axiomatic set theory

In contrast to naive set theory, the attitude adopted in an axiomatic development of set theory is that it is not necessary to know what the “things” are that are called “sets” or what the relation of membership means. Of sole concern…

…(notably in Poland) and an axiomatic theory of sets that avoided Russell’s paradoxes and the others that had sprung up.

…set theory, and, in fact, axiomatic set theory is often regarded as a part of logic. For the purposes of this article, however, it is more appropriate to confine the discussion to logic in the first sense.

…delved into the realm of set theory, trying to streamline the Zermelo-Fraenkel system of axioms (see logic, history of: 20th-century set theory). This work appeared in a series of articles under the title “A System of Axiomatic Set Theory” (1937–54), from which the principal theses were published as Axiomatic Set…