Quantum Topology Seminar
Roman Aranda
Binghamton University
L-invariant for spun knots
Abstract: One can think of trisections of 4-manifolds as the higher dimensional analog of Heegaard splittings in dimension 3.
Inspired by the notion of distance for links in $S^3$, Blair, Campisi, Taylor, and Tomova introduced the L-invariant in 2020.
This new invariant is a measure of complexity for embedded surfaces in $S^4.$
This talk will describe estimates for the L-invariant for spun knots in $S^4.$
This talk is based on joint work with Scott A Taylor, Cindy Zhang, and Puttipong Pongtanapaisan.
Thursday April 14, 2022 at 12:00 PM in Zoom