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A coproduct structure on the formal affine Demazure algebra

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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.

Dates and versions

hal-00795119 , version 1 (27-02-2013)

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

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UNIV-ARTOIS INSMI
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