Menu
Home
People
Places
Arts
History
Plants & Animals
Science
Life & Culture
Technology
Reference.org
Difference hierarchy
open-in-new
<h2 id="references">References</h2> <ol> <li id="fn:1"><p>Kanamori, Akihiro (2009), The Higher Infinite: Large Cardinals in Set Theory from Their Beginnings, Springer Monographs in Mathematics (2nd ed.), Springer-Verlag, Berlin, p. 442, ISBN 978-3-540-88866-6, MR 2731169. <a href="978-3-540-88866-6" target="_blank">978-3-540-88866-6</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>Wadge, William W. (2012), "Early investigations of the degrees of Borel sets", Wadge degrees and projective ordinals. The Cabal Seminar. Volume II, Lect. Notes Log., vol. 37, Assoc. Symbol. Logic, La Jolla, CA, pp. 166–195, MR 2906999. See in particular p. 173. <a href="/wiki/MR_(identifier)" target="_blank">/wiki/MR_(identifier)</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> </ol>