Knot Homology Theories


Roland van der Veen and some of his MSc and PhD students have a reading group on Knot Homology Theories. We plan to study mainly Khovanov homology and knot Floer homology. Of course, any other topological or knot-theoretical discussion is welcome!

We plan to meet on Tuesdays at 15:00. Everyone is welcome to join! For more information about the seminar please see the description below or contact Jorge

Schedule

Upcoming talks


Jeffrey Weenink: Traces and skein modules.


Past talks


Kevin van Helder: Gradings and a TQFT. Kevin's slides.


Jeffrey Weenink: Planar diagrams and tangle compositions. Jeffrey's notes.


Aarnout Los: Invariance under the Reidemeister move R2. Aarnout's drawings.


Jorge Becerra: Khovanov homology à la Bar-Natan. Jorge's notes.


Jeffrey Weenink: Functoriality of Khovanov homology. Jeffrey's notes.


Oscar Koster: A long exact sequence for Khovanov homology.


Jorge Becerra: Isotopy invariance of Khovanov homology II.  Jorge's notes.


Jorge Becerra: Isotopy invariance of Khovanov homology I. Jorge's notes and Mathematica notebook.


        Jeffrey Weenink: The Khovanov chain complex of cobordisms


       Albert Šilvans: Observations on Almost OU Tangles . Slides and videos.

Description

References

Our two main references will be


Some other complementary references are


Depending on the interest of the audience, some more advanced topics may include

Upper left hand side picture: cobordism between two resolutions of a tangle diagram.Upper right hand side picture: doubly pointed Heegaard diagram (blue and red) for the trefoil (green).