Autore: Wilhelm A.J. Luxemburg

In 1961 Robinson introduced an entirely new version of the theory of infinitesimals, which he called `Nonstandard analysis’. `Nonstandard’ here refers to the nature of new fields of numbers as define …

During the last twenty-five years, the development of the theory of Banach lattices has stimulated new directions of research in the theory of positive operators and the theory of semigroups of posit …