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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…
math.RT2024
Geometric construction of Schur algebras
Li Luo, Zheming Xu, Yang Yang
We provide the geometric construction of a series of generalized Schur algebras of any type via Borel-Moore homologies and equivariant K-groups of generalized Steinberg varieties.…