Fesenko group

In mathematics, Fesenko groups are certain subgroups of the automorphism groups of local fields (essentially the Nottingham group), studied by Ivan Fesenko (Fesenko (1999)).

References

• Fesenko, Ivan (1999), "On just infinite pro-p-groups and arithmetically profinite extensions of local fields", Journal für die reine und angewandte Mathematik 517: 61–80, doi:10.1515/crll.1999.098, ISSN 0075-4102, MR 1728547 
• Griffin, Cornelius (2005), "The Fesenko groups have finite width", The Quarterly Journal of Mathematics 56 (3): 337–344, doi:10.1093/qmath/hah033, ISSN 0033-5606, MR 2161247