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Home » Online Seminar: Invariants of 4-manifolds from Khovanov-Rozansky link homology

Seminar

Online Seminar: Invariants of 4-manifolds from Khovanov-Rozansky link homology May 06, 2020 (10:00 AM PDT - 11:00 AM PDT)
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Location: MSRI: Online/Virtual
Speaker(s) Paul Wedrich (Max-Planck-Institut für Mathematik)
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Ribbon categories are 3-dimensional algebraic structures that control quantum link polynomials and that give rise to 3-manifold invariants known as skein modules. I will describe how to use Khovanov-Rozansky link homology, a categorification of the gl(N) quantum link polynomial, to obtain a 4-dimensional algebraic structure that gives rise to vector space-valued invariants of smooth 4-manifolds. The technical heart of this construction is the newly established functoriality of Khovanov-Rozansky homology in the 3-sphere. Based on joint work with Scott Morrison and Kevin Walker https://arxiv.org/abs/1907.12194

 

Zoom link.

https://msri.zoom.us/s/585445592

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