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Working paper

Beilinson-Drinfeld Schubert varieties and global Demazure modules

arxiv.org. math. Cornell University, 2020. No. 2003.12930.
Dumanski I., Feigin E., Finkelberg M. V.
We compute the spaces of sections of powers of the determinant line bundle on the spherical Schubert subvarieties of the Beilinson- Drinfeld affine Grassmannians. The answer is given in terms of global Demazure modules of the current Lie algebra.