Wed, 18 Feb 2026
12:45
TCC VC

Spindles, orbi-bundles, and Seifert fibrations

Jaeha Park
(Imperial College London)
Abstract

 Is it possible to define gauge theories on singular spaces? The answer to this question is emphatically yes​, and the prime example of such spaces are two-dimensional orbifolds known as spindles​. First, I will introduce spindles from a symplectic geometry perspective. Then I will discuss the notion of orbi-bundles, which allows one to consistently describe regular gauge fields/spinors on orbifolds.

State-of-the-Art and Tomorrow’s Challenges and Opportunities in Constitutive Modeling of Soft Biological Tissues with a Focus on Arterial, Cardiac and Brain Biomechanics
 Goriely, A Avril, S Holzapfel, G Kuhl, E Nordsletten, D Ogden, R Acta Biomaterialia

Short Stories 2

Ben Walker uses AI. His research field is AI. What's his take on its mathematical talents?

Solving, tracking and stopping streaming linear inverse problems
 Pritchard, N Patel, V Inverse Problems volume 40 issue 8 (01 Aug 2024)
Mean-ρ portfolio selection and ρ-arbitrage for coherent risk measures
 Herdegen, M Khan, N Mathematical Finance volume 32 issue 1 226-272 (01 Jan 2022)
p-Arbitrage and p-Consistent Pricing for Star-Shaped Risk Measures
 Herdegen, M Khan, N Mathematics of Operations Research volume 50 issue 2 1555-1583 (01 May 2025)
Exact Characterization of Aggregate Flexibility via Generalized Polymatroids
 Mukhi, K Loho, G Abate, A IEEE Transactions on Smart Grid (01 Jan 2026)
Subscribe to