Equivariant K-theory of Affine Flag Manifolds and Affine Grothendieck Polynomials
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چکیده
We study the equivariant K-group of the affine flag manifold with respect to the Borel group action. We prove that the structure sheaf of the (infinite-dimensional) Schubert variety in the K-group is represented by a unique polynomial, which we call the affine Grothendieck polynomial.
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تاریخ انتشار 2008