Essential dimension of inifinitesimal commutative unipotent group schemes

  • Dajano TossiciEmail author


We propose a generalization of Ledet’s conjecture, which predicts the essential dimension of cyclic p-groups in characteristic p, for finite commutative unipotent group schemes. And we present some evidence for this conjecture and discuss some consequences.


Group schemes Torsors Essential dimension 

Mathematics Subject Classification

14L15 14L30 14F20 



I would like to thank A. Vistoli for useful comments and conversations. I also acknowledge the help of the referee to improve the exposition of this article. I have been partially supported by the project ANR-10-JCJC 0107 from the Agence Nationale de la Recherche. This work was partly elaborated during a stay at Max Planck Institute of Bonn.


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Copyright information

© Unione Matematica Italiana 2019

Authors and Affiliations

  1. 1.Institut de Mathématiques de BordeauxTalenceFrance

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