The cylinder over the Koras-Russell cubic threefold has a trivial Makar-Limanov invariant

2008/07/25 by Dubouloz, Adrien · 1 citation
#14R10 #14R20 #Algebraic Geometry (math.AG) #FOS: Mathematics

paper · doi:10.48550/arxiv.0807.4085

Abstract

We show that the Makar-Limanov invariant of the cylinder over the Koras-Russell cubic affine threefold is trivial. This means that regular functions which are invariant under all algebraic actions of the additive group on this variety are constants.

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