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Low-Dimensional Topology

Low-Dimensional Session Talk #5.1

Subevent of Low-Dimensional Session #5

HUMB 144

Skein Modules for 3-Manifolds and Their Structure | Rhea Bakshi

Times: 2025 Aug 14 from 08:30AM to 08:55AM (Central Time (US & Canada))

Webinar link: Icon: video Webinar

Skein Modules for 3-Manifolds and Their Structure

Rhea Bakshi ⟨rheapalak@ucsb.edu⟩

Abstract:

Skein modules were introduced by Przytycki and independently by Turaev as generalizations of the polynomial link invariants in the 3-sphere to arbitrary 3-manifolds. Among these, the Kauffman bracket skein module (KBSM) has been studied most extensively. Recently, Gunningham, Jordan, and Safronov demonstrated that for any closed 3-manifold, the KBSM is finite-dimensional over $\mathbb Q(A)$; however, this finiteness does not extend to the KBSM over $\mathbb Z[A^{\pm 1}]$. Moreover, computing the KBSM of a 3-manifold remains a notoriously challenging problem, especially over this ring. In this talk, we will survey these developments and explore several open questions concerning the structure of the KBSM over $\mathbb Z[A^{\pm 1}]$.

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