Change of Coefficients for Drinfeld Modules, Shtuka, and Abelian Sheaves
Number Theory
2007-05-23 v1 Algebraic Geometry
Abstract
We study the passage from Drinfeld-A'-modules to Drinfeld-A-modules for a given finite flat inclusion A \subset A'. We show that this defines a morphism from the moduli space of Drinfeld-A'-modules to the moduli space of Drinfeld-A-modules which is proper but in general not representable. For Drinfeld-Anderson shtuka and abelian sheaves instead of Drinfeld modules we obtain the same results.
Cite
@article{arxiv.math/0608256,
title = {Change of Coefficients for Drinfeld Modules, Shtuka, and Abelian Sheaves},
author = {Urs Hartl and Markus Hendler},
journal= {arXiv preprint arXiv:math/0608256},
year = {2007}
}
Comments
16 pages