Galois algebras I: Structure Theory
نویسنده
چکیده
We introduce a concept and develop a theory of Galois subalgebras in skew semigroup rings. Proposed approach has a strong impact on the representation theory, first of all the theory of Harish-Chandra modules, of many infinite dimensional algebras including the Generalized Weyl algebras, the universal enveloping algebras of reductive Lie algebras, their quantizations, Yangians etc. In particular, we show how some of these algebras can be embedded into skew (semi)group rings. As one of the applications of the developed technique we reprove the Gelfand-Kirillov conjecture for the universal enveloping algebra of gl n and verify it for the Yangians of gl 2 and for the quantization of gl 2 .
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