Torsion group schemes as iterative differential Galois groups

  • Andreas MaurischatEmail author
Original Paper


We show that torsion group schemes of abelian varieties in positive characteristic occur as iterative differential Galois groups of extensions of iterative differential fields. The main part is to find computable criteria when higher derivations are iterative derivations, and furthermore when an iterative derivation on the function field of an abelian variety is compatible with the addition map. For an explicit example, we give a construction of (a family of) such iterative derivations on the function field of an elliptic curve in characteristic two.


Differential Galois theory Group schemes Elliptic curves 

Mathematics Subject Classification

12H20 12F12 13B05 



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Copyright information

© The Managing Editors 2019

Authors and Affiliations

  1. 1.Lehrstuhl A für MathematikRWTH Aachen UniversityAachenGermany

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