Organizer: Lynn Heller (HIMIS), Omar Kidwai（CUHK）Abstract:The CUHK–HIMIS Geometry Workshop, to be held from 6 to 8 November 2026, will bring together researchers from CUHK and HIMIS working in geometry and related fields. The workshop aims to encourage the exchange of ideas and strengthen research collaboration between the two institutions.
Speaker：Lutian Zhao (Kavli IPMU, University of Tokyo)Time:November 4, 2026, 2:00–3:00 pmVenue:HIMIS 7A1Title:What is Gopakumar-Vafa invariantAbstract:Gopakumar–Vafa invariants are integer-valued curve-counting invariants of Calabi–Yau threefolds. In this talk, I will introduce their geometric in
Speaker:Lifeng Yan (HIMIS)Time:October 29 (Thu), 2026, 2:30-3:30 pmVenue:HIMIS 7A1Title:From String Matching to Heterogeneous Computing: Accelerating Sequence Alignment at ScaleAbstract：Sequence alignment can be viewed as string matching with substitutions, insertions, and deletions, ye
Speaker:Ingrid Irmer (SUSTech)Time: October 28 (Wed), 2026, 4:00-5:00 pmLocation: HIMIS 7A1Title: Topological Morse functions and Moduli spaceAbstract:Topological Morse functions are continuous functions whose critical points satisfy a nondegeneracy property similar to their smooth count
Speaker:Yi Wang (HIMIS)Time:October 21 (Wed), 2026, 2:30-3:30 pmLocation:HIMIS 7A1Title:Symplectic rigidity: lower bounds for Hamiltonian fixed points and Lagrangian intersectionsAbstract:I will trace the development of some symplectic rigidity results, from Poincaré’
Speaker:Qijun Yan (HIMIS)Time:October 14 (Wed), 2026, 2:30-3:30 pmLocation:HIMIS 7A1Title:On the K₁-level Hecke algebra of GLₙ(ℚₚ)Abstract:Double-coset Hecke algebras are fundamental tools in the representation theory of p-adic groups and the theory of automorphic f
Title: Radon Measure-Valued Solutions and Hypersonic Flows Past BodiesSpeaker: Prof. Hairong Yuan, School of Mathematical Sciences, East China Normal UniversityTime & Location:Oct. 18th, 10:00-11:00am; HIMIS 7A1Abstract:In this talk, we introduce Radon measure-valued solutions to the compr
Speaker:Stavros Garoufalidis (SUSTech)Time:September 23 (Wed), 2026, 4:00-5:00 pmLocation:HIMIS 7A1Title:Can you compute the genus of a knot?Abstract:A knot is a circle in 3-space, allowed to move as long as it does not intersect itself. Every knot bounds an (oriented surface), and the smallest genu
Speaker:Lynn Heller (HIMIS)Time:September 23 (Wed), 2026, 2:30–3:30 pmLocation:HIMIS 7A1Title:Surfaces and Some Unexpected ConnectionsAbstract:In this talk, I’ll give an introduction to my research through some of my favourite surfaces and the questions behind them. I
Speaker：Matthew Burfitt (HIMIS)Time:September 16 (Wed), 2026, 2:30–3:30 pmLocation:HIMIS 7A1Title:On homology theories of digraphs and quivers and their computabilityAbstract:This talk will be presented with a general scientific audience in mind. No background in topology is required.
Speaker：Promit Kundu (ShanghaiTech University)Time：September 21, 2026, 3:00–4:00 pmTitle：Fixed-Point Loci of Moduli Spaces of Sheaves on Toric OrbifoldsAbstract：I will present a combinatorial description of torus-equivariant sheaves on smooth projective toric orbifolds and apply it to fixed loc
Speaker:Sergey Galkin (PUC-Rio)Time:September 9, 2026, 2:30–3:30 pmVenue:HIMIS 7A1Abstract:In the first 20–30 minutes of the talk, I will revisit my presentation at the NeurIPS 2025 MATH+AI workshop, with a broad audience in mind. I will then discuss further MATH+AI topics
Geometry seminar - Surgeries on knots and tight contact structuresSpeaker:Shunyu Wan (Georgia Institute of Technology)Time: August 10, 3-4pmLocation: HIMIS 7A1Title: Surgeries on knots and tight contact structuresAbstract: The existence and nonexistence of tight contact structures on 3-manifol
Speaker:Zhen Gao (University of Augsburg)Time: June 16th (Tue), 3 - 4pmLocation:HIMIS 7A5Title: Koszul duality and Milnor fibresAbstract: A certain Koszul duality pattern in symplectic geometry around several types of Milnor fibres has been discovered by Lekili et al. In this talk, I will revi
Speaker:Ali Ghalavand (HIMIS)Time:June 3rd (Wed), 3 - 4pmLocation:HIMIS 7A1Title:Some Topics in Graph TheoryAbstract:This talk covers our recent solutions to several open problems involving metric dimensions (the smallest size of a resolving set), decycling numbers (the