English

Frobenius generation for algebraic stacks

Algebraic Geometry 2025-12-19 v2

Abstract

This work investigates the Frobenius morphism on derived categories associated with algebraic stacks in positive characteristic. Particularly, we show that in many cases sufficiently many Frobenius pushforwards of a compact generator produce a classical or strong generator for the bounded derived category of coherent sheaves. In the case of Deligne--Mumford stacks, we can bound the number of iterates required.

Keywords

Cite

@article{arxiv.2512.05026,
  title  = {Frobenius generation for algebraic stacks},
  author = {Pat Lank and Fei Peng},
  journal= {arXiv preprint arXiv:2512.05026},
  year   = {2025}
}

Comments

Current: Updated references and small typos; previous: v1, comments welcome!

R2 v1 2026-07-01T08:09:55.255Z