2022/01/24 by Fong, Pascal, Zikas, Sokratis
#14E05 #14E07 #14E30 #14J50 #14L30 #Algebraic Geometry (math.AG) #FOS: Mathematics
paper · doi:10.48550/arxiv.2201.09682
We prove that for each n ≥ 2, there exists a ruled variety X of dimension n such that Bir(X) contains connected algebraic subgroups which are not lying in a maximal one.