Abstract Set Theory by Thoralf A. Skolem

This note covers the following topics: Ordered sets; A theorem of Hausdorff, Axiomatic set theory; Axioms of Zermelo and Fraenkel, The well-ordering theorem, Ordinals and alephs, Set representing ordinals, The simple infinite sequence; Development of arithmetic, The theory of Quine, Lorenzen's operative mathematics and The possibility of set theory based on many-valued logic. (este texto se halla por encima de nuestro nivel, al trata de teoría no ingenua de conjuntoso).