Principal subspaces for the affine Lie algebras in types , and
arXiv:1902.10794 · doi:10.1007/s10801-022-01146-x
Abstract
We consider the principal subspaces of certain level integrable highest weight modules and generalized Verma modules for the untwisted affine Lie algebras in types , and . Generalizing the approach of G. Georgiev we construct their quasi-particle bases. We use the bases to derive presentations of the principal subspaces, calculate their character formulae and find some new combinatorial identities.
24 pages, 1 figure, comments are welcome
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