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19972004
most citedOn sl(N) and sl(M|N) integrable open spin chains

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math.QA2000

On the Quasi-Hopf structure of deformed double Yangians

D. Arnaudon, J. Avan, L. Frappat +2

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 structur…