Addendum to Olivier Schiffmann, "Drinfeld realization of the elliptic Hall algebra"
Abstract
In S O. Schiffmann gave a presentation of the Drinfel'd double of the elliptic Hall algebra which is similar in spirit to Drinfel'd's new realization of quantum affine algebras. Using this result together with a part of his proof we can provide such a description for the elliptic Hall algebra.
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