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math.QA2026
K-theoretic construction of affine quantum Schur algebras and iquantum groups with unequal parameters
Li Luo, Zheming Xu, Yang Yang
We present an equivariant K-theoretic construction of affine quantum Schur algebras of type C with three parameters by taking advantage of Kato's exotic framework. This enables the…
math.RT2026
Twisted Yangians and Steinberg varieties of type C
Changjian Su, Yang Yang
We study the equivariant homology of the generalized Steinberg variety of type C and show that there exists a surjective algebra homomorphism from the twisted Yangian of type $\AII…