Download or read book Set Theory and Its Logic, Revised Edition written by Willard Van O QUINE and published by Harvard University Press. This book was released on 2009-06-30 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an extensively revised edition of Mr. Quine's introduction to abstract set theory and to various axiomatic systematizations of the subject. The treatment of ordinal numbers has been strengthened and much simplified, especially in the theory of transfinite recursions, by adding an axiom and reworking the proofs. Infinite cardinals are treated anew in clearer and fuller terms than before. Improvements have been made all through the book; in various instances a proof has been shortened, a theorem strengthened, a space-saving lemma inserted, an obscurity clarified, an error corrected, a historical omission supplied, or a new event noted.