English

Unusual functorialities for weakly constructible sheaves

Algebraic Geometry 2025-03-25 v2

Abstract

We prove that various morphisms related to the six Grothendieck operations on sheaves become isomorphisms when restricted to (weakly) constructible sheaves. To this end, we first study some properties of weakly cohomologically constructible sheaves. We then deduce several compatibilities of the six operations in the context of (weakly) R\mathbb{R}-constructible sheaves.

Keywords

Cite

@article{arxiv.2303.11189,
  title  = {Unusual functorialities for weakly constructible sheaves},
  author = {Andreas Hohl and Pierre Schapira},
  journal= {arXiv preprint arXiv:2303.11189},
  year   = {2025}
}

Comments

13 pages; v2: improved final version, to appear in Pacific Journal of Mathematics

R2 v1 2026-06-28T09:24:23.603Z