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Generic triangular solutions of the reflection equation: $U_{q}(\widehat{sl_2})$ case (1912.12808v2)
Published 30 Dec 2019 in math-ph, hep-th, math.MP, and math.QA
Abstract: We consider intertwining relations of the triangular $q$-Onsager algebra, and obtain generic triangular boundary $K$-operators in terms of the Borel subalgebras of $U_{q}(sl_2)$. These $K$-operators solve the reflection equation.