University of Sydney
School of Mathematics and Statistics
Université de Savoie
Quasi-Hopf algebras and deformations of
Friday November 16, 12-1pm,
We start with the notion of Hopf and quasi-Hopf
algebras. We first present a description of the
different algebraic structures one can obtain from a
Lie algebra (typically sl(N) or affine sl(N)). Apart
from the known elliptic-type algebras, the deformed
double Yangians appear in the scheme.
We then focus on these latter and emphasize their
quasi-triangular quasi-Hopf structure. For such a
purpose, the relevant approch appears to be the
construction of a Drinfeld twist.