We extend the theory of sheaves on moment graphs due to
Braden-MacPherson and Fiebig to the context of an arbitrary oriented
equivariant cohomology h (e.g. to algebraic cobordism). We introduce and
investigate structure h-sheaves on double moment graphs to describe
equivariant oriented cohomology of products of flag varieties. We show
that in the case of a total flag variety X the space of global sections of
the double structure h-sheaf also describes endomorphism ring of the
equivariant h-motive of X. This is a joint project with Martina Lanini and
Rostislav Devyatov.
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Expose dans le cadre de
trimestre « Groupes algébriques et géométrisation du programme de Langlands »
http://math.univ-lyon1.fr/homes-www/gille/schedule_doua.pdf
Heure inhabituel
