Content and Q-sequences in Mixed Characteristic Local Rings

Abstract

It is proved that a system of parameters is always a Q-sequence for several classes of mixed characteristic rings: rings in which the characteristic of the residue field is a nilpotent element, a mixed characteristic analogue of Stanley-Reisner rings, and a mixed characteristic analogue of semigroup rings and toric face rings.

Paper has been edited down to 21 pages, and a new section has been added