31 citations · 84 across the 26 of their papers we have counts for
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math.AG2009
Algebraic Surfaces in Positive Characteristic
Christian Liedtke
These notes are an introduction to and an overview of the theory of algebraic surfaces over algebraically closed fields of positive characteristic. After some background in charact…
math.AG2009
Birational modifications of surfaces via unprojections
Christian Liedtke, Stavros Argyrios Papadakis
We describe elementary transformations between minimal models of rational surfaces in terms of unprojections. These do not fit into the framework of Kustin-Miller unprojections as…
math.AG2009
The p-torsion subgroup scheme of an elliptic curve
Christian Liedtke
Let be a field of positive characteristic . Question: Does every twisted form of over occur as subgroup scheme of an elliptic curve over ? We show that this is…