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Journal of Lie Theory 15 (2005), No. 2, 415--428 Copyright Heldermann Verlag 2005 Constructing Homomorphisms between Verma Modules Willem A. de Graaf RICAM, Austrian Academy of Sciences, Altenbergerstrasse 69, 4040 Linz, Austria willem.degraaf@oeaw.ac.at We describe a practical method for constructing a nontrivial homomorphism between two Verma modules of an arbitrary semisimple Lie algebra. With some additions the method generalises to the affine case. Keywords: Semisimple Lie algebras, Verma modules, algorithms. MSC: 17B10; 17-04, 17-08 [ Fulltext-pdf (242 KB)] for subscribers only. |