On complex interpolation for pairs of quasi-Banach function spaces with a non-separable component
Volume 288 / 2026
Studia Mathematica 288 (2026), 27-40
MSC: Primary 46B70; Secondary 46E30
DOI: 10.4064/sm250124-5-12
Published online: 20 March 2026
Abstract
Kalton and Mitrea (1998) characterized complex interpolation spaces of quasi-Banach function spaces as Calderón products if both interpolants are separable. We show that one separability assumption may be omitted and establish a Wolff-reiteration result with one non-separable endpoint space.
