## Ramification of Local Fields and Fontaine's Property {\large$\Pm$}

J. Math. Sci. Univ. Tokyo
Vol. 17 (2010), No. 3, Page 247--265.

Yoshida, Manabu
Ramification of Local Fields and Fontaine's Property {\large$\Pm$}
We prove that the ramification filtration of the absolute Galois group of a complete discrete valuation field with perfect residue field is characterized in terms of Fontaine's property $\Pm$.
Keywords: Right quasigroups, $PSL(2,\R)$, Borel subgroups.