
   • Graph and hypergraph coloring: a survey
6. April 19, 2024: Seonghyuk Im, 2024 KMS Spring Meeting, Daejeon, South Korea.
   • On Rainbow Turán Densities of Trees
7. April 18, 2024: Zixiang Xu, Combinatorics seminar, Nankai Univ, Tianjin, China.
   • An introduction to bipartite Turán problems
8. April 17, 2024: Hong Liu, Combinatorics seminar, Univ Science and Techonology Shanghai, Shanghai, China.
   • Exponential decay of intersection volume and applications
9. March 1, 2024: Zixiang Xu, Combinatorics seminar, Fuzhou Univ, Fuzhou, China.
   • On Bollobás-Erdős-Tuza conjecture
10. February 28, 2024: Zhuo Wu, Combinatorics seminar, Nankai Univ, Tianjin, China.
    • Distribution of Colours in Rainbow $H$-free Colourings
11. January 23, 2024: Zichao Dong, IBS Discrete Math Seminar, Daejeon, South Korea.
    • Convex polytopes in non-elongated point sets in $\mathbb{R}^d$

2023

12. 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
13. December 18, 2023: Hong Liu, Combinatorics seminar, Southern Univ Science and Technology, Shenzhen, China.
    • Chromatic and homomorphism threshold, combinatorial convexity and beyond
14. November 23, 2023: Hong Liu, Combinatorics seminar, Beijing Institute of Technology, Beijing, China.
    • Exponential decay of intersection volume and applications
15. November 2, 2023: Dongyeap Kang, The 3rd East Asia Workshop on Extremal and Structural Graph Theory, Okinawa, Japan.
    • Robust Hamiltonicity of Dirac hypergraphs
16. November 1, 2023: Hong Liu, Combinatorics seminar, Fuzhou Univ, Fuzhou, China.
    • Chromatic and homomorphism threshold, combinatorial convexity and beyond
17. October 29, 2023: Zixiang Xu, KMS Annual Meeting, Seoul, South Korea.
    • When can a large Kr-free graph be homomorphic to a small one?
18. October 27, 2023: Dongyeap Kang, KMS Annual Meeting, Seoul, South Korea.
    • Thresholds for Latin squares and Steiner triple systems: Bounds within a logarithmic factor
19. October 26, 2023: Zixiang Xu, Combinatorics seminar, Shandong Univ, Qingdao, China.
    • An extremal problem on k-neighborly family of boxes
20. October 26, 2023: Yisai Xue, The 8th Qilu Youth Forum, Shandong Univ, Qingdao, China.
    • On the stability of chromatic thresholds
21. October 26, 2023: Jun Gao, The 8th Qilu Youth Forum, Qingdao, China.
    • Many Hamiltonian subsets in large graphs with given density
22. October 25, 2023: Suyun Jiang, The 8th Qilu Youth Forum, Shandong Univ, Jinan, China.
    • Generalized Ramsey-Turán problem for cliques
23. October 25, 2023: Zixiang Xu, Combinatorics seminar, Shandong Univ, Jinan, China.
    • Structures of ultra-Kr-free graphs
24. October 25, 2023: Yisai Xue, The 8th Qilu Youth Forum, Shandong Univ, Jinan, China.
    • The generalized Turán number of generalized theta graphs
25. October 25, 2023: Jun Gao, The 8th Qilu Youth Forum, Jinan, China.
    • Extremal number of graphs from geometric shapes
26. October 21, 2023: Ruonan Li, Developments in Combinatorics Workshop, Jeju, South Korea.
    • Properly colored spanning trees in edge-colored complete graphs without monochromatic triangles
27. October 20, 2023: Zixiang Xu, 3rd Developments in Combinatorics Workshop, Jeju, South Korea.
    • Combinatorial proof of Graham-Pollak Theorem
28. September 23, 2023: Hong Liu, Indonesia-Japan Conference on Discrete and Computational Geometry, Graph theory, Bali, Indonesia.
    • Turán problem for graphs from geometric shapes
29. September 18, 2023: Jun Gao, Combinatorics seminar, Chinese Academy of Sciences, Beijing, China.
    • The Erdos distinct subset sums problem in a modular setting
30. 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
31. September 15, 2023: Zixiang Xu, Combinatorics seminar, Nankai Univ, Tianjin, China.
    • On a new variant of the Erdős–Gyárfás problem
32. September 15, 2023: Jun Gao, Combinatorics seminar, Nankai Univ, Tianjin, China.
    • Tight bounds towards a conjecture of Gallai
33. September 13, 2023: Hong Liu, Combinatorics seminar, Nankai Univ, Tianjin, China.
    • Beyond chromatic threshold via (p,q)-theorem, and shpar blow-up phenomenon
34. August 24, 2023: Zixiang Xu, ICIAM 2023, Waseda Univ, Tokyo, Japan.
    • Robust Linear algebra methods and some applications
35. August 24, 2023: Jun Gao, ICIAM 2023, Waseda Univ, Tokyo, Japan.
    • Many Hamiltonian subsets in large graphs with given density
36. August 24, 2023: Hong Liu, ICIAM 2023, Waseda Univ, Tokyo, Japan.
    • Turán problem for graphs from geometric shapes
37. August 19, 2023: Zixiang Xu, Yokohama Workshop on Graph Theory, Yokohama, Japan.
    • An Extremal problem related to Graham-Pollak Theorem
38. August 19, 2023: Hong Liu, Yokohama Workshop on Graph Theory, Yokohama Univ, Yokohama, Japan.
    • Exponential decay of intersection volume and applications
39. August 9, 2023: Dongyeap Kang, KIAS Summer Workshop on Graph Theory, Seoul, South Korea.
    • Hamilton cycles in a random subgraph of uniform Dirac hypergraphs
40. August 7, 2023: Zixiang Xu, Combinatorics seminar, Shandong Univ, Qingdao, China.
    • Theoretical bounds and stability results on set systems
41. July 27, 2023: Zixiang Xu, OSRC 2023 Graph Theory and Combinatorics, Taiyuan, China.
    • Turán number of graphs from geometric shapes
42. July 27, 2023: Hong Liu, OSRC 2023 Graph Theory and Combinatorics, Taiyuan, China.
    • Kissing numbers and spherical codes in high dimensions
43. 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
44. July 11, 2023: Suyun Jiang, Combinatorics seminar, Shandong Univ, Jinan, China.
    • How connectivity affects the extremal number of trees
45. 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
46. June 27, 2023: Hong Liu, Graph theory workshop, Heidelberg Univ, Heidelberg, Germany.
    • Crux and its applications
47. June 13, 2023: Minho Cho, IBS Discrete Math Seminar, Daejeon, South Korea.
    • Strong Erdős-Hajnal property on chordal graphs and its variants
48. June 9, 2023: Hong Liu, Combinatorics seminar, Southern Univ Science and Technology, Shenzhen, China.
    • Kissing numbers and spherical codes in high dimensions
49. June 5, 2023: Jun Gao, Canadian Discrete and Algorithmic Mathematics 2023, Winnipeg, Canada.
    • Some recent results on the Turán numbers of bipartite graphs
50. June 5, 2023: Hong Liu, Combinatorics seminar, Fuzhou Univ, Fuzhou, China.
    • Turán problem for graphs from geometric shapes
51. June 1, 2023: Younjin Kim, 28th KIAS Combinatorics Workshop, Jeju, South Korea.
    • On the extremal problems related to Szemerédi’s theorem
52. June 1, 2023: Stijn Cambie, 28th KIAS Combinatorics Workshop, Jeju, South Korea.
    • On a few problems of Erdős et al. in new settings
53. June 1, 2023: Nika Salia, 28th KIAS Combinatorics Workshop, Jeju, South Korea.
    • Linear three-uniform hypergraphs with no Berge path of given length
54. May 30, 2023: Suyun Jiang, IBS Discrete Math Seminar, Daejeon, South Korea.
    • How connectivity affects the extremal number of trees
55. April 29, 2023: Hyunwoo Lee, 2023 KMS Spring Meeting, Daejeon, South Korea.
    • Covering multigraphs with bipartite graphs
56. April 28, 2023: Younjin Kim, 2023 KMS Spring Meeting, Daejeon, South Korea.
    • On the extremal problems related to Szemerédi’s theorem
57. April 28, 2023: Suyun Jiang, 2023 KMS Spring Meeting, Daejeon, South Korea.
    • How connectivity affects the extremal number of trees
58. April 28, 2023: Jun Gao, 2023 KMS Spring Meeting, Daejeon, South Korea.
    • Many Hamiltonian subsets in large graphs with given density
59. April 28, 2023: Stijn Cambie, 2023 KMS Spring Meeting, Daejeon, South Korea.
    • Maximum total distance of hypergraphs
60. April 19, 2023: Hong Liu, Colloquium, Zhejiang Univ, Hangzhou, China.
    • Sublinear expanders and its applications
61. April 17, 2023: Hong Liu, Combinatorics seminar, Shanghai Univ, Shanghai, China.
    • Sublinear expanders and its applications
62. 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
63. March 30, 2023: Minho Cho, Topology and Combinatorics seminar, Ajou Univ, Suwon, South Korea.
    • Strong Erdős-Hajnal property on chordal graphs and its variants
64. March 22, 2023: Minho Cho, Combinatorics seminar, Hanyang Univ, Seoul, South Korea.
    • Strong Erdős-Hajnal property on chordal graphs and its variants
65. March 21, 2023: Younjin Kim, IBS Discrete Math Seminar, Daejeon, South Korea.
    • Problems on Extremal Combinatorics
66. February 23, 2023: Hong Liu, 27th KIAS Combinatorics Workshop, KIAS, Seoul, South Korea.
    • Bipartite Turán problem from periodic tilings
67. February 18, 2023: Hong Liu, Colloquium, Chinese Academic of Science, Beijing, China.
    • Exponential decay on intersection volume and it applications
68. February 17, 2023: Hong Liu, Combinatorics Seminar, Nankai Univ, Tianjin, China.
    • Mixing vertices and almost expanders
69. February 14, 2023: Stijn Cambie, IBS Discrete Math Seminar, Daejeon, South Korea.
    • Recent progress on the Union-closed conjecture and related
70. February 14, 2023: Hong Liu, Combinatorics Seminar, Shandong Univ, Jinan, China.
    • Mixing vertices and almost expanders
71. January 10, 2023: Zixiang Xu, Invited talk, Shandong University, Jinan, China.
    • Algebraic methods in intersective sets and set systems
72. January 10, 2023: Jun Gao, Invited talk, Shandong University, Jinan, China.
    • Counting the number of (k-1)-cliques in a k-critical graph
73. January 3, 2023: Zixiang Xu, Invited talk, Taiyuan University of Technology, Taiyuan, China.
    • Theoretical bounds and stability results on set systems

2022

74. December 28, 2022: Stijn Cambie, IBS Discrete Math Seminar, Daejeon, South Korea.
    • The 69-conjecture and more surprises on the number of independent sets
75. December 20, 2022: Stijn Cambie, seminar at KULAK, Kortrijk, Belgium.
    • The 69-conjecture and more surprises on the number of independent sets
76. December 17, 2022: Stijn Cambie, European Mathematical Cup, UA, Antwerp, Belgium.
    • Background, strategies and examples; Recent Research in mathematics
77. 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
78. December 2, 2022: Hong Liu, Combinatorics seminar at Beijing Institute of Technology, Beijing, China.
    • Rainbow cycles in properly edge-colored graphs
79. November 16, 2022: Stijn Cambie, Topology and Combinatorics seminar at Ajou Univ., Suwon, South Korea.
    • Packing Variants of Colourings
80. November 11, 2022: Hong Liu, Combinatorics seminar at Fuzhou Univ., Fuzhou, China.
    • Ramsey goodness of cycles
81. November 2, 2022: Hong Liu, Combinatorics seminar at Nankai Univ., Tianjin, China.
    • Crux of a graph and its applications
82. October 22, 2022: Zixiang Xu, Forum on Extremal Combinatorics and Information Theory at Soochow Univ., Suzhou, China.
    • Intersective sets over abelian groups
83. October 19, 2022: Stijn Cambie, KMS Fall Meeting, Seoul, South Korea.
    • The importance of the empty set in Katona’s Circle Method and implications
84. 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
85. September 30, 2022: Zixiang Xu, Combinatorics Workshop 2022 at GIST, Gwangju, South Korea.
    • Intersective sets over abelian groups
86. September 30, 2022: Stijn Cambie, Combinatorics Workshop 2022 at GIST, Gwangju, South Korea.
    • On entropy of graphs
87. September 30, 2022: Jun Gao, Combinatorics Workshop 2022 at GIST, Gwangju, South Korea.
    • A unified proof of conjectures on cycle lengths in graphs
88. September 28, 2022: Joonkyung Lee, Graph Limits, Nonparametric Models, and Estimation at Simons Institute, Berkeley, US.
    • Recent developments on graph norms
89. August 19, 2022: Joonkyung Lee, Topology and Combinatorics seminar at Ajou Univ., Suwon, South Korea.
    • Ramsey multiplicity and common graphs
90. June 30, 2022: Hong Liu, Third Southwestern German Workshop on Graph Theory, Heidelberg, Germany.
    • What do we get from crux?
91. May 27, 2022: Stijn Cambie, Combinatorics Special Session I (Graph Theory) at KSIAM 2022 Spring Conference, Daejeon, South Korea.
    • Regular Cereceda’s Conjecture
92. May 23, 2022: Stijn Cambie, IBS Discrete Math Seminar, Daejeon, South Korea.
    • The precise diameter of reconfiguration graphs
93. May 6, 2022: Hong Liu, Combinatorics seminar at Fuzhou Univ., Fuzhou, China.
    • Exponential decay of intersection volume and applications
94. April 29, 2022: Hong Liu, Invited lecture at 2022 KMS Spring Meeting, Seoul, South Korea.
    • Exponential decay of intersection volume and applications
95. April 15, 2022: Hong Liu, Georgia Tech Combinatorics Seminar, Atlanta, USA.
    • Exponential decay of intersection volume and applications