The Bar Involution for Quantum Symmetric Pairs
نویسنده
چکیده
We construct a bar involution for quantum symmetric pair coideal subalgebras Bc,s corresponding to involutive automorphisms of the second kind of symmetrizable Kac-Moody algebras. To this end we give unified presentations of these algebras in terms of generators and relations, extending previous results by G. Letzter and the second-named author. We specify precisely the set of parameters c for which such an intrinsic bar involution exists.
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