Ramification Filtrations of Certain Abelian Lie Extensions of Local Fields

Liang-Chung Hsia, Hua-Chieh Li

Let $G\subset x{\mathbb{F}}_q[[x]]$ ($q$ is a power of the prime $p$) be a subset of formal power series over a finite field such that it forms a compact abelian $p$-adic Lie gr…