Abstract
The graded quotients of the logarithmic ramification groups of a local field of mixed characteristic is killed by the residue characteristic. Its characters are described by differential forms.
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The research is partly supported by Grants-in-aid for Scientific Research B-18340002 and A-22244001.
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Saito, T. Ramification of local fields with imperfect residue fields III. Math. Ann. 352, 567–580 (2012). https://doi.org/10.1007/s00208-011-0652-5
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DOI: https://doi.org/10.1007/s00208-011-0652-5