A Diagrammatic Temperley-Lieb Categorification

Details A Diagrammatic Temperley-Lieb Categorification A Diagrammatic Temperley-Lieb Categorification

2010-03-17

arxiv.org/abs/1003.3416v1

Mathematics

Representation Theory

Scientific paper

The monoidal category of Soergel bimodules categorifies the Hecke algebra of a finite Weyl group. In the case of the symmetric group, morphisms in this category can be drawn as graphs in the plane. We define a quotient category, also given in terms of planar graphs, which categorifies the Temperley-Lieb algebra. Certain ideals appearing in this quotient are related both to the 1-skeleton of the Coxeter complex and to the topology of 2D cobordisms. We demonstrate how further subquotients of this category will categorify the cell modules of the Temperley-Lieb algebra.

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