Families of $p$-divisible groups with constant Newton polygon
Families of $p$-divisible groups with constant Newton polygon
复制标题
具有常数牛顿多边形的$p$可整群族
作者:
F. Oort;T. Zink
Let X be a p-divisible group with constant Newton poly- gon over a normal Noetherian scheme S. We prove that there exists an isogeny X! Y such that Y admits a slope flltration. In case S is regular this was proved by N. Katz for dim S = 1 and by T. Zink for dim S‚ 1.