2021/05/18 by Nick Lindemulder, Lindemulder, Nick, Emiel Lorist +1 · 2 citations
Engineering · Mathematics · #Advanced Banach Space Theory #Advanced Harmonic Analysis Research #Advanced Numerical Analysis Techniques #FOS: Mathematics #Functional Analysis (math.FA) #Primary: 46B70 #Secondary 46M35
paper · doi:10.48550/arxiv.2105.08373
openalex publication_date 2021/05/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We develop a discrete framework for the interpolation of Banach spaces, which contains the well-known real and complex interpolation methods, but also more recent methods like the Rademacher, γ- and ℓq-interpolation methods. Our framework is based on a sequential structure imposed on a Banach space, which allows us to deduce properties of interpolation methods from properties of sequential structures. Our framework has a formulation modelled after both the real and the complex interpolation methods. This enables us to extend various results, previously known only for either the real or the complex interpolation method, to all interpolation methods that fit into our framework. As applications, we prove an interpolation result for analytic operator families and an interpolation result for intersections.