Conference (July 17-21)
(Updated as of June 24, 2026)
Important notes:
| 1. | This Conference will be held in face-to-face mode. |
| 2. | Unauthorized recording of any session is prohibited. |
| 3. | Please obtain the consent from the speaker concerned for any adaptation/sharing of his/her presentation materials. |
| Should you have further enquiries, please feel free to contact the secretariat by email at ias2026g2t2@ust.hk. | |
July 17, 2026 (Fri)
Time
Event
| 08:30 - 09:00 |
Registration |
|
| 09:00 - 09:30 |
Opening G2T2 Conference |
|
|
Plenary Talks Session Chair: Roman NEDELA (University of West Bohemia in Pilsen) |
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| 09:30 - 10:20 |
Talk#071701 - Long Cycles in Vertex Transitive Digraphs [Abstract] Bojan MOHAR (Simon Fraser University; University of Ljubljana) |
|
| 10:20 - 10:40 |
Coffee Break (Venue: Lobby, G/F) |
|
| 10:40 - 11:30 |
Talk#071702 - Bounding Hamilton Cycles in Polytopal Maps [Abstract] Martin ŠKOVIERA (Comenius University) |
|
| 11:30 - 11:45 |
Conference Photo Taking (Venue: Lobby, G/F) |
|
| 11:45 - 14:00 |
Lunch |
|
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Plenary Talks Session Chair: János PACH (Alfréd Rényi Institute of Mathematics) |
||
| 14:00 - 14:50 |
Talk#071703 - Eulerian Orientations [Abstract] Brendan McKAY (The Australian National University) |
|
| 14:50 - 15:10 |
Coffee Break (Venue: Lobby, G/F) |
|
| 15:10 - 16:00 |
Talk#071704 - Rich Nowhere-zero Flows [Abstract] Edita MÁČAJOVÁ (Comenius University) |
|
| 16:00 - 16:20 |
Coffee Break (Venue: Lobby, G/F) |
|
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Plenary Talks Session Chair: Andrei RAIGORODSKII (Moscow Institute of Physics and Technology) |
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| 16:20 - 17:10 |
Talk#071705 - Extensions of the Carlitz-McConnel and Blokhuis-Sziklai Theorems [Abstract] Chi Hoi Yip (Georgia Institute of Technology) |
|
| 17:10 - 17:15 |
Short Break |
|
| 17:15 - 18:05 |
Talk#071706 - The Finite k-set Homogeneous Graphs [Abstract] Jinxin ZHOU (Beijing Jiaotong University) |
|
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Contributed Talks Session Chair: Kan HU (Zhejiang Ocean University) |
||
| 18:05 - 18:30 |
Talk#071707 - Isomorphic Factorizations of the Complete Graphs into Cayley Graphs on CI-groups [Abstract] Huye CHEN (Guangxi University) |
|
| 18:30 - 18:55 |
Talk#071708 - The Dunkl–Watanabe Duality [Abstract] Xiaoye LIANG (Anhui Jianzhu University) |
|
| 18:55 - 19:20 |
Talk#071709 - NPA Hierarchy for Quantum Isomorphism and Homomorphism Indistinguishability [Abstract] Peter ZEMAN (Charles University) |
|
| 19:20 - 20:30 |
Dinner |
|
| 20:30 Onwards |
Free Discussion |
|
July 18, 2026 (Sat)
Time
Event
|
Plenary Talks Session Chair: Jack KOOLEN (University of Science and Technology of China) |
||
| 09:30 - 10:20 |
Talk#071801 - Spectral Supersaturation for Color-critical Graphs [Abstract] Jie MA (University of Science and Technology of China; Tsinghua University) |
|
| 10:20 - 10:40 |
Coffee Break (Venue: Lobby, G/F) |
|
| 10:40 - 11:30 |
Talk#071802 - Extremal Eigenvalues with Respect to Graph Minors [Abstract] Huiqiu LIN (East China University of Science and Technology) |
|
| 11:30 - 14:00 |
Lunch |
|
|
Plenary Talks Session Chair: Bojan MOHAR (Simon Fraser University; University of Ljubljana) |
||
| 14:00 - 14:50 |
Talk#071803 - Graphs and Combinatorial Geometry [Abstract] Andrei RAIGORODSKII (Moscow Institute of Physics and Technology) |
|
| 14:50 - 15:10 |
Coffee Break (Venue: Lobby, G/F) |
|
| 15:10 - 16:00 |
Talk#071804 - The Regular Two-graph on 276 Vertices, Revisited [Abstract] Jack KOOLEN (University of Science and Technology of China) |
|
| 16:00 - 16:20 |
Coffee Break (Venue: Lobby, G/F) |
|
|
Plenary Talks Session Chair: Brendan McKAY (The Australian National University) |
||
| 16:20 - 17:10 |
Talk#071805 - Maximum Two-distance Sets in Hamming, Johnson and Euclidean Space [Abstract] Wei-Hsuan YU (National Central University) |
|
| 17:10 - 17:15 |
Short Break |
|
| 17:15 - 18:05 |
Talk#071806 - The Four Color Theorem: Generalizations and Faster Algorithms [Abstract] Kenichi KAWARABAYASHI (National Institute of Informatics, Japan; The University of Tokyo) |
|
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Contributed Talks Session Chair: Huye CHEN (Guangxi University) |
||
| 18:05 - 18:30 |
Talk#071807 - A Generalization of Ramanujan’s Sum Over Finite Groups [Abstract] Monu KADYAN (Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences) |
|
| 18:30 - 18:55 |
Talk#071808 - Cylindrical Set Conjecture [Abstract] Gábor SOMLAI (The University of Melbourne) |
|
| 18:55 - 19:20 |
Talk#071809 - Tiles of Cyclic Groups [Abstract] Gábor SOMLAI (The University of Melbourne) |
|
| 19:20 - 22:00 |
Dinner |
|
July 19, 2026 (Sun)
Time
Event
|
No Talks |
July 20, 2026 (Mon)
Time
Event
|
Plenary Talks Session Chair: Marston CONDER (University of Auckland) |
||
| 09:30 - 10:20 |
Talk#072001 - Tiling the Sphere with Regular Polygons [Abstract] Roman NEDELA (University of West Bohemia in Pilsen) |
|
| 10:20 - 10:40 |
Coffee Break (Venue: Lobby, G/F) |
|
| 10:40 - 11:30 |
Talk#072002 - Hilbert’s 18th Problem and Undecidability of Translational Tiling [Abstract] Chao YANG (Guangdong University of Foreign Studies) |
|
| 11:30 - 14:00 |
Lunch |
|
|
Plenary Talks Session Chair: Gábor TADOR (Alfréd Rényi Institute of Mathematics) |
||
| 14:00 - 14:50 |
Talk#072003 - Geometry of Knots and Links in the Spaces of Constant Curvature [Abstract] Alexander MEDNYKH (Sobolev Institute of Mathematics, Novosibirsk State University) |
|
| 14:50 - 15:10 |
Coffee Break (Venue: Lobby, G/F) |
|
| 15:10 - 16:00 |
Talk#072004 - On the Structures of Tiling Sets in Finite Abelian Groups [Abstract] Tao ZHANG (Xidian University) |
|
| 16:00 - 16:20 |
Coffee Break (Venue: Lobby, G/F) |
|
|
Plenary Talks Session Chair: Rade ŽIVALJEVIĆ (Serbian Academy of Sciences and Arts, National Institute of the Republic of Serbia) |
||
| 16:20 - 17:10 |
Talk#072005 - Graphs, Symmetries and Orderings in Dynamical Systems [Abstract] Petr STEHLÍK (University of West Bohemia in Pilsen) |
|
| 17:10 - 17:15 |
Short Break |
|
| 17:15 - 18:05 |
Talk#072006 - Non-orientable Regular Hypermaps of Arbitrary Hyperbolic Type [Abstract] Jozef ŠIRÁŇ (Slovak University of Technology) |
|
|
Contributed Talks Session Chair: Young Soo KWON (Yeungnam University) |
||
| 18:05 - 18:30 |
Talk#072007 - Cyclic Complementary Extensions of Groups and Skew Morphisms [Abstract] Kan HU (Zhejiang Ocean University) |
|
| 18:30 - 18:55 |
Talk#072008 - Skew Braces with No Proper Left Ideals [Abstract] Cindy (Sin Yi) TSANG (Ochanomizu University) |
|
| 18:55 - 19:20 |
Talk#072009 - Laplace Polynomials for the Moebius Strip and Klein Bottle [Abstract] Ilya MEDNYKH (Sobolev Institute of Mathematics, Novosibirsk State University) |
|
| 19:20 - 20:30 |
Dinner |
|
| 20:30 Onwards |
Free Discussion |
|
July 21, 2026 (Tue)
Time
Event
|
Plenary Talks Session Chair: Victor CHEPOI (Aix-Marseille Université) |
||
| 09:30 - 10:20 |
Talk#072101 - Symmetric Structures in the Bruhat Order [Abstract] Yibo GAO (Peking University) |
|
| 10:20 - 10:40 |
Coffee Break (Venue: Lobby, G/F) |
|
| 10:40 - 11:30 |
Talk#072102 - Counting Rainbow Triangles via Entropy Method [Abstract] Ting-Wei CHAO (Massachusetts Institute of Technology) |
|
| 11:30 - 14:00 |
Lunch |
|
|
Plenary Talks Session Chair: Yaokun WU (Shanghai Jiaotong University) |
||
| 14:00 - 14:50 |
Talk#072103 - Ample Sets in Cartesian Products [Abstract] Victor CHEPOI (Aix-Marseille Université) |
|
| 14:50 - 15:10 |
Coffee Break (Venue: Lobby, G/F) |
|
| 15:10 - 16:00 |
Talk#072104 - Equiangular Lines, Distance-regular Covers of Complete Graphs, and Roux Schemes [Abstract] Akihiro MUNEMASA (Tohoku University) |
|
| 16:00 - 16:20 |
Coffee Break (Venue: Lobby, G/F) |
|
|
Plenary Talks Session Chair: Min YAN (HKUST) |
||
| 16:20 - 17:10 |
Talk#072105 - Combinatorics, Geometry, and Topology of Bier Spheres [Abstract] Rade ŽIVALJEVIĆ (Serbian Academy of Sciences and Arts, National Institute of the Republic of Serbia) |
|
| 17:10 - 17:15 |
Short Break |
|
| 17:15 - 18:05 |
Talk#072106 - An Eventown Result for Permutations [Abstract] Nathan LINDZEY (The University of Memphis) |
|
|
Special Session |
||
| 18:05 - 18:30 |
G2-2027 |
|
| 18:30 - 20:30 |
Dinner |
|
| 20:30 Onwards |
Free Discussion |
|