Verma modules induced from nonstandard Borel subalgebras
Ben Cox · Pacific Journal of Mathematics · 1994
In this paper we study composition series and embeddings of Verma modules induced from "nonstandard" Borel subalgebras.This article can be viewed as a generalization of Futorny's work on imaginary Verma modules for Λ\ ' where the center of the Kac-Moody algebra acts nontrivially.