A minimalistic Drinfeld presentation is given for twisted Yangians ^i Y, with an injective homomorphism to the Yangian Y establishing it as a right coideal subalgebra and proving isomorphism to the J-presentation.
Sklyanin,Boundary conditions for integrable quantum systems, J
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Minimalistic Presentation and Coideal Structure of Twisted Yangians
A minimalistic Drinfeld presentation is given for twisted Yangians ^i Y, with an injective homomorphism to the Yangian Y establishing it as a right coideal subalgebra and proving isomorphism to the J-presentation.