The structure of Frobenius kernels for automorphism group schemes
The structure of Frobenius kernels for automorphism group schemes
We establish structure results for Frobenius kernels of automorphism group schemes for surfaces of general type in positive characteristics.It turns out that there are surprisingly few possibilities.This relies on properties of the famous Witt algebra, which is a simple Lie algebra without finite-dimensional counterpart over the complex numbers, together with …