The "modular" Deligne-Lusztig functors (induction and restriction=)
are functors between the derived categories of a finite reductive group
and one of its Levi subgroups. Very few informations are known about
them. The aim of this talk is to give some results about the action
of Deligne-Lusztig restriction on the Gelfand-Graev projective modules.
We shall then discuss some consequences and some related results.

Lecture #12707

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