Geodesic
Equivariant Schubert calculus of Coxeter groups
Trudy Matematicheskogo Instituta imeni V.A. Steklova, Classical and modern mathematics in the wake of Boris Nikolaevich Delone, Tome 275 (2011), pp. 250-261.

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We consider an equivariant extension for Hiller's Schubert calculus on the coinvariant ring of a finite Coxeter group. 
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Shizuo Kaji. Equivariant Schubert calculus of Coxeter groups. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Classical and modern mathematics in the wake of Boris Nikolaevich Delone, Tome 275 (2011), pp. 250-261. http://geodesic.mathdoc.fr/item/TM_2011_275_a16/

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