Abstract:
We consider new aspects of extremal equations over symmetrizable Kač–Moody algebras. We develop new methods (reproducing classical finite-dimensional results) that can be applied to infinite-dimensional (affine) Lie algebras. We describe special extensions of universal enveloping algebras, investigate the fine structure of W-resolvents, and use these methods to investigate “extremal projectors” over Kač–Moody algebras.
Citation:
D. P. Zhelobenko, “Universal Verma modules and W-resolvents over Kač–Moody algebras”, TMF, 122:3 (2000), 334–356; Theoret. and Math. Phys., 122:3 (2000), 278–297