We study the properties of the surjective homomorphism, defined by Beilinson, Lusztig, and MacPherson, from the quantized enveloping algebra of gl to the n ลฝ . q-Schur algebra, S n, r . In particular, we find an expression for the preimage of q ลฝ . an arbitrary element of S n, r under this map and a
Symmetric Pairs for Quantized Enveloping Algebras
โ Scribed by Gail Letzter
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 290 KB
- Volume
- 220
- Category
- Article
- ISSN
- 0021-8693
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โฆ Synopsis
Let ฮธ be an involution of a semisimple Lie algebra g, let g ฮธ denote the fixed Lie subalgebra, and assume the Cartan subalgebra of g has been chosen in a suitable way. We construct a quantum analog of U g ฮธ which can be characterized as the unique subalgebra of the quantized enveloping algebra of g which is a maximal right coideal that specializes to U g ฮธ .
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