6-28【苏桃】Log-concavity of invariants from Legendrian knot theory and character varieties

发布时间:2024-05-28来源:几何与物理研究中心中文网页浏览次数:70

报告人:苏桃(北京雁栖湖应用数学研究院)

时间:2024年6月28日 10:00-11:00

地点:物质科研楼C1124


  

Basing on examples, we propose a conjecture on the log-concavity of ruling polynomials (Legendrian analogue of Jones polynomials) for Legendrian links. In the case of Legendrian torus knots, we prove the conjecture via a connection to the HOMFLY-PT polynomials. Moreover, we explain some algebraic geometry behind via some 'BPS calculus', in the case of Legendrian links arising from plane algebraic curve singularities. Finally, there is a natural generalization of the conjecture to character varieties. Based on work in progress.