English

Real roots in the root system $\mathsf{T}_{2,p,q}$

Combinatorics 2023-08-21 v3

Abstract

Motivated by the recent advances in the categorification of the cluster structure on the coordinate rings of Grassmannians of kk-subspaces in nn-space, we investigate a particular construction of root systems of type T2,p,q\mathsf{T}_{2,p,q}, including the type En\mathsf{E}_n. This construction generalizes Manin's ``hyperbolic construction'' of E8\mathsf{E}_8 and reveals a lot of otherwise hidden regularities in this family of root systems.

Keywords

Cite

@article{arxiv.2101.03119,
  title  = {Real roots in the root system $\mathsf{T}_{2,p,q}$},
  author = {Karin Baur and Jian-Rong Li and Andrei Smolensky},
  journal= {arXiv preprint arXiv:2101.03119},
  year   = {2023}
}
R2 v1 2026-06-23T21:55:33.868Z