KnotJob is a Java programme designed to calculate knot invariants centered around Khovanov homology. The current version () can calculate

- even and odd Khovanov homology.
- Rasmussen's
*S*-invariants for for fields up to characteristic 211 and an integral version. - Lipshitz-Sarkar's refinements of the mod 2
*S*-invariant for first and second Steenrod squares (even and odd). - The second Steenrod Square for the Lipshitz-Sarkar stable Khovanov homotopy type, and an odd version.
- The Bar Natan-Lee-Turner spectral sequence for fields up to characteristic 211.
- The Alexander and Jones polynomials.
- The signature and the determinant.

I used to have more older versions on this website, but have removed them now. This includes SKnotJob and TKnotJob, which are incorporated into the latest version.

Last modified: 01.09.2022