Diagrammatic morphisms between indecomposable modules of ${\bar{U}}_q({\mathfrak{sl}}_2)$

Abstract

We give diagrammatic formulae for morphisms between indecomposable representations of ${\bar{U}}_q({\mathfrak{sl}}_2)$ appearing in the decomposition of ${\mathbb{C}}^{\otimes 2n}$, including projections and second endomorphisms on projective indecomposable representations.

arXiv admin note: text overlap with arXiv:1703.00271