English

A Beauville-Laszlo-type descent theorem for locally Noetherian schemes

Algebraic Geometry 2023-12-18 v1

Abstract

Let XX be a locally Noetherian scheme with a closed subscheme ZZ. Let X\mathcal{X} be the completion of XX at ZZ, considered as a formal scheme. We show that a coherent sheaf on XX is equivalently given by a coherent sheaf on X\mathcal{X}, a coherent sheaf on the complement of ZZ, and an isomorphism of pullbacks of these sheaves to a certain adic space WW. By defining WW as an adic space instead of as a Berkovich space we are able to generalize the descent result of Ben-Bassat and Temkin from finite type kk-schemes to locally Noetherian schemes.

Keywords

Cite

@article{arxiv.2312.09438,
  title  = {A Beauville-Laszlo-type descent theorem for locally Noetherian schemes},
  author = {Robin Louis},
  journal= {arXiv preprint arXiv:2312.09438},
  year   = {2023}
}

Comments

52 pages, comments are welcome!