1. Computing of the number of right coideal subalgebras of
- Author
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Kharchenko, V.K., Lara Sagahon, A.V., and Garza Rivera, J.L.
- Subjects
- *
IDEALS (Algebra) , *HOPF algebras , *QUANTUM groups , *ALGORITHMS , *NUMBER theory , *BOREL subgroups - Abstract
Abstract: In this paper we complete the classification of right coideal subalgebras containing all grouplike elements for the multiparameter version of the quantum group , . It is known that every such subalgebra has a triangular decomposition , where and are right coideal subalgebras of negative and positive quantum Borel subalgebras. We found a necessary and sufficient condition for the above triangular composition to be a right coideal subalgebra of in terms of the PBW-generators of the components. Furthermore, an algorithm is given that allows one to find an explicit form of the generators. Using a computer realization of that algorithm, we determined the number of different right coideal subalgebras that contain all grouplike elements for . If q has a finite multiplicative order , the classification remains valid for homogeneous right coideal subalgebras of the multiparameter version of the Lusztig quantum group (the Frobenius–Lusztig kernel of type ) in which case the total number of homogeneous right coideal subalgebras and the particular generators are the same. [Copyright &y& Elsevier]
- Published
- 2011
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