作者：Cautis, Sabin; Williams, Harold
作者单位：University of British Columbia; University of Southern California
摘要：We construct and study a nonstandard t-structure on the derived category of equivariant coherent sheaves on the Braverman-Finkelberg-Nakajima space of triples R-G,R-N, where N is a representation of a reductive group G. Its heart KPG,N is a finite-length, rigid, monoidal abelian category with renormalized r-matrices. We refer to objects of KPG,N as Koszul-perverse coherent sheaves. Simple objects of KPG,N define a canonical basis in the quantized K-theoretic Coulomb branch of the associated ga...
