Authors: William A Feldman Pramod Singh
Publish Date: 2008/07/16
Volume: 12, Issue: 3, Pages: 495-502
Abstract
A map between Banach lattices E and F is called positively decomposable if Tf = g 1 + g 2 for f g 1 g 2 positive and g 1 and g 2 disjoint implies there exist disjoint positive elements f 1 and f 2 each less than f with the property that Tf 1 = g 1 and Tf 2 = g 2 Recently the positive decomposability of linear Carleman operators on Banach lattices were characterized using disjointness condition of images of the approximate atoms This note provides an extension of the characterization for a class of nonlinear maps Further disjointness preserving maps are studied
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