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math.QA2021
The bar involution for quantum symmetric pairs -- hidden in plain sight
Stefan Kolb
We show that all quantum symmetric pair coideal subalgebras of Kac-Moody type have a bar involution for a suitable choice of parameters . The proof relie…
math.QA2021
Defining relations of quantum symmetric pair coideal subalgebras
Stefan Kolb, Milen Yakimov
We explicitly determine the defining relations of all quantum symmetric pair coideal subalgebras of quantized enveloping algebras of Kac-Moody type. Our methods are based on star p…