Espaços de operadores lineares, multilineares e polinômios regulares em espaços de Riesz e reticulados de Banach

Abstract

The main purposes of this work are the following: (i) To show how an order relation can be introduced in the sets of regular linear operators, multilinear operators and homogeneous polynomials between Riesz spaces so that they become Riesz spaces. (ii) To show how a norm, called regular norm, can be defined in the spaces of regular linear operators, multilinear operators and homogeneous polynomials between Banach lattices so that they become Banach lattices. To achieve these tasks we prove, among several other results, the following fundamental theorems. The Kantorovich Theorem, which establishes that positive operators are fully determined by the positive cone of the domain space. The F. Riesz-Kantorovich Theorem, which guarantees that the space of regular linear operators taking values in a Dedekind complete space is a Dedekind complete Riesz space. And the result that assures that every positive linear operator from a Banach lattice to a normed Riesz space is continuous.