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math.GR2003
The Fesenko groups have finite width
Cornelius J Griffin
We prove that the Fesenko Groups, which occur as natural closed subgroups of the Nottingham Group, have finite width and infinite obliquity.
math.GR2002
Some hereditarily just infinite subgroups of the Nottingham Group
Cornelius Griffin
This work examines the commutator structure of some closed subgroups of the wild group of automorphisms of a local field with perfect residue field, a group we call $\Cal J.$ In pa…