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On some generalizations of the category of Soergel bimodules

Anne-Laure Thiel
Stuttgart University
Luigi Stasi Seminar Room, ICTP
Thursday, January 17, 2019 - 14:30

The category of Soergel bimodules plays an essential role in (higher) representation theory and for the construction of homological invariants in knot theory. The aim of this talk is to present a generalization of Soergel category attached to a Coxeter group of type $A_2$. While Soergel category counts a generating bimodule per simple reflection, this generalization is obtained by taking one generator per reflection.

I will give a complete description of this category through a classification of its indecomposable objects and study its split Grothendieck ring. This gives rise to an algebra which is a quotient of the corresponding affine Hecke algebra of type $A_2$, that can be presented by generators and relations.
This is joint work with Thomas Gobet.

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