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.
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!