On ${\ell }_{\infty }$-Grothendieck subspaces

Manuel González, Fernando León-Saavedra, María del Pilar Romero de la Rosa

A closed subspace $S$ of ${\ell }_{\infty }$ is said to be a \emph{${\ell }_{\infty }$-Grothendieck subspace} if $c_0\subset S$ (hence ${\ell }_{\infty }\subset S^{\ast \ast }$) and every $\sigma (S^{\ast },S)$-converg…