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Let g be a complex, semisimple Lie algebra. Drinfeld showed that the quantum loop algebra U~(Lg) of g degenerates to the Yangian Y~(g). We strengthen this result by constructing an explicit algebra ho...
On the Quasi-Hopf structure of deformed double Yangians
Quasi-Hopf structure deformed double Yangians
2010/10/29
We construct universal twists connecting the centrally extended double Yangian DY(sl(2))_c with deformed double Yangians DY_r(sl(2))_c, thereby establishing the quasi-Hopf structures of the latter.