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math.AT2020
Constructing categorical idempotents
Matthew Hogancamp
We give a general construction of categorical idempotents which recovers the categorified Jones-Wenzl projectors, categorified Young symmetrizers, and other constructions as specia…
math.GT2020
Derived traces of Soergel categories
Eugene Gorsky, Matthew Hogancamp, Paul Wedrich
We study two kinds of categorical traces of (monoidal) dg categories, with particular interest in categories of Soergel bimodules. First, we explicitly compute the usual Hochschild…