Introduction to Set Theory, Third Edition, Revised and Expanded - Karel Hrbacek, Thomas Jech - Google Books

http://books.google.de/books?id=Er1r0n7VoSEC&pg=PA23

Thoroughly revised, updated, expanded, and reorganized to serve as a primary text for mathematics courses, Introduction to Set Theory, Third Edition covers the basics: relations, functions, orderings, finite, countable, and uncountable sets, and cardinal…