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math.QA2023
A braid group action on an -category for zigzag algebras
Benjamin Cooper, You Qi, Joshua Sussan
We construct differential graded enhancements of the zigzag algebras which were used by Khovanov, Seidel and Thomas to produce categorical braid group actions. These enhancements a…
math.QA2020
Evaluating thin flat surfaces
Mikhail Khovanov, You Qi, Lev Rozansky
We consider recognizable evaluations for a suitable category of oriented two-dimensional cobordisms with corners between finite unions of intervals. We call such cobordisms thin fl…