U_{q}(sl_{2}) at fourth root of unity
arXiv:math/9912185
Abstract
In this paper, we study finite dimensional quotients of the Hopf algebra U_{q}(sl_{2}) at fourth root of unity. We give explicitly all the corresponding automorphisms, real forms and idempotents.
24 pages, talk presented by Daniel Kastler at the conference "Analysis on infinite-dimensional Lie groups and algebras", Marseille, September 1997