English

Derived parabolic induction

Representation Theory 2020-09-09 v1

Abstract

The classical parabolic induction functor is a fundamental tool on the representation theoretic side of the Langlands program. In this article, we study its derived version. It was shown by the second author that the derived category of smooth GG-representations over kk, GG a pp-adic reductive group and kk a field of characteristic pp, is equivalent to the derived category of a certain differential graded kk-algebra HGH_G^\bullet, whose zeroth cohomology is a classical Hecke algebra. This equivalence predicts the existence of a derived parabolic induction functor on the dg Hecke algebra side, which we construct in this paper. This relies on the theory of six-functor formalisms for differential graded categories developed by O.\ Schn\"urer. We also discuss the adjoint functors of derived parabolic induction.

Keywords

Cite

@article{arxiv.2009.03837,
  title  = {Derived parabolic induction},
  author = {Sarah Scherotzke and Peter Schneider},
  journal= {arXiv preprint arXiv:2009.03837},
  year   = {2020}
}

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R2 v1 2026-06-23T18:23:45.365Z