# A Freeness Theorem for ROZ-2-graded Cohomology - Mathematics > Algebraic Topology

Abstract: In this paper it is shown that the ROZ-2-graded cohomology of a certainclass of RepZ-2-complexes, which includes projective spaces and Grassmannmanifolds, is always free as a module over the cohomology of a point when thecoefficient Mackey functor is \underline{Z-2}.

Author: William C. Kronholm

Source: https://arxiv.org/