Horizontal Ga-actions on affine T-varieties of complexity one

2018/05/21 by Langlois, Kevin
#Algebraic Geometry (math.AG) #FOS: Mathematics

paper · doi:10.48550/arxiv.1805.08001

Abstract

We classify the \mathbbG_a-actions on normal affine varieties defined over any field that are horizontal with respect to a torus action of complexity one. This generalizes previous results that were available for perfect ground fields (cf. [Flenner-Zaidenberg2005, Liendo2010, L-Liendo2016]).

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