A finite-dimensional Lie algebra arising from a Nichols algebra of diagonal type (rank 2)

Nicolás Andruskiewitsch, Iván Angiono, Fiorela Rossi Bertone

Let ${\mathcal{B}}_{\mathfrak{q}}$ be a finite-dimensional Nichols algebra of diagonal type corresponding to a matrix $\mathfrak{q}\in {\mathbf{k}}^{\theta \times \theta }$, where $\mathbf{k}$ is…