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A coproduct structure on the formal affine Demazure algebra

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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Contributor : Baptiste Calmès <>
Submitted on : Wednesday, February 27, 2013 - 1:10:56 PM
Last modification on : Saturday, February 2, 2019 - 1:16:03 PM

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  • HAL Id : hal-00795119, version 1
  • ARXIV : 1209.1676



Baptiste Calmès, Kirill Zainoulline, Changlong Zhong. A coproduct structure on the formal affine Demazure algebra. 2013. ⟨hal-00795119⟩



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