Complete Description of Pointwise Multipliers Between Calderón–Lozanovski˘ı Spaces

The space of pointwise multipliers between two Calderón–Lozanovski˘ı spaces XF and XG is another Calderón–Lozanovski˘ı space XG⊖F, where G⊖F is the appropriately understood generalized Young conjugate of G with respect to F.