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arXiv · 2603.09537

Coproduct of modified Drinfeld-Cartan series for Yangians and quantum affine algebras in type A

Jérôme Milot
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Abstract

We give explicit formulas for the coproducts of modified Drinfeld-Cartan generating series for the Yangian in type $A$ and for the quantum affine algebras in the particular type $A_2$. As an auxiliary result of the latter, we give an explicit presentation of positive prefundamental representations of the quantum affine algebra in the particular type $A_2$

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Jérôme Milot. 2026-03-10. Coproduct of modified Drinfeld-Cartan series for Yangians and quantum affine algebras in type A. https://arxiv.org/abs/2603.09537

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