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arXiv:math/0608256 [math.NT]AbstractReferencesReviewsResources

Change of Coefficients for Drinfeld Modules, Shtuka, and Abelian Sheaves

Urs Hartl, Markus Hendler

Published 2006-08-10Version 1

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.

Comments: 16 pages
Categories: math.NT, math.AG
Subjects: 11G09, 14G35
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