The preliminary version of the book Set Theory by William Weiss is available here.

You can download the book in PDF format.

Below is the Preface from the book.


These notes for a graduate course in set theory are on their way to becoming a book. They originated as handwritten notes in a course at the University of Toronto given by Prof. William Weiss. Cynthia Church produced the first electronic copy in December 2002. James Talmage Adams produced a major revision in February 2005. The manuscript has seen many changes since then, often due to generous comments by students, all of whom I here thank. Chapters 1 to 11 are now close to final form. Chapters 12 and 13 are quite readable, but should not be considered as a final draft. One more chapter will be added.