6533b857fe1ef96bd12b4efd

RESEARCH PRODUCT

A note on the Banach space of preregular maps

Coenraad C.a. LabuschagneValeria Marraffa

subject

Discrete mathematicsBanach lattice preregular operator regular operator.Mathematics (miscellaneous)Approximation propertySettore MAT/05 - Analisi MatematicaEberlein–Šmulian theoremInfinite-dimensional vector functionInterpolation spaceFinite-rank operatorBanach manifoldC0-semigroupLp spaceMathematics

description

The aim of this paper is to give simple proofs for Jeurnink's characterizations of preregular maps in terms of Θ-maps acting between Banach lattices. For Banach lattices E and F, we achieve our goal by considering the space Lβ(E, F) of all those linear maps T: E → F for which there exists a constant K such that {double pipe}Vn i=1 {pipe}Txi{pipe} ≤ K {double pipe}Vn i=1{pipe}xi for all finite sequences x1, ..., xn e{open}E. We show that, if Lβ(E; F), and the spaces L Θ (E; F) of Θ -map and Lpr(E; F) of preregular maps are respectively endowed with their canonical norms, then they are identical Banach spaces

https://www.ajol.info/index.php/qm/article/view/67837