A theory of Galois descent for finite inseparable extensions

Abstract

We present a generalization of Galois descent to finite modular normal field extension $L/K$, using the Heerma-Galois group $Aut(L[\bar{X}]/K[\bar{X}])$ where $L[\bar{X}]=L[X]/(X^{p^e})$ and $e$ is the exponent of $L$ over $K$.

arXiv comment15 pages, added a section on infinitesimal deformations, corrected minor typos, comments are welcome