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Module structure on $U(\mathfrak{h})$ for Kac-Moody algebras
Published 6 Jun 2016 in math.RT | (1606.01891v2)
Abstract: Let $\g$ be an arbitrary Kac-Moody algebra with a Cartan sualgebra $\h$. In this paper, we determine the category of $\g$-modules that are free $U(\h)$-modules of rank 1.
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