在策梅洛-弗兰克尔的集合论公理系统ZF中,基础公理把集合的论域限制到良基集合。
In the Zermelo-Fraenkel system ZF of set theory , the foundation axiom restricts the domain of set theory to well-founded sets .
Fuzzy集合论的公理系统
An axiomatics system for the fuzzy set theory
集合论的一些新公理系统
New axiom systems for the set theory