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Drinfeld J Presentation of Twisted Yangians

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arxiv 1401.2143 v3 pith:JMEOVYIK submitted 2014-01-09 math.QA hep-thmath-phmath.MP

Drinfeld J Presentation of Twisted Yangians

classification math.QA hep-thmath-phmath.MP
keywords twistedalgebrasdrinfeldpresentationsimpleyangiansalgebraclosure
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We present a quantization of a Lie coideal structure for twisted half-loop algebras of finite-dimensional simple complex Lie algebras. We obtain algebra closure relations of twisted Yangians in Drinfeld J presentation for all symmetric pairs of simple Lie algebras and for simple twisted even half-loop Lie algebras. We provide the explicit form of the closure relations for twisted Yangians in Drinfeld J presentation for the ${\mathfrak{sl}}_3$ Lie algebra.

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  1. Twisted Yangians of types BI, CI, DI and Drinfeld type current relations

    math.QA 2026-07 conditional novelty 6.0

    For split types BI, CI, DI, the R-matrix and Drinfeld current presentations of twisted Yangians are isomorphic, confirming the Lu–Wang–Zhang conjecture, with closed-form Serre relations, PBW bases, and a tensor-factor...