2 papers
math.GT2026
Some link homologies in
William Rushworth
We introduce extensions of Khovanov homology and the Lee and Bar-Natan spectral sequences for links in . These extensions are distinct to those previously defined…
math.GT2025
On knots that divide ribbon knotted surfaces
Hans U. Boden, Ceyhun Elmacioglu, Anshul Guha +4
We define a knot to be half ribbon if it is the cross-section of a ribbon 2-knot, and observe that ribbon implies half ribbon implies slice. We introduce the half ribbon genus of a…