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Triangular Decomposition of Right Coideal Subalgebras by V.K. Kharchenko is a Mathematics article available to read on EtoBox.

What is Triangular Decomposition of Right Coideal Subalgebras about?

Let g be a Kac-Moody algebra. We show that every homogeneous right coideal subalgebra U of the multiparameter version of the quantized universal enveloping algebra U q (g), q m = 1 containing all group-like elements has a triangular decomposition where U -and U + are right coideal subalgebras of negative and positive quantum Borel subalgebras. However if U 1 and U 2 are arbitrary right coideal subalgebras of respectively positive and negative quantum Borel subalgebras, then the triangular composition U 2 ⊗ k[F ] k[H] ⊗ k[G] U 1 is a right coideal but not necessary a subalgebra. Using a recent combinatorial classification of right coideal subalgebras of the quantum Borel algebra U + q (so 2n+1 ), we find a necessary condition for the triangular composition to be a right coideal subalgebra of U q (so 2n+1 ). If q has a finite multiplicative order t > 4, similar results remain valid for homogeneous right coideal subalgebras of the multiparameter version of the small Lusztig quantum groups u q (g), u q (so 2n+1 ).

Who reads Triangular Decomposition of Right Coideal Subalgebras?

It is typically read by researchers, students, and practitioners in Mathematics.

Author
V.K. Kharchenko
Publisher
Elsevier Science; Elsevier ; Elsevier Inc.; Elsevier BV (ISSN 0021-8693)
Published
2010
Language
EN
Field
Mathematics (Physical Sciences)

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