On Hopf algebras with triangular decomposition

Abstract

In this survey, we first review some known results on the representation theory of algebras with triangular decomposition, including the classification of the simple modules. We then discuss a recipe to construct Hopf algebras with triangular decomposition. Finally, we extend to these Hopf algebras the main results of arXiv:1612.09220 regarding projective modules over Drinfeld doubles of bosonizations of Nichols algebras and groups.

v2: I corrected an important typo in Equation (4.5). Unfortunately, this is yet in the printed version. I also added details in the proof of Lemma 4.3