The stable property of Newton slopes for general Witt towers

Xiang Li

Any polynomial $f(x)\in {\mathbb{Z}}_q[x]$ defines a Witt vector $[f]\in W({\mathbb{F}}_q[x])$. Consider the Artin-Schreier-Witt tower $y^F-y=[f]$. This is a tower of curves over $\math…