Naive Set Theory is a mathematics textbook by Paul Halmos providing an undergraduate introduction to set theory. While the title states that it is naive which is usually taken to mean without axioms the book does introduce all the axioms of ZFC set theory (except the Axiom of Foundation) and gives correct and rigorous definitions for basic objects. Where it differs from a true axiomatic set theory book is its character: there are no discussions of axiomatic minutiae and there is next to nothing ...
€2,00