Dear Colleagues and Friends, I would like to let you know that my book on combinatorial set theory has now been published. For details, see Springer's website: http://www.springer.com/mathematics/book/978-1-4471-2172-5?changeHeader You may download my version of the book from my webpage: http://user.math.uzh.ch/halbeisen/publications/publications.html Best regards, Lorenz Halbeisen