Complemented ideals of ${\ell }_{\infty }$

Michael Hrušák, Luis Sáenz

Answering questions raised in \cite{Leonetti, Uzcategui} we characterize ideals $\mathcal{I}\subseteq \mathcal{P}(\omega )$ such that $c_{0,\mathcal{I}}$ is complemented in ${\ell }_{\infty }$ as…