From Twisted Quantum Loop Algebras to Twisted Yangians

[摘要] We prove how the Yangian of $\mathfrak{gl}_N$ in its RTT presentation and Olshanski's twisted Yangians for the orthogonal and symplectic Lie algebras can be obtained by a degeneration process from the corresponding quantum loop algebra and some of its twisted analogues.

[关键词] twisted Yangians;twisted quantum loop algebras;degeneration;RTT-presentation