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math.AG2021
Unipotent morphisms
Daniel Bragg, Jack Hall, Siddharth Mathur
We introduce the theory of unipotent morphisms of algebraic stacks and prove a surprising local to global principle for a class of vector bundles. Two sample applications of our me…
math.AG2021
The resolution property holds away from codimension three
Siddharth Mathur, Stefan Schröer
The purpose of this paper is to verify a conjecture of Gross under mild hypothesis: all reduced, separated, and excellent schemes have the resolution property away from a closed su…