Deformations of link homologies

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• Paul Wedrich (Cambridge)
• Friday 06 February 2015, 15:00-16:00
• MR13.

If you have a question about this talk, please contact Joe Waldron.

I will start by explaining how deformations help to answer two important questions about the family of (colored) sl(N) link homology theories: What relations exist between them? What geometric information about links do they contain? I will recall Bar-Natan and Morrison’s version of Lee’s deformation of Khovanov homology and sketch how it generalizes to the case of colored sl(N) link homology. Finally, I will state a decomposition theorem for deformed colored sl(N) link homologies which leads to new spectral sequences between various type A link homologies and concordance invariants in the spirit of Rasmussen’s s-invariant. Joint work with David Rose.

This talk is part of the Junior Geometry Seminar series.

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