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arXiv · 2207.12469

Fox-Neuwirth cells, quantum shuffle algebras, and the homology of type-B Artin groups

Anh Trong Nam Hoang
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Abstract

In this paper, we will develop a family of braid representations of Artin groups of type B from braided vector spaces, and identify the homology of these groups with these coefficients with the cohomology of a specific bimodule over a quantum shuffle algebra. As an application, we give a complete characterization of the homology of type-B Artin groups with coefficients in one-dimensional braid representations over a field of characteristic 0. We will also discuss two different approaches to this computation: the first method extends a computation of the homology of braid groups due to Ellenberg-Tran-Westerland by means of induced representation, while the second method involves constructing a cellular stratification for configuration spaces of the punctured complex plane.

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BibTeXRIS

Anh Trong Nam Hoang. 2022-07-25. Fox-Neuwirth cells, quantum shuffle algebras, and the homology of type-B Artin groups. https://arxiv.org/abs/2207.12469

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