English

DG-methods for microlocalization

Algebraic Geometry 2008-11-26 v1

Abstract

For a complex manifold XX the ring of microdifferential operators \EX\E_X acts on the microlocalization μhom(F,\OX)\mu hom(F,\O_X), for FF in the derived category of sheaves on XX. Kashiwara, Schapira, Ivorra, Waschkies proved, as a byproduct of their new microlocalization functor for ind-sheaves, μX\mu_X, that μhom(F,\OX)\mu hom(F,\O_X) can in fact be defined as an object of the derived category of \EX\E_X-modules: this follows from the fact that μX\OX\mu_X \O_X is concentrated in one degree. In this paper we prove that the tempered microlocalization also is an object of the derived category of \EX\E_X-modules. Since we don't know whether the tempered version of μX\OX\mu_X \O_X is concentrated in one degree, we introduce a method to build suitable resolutions for which the action of \EX\E_X is realized in the category of complexes. We define a version of the de Rham algebra on the subanalytic site which is quasi-injective and we work in the category of dg-modules over this de Rham algebra instead of the derived category of sheaves.

Keywords

Cite

@article{arxiv.0811.4080,
  title  = {DG-methods for microlocalization},
  author = {Stephane Guillermou},
  journal= {arXiv preprint arXiv:0811.4080},
  year   = {2008}
}
R2 v1 2026-06-21T11:45:06.166Z