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arXiv · 1209.1676

A coproduct structure on the formal affine Demazure algebra

Baptiste Calmès·Kirill Zainoulline·Changlong Zhong
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Abstract

In the present paper we generalize the coproduct structure on nil Hecke rings introduced and studied by Kostant-Kumar to the context of an arbitrary algebraic oriented cohomology theory and its associated formal group law. We then construct an algebraic model of the T-equivariant oriented cohomology of the variety of complete flags.

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Baptiste Calmès, Kirill Zainoulline, Changlong Zhong. 2014-09-26. A coproduct structure on the formal affine Demazure algebra. https://doi.org/10.1007/s00209-015-1585-6

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