Published online by Cambridge University Press: 20 November 2018
The $ER\left( 2 \right)$-cohomology of
$B\mathbb{Z}/\left( {{2}^{q}} \right)$ and
$\mathbb{C}{{\mathbb{P}}^{n}}$ are computed along with the Atiyah–Hirzebruch spectral sequence for
$ER{{\left( 2 \right)}^{*}}\left( \mathbb{C}{{\mathbb{P}}^{\infty }} \right)$. This, along with other papers in this series, gives us the
$ER\left( 2 \right)$-cohomology of all Eilenberg–MacLane spaces.