
Journal of Lie Theory 28 (2018), No. 3, 673694 Copyright Heldermann Verlag 2018 Principal Subspaces for Double Yangian DY(sl_{2}) Slaven Kozic School of Mathematics and Statistics, University of Sydney, Sydney, NSW 2006, Australia and: Department of Mathematics, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia kslaven@math.hr [Abstractpdf] We consider the realization of level $1$ infinitedimensional modules for the double Yangian DY$({\frak s}{\frak l}_2)$ found by K. Iohara. We use the corresponding vertex operators to generate a family of nonlocal $h$vertex algebras $W_N$, $N\in\mathbb{Z}_{\ge0}$. Finally, we construct combinatorial bases of $W_N$ and establish a connection with the sum side of the RogersRamanujan identity. Keywords: Combinatorial basis, double Yangian, principal subspace, quantum vertex algebra. MSC: 17B37, 17B69 [ Fulltextpdf (187 KB)] for subscribers only. 