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Classification of cubic homogeneous polynomial maps with Jacobian matrices of rank two

2018/03/15 by de Bondt, Michiel, Sun, Xiaosong
#Algebraic Geometry (math.AG) #FOS: Mathematics

paper · doi:10.48550/arxiv.1803.05551

Abstract

Let K be any field with \textupcharK≠ 2,3. We classify all cubic homogeneous polynomial maps H over K with \textuprk JH≤ 2. In particular, we show that, for such an H, if F=x+H is a Keller map then F is invertible, and furthermore F is tame if the dimension n≠ 4.

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