RT Journal Article T1 The ultimate challenge: the 3x+1 problem [book review] A1 Muñoz, Vicente PB Team SN 1027-488X YR 2012 FD 2012-03 LK https://hdl.handle.net/20.500.14352/43756 UL https://hdl.handle.net/20.500.14352/43756 LA eng NO "The Ultimate Challenge: The 3x+1 Problem" Edited by Jeffrey C. Lagarias. American Mathematical Society, Providence, RI, 2010. xiv+344 pp. ISBN: 978-8218-4940-8 DS Docta Complutense RD 4 abr 2025