Showing math.GTShow all
2 papers · 1 filter
math.GT2026
Rationally Null-homologous Floer Simple Knot
Zhaojun Chen
We prove that every rationally null-homologous Floer simple knot in a closed, oriented, irreducible three-manifold with nonzero Thurston norm is unknotted. The proof combines a cut…
math.GT2025
Second-to-Top Term of \hat{HFK} of Closed 3-Braids
Zhaojun Chen
In this paper, we use the skein exact sequence and other techniques to compute the second-to-top term of HFK of closed 3-braids. We do it case-by-case according to Xu's classificat…